WO2019107485A1 - 細胞の培養方法 - Google Patents
細胞の培養方法 Download PDFInfo
- Publication number
- WO2019107485A1 WO2019107485A1 PCT/JP2018/043949 JP2018043949W WO2019107485A1 WO 2019107485 A1 WO2019107485 A1 WO 2019107485A1 JP 2018043949 W JP2018043949 W JP 2018043949W WO 2019107485 A1 WO2019107485 A1 WO 2019107485A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cells
- medium
- neural crest
- concentration
- gsk3β
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0625—Epidermal cells, skin cells; Cells of the oral mucosa
- C12N5/0626—Melanocytes
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0618—Cells of the nervous system
- C12N5/0623—Stem cells
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0652—Cells of skeletal and connective tissues; Mesenchyme
- C12N5/0653—Adipocytes; Adipose tissue
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0652—Cells of skeletal and connective tissues; Mesenchyme
- C12N5/0654—Osteocytes, Osteoblasts, Odontocytes; Bones, Teeth
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0652—Cells of skeletal and connective tissues; Mesenchyme
- C12N5/0655—Chondrocytes; Cartilage
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0652—Cells of skeletal and connective tissues; Mesenchyme
- C12N5/0662—Stem cells
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2500/00—Specific components of cell culture medium
- C12N2500/30—Organic components
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/10—Growth factors
- C12N2501/11—Epidermal growth factor [EGF]
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/10—Growth factors
- C12N2501/115—Basic fibroblast growth factor (bFGF, FGF-2)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/10—Growth factors
- C12N2501/135—Platelet-derived growth factor [PDGF]
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/10—Growth factors
- C12N2501/15—Transforming growth factor beta (TGF-β)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/10—Growth factors
- C12N2501/155—Bone morphogenic proteins [BMP]; Osteogenins; Osteogenic factor; Bone inducing factor
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/70—Enzymes
- C12N2501/72—Transferases [EC 2.]
- C12N2501/727—Kinases (EC 2.7.)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/999—Small molecules not provided for elsewhere
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2506/00—Differentiation of animal cells from one lineage to another; Differentiation of pluripotent cells
- C12N2506/45—Differentiation of animal cells from one lineage to another; Differentiation of pluripotent cells from artificially induced pluripotent stem cells
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2510/00—Genetically modified cells
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2533/00—Supports or coatings for cell culture, characterised by material
- C12N2533/90—Substrates of biological origin, e.g. extracellular matrix, decellularised tissue
Definitions
- the present invention relates to a method for producing and growing neural crest cells, a medium, a frozen stock, and a method for producing various cells from neural crest cells. More particularly, the present invention relates to methods for producing and growing neural crest cells, media used therefor, frozen stocks containing neural crest cells, and methods for producing various cells that can be induced to differentiate from neural crest cells.
- Neural Crest Cells are cells that are generated between neural ectoderm and epidermal ectoderm when neural tube is formed from the neural plate in the early development stage, and neural cells, glial cells, mesenchymal cells It is a cell having multipotency and self-proliferation ability to differentiate into many types of cells such as interstitial cells, osteocytes, chondrocytes, corneal cells and pigment cells. Such multipotency and self-proliferation ability show the usefulness of neural crest cells as cell medicines for regenerative medicine, and there are techniques for efficiently maintaining or proliferating neural crest cells. Desired.
- Non-Patent Document 1 describes that neural crest cells were derived from human inducible pluripotent cells (iPSCs), and mesenchymal stromal cells and the like were further derived from neural crest cells.
- maintenance culture of neural crest cells is adhesion culture using a medium to which a TGF ⁇ inhibitor, epidermal growth factor (EGF) and basic fibroblast growth factor (bFGF (also referred to as FGF2)) are added. It is done by a TGF ⁇ inhibitor, epidermal growth factor (EGF) and basic fibroblast growth factor (bFGF (also referred to as FGF2)) are added. It is done by
- Non-Patent Document 2 describes that neural crest cells were derived from a chick embryonic neural tube and glial cells and the like were derived from neural crest cells.
- maintenance culture of neural crest cells is performed by suspension culture using a medium to which chicken embryo extract, insulin-like growth factor (IGF), bFGF and retinoic acid (RA) are added.
- IGF insulin-like growth factor
- bFGF retinoic acid
- Non-Patent Document 3 describes that neural crest cells are derived from human embryonic stem cells (ESCs) or human iPSCs, and further, smooth muscle cells and the like are derived from neural crest cells.
- ESCs human embryonic stem cells
- iPSCs human iPSCs
- smooth muscle cells and the like are derived from neural crest cells.
- maintenance culture of neural crest cells is performed by adhesion culture using a medium to which GSK3 ⁇ inhibitor and TGF ⁇ inhibitor are added.
- Non Patent Literature 4 describes that neural crest cells were derived from human iPSCs and maintained by adhesion culture or suspension culture using a medium to which GSK3 ⁇ inhibitor, TGF ⁇ inhibitor, EGF and bFGF were added. There is.
- Non-Patent Document 4 reports that under maintenance culture by adherent culture, the number and ratio of neural crest cells in the cultured cell population decrease in a concentration-dependent manner in the range of 0 pg / ml to 10 ng / ml of bFGF concentration See FIGS. 5A-C.
- 1 ⁇ M of CHIR99021 is used as a GSK3 ⁇ inhibitor and cultured for 7 days to confirm the presence of Sox10-positive cells.
- the cells have multipotency. It is not clear if there is any.
- Non-Patent Documents 1 to 4 describes that neural crest cells are maintained and propagated by suspension culture using a medium to which CHIR 99021 at a concentration of more than 1 ⁇ M and bFGF are added.
- Neural crest cells originally possess multipotency to differentiate into many types of cells such as nerve cells, glial cells, mesenchymal stromal cells, osteocytes, chondrocytes, corneal cells and pigment cells. In culture, it is known that the multipotency gradually decreases and the number of cell types that can be differentiated decreases.
- the main object of the present invention is to provide a technique for culturing and proliferating neural crest cells maintaining multipotency for a long period of time.
- [1] A method for producing neural crest cells, comprising the following steps: (1) obtaining neural crest cells, (2) A step in which neural crest cells are suspended and cultured in a medium containing a GSK3 ⁇ inhibitor and basic fibroblast growth factor (bFGF), which has an effect equivalent to that exhibited by CHIR 99021 at a concentration of more than 1 ⁇ M
- the medium comprises a GSK3 ⁇ inhibitor of [1a]
- the production method of [1] wherein the concentration of the GSK3 ⁇ inhibitor is a concentration showing an effect equivalent to the effect exhibited by CHIR 99021 at a concentration of more than 1 ⁇ M and less than 5 ⁇ M.
- [1b] The effect is evaluated based on the GSK3 ⁇ inhibitory activity of a GSK3 ⁇ inhibitor,
- the method for producing [1], wherein the GSK3 ⁇ inhibitory activity of the GSK3 ⁇ inhibitor is determined by the following procedure.
- (I) culturing a cell in which expression of a reporter gene is suppressed under the control of GSK3 ⁇ in the presence and absence of a GSK3 ⁇ inhibitor,
- (Iii) A procedure of determining the GSK3 ⁇ inhibitory activity of the GSK3 ⁇ inhibitor based on the increase in the expression level of the reporter gene in the presence of the GSK3 ⁇ inhibitor relative to the expression level of the reporter gene in the absence of the GSK3 ⁇ inhibitor.
- the GSK3 ⁇ inhibitor is at least one selected from the group consisting of CHIR99021, CP21R7, CHIR98014, LY2090314, kenpaulon, AR-AO 144-18, TDZD-8, SB216763, BIO, TWS-119, and SB415286, The manufacturing method of [1].
- [6a] The production method of [6], wherein the concentration of CHIR 99021 is more than 1 ⁇ M and less than 5 ⁇ M.
- [6b] The production method of [6a], wherein the concentration of CHIR 99021 is 2 or more and 4.5 ⁇ M or less.
- [6c] The method for producing [5], wherein the GSK3 ⁇ inhibitor is CP21R7.
- [6d] The production method of [6c], wherein the concentration of CP21R7 is 0.5 or more and 1 ⁇ M or less.
- the above TGF ⁇ inhibitor is at least one selected from the group consisting of SB431542, A83-01, LDN193189, Wnt3a / BIO, BMP4, GW788388, SM16, IN-1130, GW6604 and SB505124, [2] Production method.
- [8] The method according to any one of [1], wherein neural crest cells are passaged every 5 to 8 days after seeding in the step (2).
- the step (1) is a step of inducing differentiation of neural crest cells from stem cells.
- a method of proliferating neural crest cells comprising the following steps: (I) A step of suspension culture of neural crest cells in a medium containing a GSK3 ⁇ inhibitor and basic fibroblast growth factor (bFGF), a concentration showing an effect equivalent to that exhibited by CHIR 99021 at a concentration of more than 1 ⁇ M
- the medium comprises a GSK3 ⁇ inhibitor of [10a]
- the proliferation method of [10] wherein the concentration of the GSK3 ⁇ inhibitor is a concentration showing an effect equivalent to the effect exhibited by CHIR 99021 at a concentration of more than 1 ⁇ M and less than 5 ⁇ M.
- the medium further comprises a TGF ⁇ inhibitor.
- the GSK3 ⁇ inhibitor is at least one selected from the group consisting of CHIR99021, CP21R7, CHIR98014, LY2090314, kenpaulon, AR-AO 144-18, TDZD-8, SB216763, BIO, TWS-119, and SB415286, The proliferation method of [10].
- the medium of [11] further comprising a TGF ⁇ inhibitor.
- the medium of [11], wherein the medium is a CDM medium.
- EGF epidermal growth factor
- the GSK3 ⁇ inhibitor is at least one selected from the group consisting of CHIR99021, CP21R7, CHIR98014, LY2090314, kenpaullone, AR-AO 144-18, TDZD-8, SB216763, BIO, TWS-119, and SB415286, Medium of [11].
- the medium of [15], wherein the GSK3 ⁇ inhibitor is CHIR99021.
- the above TGF ⁇ inhibitor is at least one selected from the group consisting of SB431542, A83-01, LDN193189, Wnt3a / BIO, BMP4, GW788388, SM16, IN-1130, GW6604 and SB505124, Culture medium.
- a frozen stock comprising neural crest cells obtained by the method of [1].
- [18a] separating the neural crest cells obtained in the process of [1]; Suspending the isolated neural crest cells in a cell preservation solution and freezing, the frozen stock of [18] obtained by: [19]
- a method for producing nerve cells, glial cells, mesenchymal stromal cells, osteocytes, chondrocytes, corneal cells or pigment cells comprising the following steps: (I) A step of suspension culture of neural crest cells in a medium containing a GSK3 ⁇ inhibitor and basic fibroblast growth factor (bFGF), a concentration showing an effect equivalent to that exhibited by CHIR 99021 at a concentration of more than 1 ⁇ M
- the medium comprises a GSK3 ⁇ inhibitor of (Ii) at least one neural crest cell obtained in step (i) is selected from the group consisting of nerve cells, glial cells, mesenchymal stromal cells, bone cells, chondrocytes, corneal cells and pigment cells
- a step of differentiating into cells comprising the group consisting
- the medium further comprises a TGF ⁇ inhibitor.
- the medium is a CDM medium.
- the method for producing [19], wherein the medium further contains epidermal growth factor (EGF).
- EGF epidermal growth factor
- the GSK3 ⁇ inhibitor is at least one selected from the group consisting of CHIR99021, CP21R7, CHIR98014, LY2090314, kenpaulon, AR-AO 144-18, TDZD-8, SB216763, BIO, TWS-119 and SB415286, The manufacturing method of [19].
- the production method of [19e], wherein the GSK3 ⁇ inhibitor is CHIR 99021.
- the medium of [19 g] wherein the concentration of CHIR 99021 is 2 or more and 4.5 ⁇ M or less.
- [20] A method for long-term culture of pluripotent neural crest cells, comprising the following steps: (1) obtaining neural crest cells, (2) A step of suspension culture of neural crest cells in a medium containing a GSK3 ⁇ inhibitor and a basic fibroblast growth factor, wherein GSK3 ⁇ inhibition at a concentration equivalent to that exhibited by CHIR 99021 at a concentration above 1 ⁇ M The step of containing the agent in the medium. [20a] The culture method of [20], wherein the concentration of the GSK3 ⁇ inhibitor is a concentration showing an effect equivalent to the effect exhibited by CHIR 99021 at a concentration of more than 1 ⁇ M and less than 5 ⁇ M.
- the GSK3 ⁇ inhibitor is at least one selected from the group consisting of CHIR99021, CP21R7, CHIR98014, LY2090314, kenpaulon, AR-AO 144-18, TDZD-8, SB216763, BIO, TWS-119, and SB415286, [20] The propagation method.
- [21] Long-term pluripotent neural crest cells of a medium containing basic fibroblast growth factor and a GSK3 ⁇ inhibitor at a concentration equivalent to that exhibited by CHIR 99021 at a concentration of more than 1 ⁇ M Use to culture.
- [21a] Use in the culture of neural crest cells of a basic fibroblast growth factor and a concentration of GSK3 ⁇ inhibitor showing an effect equivalent to the effect exhibited by a concentration of 1 ⁇ M or more of CHIR99021.
- [21b] Use of a basic fibroblast growth factor and a GSK3 ⁇ inhibitor at a concentration equivalent to that exhibited by CHIR 99021 at a concentration of 1 ⁇ M or more for the production of neural crest cell culture medium.
- pluripotency refers to the ability to differentiate into tissues or cells with a variety of different forms and functions, and can differentiate into cells of any lineage of three germ layers.
- the term “pluripotency” refers to "totipotency” that can differentiate into any tissue of a living being, including scutella, in that "pluripotency” can not differentiate into the scutellum and thus is not capable of forming an individual. It is distinguished from ".
- Multipotency means the ability to differentiate into cells of a limited number of lineages. For example, mesenchymal stem cells, hematopoietic stem cells, neural stem cells are multipotent but not pluripotent. Neural crest cells have multipotency to differentiate into cells such as nerve cells, glial cells, mesenchymal stromal cells, osteocytes, chondrocytes, corneal cells and pigment cells.
- culturing refers to maintaining, growing (growing) and / or differentiating cells in an in vitro environment. By “culturing” is meant maintaining, growing (growing) and / or differentiating cells outside of or outside the tissue, eg, in a cell culture dish or flask.
- Adhesive culture means culturing cells in a state of being attached to a container, for example, in a state of attaching cells to a sterile plastic (or coated plastic) cell culture dish or flask in the presence of an appropriate medium. It means that.
- sustained culture means culturing cells in a state of being dispersed as a cell sphere consisting of a single cell or two or more cells in an appropriate medium without adhering to a container. .
- expansion culture means culture for the purpose of expanding desired cells.
- GSK3 ⁇ inhibitor is a substance having an inhibitory activity on GSK3 ⁇ (glycogen synthase kinase 3 ⁇ ).
- GSK3 (glycogen synthase kinase 3) is a type of serine / threonine protein kinase, and is involved in many signal pathways involved in glycogen production, apoptosis, stem cell maintenance, and the like.
- GSK3 has two isoforms, ⁇ and ⁇ .
- the “GSK3 ⁇ inhibitor” used in the present invention is not particularly limited as long as it has GSK3 ⁇ inhibitory activity, and may be a substance having GSK3 ⁇ inhibitory activity together with GSK3 ⁇ inhibitory activity.
- TGF ⁇ inhibitor is a substance having an inhibitory activity on TGF ⁇ (transforming growth factor ⁇ ).
- TGF ⁇ is a cytokine that binds to two types of serine / threonine protein kinase type receptors, and controls cell proliferation, cell differentiation, cell death, etc. through signal transduction mainly based on Smad (R-Smad) activation.
- Substances having TGF ⁇ inhibitory activity include substances that inhibit the binding of TGF ⁇ to its receptor, or substances that inhibit downstream signals after TGF ⁇ binds to the receptor.
- As the downstream signal phosphorylation of TGF ⁇ type I receptor by TGF ⁇ type II receptor, phosphorylation of Smad by phosphorylated TGF ⁇ type I receptor and the like are exemplified.
- the “TGF ⁇ inhibitor” used in the present invention is not particularly limited as long as it has TGF ⁇ inhibitory activity.
- the term “marker” refers to a "marker protein” or a “marker gene”, which is a protein specifically expressed on the cell surface, in the cytoplasm and / or in the nucleus or the like in a predetermined cell type. It means a gene.
- the marker may be a positive selection marker or a negative selection marker.
- the marker is a cell surface marker, in particular a cell surface positive selection marker makes it possible to concentrate, isolate and / or detect viable cells.
- the detection of the marker protein can be performed using an immunological assay using an antibody specific for the marker protein, such as ELISA, immunostaining, flow cytometry and the like.
- an antibody specific to a marker protein an antibody that binds to a specific amino acid sequence in the marker protein or a specific sugar chain or the like bound to the marker protein can be used.
- a marker protein for example, a transcription factor or a subunit thereof or the like
- a reporter protein is expressed together with the marker protein, and the target is detected by detecting the reporter protein.
- Marker protein can be detected (for example, Non-Patent Document 4). This method can be preferably used when no suitable cell surface marker is found.
- the marker gene can be detected using nucleic acid amplification methods and / or nucleic acid detection methods known in the art, such as RT-PCR, microarray, biochip and RNAseq.
- expression is defined as transcription and / or translation of a particular nucleotide sequence driven by a promoter in a cell.
- “about” or “approximately” refers to 30%, 25%, 20%, 15%, 10%, 8%, 6%, 5%, 4% plus or minus respectively with respect to a reference value. , 3%, 2% or 1%.
- the terms “about” or “approximately” indicate a range of plus or minus 15%, 10%, 5%, or 1%, respectively, relative to a reference value.
- the present invention provides a technique for culturing and expanding neural crest cells maintaining multipotency for a long period of time.
- the concentration of bFGF and EGF is 20 ng / ml (A) or 40 ng / ml (B), and the concentration of CHIR 99021 is 1, 2, 3 or 5 ⁇ M (indicated as 1 ⁇ , 2 ⁇ , 3 ⁇ , 5 ⁇ , respectively)
- the vertical axis indicates the total number of cells, and "1.
- E +" indicates a power of 10. For example, "1. E + 04" means 10000.
- the horizontal axis indicates the number of days of culture.
- the concentration of bFGF and EGF is 20 ng / ml (A) or 40 ng / ml (B), and the concentration of CHIR 99021 is 1, 2, 3 or 5 ⁇ M (shown as 1 ⁇ , 2 ⁇ , 3 ⁇ , 5 ⁇ , respectively)
- the vertical axis indicates the percentage of SOX10-expressing cells (%), and the horizontal axis indicates the number of days of culture.
- the vertical axis indicates the percentage of SOX10-expressing cells (%), and the horizontal axis indicates the number of days of culture. It is a graph which shows the result of having measured the change of a total cell number, performing expansion culture of neural crest cells by making the density
- the vertical axis indicates the total number of cells, and "1. E +" indicates a power of 10. It is a graph which shows the result of having measured the change of the SOX10 expression positive cell rate, performing expansion culture of neural crest cells by making the density
- the vertical axis indicates the percentage of SOX10-expressing cells (%), and the horizontal axis indicates the number of days of culture.
- the method for producing neural crest cells according to the present invention comprises the following steps.
- the step (2) is, in particular, a method of proliferating neural crest cells according to the present invention.
- (1) obtaining neural crest cells, (2) A step in which neural crest cells are suspended and cultured in a medium containing a GSK3 ⁇ inhibitor and basic fibroblast growth factor (bFGF), which has an effect equivalent to that exhibited by CHIR 99021 at a concentration of more than 1 ⁇ M.
- the medium comprises a GSK3 ⁇ inhibitor of
- the step (1) of obtaining neural crest cells is a step of obtaining neural crest cells to be subjected to the step (2).
- the method for obtaining neural crest cells in step (1) is not particularly limited. For example, a method for inducing differentiation of neural crest cells from stem cells, a method for purchasing commercially available neural crest cells, and naturally occurring neural crest cells The method of collection etc. are mentioned.
- neural crest cells can be induced to differentiate from stem cells in order to obtain neural crest cells to be subjected to step (2).
- stem cells examples include pluripotent stem cells.
- pluripotent stem cells The term “pluripotent stem cells” which can be used in the present invention can be differentiated into tissues or cells having various different forms and functions of the living body, and can be divided into three germ layers (endoderm, mesoderm, ectoderm) Refers to stem cells having the ability to differentiate into cells of any lineage of Examples thereof include, but are not limited to, embryonic stem cells (ESCs), embryonic stem cells derived from cloned embryos obtained by nuclear transfer, spermatogonial stem cells, embryonic germ cells, induced pluripotent stem cells (herein sometimes referred to as “iPSC” and the like.
- ESCs embryonic stem cells
- iPSC induced pluripotent stem cells
- multipotent stem cells that can be used in the present invention refer to stem cells having the ability to differentiate into cells of a limited number of lineages.
- multipotent stem cells include dental pulp stem cells, oral mucosa-derived stem cells, hair follicle stem cells, cultured fibroblasts and somatic stem cells derived from bone marrow stem cells .
- Preferred pluripotent stem cells are ESCs and iPSCs.
- mice ESC For mouse ESC, various mouse ESC strains established by ingenious targeting laboratory, RIKEN (RIKEN), etc. are available for mouse ESC, and for human ESC, University of Wisconsin, NIH, RIKEN Various human ESC strains established by Kyoto University, National Center for Growth and Medical Research, Cellartis, etc. are available.
- RIKEN ingenious targeting laboratory
- “Artificial pluripotent stem cells” refers to cells obtained by introducing and reprogramming a specific factor (nuclear reprogramming factor) into mammalian somatic cells or undifferentiated stem cells.
- a specific factor nuclear reprogramming factor
- Yamanaka et al. Established iPSCs by introducing four factors of Oct3 / 4, Sox2, Klf4, c-Myc into mouse fibroblasts. (Takahashi K, Yamanaka S., Cell, (2006) 126: 663-676) and human factor-derived iPSCs established by introducing the same four factors into human fibroblasts (Takahashi K, Yamanaka S. , et al.
- Nanog-iPSC (Okita, K., Ichisaka, T., and Yamanaka) selected and established using the expression of Nanog as an index after the introduction of the four factors described above. , S. (2007). Nature 448, 313-317.), IPSCs prepared by a method that does not contain c-Myc (Nakagawa M, Yamanaka S., et al. Nature Biotechnology, (2008) 26, 101-106 I) and iPSCs established by introducing 6 factors by virus-free method (Okita K et al. Nat. Methods 2011 May; 8 (5): 409-12, Okita K et al. Stem Cells.
- induced pluripotent stem cells established by introducing four factors of OCT3 / 4, SOX2, NANOG and LIN28 prepared by Thomson et al. (Yu J., Thomson JA. Et al., Science (2007) 318: 1917-1920.), Induced pluripotent stem cells produced by Daley et al. (Park IH, Daley GQ. Et al., Nature (2007) 451: 141-146), induced pluripotent stem cells produced by Sakurada et al. (Japanese Patent Laid-Open No. 2008-307007) can also be used.
- induced pluripotent stem cells Any of the induced pluripotent stem cells known in the art can be used.
- As the induced pluripotent stem cell line various iPSC lines established by NIH, RIKEN, Kyoto University and the like can be used.
- the induction of differentiation of stem cells into neural crest cells can be performed according to a method known in the literature (for example, non-patent document 1).
- a method known in the literature for example, non-patent document 1.
- human iPSCs when used, they can be differentiated into neural crest cells by adhering culture in a medium containing a TGF ⁇ inhibitor and a GSK3 ⁇ inhibitor after seeding the iPSCs in a dish or the like and adhering culture.
- the medium to be used is not particularly limited, but for example, TeSR1 medium and Chemically Defined Medium (CDM) medium are suitably used.
- BME medium, BGJb medium, CMRL 1066 medium, Glasgow MEM medium, Improved MEM (IMEM) medium, Improved MDM (IMDM) medium, Medium 199 medium, Eagle MEM medium, ⁇ MEM medium, DMEM medium (High glucose, Low glucose) ), DMEM / F12 medium, Ham's medium, RPMI 1640 medium, Fischer's medium, and a mixed medium of these, etc. may be used.
- the CDM medium is not particularly limited, and, for example, a medium prepared from Iscove's modified Dulbecco's medium (manufactured by GE Healthcare) may be used. As a more specific example, the CDM medium described in Non-Patent Document 1 is used.
- the CDM medium may contain apotransferrin, monothioglycerol, bovine serum albumin (BSA), insulin and / or antibiotics.
- the culture period before the addition of the TGF ⁇ inhibitor and the GSK3 ⁇ inhibitor is not particularly limited as long as the target number of cells can be obtained, and is, for example, 2 to 6 days.
- SB431542 (4- (5-benzol [1,3] dioxol-5-yl-4-pyridin-2-yl-1H-imidazol-2-yl) -benzamide, 4- [4- (4-benzol, 1,3-benzodioxol-5-yl) -5- (2-pyridinyl) -1H-imidazol-2-yl] -benzamide, 4- [4- (3,4-methylenedioxyphenyl) -5 -(2-Pyridyl) -1H-imidazol-2-yl] -benzamide), A83-01 (3- (6-methylpyridin-2-yl) -1-phenylthiocarbamoyl-4-quinolin-4-ylpyrazole ), LDN 193189 (4- [6- [4- (1-Piperazinyl) phenyl] pyrazolo [1,5-a] pyrimidin-3-yl] -
- the concentration of the TGF ⁇ inhibitor to be added in this step is appropriately adjusted according to the type of TGF ⁇ inhibitor to be added, and is, for example, 1 to 40 ⁇ M, preferably 5 to 20 ⁇ M.
- the addition concentration is particularly 10 ⁇ M and it can.
- CHIR 98014 (2-[[2-[(5-nitro-6-aminopyridin-2-yl) amino] ethyl] amino] -4- (2,4-dichlorophenyl) -5- (1H -Imidazol-1-yl) pyrimidine), CHIR 990 21 (6-[[2-[[4- (2,4-dichlorophenyl) -5- (4-methyl-1H-imidazol-2-yl) -2-pyrimidinyl] [Amino] ethyl] amino] nicotinonitrile), CP21 R7 (3- (3-amino-phenyl) -4- (1-methyl-1H-indol-3-yl) -pyrrole-2,5-dione), LY 2090314 ( 3- [9-Fluoro-1,2,3,4-tetrahydro-2- (1-piperidinylcarbonyl) pyrrolo [3,2,1-
- GSK3 ⁇ inhibitors are not limited to these, and antisense oligonucleotides or siRNA against GSK3 ⁇ mRNA, antibodies binding to GSK3 ⁇ , dominant negative GSK3 ⁇ variants, etc. can also be used as GSK3 ⁇ inhibitors, and these are commercially available Can be obtained according to known methods or can be synthesized according to known methods.
- the concentration of GSK3 ⁇ inhibitor added in this step is appropriately adjusted depending on the type of GSK3 ⁇ inhibitor to be added, and is, for example, 0.01 to 20 ⁇ M, preferably 0.1 to 10 ⁇ M.
- the addition concentration is not particularly limited, but can be, for example, 0.1 to 1 ⁇ M, preferably 0.5 to 1 ⁇ M, particularly 1 ⁇ M.
- the culture period after the addition of the TGF ⁇ inhibitor and the GSK3 ⁇ inhibitor is not particularly limited as long as the desired number of cells can be obtained, but for example, 6-14 days, 8-12 days, 9-11 days or 10 days. It is a day.
- culture vessels such as dishes, flasks, microplates and cell culture sheets such as OptiCell (product name) (Nunc) are used.
- the culture vessel may be surface-treated to improve adhesion (hydrophilicity) with cells, collagen, gelatin, poly-L-lysine, poly-D-lysine, laminin, fibronectin, matrigel (eg, BD Matrigel (eg, Japan) It is preferable to be coated with a substrate for cell adhesion such as Becton Dickinson Co., Ltd.) and vitronectin.
- Matrigel refers to a soluble basement membrane preparation extracted from Engelbreth-Holm-Swarm (EHS) mouse sarcoma, which is rich in extracellular matrix proteins, and culture vessels coated with Matrigel are commercially available. It is possible. The main components of matrigel are laminin, collagen IV, heparan sulfate proteoglycan, and entactin / nidogen 1,2. Matrigel, in addition to these major components, is naturally produced by TGF ⁇ , epidermal growth factor, insulin-like growth factor, fibroblast growth factor, tissue plasminogen activator 3, 4 and other EHS tumors And growth factors.
- the culture temperature is, but not limited to, 30 to 40 ° C. (eg, 37 ° C.). Also, the carbon dioxide concentration in the culture vessel is, for example, about 5%.
- commercially available neural crest cells can also be purchased to obtain neural crest cells to be subjected to step (2).
- Examples of commercially available neural crest cells include human hair follicle outer root sheath cells (manufactured by Cosmo Bio), O9-1 Mouse Cranial Neural Crest Cell Line (manufactured by Merck Millipore), and the like.
- naturally occurring neural crest cells can also be harvested to obtain neural crest cells to be subjected to step (2).
- Neural crest cells are present in the neural tube of human embryos around 30 days after fertilization, in the neural tube of mouse embryos around 9 days after embryonic day, and in adult human skin of pigs, pigs and rodents, etc. Have been reported (Betters et al., Developmental biology, 2010, 344 (2): 578-592, Jiang et al., Development, 2000 , 127 (8): 1607-1616, Dupin et al., Developmental biology, 2012, 366 (1): 83-95, Nashishi et al., Cell Stem Cell 2, April 2008, 392-403).
- Such neural crest cells are collected using known methods (for example, Motohashi et al., Biology open, 2016, 5: 311-322, Pfaltzgraffet al., Journal of Visualized Experiments, 2012, 64: 4134), It is also possible to provide for step (2).
- neural crest cells are suspended and cultured in a medium containing a GSK3 ⁇ inhibitor and a basic fibroblast growth factor (bFGF).
- bFGF basic fibroblast growth factor
- the medium to be used is not particularly limited, and for example, a CDM medium is suitably used.
- a CDM medium is suitably used.
- TeSR1 medium, BME medium, BGJb medium, CMRL 1066 medium, Glasgow MEM medium, Improved MEM (IMEM) medium, Improved MDM (IMDM) medium, Medium 199 medium, Eagle MEM medium, ⁇ MEM medium, DMEM medium (High glucose (High glucose) Low glucose), DMEM / F12 medium, Ham's medium, RPMI 1640 medium, Fischer's medium, mixed medium thereof, and the like can also be used.
- GSK3 ⁇ inhibitor those described above can be used without particular limitation.
- a preferred GSK3 ⁇ inhibitor is at least one selected from the group consisting of CHIR99021, CP21R7, CHIR98014, LY2090314, Kenpaullone, AR-AO 144-18, TDZD-8, SB216763, BIO, TWS-119 and SB415286.
- Particularly preferred GSK3 ⁇ inhibitors are CHIR 99021 or CP21 R7.
- the addition concentration of the GSK3 ⁇ inhibitor in this step is a concentration showing an effect equivalent to the effect exhibited by CHIR 99021 at a concentration of more than 1 ⁇ M (or a concentration of more than 1 ⁇ M and less than 5 ⁇ M).
- CHIR 99021 itself may be used as a GSK3 ⁇ inhibitor.
- a suitable addition concentration is 1 ⁇ M or more, preferably 2 ⁇ M or more and less than 5 ⁇ M, more preferably 2 ⁇ M or more and 4.5 ⁇ M or less, particularly preferably 3 ⁇ M or more It is 4.5 ⁇ M or less.
- the addition concentration is a concentration showing an effect equivalent to the effect exhibited by CHIR99021 at a concentration exceeding 1 ⁇ M, preferably 2 ⁇ M or more and less than 5 ⁇ M CHIR99021 Concentration showing effect equivalent to the effect, more preferably concentration showing effect equivalent to the effect shown by CHIR 99021 of more than 2 ⁇ M and less than 4.5 ⁇ M, particularly preferably showing effect equivalent to the effect shown by CHIR 99021 of 3 ⁇ M to 4.5 ⁇ M It is taken as concentration.
- Neural crest maintaining multipotency over a long culture period such as more than 9 weeks (63 days) by suspension culturing neural crest cells in the presence of the concentration of GSK3 ⁇ inhibitor and bFGF It becomes possible to culture and proliferate cells.
- multipotency maintained neural crest cells have the ability to differentiate into neural cells, glial cells and mesenchymal stromal cells, or in addition to osteocytes, cartilage. Ability to differentiate into cells, corneal cells and pigment cells.
- the "multipotency maintained neural crest cells” can be evaluated by a plurality of methods. Although the method is not particularly limited, for example, a method of inducing differentiation of neural crest cells to be evaluated to nerve cells, glial cells, mesenchymal stromal cells and the like can be mentioned. If neural crest cells to be evaluated can actually be differentiated into neurons, glial cells, mesenchymal stromal cells, etc., neural crest cells to be evaluated are “neural crest cells with maintained multipotency” It can be determined that there is. Another method is, for example, a method of measuring the expression of a marker protein or a gene.
- the transcription factor SOX10 is expressed, it can be judged that the neural crest cells to be evaluated are “neural crest cells maintaining multipotency”. Detection of SOX10 can be performed using an immunological assay using an antibody specific for the marker protein, such as ELISA, immunostaining, flow cytometry and the like.
- the marker gene can be detected using nucleic acid amplification methods and / or nucleic acid detection methods known in the art, such as RT-PCR, microarray, biochip and the like.
- a reporter protein for example, Nano-Lantern (Saito K. et al., "Luminescent proteins for high-speed single-cell and whole-body imaging.” Nat. Comm.
- the cell is a cell that expresses a fusion protein of SOX10 and a reporter protein under the control of the SOX10 promoter.
- Methods of detection eg, measuring fluorescence intensity
- the evaluation of the “effect above 1 ⁇ M” (or “the concentration above 1 ⁇ M and below 5 ⁇ M”) of the GSK3 ⁇ inhibitor can be evaluated based on the GSK3 ⁇ inhibitory activity.
- the GSK3 ⁇ inhibitory activity of GSK3 ⁇ inhibitors can be measured by a method known per se, for example Patsch et al., Nature cell biology, 2015, 17 (8): 994-1003, Uno et al., Brain Res., 2009 , 1296: 148-163.
- GSK3 ⁇ inhibitory activity can be measured using the gene expression regulatory function of GSK3 ⁇ in the Wnt / ⁇ -catenin pathway (in particular, the phosphorylation function of ⁇ -catenin) as an indicator.
- cells in which the expression of a reporter gene is suppressed under the control of GSK3 ⁇ are cultured in the presence and absence of a GSK3 ⁇ inhibitor, and (ii) in the presence and not of a GSK3 ⁇ inhibitor Measuring the expression level of the reporter gene in the presence, and (iii) based on the increase in the expression level of the reporter gene in the presence of the GSK3 ⁇ inhibitor relative to the expression level of the reporter gene in the absence of the GSK3 ⁇ inhibitor
- the GSK3 ⁇ inhibitory activity of GSK3 ⁇ inhibitors is determined (see Example 9).
- the GSK3 ⁇ inhibitor exhibits the same inhibitory activity as GSK3 ⁇ inhibitory activity (% inhibition) exhibited by CHIR99021 at a concentration of more than 1 ⁇ M
- the GSK3 ⁇ inhibitor exhibits “equivalent to the effect exhibited by CHIR99021 at a concentration of more than 1 ⁇ M (GSK3 ⁇ inhibitory activity equivalent to that exhibited by CHIR 99021).
- the "equivalent" value (% inhibition) means 30%, 25%, 20%, 15%, 10%, 8%, 6%, 5%, 4% plus or minus respectively with respect to the reference value , 3%, 2% or 1%, preferably in the range of 15%, 10%, 5% or 1%, respectively plus or minus.
- the GSK3 ⁇ inhibitor When neural crest cells are cultured in a medium containing a GSK3 ⁇ inhibitor, “multipotency is maintained for a period equivalent to that in the case where neural crest cells are cultured in a medium containing CHIR 99021 at a concentration of more than 1 ⁇ M
- the GSK3 ⁇ inhibitor has an effect equivalent to the effect exhibited by CHIR 99021 at a concentration of 1 ⁇ M or more (a neural crest cell equivalent to the effect exhibited by CHIR 99021 (Proliferation activity).
- the “equivalent” value is 30%, 25%, 20%, 15%, 10%, 8%, 6%, 5%, 4%, plus or minus, respectively, with respect to the reference value. It shows values which vary up to 3%, 2% or 1%, preferably in the range of plus or minus respectively 15%, 10%, 5% or 1%.
- the concentration is 1 ⁇ M or more, preferably 2 ⁇ M or more and less than 5 ⁇ M, more preferably 2 ⁇ M or more and 4.5 ⁇ M or less, particularly preferably 3 ⁇ M or more and 4.5 ⁇ M or less.
- CHIR 99021 the effect of proliferating neural crest cells while maintaining differentiation ability for a long period is high at 2 ⁇ M or more and less than 5 ⁇ M, and in particular, it is clear that it is the highest at 3 ⁇ M or more and 4.5 ⁇ M or less.
- the concentration is higher than 0.1 ⁇ M, preferably 0.5 ⁇ M or more, more preferably 1 ⁇ M or more.
- CP21R7 As for CP21R7, it has been revealed that the effect of proliferating neural crest cells while maintaining differentiation ability for a long period is high at 0.5 ⁇ M or more and 1 ⁇ M or less. Specifically, it was possible to culture and proliferate neural crest cells which maintained multipotency for 84 days (12 weeks) or more at a CP21 R7 concentration of 0.5-1 ⁇ M. On the other hand, at 0.1 ⁇ M, a decrease in the number of cells maintaining pluripotency was observed in 3 weeks of culture (day 21).
- the addition concentration of bFGF is not particularly limited, and is, for example, 10 to 200 ng / ml, preferably 20 to 40 ng / ml.
- the medium may be supplemented with a TGF ⁇ inhibitor and / or epidermal growth factor (EGF) in addition to the GSK3 ⁇ inhibitor and bFGF.
- TGF ⁇ inhibitor those described above can be used without particular limitation.
- the preferred TGF ⁇ inhibitor is at least one selected from the group consisting of SB431542, A83-01, LDN193189, Wnt3A / BIO, BMP4, GW788388, SM16, IN-1130, GW6604 and SB505124.
- a particularly preferred TGF ⁇ inhibitor is SB431542.
- the concentration of the TGF ⁇ inhibitor is appropriately adjusted depending on the type of the TGF3 ⁇ inhibitor to be added, and is, for example, 1 to 50 ⁇ M, preferably 5 to 20 ⁇ M.
- the addition concentration is not particularly limited, and can be, for example, 1 to 40 ⁇ M, preferably 5 to 20 ⁇ M, and particularly 10 ⁇ M.
- the addition concentration of EGF is not particularly limited, and is, for example, 5 to 100 ng / ml, preferably 20 to 40 ng / ml.
- the neural crest cells obtained in step (1) are detached from the culture vessel and then dispersed in the medium, and cell aggregates are formed while homogenizing the medium components and oxygen concentration in the medium by stirring or shaking.
- a suitable agitation speed is appropriately set depending on the cell density and the size of the culture vessel, but excessive agitation or shaking physically stresses the cells and inhibits cell aggregate formation. Therefore, the medium components and the oxygen concentration in the medium can be homogenized, and the stirring or shaking speed is controlled so as not to inhibit cell aggregate formation. It is also possible to perform suspension culture without settling or shaking.
- the culture temperature is, but not limited to, 30 to 40 ° C. (eg, 37 ° C.).
- the carbon dioxide concentration in the culture vessel is, for example, about 5%.
- the culture period in this step may be a period in which the target number of cells can be obtained.
- the proportion of neural crest cells maintaining multipotency in the cultured cell population is at least 20% or more, 30% or more, 40% or more, preferably 50% or more, 60% or more, 70% or more, more preferably Can maintain 80% or more, 90% or more, 95% or more.
- appropriate cell passaging is performed. Passage is performed, for example, every 5 to 8 days after seeding.
- the passage interval is a period sufficient for expansion of the cell aggregate and shorter than a period during which the cell aggregate becomes too large and oxygen and nutrients are difficult to reach cells inside the cell aggregate.
- the period during which it is possible to culture and proliferate neural crest cells maintaining multipotency by this process is not particularly limited.
- 7, 14, 21, 28, 35 days , 42, 49, 56, 63, 70, 77, 84, 91, 98, 105, or 112 days or more preferably 35 days or more, more preferably 42 days or more 63 days or more are more preferable, 84 days or more are particularly preferable, and 112 days or more are most preferable.
- the present invention also provides a medium containing neural crest cells, which is used in the method of producing and expanding neural crest cells described above.
- the preferred composition of the culture medium is as described above.
- the present invention also provides a frozen stock comprising neural crest cells, which is obtained by the method of producing and proliferating neural crest cells described above. These neural crest cells are positive for SOX10 expression and positive for p75 expression of the cell surface antigen marker of NCC.
- the frozen stock can be produced by separating neural crest cells obtained by the method of producing and growing neural crest cells from the culture medium, suspending it in a cryopreservation solution and freezing it. Separation of neural crest cells from the medium may be performed by cell strainer or centrifugation. The separated cells may be washed as necessary.
- the frozen stock may comprise other cell populations in addition to neural crest cells, but preferably comprises purified neural crest cells. Purification of neural crest cells can be performed, for example, by separating from other cell populations by cell sorting using marker expression as described above as an index.
- a reagent conventionally used for cryopreservation of cells may be used for example, Cryostem Freezing Medium and CELLBANKER (registered trademark) are commercially available.
- the frozen stock can be used as a starting material for inducing differentiation from neural crest cells to obtain neurons, glial cells, mesenchymal stromal cells, osteocytes, chondrocytes, corneal cells and pigment cells.
- frozen stocks can be used to create a tissue model composed of neural crest cells.
- the method for producing nerve cells, glial cells, mesenchymal stromal cells, bone cells, chondrocytes, corneal cells or pigment cells according to the present invention comprises the following steps. Among these, the step (i) is the same as the step (2) of the method for producing neural crest cells according to the present invention or the method for proliferating neural crest cells according to the present invention.
- step (I) A step of suspension culture of neural crest cells in a medium containing a GSK3 ⁇ inhibitor and basic fibroblast growth factor (bFGF), a concentration showing an effect equivalent to that exhibited by CHIR 99021 at a concentration of more than 1 ⁇ M
- the medium comprises a GSK3 ⁇ inhibitor of (Ii) at least one neural crest cell obtained in step (i) is selected from the group consisting of nerve cells, glial cells, mesenchymal stromal cells, bone cells, chondrocytes, corneal cells and pigment cells A step of differentiating into cells.
- induction of differentiation into neural cells can be performed based on the method described in Non-Patent Document 1 or Non-Patent Document 4.
- neural crest cells are seeded on a plate coated with Fibronectin, N-2 Supplement (17502-048, Gibco), BDNF (028-16451, Wako Pure Chemical Industries, Ltd.), GDNF (074-06264, Wako Pure Chemical Industries, Ltd.), NT Change to DMEM / F12 supplemented with -3 (141-06643, Wako Pure Chemical Industries, Ltd.) and NGF (141-07601, Wako Pure Chemical Industries, Ltd.), and culture the cells at 37 ° C. under 5% CO 2 for 14 days.
- neural crest cells are seeded on a plate and cultured in CDM medium containing 10 ⁇ M SB431542 and 1 ⁇ M CHIR99021 for 1 day, and then B-27 Supplement (17504-044, Gibco), N-2 Supplement, L-glutamine (073- Change to Neurobasal medium (21103-049, Gibco) supplemented with 05391 (Wako Pure Chemical Industries), Penicillin / Streptomycin (15140-122, Gibco), BDNF, GDNF, NT-3, NGF, 37 ° C, 5% CO Incubate under 2 for 35 days. After culture, the cells are fixed with 4% paraformaldehyde, and differentiation appearance of TUBB3 protein expressing neurons is confirmed by immunostaining.
- the induction of differentiation into glial cells can be carried out by the same method as the induction of differentiation into neurons according to the method described in Non-patent Document 1 or Non-patent Document 4. After termination of the differentiation induction period, differentiation and appearance to glial cells are confirmed by expression of GFAP protein.
- the induction of differentiation into mesenchymal stromal cells can be performed based on the method described in Non-Patent Document 1. Specifically, for example, neural crest cells are seeded in a dish at a density of 6.5 ⁇ 10 4 cells / cm 2 and cultured in a CDM medium containing 10 ⁇ M SB431542 and 1 ⁇ M CHIR99021 for 1 day. One day later, the medium is replaced with ⁇ MEM (Nacalai Tesque) containing 10% fetal bovine serum (FBS, Nichirei). After about 4 days, morphological changes of cells are observed.
- ⁇ MEM Nacalai Tesque
- FBS fetal bovine serum
- Cell passaging is performed by detaching the cells with 0.25% trypsin-EDTA (GIBCO) and plating at a density of 1.0 ⁇ 10 4 cells / cm 2 .
- FACS analysis is performed on the expression of human mesenchymal stromal cell surface antigen markers CD73, CD44, CD45 and CD105 to confirm differentiation into mesenchymal stromal cells.
- the induction of differentiation into bone cells can be performed based on the method described in Non-Patent Document 1. Specifically, for example, 2.5 ⁇ 10 5 of the mesenchymal stromal cells described above are seeded on a plate coated with Fibronectin, 10% FBS, 0.1 ⁇ M dexa-methasone, 50 ⁇ g / ml ascorbic acid and 10 mM ⁇ -glycerophosphate Incubate with ⁇ MEM for 2 weeks. The medium is changed once every two days for the first week only. Calcified nodules are detected by alizanine red staining to confirm differentiation into osteocytes.
- the induction of differentiation into chondrocytes can be performed based on the method described in Non-Patent Document 1.
- the induction of differentiation into corneal cells can be performed based on the method described in Non-Patent Document 1. Specifically, for example, neural crest cells are seeded on a plate coated with Fibronectin, and cultured in CDM medium containing 10 ⁇ M SB431542 and 1 ⁇ M CHIR99021 for 1 day. One day later, the medium is replaced with a conditioned medium prepared by culturing human corneal endothelial cells in CDM medium. The medium is changed once every two days, and the expression of ZO-1, which is a marker molecule of corneal cells, is confirmed by immunostaining, and the expression of COL4A1 and COL8A1 is confirmed by qPCR 12 days after the induction of differentiation induction.
- ZO-1 which is a marker molecule of corneal cells
- the induction of differentiation into pigment cells can be performed based on the method described in Non-Patent Document 1. Specifically, for example, neural crest cells are seeded on a plate coated with Fibronectin and cultured in a CDM medium containing 10 ⁇ M SB and 1 ⁇ M CHIR for 1 day. One day later, the medium is replaced with a CDM medium containing 1 ⁇ M CHIR, 25 ng / ml BMP4 and 100 nM endothelin-3 (American Peptide Company). Medium is changed once every two days. Differentiation of pigment cells is confirmed on day 7 by expression of the MITF and c-KIT genes.
- the obtained nerve cells, glial cells, mesenchymal stromal cells, osteocytes, chondrocytes, corneal cells and pigment cells can be used as cell preparations for regenerative medicine.
- Neural crest cells have multipotency and self-proliferation ability to differentiate into many types of cells such as nerve cells, glial cells, mesenchymal stromal cells, bone cells, chondrocytes, corneal cells and pigment cells. Cells with Based on such ability found in neural crest cells, application to cell medicines and the like for regenerative medicine of neural crest cells is expected. Mass production is possible if neural crest cells maintaining multipotency can be efficiently maintained or expanded. Furthermore, if it is possible to prepare a stock of neural crest cells maintaining multipotency, it is useful as a raw material of cellular medicine.
- a cell for example, neural crest cell
- a target cell for example, nerve cell
- Example 1 Expansion culture of neural crest cells
- Human iPSCs were differentiated into neural crest cells (Nural Crest Cells: NCC) according to the method described in Non-Patent Document 1.
- iPSC SOX10-Nano-Lantern Reporter Human iPSC (201B7 strain) described in Non-Patent Document 4 was used.
- the fluorescent protein Nano-Lantern (Saito K. et al., "Luminescent proteins for high-speed single-cell and whole-body imaging.” Nat. Comm. , 2012; 3: 1262.), and expresses a fusion protein of SOX10 and Nano-Lantern under the control of the promoter of SOX10.
- iPSCs were seeded on Matrigel-coated dishes and adherent cultured in TeSR1 medium for 4 days, then adherent cultured in CDM medium containing 10 ⁇ M SB431542 (TGF ⁇ inhibitor) and 1 ⁇ M CHIR99021 (GSK3 ⁇ inhibitor) for 10 days to differentiate into NCC .
- NCC were detached from the dish and suspended in CDM medium containing 10 ⁇ M SB431542, 2 ⁇ M CHIR99021, 40 ng / ml bFGF and 40 ng / ml EGF. Cell passage was performed every 7 days.
- the change in total cell number after the start of expansion culture is shown in FIG. 1, and the change in SOX 10 expression positive cell rate is shown in FIG.
- cell aggregates were dissociated using StemPro Accutase Cell Dissection Reagent (Invitrogen) to prepare single cell solution.
- a single cell solution suspended in FACS buffer (2% BSA HBSS) supplemented with 1 ⁇ g / m PI (Propidium Iodide, Wako) is filtered through a 35 ⁇ m nylon mesh tube (BD Falcon), and then the flow cytometer ( The cells were subjected to analysis by FACS Aria, BD Biosciences), and the percentage of GFP-positive cells in living cells (PI negative cells) was measured.
- SOX10 expression is a marker of pluripotent NCC. This result indicates that NCC is proliferating with maintaining differentiation ability over a long culture period.
- Example 2 examination of concentration of medium additive
- the effects of the concentrations of GSK3 ⁇ inhibitor, bFGF and EGF in NCC expansion culture on the self-proliferation ability and differentiation ability of NCC were examined.
- the expansion culture was performed in the same manner as in Example 1 for the conditions not particularly mentioned below.
- FIG. 3 shows changes in the total cell number when the concentrations of bFGF and EGF are 20 ng / ml (A) or 40 ng / ml (B) and the concentration of CHIR 99021 is 1, 2, 3 and 5 ⁇ M.
- the cell proliferation rate per week at a CHIR 99021 concentration of 1 ⁇ M or 2 ⁇ M was 8-30 times (see also Example 8 below).
- FIG. 4 shows the change in total cell number when the concentrations of bFGF and EGF are 40 ng / ml and the concentration of CHIR 99021 is 3, 3.5, 4, 4.5, 5 ⁇ M. Concentrations of bFGF, EGF and CHIR99021 did not affect changes in total cell number.
- FIG. 5 shows changes in the percentage of SOX10-positive cells when the concentrations of bFGF and EGF are 20 ng / ml (A) or 40 ng / ml (B) and the concentrations of CHIR 99021 are 1, 2, 3 and 5 ⁇ M.
- FIG. 6 shows changes in the percentage of SOX10-positive cells when the concentrations of bFGF and EGF are 40 ng / ml and the concentration of CHIR 99021 is 3, 3.5, 4, 4.5, 5 ⁇ M.
- concentration of CHIR99021 was 3-4.5 ⁇ M, a SOX10 expression-positive cell rate of 90% or more was confirmed also in a long-term culture period (culture day 121).
- Example 3 Examination of GSK3 ⁇ inhibitor
- the expansion culture of NCC was performed in the same manner as in Example 1 except that the GSK3 ⁇ inhibitor used for the expansion culture of NCC was changed from CHIR99021 to CP21R7.
- the concentration of CP21R7 was 0.1, 0.5 or 1 ⁇ M.
- the change in the SOX10 expression positive cell rate is shown in FIG.
- CP21 R7 concentration of 0.5 or 1 ⁇ M a high SOX10 expression positive cell rate was confirmed even on the 84th day of the culture.
- the SOX10 expression positive cell ratio began to decrease in a short culture period (culture day 21).
- Example 4 Induction of differentiation of neural crest cells into neurons
- the differentiation ability of NCC expanded and cultured in Example 1 to neurons was confirmed.
- the induction of differentiation into neural cells was performed based on the method described in Non-Patent Document 4. Plates were seeded with 5 ⁇ 10 5 NCC expanded and cultured for 30 days, and cultured in CDM medium containing 10 ⁇ M SB431542 and 1 ⁇ M CHIR99021 for 1 day.
- the cells were fixed by adding 4% paraformaldehyde (Wako Pure Chemical Industries) and incubating at 4 ° C. for 1 hour.
- Alexa 488-labeled secondary antibody (Invitrogen) which is made to react with anti-TUBB3 antibody (845502, Bioregend) and anti-GFAP antibody (ab7260, abcam) as primary antibody and further combined with the primary antibody-immunized animal as secondary antibody And after sequentially reacting with Alexa 568 labeled secondary antibody, they were observed with a fluorescence microscope. It was confirmed that neurons expressing TUBB protein and glial cells expressing GFAP protein were differentiated and appeared from NCC maintained for 30 days.
- Example 5 Differentiation induction of neural crest cells to pigment cells
- the differentiation ability of NCC expanded and cultured in Example 1 to neurons was confirmed. Induction of differentiation into melanocytes was performed based on the method described in Non-Patent Document 1.
- the NCC expanded and maintained for 84 days were seeded on a Fibronectin-coated 6-well plate and cultured for 1 day in a CDM medium containing 10 ⁇ M SB431542 and 1 ⁇ M CHIR99021.
- the medium was changed to a CDM medium supplemented with BMP4 and Endothelin-3 (Wako Pure Chemical Industries, Ltd.), and cultured at 37 ° C. under 5% CO 2 for 7 days.
- the medium was changed every two days during the above culture period.
- the cells were fixed by adding 4% paraformaldehyde and incubating at 4 ° C. for 1 hour. It was reacted with anti-MITF antibody (Sigma) as the primary antibody and further reacted sequentially with Alexa 568-labeled secondary antibody (Invitrogen) matched to the immunized animal of the primary antibody as the secondary antibody, and observed with a fluorescence microscope . It was confirmed that melanocytes expressing MITF protein were differentiated and appeared from NCC maintained for 84 days.
- Example 6 induction of differentiation of neural crest cells into mesenchymal stromal cells
- the ability of NCC expanded and cultured in Example 1 to differentiate into mesenchymal stromal cells was confirmed. Induction of differentiation into mesenchymal stromal cells was performed based on the method described in Non-Patent Document 1.
- the NCC expanded and maintained for 84 days were seeded on a Fibronectin-coated 6 cm diameter cell culture dish and cultured for 1 day in a CDM medium containing 10 ⁇ M SB431542 and 1 ⁇ M CHIR99021. One day later, the medium was changed to CTS StemPro MSC SFM (Gibco, A1033201).
- the passage of cells was carried out by detaching the cells with StemPro Accutase Cell Dissociation Reagent (Invitrogen) and seeding at a density of 1.0-2.0 ⁇ 10 6 cells / dish (in the case of 10 cm dish).
- CD73 antibody (BD), CD44 antibody (BD), CD45 antibody (BD), which is an antibody of the surface antigen marker of human mesenchymal stromal cells
- CD105 antibody eBioscience
- Example 7 induction of differentiation of neural crest cells into osteocytes, chondrocytes or adipocytes
- the ability of NCC expanded and cultured in Example 1 to differentiate into osteocytes, chondrocytes or adipocytes was confirmed.
- Induction of differentiation into osteocytes, chondrocytes or adipocytes was performed based on the method described in Non-Patent Document 1.
- NCC expanded and maintained for 84 days were differentiated into mesenchymal stromal cells by the method described in Example 6.
- Mesenchymal stromal cells are seeded at 4.0 ⁇ 10 4 cells / well in a 12-well plate coated with Fibronectin, 4 in ⁇ MEM containing 10% FBS, 0.1 ⁇ M dexa-methasone, 50 ⁇ g / ml ascorbic acid and 10 mM ⁇ -glycerophosphate
- the cells were cultured for a week to induce differentiation into bone cells.
- the medium was changed once every 2-3 days. Calcified nodules were detected by alizanine red staining to confirm differentiation into osteocytes.
- Induction of differentiation into chondrocytes was performed as follows. In first 84 days enlarged maintenance culture concentrations of 1.5 ⁇ 10 5 cells / 5 [mu] l mesenchymal stromal cells induced to differentiate from NCC, 1% (v / v ) ITS + premix (BD), 0.17mM AA2P, 0.35mM Proline (Sigma), 0.1 mM dexamethasone (Sigma), 0.15% (v / v) glucose (Sigma), 1 mM Na-pyruvate (Invitrogen), 2 mM GlutaMax, 0.05 mM MTG, 40 ng / ml PDGF-BB and 1% (v / v) v) The cells were suspended in DMEM: F12 (Invitrogen) containing FBS (Nichirei), and 5 ⁇ l / well of the cell suspension was spotted on a 12-well plate coated with Fibronectin and cultured for 1 hour.
- DMEM F12 (
- Induction of differentiation into adipocytes was performed as follows. Mesenchymal stromal cells induced to differentiate from NCC expanded for 84 days are seeded at 4.0 ⁇ 10 4 cells / well on mesenchymal stromal cells coated with Fibronectin, hMSC-Human Mesenchymal Stem Cell Adipogenic Differentiation Medium Bullet Kit (Lonza Japan) The cells were cultured for 4 weeks in the medium attached to the The medium was changed once every 2-3 days. The oil droplets in the cells stained by Oil Red O staining were detected to confirm differentiation into adipocytes.
- Alizarin red S staining of bone cells was performed as follows. The cells were fixed by first adding 100% ethanol and incubating at room temperature for 10 minutes. After reacting with Alizarin-Red staining Solution (MERCK MILLIPORE), washing with water, drying, and observation with a microscope. Alcian blue staining of chondrocytes is carried out by reacting cells fixed by adding 4% paraformaldehyde (Wako Pure Chemical Industries) and incubating for 30 minutes at room temperature with 1% Alcian blue staining solution (MUTO PURE CHEMICALS CO.) Then, it was carried out by washing with water and drying.
- MUTO PURE CHEMICALS CO. Alcian blue staining solution
- Example 8 Examination of concentration of medium additive 2
- the effect of bFGF concentration in NCC expansion culture on the self-proliferation ability and differentiation ability of NCC was examined.
- the expansion culture was performed in the same manner as in Example 1 for the conditions not particularly mentioned below.
- FIG. 8 shows the change in total cell number when the concentration of CHIR 99021 is 1.5 ⁇ M and the concentration of bFGF is 10, 12.5, 15.0, 17.5 ng / ml
- FIG. 9 shows the change in SOX 10 expression positive cell rate. bFGF concentration did not affect the positive rate of SOX10 expression.
- the change behavior of the total cell number was almost the same in the concentration range of bFGF described above, and the cell proliferation rate was in the range of 6-13 times in one week.
- the weekly cell growth rate in Example 2 was 8-30 times higher than the higher range at CHIR 99021 concentration 1 ⁇ M or 2 ⁇ M, bFGF concentration 20 ng / ml or 40 ng / ml (see FIG. 3), bFGF It contributed to the self-proliferation ability of NCC, suggesting that 20-40 ng / ml is its preferred concentration range.
- GSK3 ⁇ functions in the phosphorylation of ⁇ -catenin in the absence of Wnt-ligand. Because phosphorylated ⁇ -catenin is ubiquitinated and degraded in the proteasome, gene expression downstream of the Wnt- ⁇ -catenin pathway is suppressed. In this pathway, when GSK3 ⁇ is inhibited, ⁇ -catenin is not degraded and translocates into the nucleus, and other transcription factors such as T-Cell Factor (TCF) / Lymphoid Enhancer Factor (LEF) and Wnt- ⁇ - Induce gene expression downstream of the catenin pathway.
- TCF T-Cell Factor
- LEF Lymphoid Enhancer Factor
- LEF / TCF-bla HCT-116 Cell Line (Thermo Fisher, K1676) is incorporated so that LEF / TCF can be stably expressed, and a reporter gene (beta-lactamase reporter gene) is under the control of LEF / TCF. It is incorporated to be expressed. Expression of the reporter gene in the absence of Wnt-ligand in this cell line is an indicator of inhibition of GSK3 ⁇ function (phosphorylation function of ⁇ -catenin). The GSK3 ⁇ inhibitory activity of GSK3 ⁇ inhibitor was measured by an assay using the same cell line.
- the assay was performed in accordance with the Invitrogen protocol (CellSensor® LEF / TCF-bla HCT 116 Cell-based Assay Protocol). Specifically, LEF / TCF-bla HCT-116 Cell in assay medium (OPTI-MEM, 0.5% dialyzed FBS, 0.1 mM NEAA, 1 mM Sodium Pyruvate, 100 U / mL / 100 ⁇ g / mL Pen / Strep) Suspended (312,500 cells / mL). The cell suspension was seeded in each well of the assay plate (10,000 cells / well) and cultured for 16-24 hours.
- GSK3 ⁇ inhibitor (here, CHIR 99021 was used) was added to the wells (concentration 0.316, 1.00, 3.16, 10.0, 31.6, 100, 316, 1000, 3160, 10000 nM) and cultured for 5 hours.
- a beta-lactamase substrate solution LiveBLAzer-FRET B / G (CCF4-AM) Substrate Mixture
- LiveBLAzer-FRET B / G (CCF4-AM) Substrate Mixture was added to each well (8 ⁇ L / well) and incubated for 2 hours.
- the fluorescence value was measured with a fluorescence plate reader. The measurements were performed in two wells for each concentration condition.
- the results are shown in "Table 1".
- the GSK3 (beta) inhibitory activity which 1 micromol CHIR99021 shows is 113.5 (average value of two wells) by a fluorescence value.
- the fluorescence value under each concentration condition is measured by this experimental system, and a calibration curve is prepared according to a standard method, which is equivalent to the GSK3 ⁇ inhibitory activity (113.5 in fluorescence value) exhibited by 1 ⁇ M CHIR99021. It is possible to determine the concentration showing the GSK3 ⁇ inhibitory activity of
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Zoology (AREA)
- Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Genetics & Genomics (AREA)
- Wood Science & Technology (AREA)
- Cell Biology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Rheumatology (AREA)
- Developmental Biology & Embryology (AREA)
- Neurology (AREA)
- Neurosurgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dermatology (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Description
[発明の背景]
[1]以下の工程を含む、神経堤細胞の製造方法:
(1)神経堤細胞を得る工程、
(2)GSK3β阻害剤及び塩基性線維芽細胞成長因子(bFGF)を含む培地中で神経堤細胞を浮遊培養する工程であって、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤を、該培地が含む工程。
[1a]前記GSK3β阻害剤の濃度が、1μMを超え5μM未満の濃度のCHIR99021が示す効果と同等の効果を示す濃度である、[1]の製造方法。
[1b]前記効果が、GSK3β阻害剤のGSK3β阻害活性に基づいて評価され、
GSK3β阻害剤のGSK3β阻害活性は、以下の手順によって決定される、[1]の製造方法。
(i)GSK3βの制御下でレポーター遺伝子の発現が抑制された細胞を、GSK3β阻害剤の存在下及び非存在下で培養する手順、
(ii)GSK3β阻害剤の存在下及び非存在下におけるレポーター遺伝子の発現量を測定する手順、及び、
(iii)GSK3β阻害剤の非存在下におけるレポーター遺伝子の発現量に対するGSK3β阻害剤の存在下でのレポーター遺伝子の発現量の増加量に基づいて、GSK3β阻害剤のGSK3β阻害活性を決定する手順。
[2]前記培地がさらにTGFβ阻害剤を含む、[1]の製造方法。
[3]前記培地がCDM培地である、[1]の製造方法。
[4]前記培地がさらに上皮成長因子(EGF)を含む、[1]の製造方法。
[5]前記GSK3β阻害剤がCHIR99021、CP21R7、CHIR98014、LY2090314、ケンパウロン、AR-AO144-18、TDZD-8、SB216763、BIO、TWS-119及びSB415286からなる群より選択される少なくとも一つである、[1]の製造方法。
[6]前記GSK3β阻害剤がCHIR99021である、[5]の製造方法。
[6a]CHIR99021の濃度が1μMを超え5μM未満である、[6]の製造方法。
[6b]CHIR99021の濃度が2以上4.5μM以下である、[6a]の製造方法。
[6c]前記GSK3β阻害剤がCP21R7である、[5]の製造方法。
[6d]CP21R7の濃度が0.5以上1μM以下である、[6c]の製造方法。
[7]前記TGFβ阻害剤がSB431542、A83-01、LDN193189、Wnt3a/BIO、BMP4、GW788388、SM16、IN-1130、GW6604及びSB505124からなる群より選択される少なくとも一つである、[2]の製造方法。
[7a]前記bFGFの濃度が20-40ng/mlである、[1]-[7]のいずれかの製造方法。
[8]前記工程(2)において、神経堤細胞が播種後5~8日毎に継代される、[1]のいずれかの製造方法。
[9]前記工程(1)が、幹細胞から神経堤細胞を分化誘導する工程である、[1]のいずれかの製造方法。
[10]以下の工程を含む、神経堤細胞の増殖方法:
(I)GSK3β阻害剤及び塩基性線維芽細胞成長因子(bFGF)を含む培地中で神経堤細胞を浮遊培養する工程であって、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤を、該培地が含む工程。
[10a]前記GSK3β阻害剤の濃度が、1μMを超え5μM未満の濃度のCHIR99021が示す効果と同等の効果を示す濃度である、[10]の増殖方法。
[10b]前記培地がさらにTGFβ阻害剤を含む、[10]の増殖方法。
[10c]前記培地がCDM培地である、[10]の増殖方法。
[10d]前記培地がさらに上皮成長因子(EGF)を含む、[10]の増殖方法。
[10e]前記GSK3β阻害剤がCHIR99021、CP21R7、CHIR98014、LY2090314、ケンパウロン、AR-AO144-18、TDZD-8、SB216763、BIO、TWS-119及びSB415286からなる群より選択される少なくとも一つである、[10]の増殖方法。
[10f]前記GSK3β阻害剤がCHIR99021である、[10e]の増殖方法。
[10g]CHIR99021の濃度が1μMを超え5μM未満である、[10f]の製造方法。
[10h]CHIR99021の濃度が2以上4.5μM以下である、[10g]の製造方法。
[10i]前記GSK3β阻害剤がCP21R7である、[10e]の製造方法。
[10j]CP21R7の濃度が0.5以上1μM以下である、[10i]の製造方法。
[10k]前記TGFβ阻害剤がSB431542、A83-01、LDN193189、Wnt3a/BIO、BMP4、GW788388、SM16、IN-1130、GW6604及びSB505124からなる群より選択される少なくとも一つである、[10b]の増殖方法。
[10l]前記工程(I)において、神経堤細胞が播種後5~8日毎に継代される、[10]の増殖方法。
[11]GSK3β阻害剤、塩基性線維芽細胞成長因子(bFGF)及び神経堤細胞を含む培地であって、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤を含む培地。
[11a]前記GSK3β阻害剤の濃度が、1μMを超え5μM未満の濃度のCHIR99021が示す効果と同等の効果を示す濃度である、[11]の培地。
[12]さらにTGFβ阻害剤を含む、[11]の培地。
[13]前記培地がCDM培地である、[11]の培地。
[14]さらに上皮成長因子(EGF)を含む、[11]の培地。
[15]前記GSK3β阻害剤がCHIR99021、CP21R7、CHIR98014、LY2090314、ケンパウロン、AR-AO144-18、TDZD-8、SB216763、BIO、TWS-119及びSB415286からなる群より選択される少なくとも一つである、[11]の培地。
[16]前記GSK3β阻害剤がCHIR99021である、[15]の培地。
[16a]CHIR99021の濃度が1μMを超え5μM未満である、[16]の培地。
[16b]CHIR99021の濃度が2以上4.5μM以下である、[16a]の培地。
[16c]前記GSK3β阻害剤がCP21R7である、[15]の培地。
[16d]CP21R7の濃度が0.5以上1μM以下である、[16c]の製造方法。
[17]前記TGFβ阻害剤がSB431542、A83-01、LDN193189、Wnt3a/BIO、BMP4、GW788388、SM16、IN-1130、GW6604及びSB505124からなる群より選択される少なくとも一つである、[12]の培地。
[18][1]の製造方法で得られた神経堤細胞を含む凍結ストック。
[18a][1]の工程で得られた神経堤細胞を分離する工程と、
分離された神経堤細胞を細胞保存液に懸濁し、凍結する工程と、により得られる、[18]の凍結ストック。
[19]以下の工程を含む、神経細胞、グリア細胞、間葉系間質細胞、骨細胞、軟骨細胞、角膜細胞又は色素細胞の製造方法:
(i)GSK3β阻害剤及び塩基性線維芽細胞成長因子(bFGF)を含む培地中で神経堤細胞を浮遊培養する工程であって、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤を、該培地が含む工程、及び、
(ii)工程(i)で得られた神経堤細胞を、神経細胞、グリア細胞、間葉系間質細胞、骨細胞、軟骨細胞、角膜細胞及び色素細胞からなる群より選択される少なくとも一つの細胞に分化させる工程。
[19a]前記GSK3β阻害剤の濃度が、1μMを超え5μM未満の濃度のCHIR99021が示す効果と同等の効果を示す濃度である、[19]の製造方法。
[19b]前記培地がさらにTGFβ阻害剤を含む、[19]の製造方法。
[19c]前記培地がCDM培地である、[19]の製造方法。
[19d]前記培地がさらに上皮成長因子(EGF)を含む、[19]の製造方法。
[19e]前記GSK3β阻害剤がCHIR99021、CP21R7、CHIR98014、LY2090314、ケンパウロン、AR-AO144-18、TDZD-8、SB216763、BIO、TWS-119及びSB415286からなる群より選択される少なくとも一つである、[19]の製造方法。
[19f]前記GSK3β阻害剤がCHIR99021である、[19e]の製造方法。
[19g]CHIR99021の濃度が1μMを超え5μM未満である、[19f]の培地。
[19h]CHIR99021の濃度が2以上4.5μM以下である、[19g]の培地。
[19i]前記GSK3β阻害剤がCP21R7である、[19e]の培地。
[19j]CP21R7の濃度が0.5以上1μM以下である、[19i]の製造方法。
[19k]前記TGFβ阻害剤がSB431542、A83-01、LDN193189、Wnt3a/BIO、BMP4、GW788388、SM16、IN-1130、GW6604及びSB505124からなる群より選択される少なくとも一つである、[19b]の製造方法。
[19l]前記工程(i)において、神経堤細胞が播種後5~8日毎に継代される、[19]の製造方法。
[20] 以下の工程を含む、多能性を有する神経堤細胞を長期間培養する方法:
(1)神経堤細胞を得る工程、
(2)GSK3β阻害剤及び塩基性線維芽細胞成長因子を含む培地中で神経堤細胞を浮遊培養する工程であって、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤を、該培地が含む工程。
[20a]前記GSK3β阻害剤の濃度が、1μMを超え5μM未満の濃度のCHIR99021が示す効果と同等の効果を示す濃度である、[20]の培養方法。
[20b]前記培地がさらにTGFβ阻害剤を含む、[20]の培養方法。
[20c]前記培地がCDM培地である、[20]の増殖方法。
[20d]前記培地がさらに上皮成長因子(EGF)を含む、[20]の増殖方法。
[20e]前記GSK3β阻害剤がCHIR99021、CP21R7、CHIR98014、LY2090314、ケンパウロン、AR-AO144-18、TDZD-8、SB216763、BIO、TWS-119及びSB415286からなる群より選択される少なくとも一つである、[20]の増殖方法。
[20f]前記GSK3β阻害剤がCHIR99021である、[20e]の増殖方法。
[20g]CHIR99021の濃度が1μMを超え5μM未満である、[20f]の製造方法。
[20h]CHIR99021の濃度が2以上4.5μM以下である、[20g]の製造方法。
[20i]前記GSK3β阻害剤がCP21R7である、[20e]の製造方法。
[20j]CP21R7の濃度が0.5以上1μM以下である、[20i]の製造方法。
[20k]前記TGFβ阻害剤がSB431542、A83-01、LDN193189、Wnt3a/BIO、BMP4、GW788388、SM16、IN-1130、GW6604及びSB505124からなる群より選択される少なくとも一つである、[20b]の増殖方法。
[20l]前記工程(I)において、神経堤細胞が播種後5~8日毎に継代される、[20]の増殖方法。
[21] 塩基性線維芽細胞成長因子と、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤と、を含む培地の、多能性を有する神経堤細胞を長期間培養するための使用。
[21a]塩基性線維芽細胞成長因子と、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤の、神経堤細胞の培養における使用。
[21b]塩基性線維芽細胞成長因子と、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤の、神経堤細胞培地の製造のための使用。
また、「浮遊培養」とは、細胞を容器に付着させずに適切な培地中に単一細胞又は2以上の細胞からなる細胞隗(cell sphere)として分散させた状態で培養することを意味する。
マーカータンパク質の検出は、当該マーカータンパク質に特異的な抗体を用いた免疫学的アッセイ、例えば、ELISA、免疫染色、フローサイトメトリーなどを利用して行うことができる。マーカータンパク質に特異的な抗体としては、マーカータンパク質における特定のアミノ酸配列又はマーカータンパク質に結合した特定の糖鎖等に結合する抗体を用いることができる。また、細胞内に発現し、細胞表面には現れないマーカータンパク質(例えば転写因子またはそのサブユニットなど)の場合は、当該マーカータンパク質とともにレポータータンパク質を発現させ、当該レポータータンパク質を検出することによって対象とするマーカータンパク質を検出できる(例えば、非特許文献4)。この方法は、適当な細胞表面マーカーが認められない場合に好ましく用いられ得る。マーカー遺伝子の検出は、当該分野で公知の核酸増幅方法及び/又は核酸検出方法、例えば、RT-PCR、マイクロアレイ、バイオチップ及びRNAseq等を利用して行うことができる。
本発明に係る神経堤細胞の製造方法は以下の工程を含む。このうち工程(2)は、特に、本発明に係る神経堤細胞の増殖方法である。
(1)神経堤細胞を得る工程、
(2)GSK3β阻害剤及び塩基性線維芽細胞成長因子(bFGF)を含む培地中で神経堤細胞を浮遊培養する工程であって、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤を、該培地が含む工程。
神経堤細胞を得る工程(1)は、工程(2)に供するための神経堤細胞を得る工程である。工程(1)における神経堤細胞を得る方法は特に限定されず、例えば、幹細胞から神経堤細胞を分化誘導する方法、市販の神経堤細胞を購入する方法、及び、天然に存在する神経堤細胞を採取する方法等が挙げられる。
このほか、公開されているすべての論文(例えば、Shi Y., Ding S., et al., Cell Stem Cell, (2008) Vol3, Issue 5,568-574;、Kim JB., Scholer HR., et al., Nature, (2008) 454, 646-650;Huangfu D., Melton, DA., et al., Nature Biotechnology, (2008) 26, No 7, 795-797)、あるいは特許(例えば、特開2008-307007号、特開2008-283972号、US2008-2336610、US2009-047263、WO2007-069666、WO2008-118220、WO2008-124133、WO2008-151058、WO2009-006930、WO2009-006997、WO2009-007852)に記載されている当該分野で公知の人工多能性幹細胞のいずれも用いることができる。
人工多能性幹細胞株としては、NIH、理研、京都大学等が樹立した各種iPSC株が利用可能である。例えば、ヒトiPSC株であれば、理研のHiPS-RIKEN-1A株、HiPS-RIKEN-2A株、HiPS-RIKEN-12A株、Nips-B2株等、京都大学の253G1株、253G4株、1201C1株、1205D1株、1210B2株、1383D2株、1383D6株、201B7株、409B2株、454E2株、606A1株、610B1株、648A1株、1231A3株、FfI-01s04株等が挙げられ、1231A3株が好ましい。
SB431542(4-[4-(1,3-benzodioxol-5-yl)-5-(2-pyridinyl)-1H-imidazol-2-yl]-benzamide)を用いる場合、添加濃度は、特には10μMとできる。
GSK3β阻害剤はこれらに限定されるものではなく、GSK3βのmRNAに対するアンチセンスオリゴヌクレオチドやsiRNA、GSK3βに結合する抗体、ドミナントネガティブGSK3β変異体等もGSK3β阻害剤として使用することができ、これらは商業的に入手可能であるか公知の方法に従って合成することができる。
CHIR99021を用いる場合、添加濃度は、特に限定されないが、例えば0.1~1μM、好ましくは0.5~1μM、特には1μMとできる。
なお、「マトリゲル」は、細胞外マトリックスタンパク質を豊富に含むEngelbreth-Holm-Swarm(EHS)マウス肉腫から抽出した可溶性基底膜調製品のことであり、マトリゲルをコーティングした培養容器は商業的に入手が可能である。マトリゲルの主成分は、ラミニン、コラーゲンIV、ヘパラン硫酸プロテオグリカン、およびエンタクチン/ニドジェン1,2である。マトリゲルは、これらの主成分に加えて、TGFβ、上皮細胞増殖因子、インシュリン様成長因子、線維芽細胞増殖因子、組織プラスミノーゲン活性化因子3,4、およびEHS腫瘍に自然に産生される他の増殖因子を含む。
培養温度は、特に限定されないが、30~40℃(例えば、37℃)で行う。また、培養容器中の二酸化炭素濃度は例えば5%程度である。
, 127(8):1607-1616、 Dupin et al., Developmental biology, 2012, 366(1):83-95、Nagoshi et al., Cell Stem Cell 2, April 2008, 392-403)。このような神経堤細胞を公知の方法(例えば、Motohashi et al., Biology open, 2016, 5:311-322、Pfaltzgraffet al., Journal of Visualized Experiments, 2012, 64:4134)を用いて採取し、工程(2)に供することも可能である。
神経堤細胞の拡大培養工程(2)は、GSK3β阻害剤及び塩基性線維芽細胞成長因子(bFGF)を含む培地中で神経堤細胞を浮遊培養する工程である。
好ましいGSK3β阻害剤は、CHIR99021、CP21R7、CHIR98014、LY2090314、ケンパウロン、AR-AO144-18、TDZD-8、SB216763、BIO、TWS-119及びSB415286からなる群より選択される少なくとも一つである。特に好ましいGSK3β阻害剤は、CHIR99021又はCP21R7である。
当該濃度のGSK3β阻害剤とbFGFとの存在下で神経堤細胞を浮遊培養することによって、9週(63日)を超えるような長期の培養期間にわたって、多能性(multipotency)を維持した神経堤細胞を培養し増殖させることが可能となる。
当該測定結果において、GSK3β阻害剤が1μMを超える濃度のCHIR99021が示すGSK3β阻害活性(阻害%)と同等の阻害活性を示す場合、当該GSK3β阻害剤は「1μMを超える濃度のCHIR99021が示す効果と同等の効果」(CHIR99021が示す効果と同等のGSK3β阻害活性)を示すと判断される。ここで、「同等」な値(阻害%)とは、基準値に対してプラス又はマイナスそれぞれ30%、25%、20%、15%、10%、8%、6%、5%、4%、3%、2%又は1%まで変動する値を示し、好ましくはプラス又はマイナスそれぞれ15%、10%、5%、又は1%の範囲を示す。
また、GSK3β阻害剤としてCP21R7を用いる場合、添加濃度は、0.1μMを超える濃度とされ、好ましくは0.5μM以上、より好ましくは1μM以上とされる。CP21R7に関しては、長期期間分化能を維持したまま神経堤細胞を増殖させる効果は、0.5μM以上1μM以下で高いことが明らかとなっている。具体的には、CP21R7濃度0.5-1μMでは、84日(12週)以上にわたって多能性(multipotency)を維持した神経堤細胞を培養し増殖させることが可能であった。一方、0.1μMでは、培養3週(21日)において多能性を維持する細胞数の低下がみられた。
好ましいTGFβ阻害剤は、SB431542、A83-01、LDN193189、Wnt3A/BIO、BMP4、GW788388、SM16、IN-1130、GW6604及びSB505124からなる群より選択される少なくとも一つである。特に好ましいTGFβ阻害剤は、SB431542である。
また、TGFβ阻害剤の添加濃度は、添加するTGF3β阻害剤の種類によって適宜調整されるが、例えば1~50μM、好ましくは5~20μMである。
SB431542を用いる場合、添加濃度は、特に限定されないが、例えば1~40μM、好ましくは5~20μM、特には10μMとできる。
EGFの添加濃度は、特に限定されないが、例えば5~100 ng/ml、好ましくは20~40ng/mlとされる。
培養温度は、特に限定されないが、30~40℃(例えば、37℃)で行う。また、培養容器中の二酸化炭素濃度は例えば5%程度である。
この間、適宜細胞の継代が行われる。継代は、例えば播種後5~8日毎に行われる。継代間隔は、細胞凝集塊の拡大に十分な期間であって、かつ細胞凝集塊が大きくなりすぎて酸素や栄養素が細胞凝集塊内部の細胞に到達し難くなると考えられる期間よりも短い期間で行われることが好ましい。
本工程により、多能性(multipotency)を維持した神経堤細胞を培養し増殖させることが可能な期間としては、特に限定されないが、例えば、7日、14日、21日、28日、35日、42日、49日、56日、63日、70日、77日、84日、91日、98日、105日、又は112日以上となり得、35日以上が好ましく、42日以上がより好ましく、63日以上がさらに好ましく、84日以上が特に好ましく、112日以上が最も好ましい。
本発明は、上述の神経堤細胞の製造方法及び増殖方法で用いられる、神経堤細胞を含む培地をも提供する。培地の好ましい組成は上述したとおりである。
また、本発明は、上述の神経堤細胞の製造方法及び増殖方法で得られる、神経堤細胞を含む凍結ストックをも提供する。この神経堤細胞は、SOX10発現陽性かつNCCの細胞表面抗原マーカーのp75発現陽性である。
本発明に係る神経細胞、グリア細胞、間葉系間質細胞、骨細胞、軟骨細胞、角膜細胞又は色素細胞の製造方法は以下の工程を含む。これらのうち工程(i)は、本発明に係る神経堤細胞の製造方法の工程(2)あるいは本発明に係る神経堤細胞の増殖方法と同一である。
(i)GSK3β阻害剤及び塩基性線維芽細胞成長因子(bFGF)を含む培地中で神経堤細胞を浮遊培養する工程であって、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤を、該培地が含む工程、及び、
(ii)工程(i)で得られた神経堤細胞を、神経細胞、グリア細胞、間葉系間質細胞、骨細胞、軟骨細胞、角膜細胞及び色素細胞からなる群より選択される少なくとも一つの細胞に分化させる工程。
本発明に係る神経堤細胞の製造方法及び増殖方法によれば、神経細胞、グリア細胞及び間葉系間質細胞へ分化する多能性(multipotency)、あるいはこれらに加えて骨細胞、軟骨細胞、角膜細胞及び色素細胞へ分化する多能性(multipotency)を維持した神経堤細胞を得ることができる。
神経堤細胞の神経細胞、グリア細胞、間葉系間質細胞、骨細胞、軟骨細胞、角膜細胞及び色素細胞のそれぞれの細胞への分化誘導は、文献公知(例えば、非特許文献1~4)の方法に従って行うことができる。
例えば、神経堤細胞をFibronectinでコーティングしたプレートに播種し、N-2 Supplement (17502-048、Gibco)、BDNF(028-16451、和光純薬)、GDNF(074-06264、和光純薬)、NT-3(141-06643、和光純薬)、NGF(141-07601、和光純薬)を添加したDMEM/F12に交換し、37℃、5%CO2下で14日間培養する。
あるいは、神経堤細胞をプレートに播種し、10μM SB431542および1μM CHIR99021を含むCDM培地で1日間培養した後、B-27 Supplement (17504-044、Gibco)、N-2 Supplement、L-glutamine (073-05391、和光純薬)、 Penicillin/Streptomycin (15140-122、Gibco)、BDNF、GDNF、NT-3、NGFを添加したNeurobasal medium (21103-049、Gibco社)に交換し、37℃、5%CO2下で35日間培養する。
培養後、4%パラホルムアルデヒドで細胞を固定し、免疫染色法によりTUBB3タンパク質を発現する神経細胞の分化出現を確認する。
[iPSCからのNCCの分化誘導]
非特許文献1記載の方法に従ってヒトiPSCを神経堤細胞(Neural Crest Cell: NCC)に分化させた。iPSCには、非特許文献4記載のSOX10-Nano-Lantern Reporter Human iPSC(201B7株)を用いた。同細胞株は、NCCのマーカー遺伝子であるSOX10遺伝子の下流に蛍光タンパクNano-Lantern(Saito K. et al., "Luminescent proteins for high-speed single-cell and whole-body imaging." Nat. Commun., 2012; 3: 1262.)をコードする塩基配列を挿入したものであり、SOX10のプロモーターの制御下でSOX10とNano-Lanternとの融合タンパクを発現する。
NCCをディッシュから剥離し、10μM SB431542、3μM CHIR99021、40ng/ml bFGF及び40ng/ml EGFを含むCDM培地で浮遊培養した。細胞の継代は7日毎に行った。
NCCの拡大培養におけるGSK3β阻害剤、bFGF及びEGFの濃度が、NCCの自己増殖能及び分化能に及ぼす影響を検討した。以下に特に言及しない条件については、実施例1と同様にして拡大培養を行った。
NCCの拡大培養に用いたGSK3β阻害剤をCHIR99021からCP21R7に変更した以外は実施例1と同様にしてNCCの拡大培養を行った。CP21R7の濃度は、0.1, 0.5または1μMとした。
実施例1で拡大培養したNCCの神経細胞への分化能を確認した。
非特許文献4に記載の方法に基づいて神経細胞への分化誘導を行った。
30日間拡大維持培養したNCCをプレートに5×105個播種し、10μM SB431542および1μM CHIR99021を含むCDM培地で1日間培養した。1日後、B-27 Supplement (17504-044、Gibco)、N-2 Supplement (17502-048、Gibco)、L-glutamine(073-05391、和光純薬)、 Penicillin/Streptomycin (15140-122、 Gibco)、BDNF (028-16451、和光純薬)、GDNF (074-06264、和光純薬)、NT-3 (141-06643、和光純薬)、NGF (141-07601、和光純薬)を添加したNeurobasal medium (21103-049、Gibco社)に交換し、37℃、5%CO2下で35日間培養した。上記培養期間中3~4日毎に培地交換を行った。
30日間維持培養されたNCCからTUBBタンパク質を発現する神経細胞、およびGFAPタンパク質を発現するグリア細胞が分化出現しているのが確認された。
実施例1で拡大培養したNCCの神経細胞への分化能を確認した。
非特許文献1に記載の方法に基づいてメラノサイトへの分化誘導を行った。
84日間拡大維持培養したNCCをFibronectinでコーティングした6wellプレートに播種し、10μM SB431542および1μM CHIR99021を含むCDM培地で1日間培養した。1日後、BMP4およびEndothelin-3 (和光純薬)を添加したCDM培地に交換し、37℃、5%CO2下で7日間培養した。上記培養期間中2日毎に培地交換を行った。
実施例1で拡大培養したNCCの間葉系間質細胞への分化能を確認した。
非特許文献1に記載の方法に基づいて間葉系間質細胞への分化誘導を行った。
84日間拡大維持培養したNCCをFibronectinでコーティングした直径6cmの細胞培養用ディッシュに播種し、10μM SB431542および1μM CHIR99021を含むCDM培地で1日間培養した。1日後、培地をCTS StemPro MSC SFM (Gibco, A1033201) に交換した。細胞の継代はStemPro Accutase Cell Dissociation Reagent (Invitrogen社)で細胞を剥がし、1.0-2.0×106個 / dish (10cm dishの場合)の密度で播種することで行った。
実施例1で拡大培養したNCCの骨細胞、軟骨細胞または脂肪細胞への分化能を確認した。
非特許文献1に記載の方法に基づいて骨細胞、軟骨細胞または脂肪細胞への分化誘導を行った。
84日間拡大維持培養したNCCを実施例6記載の方法で間葉系間質細胞へと分化させた。間葉系間質細胞をFibronectinでコーティングした12wellプレートに4.0×104個/ wellで播種し、10%FBS、0.1μM dexa-methasone、50μg/ml ascorbic acidおよび10mM β-glycerophosphateを含むαMEMで4週間培養し、骨細胞への分化誘導を行った。培地は2-3日に1回交換した。アリザニンレッド染色により石灰化ノジュールを検出し、骨細胞への分化を確認した。
軟骨細胞のアルシアンブルー染色は、4%パラホルムアルデヒド(和光純薬)を添加して室温で30分インキュベートし固定した細胞を、1%アルシアンブルー染色液 (MUTO PURE CHEMICALS CO.)と反応させた後、水で洗浄し乾燥させることで行った。
脂肪細胞のオイルレッドO染色は、細胞を10%ホルマリンで室温で1時間固定し、Oil Red O Solution をisopropanolで0.5%に希釈したものと水を3 : 2で混合した染色液と室温で1時間反応させ、水で洗浄することで行った。油滴の観察は顕微鏡で行った。
NCCの拡大培養におけるbFGFの濃度が、NCCの自己増殖能及び分化能に及ぼす影響を検討した。以下に特に言及しない条件については、実施例1と同様にして拡大培養を行った。
GSK3β阻害剤のGSK3β阻害活性を評価するための実験系を確立した。
具体的には、LEF/TCF-bla HCT-116 Cellをアッセイ培地(OPTI-MEM, 0.5% dialyzed FBS, 0.1 mM NEAA, 1 mM Sodium Pyruvate, 100 U/mL/100 μg/mL Pen/Strep)に懸濁した(312,500 cells/mL)。細胞懸濁液をアッセイプレートの各ウェルに播種し(10,000 cells/well)、16-24時間培養した。
GSK3β阻害剤(ここでは、CHIR99021を用いた)をウェルに添加し(濃度0.316, 1.00, 3.16, 10.0, 31.6, 100, 316, 1000, 3160, 10000 nM)、5時間培養した。
beta-lactamaseの基質溶液(LiveBLAzer-FRET B/G (CCF4-AM) Substrate Mixture)を各ウェルに添加し(8 μL / well)、2時間インキュベートした。蛍光プレートリーダーで蛍光値を測定した。測定は、各濃度条件につき2つのウェルで行った。
CHIR99021以外のGSK3β阻害剤についても、本実験系により各濃度条件における蛍光値を測定し、定法にしたがって検量線を作成することで、1μMのCHIR99021が示すGSK3β阻害活性(蛍光値で113.5)と同等のGSK3β阻害活性を示す濃度を決定可能である。
Claims (21)
- 以下の工程を含む、神経堤細胞の製造方法:
(1)神経堤細胞を得る工程、
(2)GSK3β阻害剤及び塩基性線維芽細胞成長因子を含む培地中で神経堤細胞を浮遊培養する工程であって、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤を、該培地が含む工程。 - 前記培地がさらにTGFβ阻害剤を含む、請求項1記載の製造方法。
- 前記培地がCDM培地である、請求項1記載の製造方法。
- 前記培地がさらに上皮成長因子を含む、請求項1記載の製造方法。
- 前記GSK3β阻害剤がCHIR99021、CP21R7、CHIR98014、LY2090314、ケンパウロン、AR-AO144-18、TDZD-8、SB216763、BIO、TWS-119及びSB415286からなる群より選択される少なくとも一つである、請求項1記載の製造方法。
- 前記GSK3β阻害剤がCHIR99021である、請求項5記載の製造方法。
- 前記TGFβ阻害剤がSB431542、A83-01、LDN193189、Wnt3a/BIO、BMP4、GW788388、SM16、IN-1130、GW6604及びSB505124からなる群より選択される少なくとも一つである、請求項2記載の製造方法。
- 前記工程(2)において、神経堤細胞が播種後5~8日毎に継代される、請求項1記載の製造方法。
- 前記工程(1)が、幹細胞から神経堤細胞を分化誘導する工程である、請求項1記載の製造方法。
- 以下の工程を含む、神経堤細胞の増殖方法:
(I)GSK3β阻害剤及び塩基性線維芽細胞成長因子を含む培地中で神経堤細胞を浮遊培養する工程であって、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤を、該培地が含む工程。 - GSK3β阻害剤、塩基性線維芽細胞成長因子及び神経堤細胞を含む培地であって、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤を含む培地。
- さらにTGFβ阻害剤を含む、請求項11記載の培地。
- 前記培地がCDM培地である、請求項11記載の培地。
- さらに上皮成長因子を含む、請求項11記載の培地。
- 前記GSK3β阻害剤がCHIR99021、CP21R7、CHIR98014、LY2090314、ケンパウロン、AR-AO144-18、TDZD-8、SB216763、BIO、TWS-119及びSB415286からなる群より選択される少なくとも一つである、請求項11記載の培地。
- 前記GSK3β阻害剤がCHIR99021である、請求項15記載の培地。
- 前記TGFβ阻害剤がSB431542、A83-01、LDN193189、Wnt3a/BIO、BMP4、GW788388、SM16、IN-1130、GW6604及びSB505124からなる群より選択される少なくとも一つである、請求項12記載の培地。
- 請求項1の製造方法で得られた神経堤細胞を含む凍結ストック。
- 以下の工程を含む、神経細胞、グリア細胞、間葉系間質細胞、骨細胞、軟骨細胞、角膜細胞又は色素細胞の製造方法:
(i)GSK3β阻害剤及び塩基性線維芽細胞成長因子を含む培地中で神経堤細胞を浮遊培養する工程であって、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤を、該培地が含む工程、及び、
(ii)工程(i)で得られた神経堤細胞を、神経細胞、グリア細胞、間葉系間質細胞、骨細胞、軟骨細胞、角膜細胞及び色素細胞からなる群より選択される少なくとも一つの細胞に分化させる工程。 - 以下の工程を含む、多能性を有する神経堤細胞を長期間培養する方法:
(1)神経堤細胞を得る工程、
(2)GSK3β阻害剤及び塩基性線維芽細胞成長因子を含む培地中で神経堤細胞を浮遊培養する工程であって、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤を、該培地が含む工程。 - 塩基性線維芽細胞成長因子と、1μMを超える濃度のCHIR99021が示す効果と同等の効果を示す濃度のGSK3β阻害剤と、を含む培地の、多能性を有する神経堤細胞を長期間培養するための使用。
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019557317A JP7330466B2 (ja) | 2017-11-30 | 2018-11-29 | 細胞の培養方法 |
| MX2020005668A MX2020005668A (es) | 2017-11-30 | 2018-11-29 | Metodo de cultivo de celulas. |
| KR1020207017714A KR20200091885A (ko) | 2017-11-30 | 2018-11-29 | 세포의 배양 방법 |
| US16/767,753 US11959100B2 (en) | 2017-11-30 | 2018-11-29 | Method for culture of cells |
| CA3083253A CA3083253A1 (en) | 2017-11-30 | 2018-11-29 | Method for culture of cells |
| UAA202003692A UA129013C2 (uk) | 2017-11-30 | 2018-11-29 | Спосіб культивування клітин |
| CN201880077420.6A CN111492052A (zh) | 2017-11-30 | 2018-11-29 | 细胞的培养方法 |
| AU2018376391A AU2018376391B2 (en) | 2017-11-30 | 2018-11-29 | Method for culture of cells |
| SG11202004964WA SG11202004964WA (en) | 2017-11-30 | 2018-11-29 | Method for culture of cells |
| BR112020010539-2A BR112020010539A2 (pt) | 2017-11-30 | 2018-11-29 | métodos para produção e para proliferação de células da crista neural, para produção de células nervosas, células da glia, células estromais mesenquimais, células ósseas, condrócitos, células da córnea ou células pigmentares e para cultivar células da crista neural, meio, estoque congelado, e, uso de um meio |
| EA202091354A EA202091354A1 (ru) | 2017-11-30 | 2018-11-29 | Способ культивирования клеток |
| EP18883499.8A EP3719120A4 (en) | 2017-11-30 | 2018-11-29 | METHOD OF CULTIVATION OF CELLS |
| IL274746A IL274746A (en) | 2017-11-30 | 2020-05-18 | A method for cell culture |
| CONC2020/0007772A CO2020007772A2 (es) | 2017-11-30 | 2020-06-25 | Método para el cultivo de células |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-230074 | 2017-11-30 | ||
| JP2017230074 | 2017-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019107485A1 true WO2019107485A1 (ja) | 2019-06-06 |
Family
ID=66665610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2018/043949 Ceased WO2019107485A1 (ja) | 2017-11-30 | 2018-11-29 | 細胞の培養方法 |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US11959100B2 (ja) |
| EP (1) | EP3719120A4 (ja) |
| JP (2) | JP7330466B2 (ja) |
| KR (1) | KR20200091885A (ja) |
| CN (1) | CN111492052A (ja) |
| AU (1) | AU2018376391B2 (ja) |
| BR (1) | BR112020010539A2 (ja) |
| CA (1) | CA3083253A1 (ja) |
| CO (1) | CO2020007772A2 (ja) |
| EA (1) | EA202091354A1 (ja) |
| IL (1) | IL274746A (ja) |
| MX (1) | MX2020005668A (ja) |
| SG (1) | SG11202004964WA (ja) |
| TW (1) | TW201940693A (ja) |
| UA (1) | UA129013C2 (ja) |
| WO (1) | WO2019107485A1 (ja) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020040166A1 (ja) * | 2018-08-22 | 2020-02-27 | 国立大学法人京都大学 | 腸管神経前駆細胞の製造方法 |
| WO2022259721A1 (ja) * | 2021-06-10 | 2022-12-15 | 味の素株式会社 | 間葉系幹細胞の製造方法 |
| JP2022189188A (ja) * | 2021-06-10 | 2022-12-22 | 味の素株式会社 | 間葉系幹細胞の製造方法 |
| WO2023106122A1 (ja) * | 2021-12-06 | 2023-06-15 | 国立大学法人京都大学 | 間葉系譜への分化に特化した神経堤細胞の製造方法 |
| WO2023127824A1 (ja) | 2021-12-27 | 2023-07-06 | 住友ファーマ株式会社 | 神経堤細胞の培養方法及び製造方法 |
| WO2024242069A1 (ja) | 2023-05-19 | 2024-11-28 | 国立大学法人京都大学 | 神経堤細胞の製造方法 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117736990B (zh) * | 2022-09-13 | 2025-10-24 | 中国科学院动物研究所 | 一种实现细胞分化的体外培养法以及由此得到的细胞群及其用途 |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007069666A1 (ja) | 2005-12-13 | 2007-06-21 | Kyoto University | 核初期化因子 |
| US20080236610A1 (en) | 2004-04-10 | 2008-10-02 | Holger Bartels | Hair Rollers |
| WO2008118220A2 (en) | 2006-11-28 | 2008-10-02 | Veritainer Corporation | Radiation detection unit for mounting a radiation sensor to a container crane |
| WO2008124133A1 (en) | 2007-04-07 | 2008-10-16 | Whitehead Institute For Biomedical Research | Reprogramming of somatic cells |
| WO2008151058A2 (en) | 2007-05-30 | 2008-12-11 | The General Hospital Corporation | Methods of generating pluripotent cells from somatic cells |
| JP2008307007A (ja) | 2007-06-15 | 2008-12-25 | Bayer Schering Pharma Ag | 出生後のヒト組織由来未分化幹細胞から誘導したヒト多能性幹細胞 |
| US20090047263A1 (en) | 2005-12-13 | 2009-02-19 | Kyoto University | Nuclear reprogramming factor and induced pluripotent stem cells |
| WO2016104574A1 (ja) * | 2014-12-24 | 2016-06-30 | 国立大学法人京都大学 | 異所性骨化の予防・治療剤及びそのスクリーニング方法 |
| WO2016194522A1 (ja) * | 2015-06-02 | 2016-12-08 | 国立研究開発法人産業技術総合研究所 | 神経堤細胞から自律神経系の細胞への分化誘導方法 |
Family Cites Families (58)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ226750A (en) | 1987-10-29 | 1990-09-26 | Amrad Corp Ltd | Immortalisation of neural precursor cells by introducing a retrovirus vector containing a myc-oncogene |
| EP1025205A2 (en) | 1997-10-28 | 2000-08-09 | President And Fellows Of Harvard College | (in vitro) differentiation of vascular smooth muscle cells, methods and reagents related thereto |
| US20030003572A1 (en) | 1999-03-05 | 2003-01-02 | David J. Anderson | Isolation and enrichment of neural stem cells from uncultured tissue based on cell-surface marker expression |
| US6548059B1 (en) | 1999-07-22 | 2003-04-15 | The Schepens Eye Research Institute, Inc. | Promotion of proliferation of adult corneal endothelial cells |
| US20030134413A1 (en) | 2000-01-14 | 2003-07-17 | Rathjen Peter David | Cell production |
| AUPR349501A0 (en) | 2001-03-02 | 2001-03-29 | Bresagen Limited | Cellular production control |
| US20060236415A1 (en) | 2005-03-09 | 2006-10-19 | Silversides David W | Neural crest cells specific promoters; isolated neural crest cells; and methods of isolating and of using same |
| US8030072B2 (en) | 2005-03-15 | 2011-10-04 | Newcastle University | Method of isolating epidermal neural crest stem cells |
| US20070258957A1 (en) | 2006-05-04 | 2007-11-08 | Russell Bowermaster | Method for obtaining and storing multipotent stem cells |
| EP1999249B8 (en) | 2006-03-30 | 2012-02-15 | The University Court Of The University of Edinburgh | Culture medium containing kinase inhibitors. and uses thereof |
| WO2008018190A1 (en) | 2006-08-09 | 2008-02-14 | Biomaster, Inc. | Fat-derived neural crest cells |
| JP2008099662A (ja) | 2006-09-22 | 2008-05-01 | Institute Of Physical & Chemical Research | 幹細胞の培養方法 |
| US8017389B2 (en) | 2006-11-07 | 2011-09-13 | Keck Graduate Institute | Enriched stem cell and progenitor cell populations, and methods of producing and using such populations |
| WO2009155301A2 (en) | 2008-06-17 | 2009-12-23 | The Mclean Hospital Corporation | Multipotent neural cells |
| JP6093110B2 (ja) | 2008-12-17 | 2017-03-08 | ザ スクリプス リサーチ インスティテュート | 幹細胞の作製と維持 |
| CN102439135B (zh) | 2009-02-03 | 2014-04-30 | 荷兰皇家科学院 | 用于上皮干细胞和包含所述干细胞的类器官的培养基 |
| GB201111244D0 (en) | 2011-06-30 | 2011-08-17 | Konink Nl Akademie Van Wetenschappen Knaw | Culture media for stem cells |
| WO2010108008A2 (en) | 2009-03-18 | 2010-09-23 | University Of Georgia Research Foundation | Bsc cell differentiation and use in therapy |
| JP5700301B2 (ja) | 2009-06-03 | 2015-04-15 | 国立大学法人大阪大学 | 多能性幹細胞からの神経堤細胞群の分化誘導方法 |
| US20120219535A1 (en) | 2009-10-02 | 2012-08-30 | University Of Southern California | Cranial neural crest stem cells and culture condition that supports their growth |
| WO2011144901A1 (en) | 2010-05-20 | 2011-11-24 | The University Of Newcastle Upon Tyne | Expansion and directed differentiation of epidermal neural crest stem cells |
| EP2658966B1 (en) | 2010-12-31 | 2017-04-05 | University of Georgia Research Foundation, Inc. | Differentiation of human pluripotent stem cells to multipotent neural crest cells |
| JPWO2012157612A1 (ja) | 2011-05-19 | 2014-07-31 | 国立大学法人徳島大学 | 細胞分化誘導剤および分化誘導方法 |
| WO2012164137A1 (es) | 2011-05-30 | 2012-12-06 | Fundación Investigación En Regeneración Del Sistema Nervioso | Células madre y células de la estirpe neural derivadas de la glía envolvente olfatoria, y sus aplicaciones |
| WO2013051722A1 (ja) | 2011-10-06 | 2013-04-11 | 学校法人 慶應義塾 | 角膜内皮細胞の製造方法 |
| US10472607B2 (en) | 2011-12-14 | 2019-11-12 | National Chung Hsing University | Culture medium and method for inducing differentiation of pluripotent stem cells into neuroepithelial cells |
| EP2614829A1 (en) | 2012-01-11 | 2013-07-17 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | Mammalian neural plate border stem cells capable of forming neural tube and neural crest cell lineages including central and peripheral neurons |
| CN102604894B (zh) | 2012-02-29 | 2014-07-30 | 中国科学院广州生物医药与健康研究院 | 用于制备神经干细胞的培养基及其用途 |
| US10106773B2 (en) | 2012-03-01 | 2018-10-23 | University Of Miami | Isolation and use of pluripotent stem cell population from adult neural crest-derived tissues |
| KR101389851B1 (ko) | 2012-05-04 | 2014-04-29 | 이화여자대학교 산학협력단 | 신경능선줄기세포의 배양방법 및 그 용도 |
| ES2666503T3 (es) | 2012-05-16 | 2018-05-04 | Becton, Dickinson And Company | Características distintivas de superficie celular para aislar neuronas de cultivos celulares derivados de células madre pluripotentes |
| CN102952777B (zh) | 2012-11-29 | 2015-01-21 | 山东大学 | 人胚胎干细胞定向分化为角膜内皮细胞的诱导方法 |
| US20140248696A1 (en) | 2013-03-01 | 2014-09-04 | Wisconsin Alumni Research Foundation | Methods of maintaining, expanding, and diffrentiating neuronal subtype specific progenitors |
| KR101445026B1 (ko) | 2013-03-14 | 2014-09-26 | 건국대학교 산학협력단 | 낭배외피줄기세포의 신경세포로의 분화 유도 방법 |
| US10920192B2 (en) | 2013-04-23 | 2021-02-16 | Yeda Research And Development Co. Ltd. | Isolated naive pluripotent stem cells and methods of generating same |
| WO2015011031A1 (en) | 2013-07-23 | 2015-01-29 | F. Hoffmann-La Roche Ag | Small molecule based conversion of somatic cells into neural crest cells |
| AU2014321101B2 (en) | 2013-09-13 | 2020-12-03 | University Health Network | Methods and compositions for generating epicardium cells |
| US20160230143A1 (en) | 2013-09-19 | 2016-08-11 | The U.S.A., As Represented By The Secretary, Department Of Health & Human Services | Chemically defined culture medium for stem cell maintenance and differentiation |
| WO2015066197A2 (en) | 2013-10-29 | 2015-05-07 | Vestion, Inc. | Cardiac neural crest cells and methods of use thereof |
| KR101743799B1 (ko) | 2013-11-25 | 2017-06-07 | 단국대학교 천안캠퍼스 산학협력단 | 아스코르브산을 이용하여 인간 역분화 줄기세포를 신경능선 세포로 분화시키는 방법 및 상기 방법에 의해 형성된 신경능선 세포 |
| US20150218523A1 (en) | 2014-02-05 | 2015-08-06 | Agency For Science, Technology And Research | Manufacture of vascular smooth muscle cells and the use |
| JP6304818B2 (ja) | 2014-04-21 | 2018-04-04 | 花王株式会社 | 皮膚由来多能性前駆細胞の作製方法 |
| CN105154386B (zh) | 2014-05-30 | 2018-04-24 | 中国人民解放军第二军医大学东方肝胆外科医院 | 人肝细胞长期维持和增殖传代培养的专用培养基和培养方法 |
| CN108064274A (zh) | 2014-07-30 | 2018-05-22 | 耶达研究及发展有限公司 | 用于培养多能干细胞的培养基 |
| CN105441384B (zh) | 2014-09-26 | 2021-01-05 | 北京大学 | 一种制备动物和人类原始多潜能干细胞的方法,试剂盒及用途 |
| US20170327796A1 (en) | 2014-12-18 | 2017-11-16 | University Of Utah Research Foundation | Induced pluripotent stem cell and method for producing the same |
| WO2016103269A1 (en) | 2014-12-23 | 2016-06-30 | Ramot At Tel-Aviv University Ltd. | Populations of neural progenitor cells and methods of producing and using same |
| KR102121647B1 (ko) | 2015-01-15 | 2020-06-10 | 고꾸리쯔 다이가꾸 호우징 오사까 다이가꾸 | 다능성 줄기세포로부터의 각막 상피 세포의 분화 유도 방법 |
| US20180142206A1 (en) | 2015-05-05 | 2018-05-24 | The J. David Gladstone Institutes, a testamentary trust established under the Will of J. David Glads | Reversion of primed pluripotent stem cells to naive pluripotent stem cells |
| US10443043B2 (en) | 2015-05-07 | 2019-10-15 | New York University | Methods for making induced pluripotent stem cells |
| US10563171B2 (en) | 2015-06-29 | 2020-02-18 | Kyoto University | Method for inducing differentiation of pluripotent stem cells into germ cells |
| LU92771B1 (en) | 2015-07-10 | 2017-01-30 | Univ Luxembourg | Long-term self-renewing neural stem cells |
| CN105255826B (zh) | 2015-11-27 | 2019-01-08 | 中山大学 | 人iPS细胞向睾丸间质细胞的诱导分化方法及其用途 |
| WO2017099766A1 (en) | 2015-12-09 | 2017-06-15 | Intel IP Corporation | Aggregated signaling for machine type communication (mtc) devices |
| CN105483080A (zh) | 2015-12-15 | 2016-04-13 | 同济大学 | 一种大鼠胚胎干细胞高效培养基 |
| CN106244522A (zh) | 2016-08-12 | 2016-12-21 | 浙江译美生物科技有限公司 | 一种干细胞培养体系及其培养方法 |
| CN106867962B (zh) | 2017-03-28 | 2020-09-04 | 周婧 | 一种诱导神经嵴干细胞向色素细胞分化的方法 |
| CN112585262B (zh) | 2018-08-22 | 2023-10-20 | 国立大学法人京都大学 | 肠神经前体细胞的制造方法 |
-
2018
- 2018-11-29 UA UAA202003692A patent/UA129013C2/uk unknown
- 2018-11-29 JP JP2019557317A patent/JP7330466B2/ja active Active
- 2018-11-29 KR KR1020207017714A patent/KR20200091885A/ko active Pending
- 2018-11-29 MX MX2020005668A patent/MX2020005668A/es unknown
- 2018-11-29 US US16/767,753 patent/US11959100B2/en active Active
- 2018-11-29 CN CN201880077420.6A patent/CN111492052A/zh active Pending
- 2018-11-29 TW TW107142689A patent/TW201940693A/zh unknown
- 2018-11-29 EP EP18883499.8A patent/EP3719120A4/en active Pending
- 2018-11-29 WO PCT/JP2018/043949 patent/WO2019107485A1/ja not_active Ceased
- 2018-11-29 SG SG11202004964WA patent/SG11202004964WA/en unknown
- 2018-11-29 EA EA202091354A patent/EA202091354A1/ru unknown
- 2018-11-29 AU AU2018376391A patent/AU2018376391B2/en active Active
- 2018-11-29 CA CA3083253A patent/CA3083253A1/en active Pending
- 2018-11-29 BR BR112020010539-2A patent/BR112020010539A2/pt unknown
-
2020
- 2020-05-18 IL IL274746A patent/IL274746A/en unknown
- 2020-06-25 CO CONC2020/0007772A patent/CO2020007772A2/es unknown
-
2023
- 2023-04-26 JP JP2023071996A patent/JP2023093693A/ja active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080236610A1 (en) | 2004-04-10 | 2008-10-02 | Holger Bartels | Hair Rollers |
| US20090047263A1 (en) | 2005-12-13 | 2009-02-19 | Kyoto University | Nuclear reprogramming factor and induced pluripotent stem cells |
| JP2008283972A (ja) | 2005-12-13 | 2008-11-27 | Kyoto Univ | 誘導多能性幹細胞の製造方法 |
| WO2007069666A1 (ja) | 2005-12-13 | 2007-06-21 | Kyoto University | 核初期化因子 |
| WO2008118220A2 (en) | 2006-11-28 | 2008-10-02 | Veritainer Corporation | Radiation detection unit for mounting a radiation sensor to a container crane |
| WO2008124133A1 (en) | 2007-04-07 | 2008-10-16 | Whitehead Institute For Biomedical Research | Reprogramming of somatic cells |
| WO2008151058A2 (en) | 2007-05-30 | 2008-12-11 | The General Hospital Corporation | Methods of generating pluripotent cells from somatic cells |
| JP2008307007A (ja) | 2007-06-15 | 2008-12-25 | Bayer Schering Pharma Ag | 出生後のヒト組織由来未分化幹細胞から誘導したヒト多能性幹細胞 |
| WO2009006997A1 (en) | 2007-06-15 | 2009-01-15 | Izumi Bio, Inc. | Human pluripotent stem cells and their medical use |
| WO2009007852A2 (en) | 2007-06-15 | 2009-01-15 | Izumi Bio, Inc | Multipotent/pluripotent cells and methods |
| WO2009006930A1 (en) | 2007-06-15 | 2009-01-15 | Izumi Bio, Inc. | Human pluripotent stem cells induced from undifferentiated stem cells derived from a human postnatal tissue |
| WO2016104574A1 (ja) * | 2014-12-24 | 2016-06-30 | 国立大学法人京都大学 | 異所性骨化の予防・治療剤及びそのスクリーニング方法 |
| WO2016194522A1 (ja) * | 2015-06-02 | 2016-12-08 | 国立研究開発法人産業技術総合研究所 | 神経堤細胞から自律神経系の細胞への分化誘導方法 |
Non-Patent Citations (24)
| Title |
|---|
| BETTERS ET AL., DEVELOPMENTAL BIOLOGY, vol. 344, no. 2, 2010, pages 578 - 592 |
| DUPIN ET AL., DEVELOPMENTAL BIOLOGY, vol. 366, no. 1, 2012, pages 83 - 95 |
| FUKUTA M. ET AL.: "Derivation of mesenchymal stromal cells from pluripotent stem cells through a neural crest lineage using small molecule compounds with defined media", PLOS ONE, vol. 9, no. 12, 2014, pages e1122 91, XP055332980, DOI: 10.1371/journal.pone.0112291 |
| HORIKIRI T. ET AL.: "SOX10-Nano-Lantern Reporter Human iPS Cells; A Versatile Tool for Neural Crest Research", PLOS ONE, vol. 12, no. 1, 2017, pages e0170342, XP055615832, DOI: 10.1371/journal.pone.0170342 |
| HORIKIRI, T. ET AL.: "SOX10-Nano-Lantern Reporter Human iPS cells; A Versatile Tool for Neural Crest Research", PLOS ONE, vol. 12, no. 1, 20 January 2017 (2017-01-20), pages 1 - 13, XP55615832 * |
| HUANGFU D.MELTON, DA. ET AL., NATURE BIOTECHNOLOGY, vol. 26, no. 7, 2008, pages 795 - 797 |
| JIANG ET AL., DEVELOPMENT, vol. 127, no. 8, 2000, pages 1607 - 1616 |
| KEROSUO L. ET AL.: "Crestospheres: Long-Term Maintenance of Multipotent, Premigratory Neural Crest Stem Cells", STEM CELL REPORTS, vol. 5, no. 4, 2015, pages 499 - 507, XP055615836, DOI: 10.1016/j.stemcr.2015.08.017 |
| KEROSUO, L. ET AL.: "Crestospheres: Long-Term Maintenance of Multipotent, Premigratory Neural Crest Stem Cells", STEM CELL REPORTS, vol. 5, no. 4, 13 October 2015 (2015-10-13), pages 499 - 507, XP55615836 * |
| KIM JB.SCHOLER HR. ET AL., NATURE, vol. 454, 2008, pages 646 - 650 |
| MENENDEZ L. ET AL.: "Wnt signaling and a Smad pathway blockade direct the differentiation of human pluripotent stem cells to multipotent neural crest cells", PROC. NATL. ACAD. SCI., vol. 108, no. 48, 2011, pages 19240 - 5, XP055112801, DOI: 10.1073/pnas.1113746108 |
| MOTOHASHI ET AL., BIOLOGY OPEN, vol. 5, 2016, pages 311 - 322 |
| NAGOSHI ET AL., CELL STEM CELL, vol. 2, April 2008 (2008-04-01), pages 392 - 403 |
| OKITA K ET AL., NAT. METHODS, vol. 8, no. 5, May 2011 (2011-05-01), pages 409 - 12 |
| OKITA K ET AL., STEM CELLS, vol. 31, no. 3, pages 458 - 66 |
| OKITA, K.ICHISAKA, T.YAMANAKA, S., NATURE, vol. 451, 2007, pages 141 - 146 |
| PATSCH ET AL., NATURE CELL BIOLOGY, vol. 17, no. 8, 2015, pages 994 - 1003 |
| PFALTZGRAFF ET AL., JOURNAL OF VISUALIZED EXPERIMENTS, vol. 64, 2012, pages 4134 |
| SAITO K. ET AL.: "Luminescent proteins for high-speed single-cell and whole-body imaging", NAT. COMMUN., vol. 3, 2012, pages 1262, XP055534182, DOI: 10.1038/ncomms2248 |
| SHI Y.DING S. ET AL., CELL STEM CELL, vol. 3, no. 5, 2008, pages 568 - 574 |
| TAKAHASHI KYAMANAKA S. ET AL., CELL, vol. 131, 2007, pages 861 - 872 |
| TAKAHASHI KYAMANAKA S., CELL, vol. 126, 2006, pages 663 - 676 |
| UNO ET AL., BRAIN RES., vol. 1296, 2009, pages 148 - 163 |
| YU J.THOMSON JA. ET AL., SCIENCE, vol. 318, 2007, pages 1917 - 1920 |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020040166A1 (ja) * | 2018-08-22 | 2020-02-27 | 国立大学法人京都大学 | 腸管神経前駆細胞の製造方法 |
| US12516288B2 (en) | 2018-08-22 | 2026-01-06 | Kyoto University | Method for producing enteric neural precursors |
| WO2022259721A1 (ja) * | 2021-06-10 | 2022-12-15 | 味の素株式会社 | 間葉系幹細胞の製造方法 |
| JP2022189188A (ja) * | 2021-06-10 | 2022-12-22 | 味の素株式会社 | 間葉系幹細胞の製造方法 |
| JP7799153B2 (ja) | 2021-06-10 | 2026-01-15 | 国立大学法人京都大学 | 間葉系幹細胞の製造方法 |
| WO2023106122A1 (ja) * | 2021-12-06 | 2023-06-15 | 国立大学法人京都大学 | 間葉系譜への分化に特化した神経堤細胞の製造方法 |
| WO2023127824A1 (ja) | 2021-12-27 | 2023-07-06 | 住友ファーマ株式会社 | 神経堤細胞の培養方法及び製造方法 |
| KR20240125943A (ko) | 2021-12-27 | 2024-08-20 | 스미토모 파마 가부시키가이샤 | 신경능 세포의 배양 방법 및 제조 방법 |
| WO2024242069A1 (ja) | 2023-05-19 | 2024-11-28 | 国立大学法人京都大学 | 神経堤細胞の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| IL274746A (en) | 2020-07-30 |
| SG11202004964WA (en) | 2020-06-29 |
| UA129013C2 (uk) | 2024-12-25 |
| BR112020010539A2 (pt) | 2020-11-17 |
| CA3083253A1 (en) | 2019-06-06 |
| EA202091354A1 (ru) | 2020-08-20 |
| TW201940693A (zh) | 2019-10-16 |
| MX2020005668A (es) | 2020-11-24 |
| EP3719120A1 (en) | 2020-10-07 |
| AU2018376391A1 (en) | 2020-06-04 |
| JPWO2019107485A1 (ja) | 2020-11-26 |
| KR20200091885A (ko) | 2020-07-31 |
| JP7330466B2 (ja) | 2023-08-22 |
| JP2023093693A (ja) | 2023-07-04 |
| AU2018376391B2 (en) | 2024-09-12 |
| EP3719120A4 (en) | 2021-08-11 |
| CN111492052A (zh) | 2020-08-04 |
| US20210002608A1 (en) | 2021-01-07 |
| CO2020007772A2 (es) | 2020-08-31 |
| US11959100B2 (en) | 2024-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7330466B2 (ja) | 細胞の培養方法 | |
| JP6678107B2 (ja) | 膵前駆細胞の増殖方法 | |
| EP3882342A1 (en) | Method for producing brain organoids | |
| CN112585262B (zh) | 肠神经前体细胞的制造方法 | |
| US20250032551A1 (en) | Method for producing neural crest cells specialized for differentiation into mesenchymal lineage | |
| JPWO2017188458A1 (ja) | 骨格筋前駆細胞及び骨格筋細胞の製造方法 | |
| JP7541700B2 (ja) | 腎間質細胞の製造方法 | |
| JP7437766B2 (ja) | 中内胚葉系への分化抵抗性が解除された多能性幹細胞の作製方法 | |
| JP2024531682A (ja) | コミットされた心臓始原細胞の製造方法 | |
| HK40029689A (en) | Method for culture of cells | |
| EA044339B1 (ru) | Способ культивирования клеток | |
| JPWO2020130147A1 (ja) | ルブリシン局在軟骨様組織、その製造方法及びそれを含む関節軟骨損傷治療用組成物 | |
| WO2026105763A1 (ja) | 後脳神経幹細胞の製造方法及び拡大培養方法、培地、細胞、凍結ストック | |
| JP2020115771A (ja) | 多能性幹細胞から軟骨組織を製造する方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18883499 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 3083253 Country of ref document: CA |
|
| ENP | Entry into the national phase |
Ref document number: 2019557317 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2018376391 Country of ref document: AU Date of ref document: 20181129 Kind code of ref document: A |
|
| ENP | Entry into the national phase |
Ref document number: 20207017714 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: DZP2020000340 Country of ref document: DZ |
|
| WWE | Wipo information: entry into national phase |
Ref document number: NC2020/0007772 Country of ref document: CO |
|
| ENP | Entry into the national phase |
Ref document number: 2018883499 Country of ref document: EP Effective date: 20200630 |
|
| WWP | Wipo information: published in national office |
Ref document number: NC2020/0007772 Country of ref document: CO |
|
| REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112020010539 Country of ref document: BR |
|
| ENP | Entry into the national phase |
Ref document number: 112020010539 Country of ref document: BR Kind code of ref document: A2 Effective date: 20200526 |
|
| WWR | Wipo information: refused in national office |
Ref document number: NC2020/0007772 Country of ref document: CO |
|
| WWW | Wipo information: withdrawn in national office |
Ref document number: 274746 Country of ref document: IL |
