WO2007132949A1 - タンパク質の高分泌生産方法 - Google Patents
タンパク質の高分泌生産方法 Download PDFInfo
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- WO2007132949A1 WO2007132949A1 PCT/JP2007/060478 JP2007060478W WO2007132949A1 WO 2007132949 A1 WO2007132949 A1 WO 2007132949A1 JP 2007060478 W JP2007060478 W JP 2007060478W WO 2007132949 A1 WO2007132949 A1 WO 2007132949A1
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- C—CHEMISTRY; METALLURGY
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- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
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- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2875—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the NGF/TNF superfamily, e.g. CD70, CD95L, CD153, CD154
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- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
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- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P21/00—Preparation of peptides or proteins
- C12P21/02—Preparation of peptides or proteins having a known sequence of two or more amino acids, e.g. glutathione
Definitions
- the present invention relates to a method for producing highly secreted protein mainly in yeast.
- E. coli can produce the target protein at low cost, but it cannot produce modifications such as glycosylation, and it is produced as an inactivated protein in the inclusion body. Therefore, a solubilization process is required and it is not suitable for the production of complex proteins.
- Animal cells can produce the target protein as an activated protein, but they require time for cell breeding and culture, and are inevitably produced at a very high cost, including equipment and material costs.
- antibodies have long been used as pharmaceuticals, but since they originated from sources other than humans, antibodies against the administered antibodies themselves were produced and could not be administered multiple times. Has been limited.
- human-type antibodies in which amino acid sequences other than the antigen-binding site are replaced with human antibody-derived sequences have been produced, and human antibody-producing mice in which human antibody genes have been introduced into mice have been created.
- these antibodies are produced by cultured cells such as hybridoma and CH0 cells into which a gene encoding the antibody is introduced, but there are many problems in terms of cost, productivity, and safety.
- ScFv production can be achieved by co-expressing part of a molecular chaperone group that helps to form a three-dimensional protein structure on the endoplasmic reticulum such as BiP (KAR2) / PDI.
- a molecular chaperone group that helps to form a three-dimensional protein structure on the endoplasmic reticulum such as BiP (KAR2) / PDI.
- causes of endoplasmic reticulum stress include impaired modification (addition of sugar chains and disulfide bonds) occurring in the endoplasmic reticulum, and decreased transport from the endoplasmic reticulum.
- Mammalian cells are the means to combat this endoplasmic reticulum stress
- URR Unfold Protein Response
- the genes that regulate this UPR are IREl a -XBPl, PERK-elF-2 ⁇ ,
- ATF6 system is known.
- yeast only the Irelp-Haclp system is known to exist, and Irelp-Haclp is involved in UPR by the following mechanism (see Fig. 1).
- Irelp is usually bound to BiP (antibody heavy chain binding protein), but —If a 'fold protein (UFP) is generated, BiP binds to this UFP.
- UFP body heavy chain binding protein
- Irelp dissociated from BiP is activated by autophosphorylation and dimerization, and exhibits endonuclease activity.
- the HAC1 gene is usually in an inactivated state, but Irelp having endonuclease activity splices mRNA transcribed from the HAC1 gene to generate active Haclp (Cell. 87: 405-413). (1996), Cell. 90: 1031-1039 (1997), The EMBO Jounrnal. 18: 3119-3132 (1999)) 0
- This active Haclp translocates to the nucleus and acts as a transcription factor. Promotes expression of genes encoding various proteins related to reactions, related glycosylation, protein folding, ER-associated degradation (ERAD), protein sorting, lipid metabolism, etc. (Cell. 101: 249) -258 (2000)).
- the gene encoding the activated Haclp of the filamentous fungus Trichoderma reesei was introduced into S. cerevisiae, ⁇ -amylase, which is a heterologous protein, and endogenous There is an example in which secretion of invertase, a protein, is improved (Appl. Environ. Microbiol. 69: 065-2072 (2003)).
- ⁇ -amylase zymbertase which is a single protein, is originally known as a protein that is easily secreted, and its production amount is only improved by about 2 times.
- BPTI Bovine pancreatic trypsin inhibitor
- the RRBP1 gene was originally isolated from Inu as a gene encoding a protein that binds to the ribosome (Nature. 346: 540-544 (1990)).
- 0 RRBP1 has a molecular weight of 180 kDa and a 10-amino acid residue at the N-terminus. Has a unique structure that repeats 54 times, and this region binds to the ribosome.
- RRBP1 is known to be involved in membrane structure increase and mRNA stabilization (The Journal of Cell Biology. 130: 29-39 (1995), The Journal of Cell
- BPTI BPTI
- molecular weight 6500. It is a very small peptide, and is generally not applicable to other high molecular weight proteins, and also to aggregate proteins of different proteins such as light chains and heavy chains such as antibodies.
- PMT Protein O-raannosyltransferase gene
- This PMT gene product is localized in the ER membrane, and has an activity to add mannose to the hydroxylated residues of the secreted proteins serine (Ser) and threonine (Thr) (hereinafter referred to as PMT activity).
- PMT activity Some of the proteins glycosylated with PMT are the main components of the cell wall of yeast as mannoproteins. When PMT activity is extremely reduced, the cell wall is weakened and affects the growth of the cell itself. Is known to give.
- PMT remains, and Saccharomyces cerevisiae (S. cerevisiae) has been confirmed to have seven genes PMTl, 2, 3, 4, 5, 6, 7 (Biochim. Biophys. Acta., 1426: 297-307 (1999)).
- PMT genes are classified into three types: PMTl family, PMT2 family, and PMT4 family.
- PMTlp and PMT2p form heterodimers, and PMT4p forms homodimers and expresses activity.
- PMT5p complements PMTlp and PMT3p complements PMT2p due to homology of amino acid sequences.
- PMT6p is highly homologous to PMT2p and PMT3p, but it is not known what type of complex expresses the activity.
- each PMT protein is known to have selectivity for the substrate protein.
- Candida albicans has 5 genes (Mol. Microbiol., 55: 546-560 (2005)) that are highly homologous to PMTl, 2, 4, 5, 6 genes of S. cerevisiae. )
- S. cerevisiae PMT4 gene is highly homologous (Eukaryot. Cell, 6: 222-234 (2007))
- Schizosaccharomyces pombe of fission yeast the PMT1, 2, 4 gene 3 genes (omal, 2, 4) have been found (Mol. Microbiol., 57: 156-170 (2005)).
- 0 gataea minuta (0. minuta)
- the presence of 5 genes having high homology with S. cerevisiae PMTl, 2, 4, 5, 6 genes was confirmed.
- the PMT gene has also been found in mold. Aspergillus lus nidulans has high homology with PmtA gene and 2 other genes, and Trichoderma reesei has high homology with S. cerevisiae PMT2 gene
- PMT activity acts on the hydrophobic region of the peptide, increasing the hydrophilicity of the peptide and increasing the peptide in the ER lumen. It is said to have an effect of suppressing the aggregation of peptide.
- PMT activity sometimes adds unnecessary type 0 sugar chains, which can cause protein complex formation failure and decreased activity.
- multimeric proteins such as antibodies, there is a possibility of inhibiting the formation of aggregates (in the case of antibodies, the formation of aggregates of light and heavy chains).
- Patent No. 3 6 3 0 4 2 4 and Tokuhei Hei 8 _ 5 0 9 8 6 7 propose a method for producing a recombinant protein by inhibiting 0-type glycosylation by PMT gene modification. There is no description of light chain / heavy chain association formation.
- the HAC1 gene induces UPR, but it is known that the PMT gene that adds a type 0 sugar chain peculiar to yeast is also present in the gene group induced by UPR (Cell. 101: 249). -258 (2000)). Therefore, it is considered that high-quality, high-quality multimeric proteins such as antibodies cannot be produced simply by introducing the HAC1 gene.
- an object of the present invention is to provide a means for producing a high secretion of a protein, particularly a protein having a complex structure such as an antibody, in a host cell such as yeast. Disclosure of the invention
- HAC1 a gene involved in high-secretory production of proteins in the methanol-utilizing yeast Ogataea minuta, during endoplasmic reticulum stress.
- Irelp By co-expressing Irelp, the mRNA is spliced and induced by the transcription factor Hacl protein) gene and RRBP1 (ribosome-binding protein 1, ribosome receptor, pl80 protein) gene. It was found that it can be improved nearly 10 times.
- HAC1 0-mannosyltransferase
- the present invention has been completed based on such findings (see FIG. 2).
- the present invention includes the following inventions.
- a transformed host cell having active HAC1 gene and RRBP1 gene having active HAC1 gene and RRBP1 gene.
- Active HAC1 gene selected from (a) to (d) below:
- HAC1 gene selected from the following (i) to (1):
- RRBP1 gene selected from (e) to (h) below: (e) Gene encoding RRBP 1 derived from human or nu
- a protein that hybridizes under stringent conditions with a gene comprising the nucleotide sequence of the RRBP 1 gene derived from human or nu or derived from the nucleotide sequence complementary thereto and having a liposome-binding activity is coded.
- a method for producing a protein comprising culturing the transformed host cell according to any one of [9] to [12] in a medium, and collecting a target protein from the culture.
- the expression vector according to [20] which is a gene encoding an active HAC1 protein of Naka, Saccharomyces cerevisiae, Trichoderraa reesei ⁇ or f Aspergillus nidulans, or a homologous gene thereof.
- a method for producing a transformed host cell comprising the following steps.
- HAC1 protein amino acid sequence consisting of an amino acid sequence with one or several amino acids deleted, substituted, and Z or added, and A gene encoding a protein having a function of activating UPR
- transformant cells into which the active HAC1 gene and / or RRBP1 gene and a gene encoding an exogenous protein have been introduced are cultured in a medium, and the target is obtained from the culture.
- a method for producing a protein comprising collecting the protein.
- [4 2] The method for producing a protein according to [41], wherein the inhibition of type 0 sugar chain synthesis is carried out by disrupting the PMT gene.
- [4 3] The method for producing a protein according to [4 1], wherein the inhibition of type 0 sugar chain synthesis is performed by adding a PMT activity inhibitor to the medium.
- PMT activity inhibitor is 5-[[3,4--phenylraethoxy) phenyl] methylene] -4-oxo-2-thioxo-3-thiazolidmeacetic acid or ⁇ (5Z) -4_oxo-5- [3_ (1 phenyiethoxy) -4- (2-phenylethoxy) benzy ⁇ idene] — 2_thioxo-l, 3-thiazolidin-3-yl ⁇ acetic acid, [4 3] or [4 4] .
- FIG. 1 is a diagram showing the method for obtaining the 0. minuta active HAC1 gene and the structure thereof.
- FIG. 2 shows an overview of the technical content of this book.
- Figure 3 shows the structure of 0. minuta active HAC1 gene expression vector (pOMexPGHy / Hacl), human RRBP1 gene expression vector (pOMexGPlA / pl80), and human antibody gene expression vector (pOMexGAT-G / Ab).
- FIG. 1 shows the structure of 0. minuta active HAC1 gene expression vector (pOMexPGHy / Hacl), human RRBP1 gene expression vector (pOMexGPlA / pl80), and human antibody gene expression vector (pOMexGAT-G / Ab).
- FIG. 4 shows the results of Western analysis of antibodies secreted into the culture supernatant of an antibody-producing yeast strain into which 0. minuta active HAC1 gene and human RRBP1 gene were introduced.
- FIG. 5 is a graph showing the measurement results of antibody secretion of antibody-producing yeast strains into which 0. minuta active HAC1 gene and human RRBP1 gene were introduced.
- Fig. 6 shows the Westin solution of the antibody secreted in the culture supernatant of an antibody-producing yeast strain into which 0. minuta active HAC1 gene and human RRBP1 gene were introduced. It is the figure which showed the analysis result.
- HAC1 expression vector (YE P 351GAP - II-aHACl ), human RRBPl gene expression vector (YEp351GAP- II - pl80), the human antibody gene expression vectors (YEp352 GAP -
- FIG. 8A shows the introduction of S. cerevisiae active HAC1 gene and human RRBP1 gene expression vector.
- 2 is a graph comparing the antibody secretory production ability of the antibody-producing yeast strains.
- Fig. 8B is a graph comparing the antibody secretory production ability of antibody-producing yeast strains into which S. cerevisiae active HAC1 gene and human RRBP1 gene expression vectors were introduced under the condition that type 0 sugar chain formation was suppressed. .
- Fig. 8C compares the antibody secretion production capacity (absolute value) of antibody-producing yeast strains into which S. cerevisiae active HAC1 gene and human RRBP1 gene expression vector were introduced, with and without PMT inhibitor. It is a graph.
- FIG. 9 shows the results of Western analysis of antibody production in an antibody production strain into which a synthetic antibody gene having a codon changed was introduced.
- FIG. 10 shows the results of Western analysis of the culture supernatant of each yeast-derived activated HAC1 gene-introduced antibody-producing strain.
- FIG. 11 shows the amount of secretory antibody produced by each yeast-derived activated HAC1 gene-introduced antibody-producing strain.
- Fig. 12 shows the results of Western analysis of the culture supernatants of the PMT1 gene or PMT2 gene fragmented antibody producing strain and the activated HAC1 gene-introduced antibody producing strain.
- FIG. 13 is a diagram showing the production amounts of secreted antibodies of the PMT1 gene or PMT2 gene-spun antibody producing strain and the activated HAC1 gene-introduced antibody producing strain.
- Fig. 14 shows the results of Western analysis of culture supernatants of the PMT4 gene-spun antibody producing strain and the activated HAC1 gene-introduced antibody producing strain.
- FIG. 15 is a graph showing the production of secretory antibodies in the PMT4 gene-spanning antibody producing strain and the activated HAC1 gene-introducing antibody producing strain.
- FIG. 16A shows the results of Western analysis of the culture supernatant of the PMT5 gene or PMT6 gene disruption antibody producing strain.
- Fig. 16B shows the amount of secretory antibody produced by the PMT5 gene or PMT6 gene disruption antibody-producing strain.
- Fig. 17 shows the results of Western analysis of the culture supernatant of an antibody-producing strain that has been disrupted by the PMT2 gene or PMT4 gene and introduced with an activated HAC1 gene and added with a PMT inhibitor (lc). It is.
- Figure 18 A shows an antibody-producing strain into which PMT2 gene has been disrupted and activated HAC1 gene has been introduced.
- FIG. 8B shows the amount of secretory antibody produced in the culture supernatant of the PMT4 gene disrupted and activated HAC1 gene introduced and cultured with PMT inhibitor (1c) added .
- FIG. 19 shows the results of Western analysis of culture supernatants cultured with various PMT inhibitors (rhodanine-3_acetic acid derivatives) added.
- FIG. 20 shows the amount of secretory antibody produced by the culture supernatant cultured with various PMT inhibitors (mouth danin-3-acetic acid derivatives) added.
- PMT inhibitors mouth danin-3-acetic acid derivatives
- a gene used for high protein secretion production an expression vector containing the gene, a transformed host cell into which the expression vector has been introduced, and a method for producing a protein using the transformed host cell.
- HAC1 gene one of the genes used for high protein production is the HAC1 gene.
- the HAC1 gene exists as an inactive HAC1 gene on the genome, but the mRNA transcribed by the HAC1 gene during ER stress is spliced by Irelp and encodes the transcription factor HAC1 protein (Haclp).
- Haclp which is converted to mRNA and translated, activates Unfolded Protein Response (UPR).
- an active HAC1 gene is defined as a cDNA (complementary to mRNA) that encodes a HAC1 protein (Haclp).
- an active HAC1 gene it is preferable to use an active HAC1 gene, but a certain degree of effect can also be obtained by introducing an inactive HAC1 gene.
- HAC1 p The active HAC1 gene encoding Haclp that actually functions UPR is described below.
- HAC1 p is composed of an unknown active region newly added from the N-terminus, a highly conserved DNA binding domain, leucine zipper region, and IRNAp on the C-terminal side.
- the active HAC1 gene used in the present invention is not particularly limited as long as it is a gene encoding an active HAC1 protein.
- SEQ ID NO: derived from Ogataea minuta (0. minuta) newly obtained in the present invention SEQ ID NO: derived from Ogataea minuta (0. minuta) newly obtained in the present invention.
- the homologous DNA includes a protein having an amino acid sequence having at least 70% homology with the amino acid sequence shown in SEQ ID NO: 23 or 70 and having a function of activating Unfolded Protein Response (UPR).
- UPR Unfolded Protein Response
- a gene encoding a protein having a function a protein having a function of hybridizing with a DNA comprising the nucleotide sequence shown in SEQ ID NO: 22 or SEQ ID NO: 69 or a complementary nucleotide sequence thereof under stringent conditions and activating UPR The gene encoding is included.
- amino acid sequence having at least 70% homology with the amino acid sequence shown in SEQ ID NO: 23 or 70 is preferably 80% or more, more preferably 90% or more, most preferably 95% or more. It is an amino acid sequence having the homology of A protein homology search can be performed using programs such as F A S T A and B L A S T for the DNA Databank of JAPAN (DDBJ), for example.
- the number of “several” in the above-mentioned “one or several amino acids in the amino acid sequence shown in SEQ ID NO: 23 or 70” is not particularly limited, but the number is not particularly limited. It means 20 or less, preferably 10 or less, more preferably 7 or less, and still more preferably 5 or less.
- stringent condition refers to a condition in which a so-called specific hybrid is formed and a non-specific hybrid is not formed.
- DNA having high homology that is, at least 80% or more, preferably the base sequence shown in SEQ ID NO: 22 or SEQ ID NO: 69,
- a DNA sequence comprising a base sequence having a homology of Examples include conditions in which a complementary strand of DNA that is hybridized and less homologous does not hyper-hydidize. More specifically, it means a condition in which the sodium concentration is 150 to 900 mM, preferably 600 to 900 mM, and the temperature is 60 to 68 ° C, preferably 65 ° C.
- the above mutation can be introduced by a technique known in the art such as the Kunkel method or the Gapped duplex method, or a similar method, for example, site-specific sudden Mutation-introducing kits using the mutagenesis method (for example, Mutant-K (Takara Paio) or Mutant-G (Takara Bio)), Takara Bio's LA PCR in vitro Mutagenesis series kit, etc. can be used.
- a technique known in the art such as the Kunkel method or the Gapped duplex method, or a similar method, for example, site-specific sudden Mutation-introducing kits using the mutagenesis method (for example, Mutant-K (Takara Paio) or Mutant-G (Takara Bio)), Takara Bio's LA PCR in vitro Mutagenesis series kit, etc.
- the mutagenesis method for example, Mutant-K (Takara Paio) or Mutant-G (Takara Bio)
- function to activate UPR refers to the endoplasmic reticulum (ER series of defense responses against unfolded protein accumulation (for example, transcriptional repression, folding promotion by induction of molecular chaperone, degradation of denatured protein, apoptosis) Cell death, etc.)
- “Having a function of activating UPR” means that the function is substantially equivalent to the function of the gene encoding the protein consisting of the amino acid sequence shown in SEQ ID NO: 23 or 70. Say.
- the active HAC1 gene may be a methanol-utilizing yeast other than 0. minuta and P. pastoris. For example, it encodes active HAC1 protein derived from Hansenulla polymorpha (Pichia angusta), Pichia methanolica, and Candida boidinii. Gene. Further, it may be an active HAC1 gene derived from other species such as other yeasts and molds. For example, a gene encoding an active HAC1 protein from Saccharomyces cerevisiae (S.
- S. cerevisiae The base sequences of the genes encoding active HAC1 protein derived from S. cerevisiae, Tricho erraa reesei, and Aspergillus nidulans from the above d are shown in SEQ ID NOs: 39, 41, and 43, and the corresponding amino acid sequences are also shown. They are shown in SEQ ID NOs: 40, 42, and 44, respectively.
- the isolated active HAC1 gene derived from Ogataea minuta and Pichia pastoris was isolated for the first time in yeasts other than Saccharomyces cerevisiae. This strongly suggests the presence of the same gene in all yeasts, for example, methanol-utilizing yeasts in general. Therefore, these genes are also included in the active HAC1 gene used in the present invention.
- any transcription factor that activates UPR can be used in place of the above-mentioned activated HAC1 gene.
- XBP-1 gene which is a HAC1 homolog derived from animal cells or other species, can be used. Examples include a gene in which a child (a gene derived from human is described in GENBANK registration number: _005080) is spliced and activated by Irelp.
- XBP-1 a gene derived from human is described in GENBANK registration number: _005080
- the artificial activation of Irel accompanied by the activation of HAC1 (XBP-1) also corresponds to the activation of the UPR, it is considered to be equivalent to the introduction of the activated HAC1 gene.
- forcibly expressing the HAC1 gene itself that is not activated may have the same effect as the introduction of active HAC1 as described above.
- the active HAC1 gene can be obtained by any method as long as UPR is induced.
- mRNA is obtained from cells that are highly expressed in genes encoding proteins that are difficult to fold, sugar chain modification inhibitors such as tunicamycin, cells treated with redox agents such as DTT and hydrogen peroxide, and UPR inducers. This can be obtained by synthesizing cDNA. Moreover, it can also be obtained by synthesizing a part or the full length of the sequence already disclosed using a DNA synthesizer.
- RRBP1 gene another gene used for high protein secretion production includes RRBP1 gene.
- the RRBP1 gene encodes a protein called ribosome-binding protein 1 and is also called the hES, ES130, ES / 130, or DKFZp586A1420 gene.
- the mammalian RRBP1 gene consists of an N-terminal transmembrane region, followed by a region rich in basic amino acids, 54 rebeat regions composed of 10 amino acid residues, and a C-terminal region.
- the RRBP1 gene used in the present invention is not particularly limited as long as it is a gene encoding ribosome binding protein 1.
- RRBP1 gene derived from human encoding KIAA1398 protein, GENBANK registration number: AB037 8 19
- the RRBP1 gene derived from Inu gene derived from Inu (genobank registration number: X87224 encoding the ribosome receptor pl80).
- the homologous gene may be sufficient.
- the nucleotide sequences of human-derived RRBP1 gene and Inu-derived RRBP1 gene are respectively shown in SEQ ID NOs: 4 5 and 4 7, and the corresponding amino acid sequences.
- the columns are shown in SEQ ID NOs: 4 6 and 4 8 respectively.
- homologous gene for example, a gene encoding a protein consisting of an amino acid sequence having at least 70% homology with human-derived or Inu-derived RRBP 1 amino acid sequence and having a ribosome binding activity
- a protein comprising a ribosome binding activity consisting of an amino acid sequence in which one or several amino acids are deleted, substituted, and Z or added in the amino acid sequence of RRBP 1 derived from human or inu
- Gene Gene Gene is included. The degree of homology, stringent conditions, and the method for mutagenesis are the same as described above.
- homologous gene examples include, for example, mouse (Accession No. XM-I 622097, XM_91338, XM_991888), rat (Accession No. XM—230637), african megael (Xenopus) (Accession No. NM—001005671), An example is the RRBP 1 gene derived from zebra fish (Danio) (Accession No. NM_199431).
- the RRBP 1 gene can also be obtained by a known general method. For example, it can be obtained by preparing mRNA from cells expressing the RRBP 1 gene and then synthesizing cDNA.
- target genes are prepared by preparing mRNA and reversing It can be obtained by a general method of synthesizing cDNA with a transcriptase.
- a cDNA library derived from a cell or tissue expressing the target gene is isolated by screening using a DNA probe synthesized based on the gene fragment. can do.
- Preparation of m RNA can be carried out by methods used Oite normally art.
- RNA oligo (dT) cellulose strength ramya Sepharose 2B is used as a carrier with poly U-Sepharose or the like
- Poly (A) + RNA (mRNA) is obtained by the fifty column method or by the batch method.
- poly (A +) RNA may be further fractionated by sucrose density gradient centrifugation or the like.
- single-stranded cDNA is synthesized using an oligo dT primer and reverse transcriptase, and then synthesized from the single-stranded cDNA using DNA synthase I, DNA ligase, RnaseH, or the like. Synthesize double-stranded cDNA.
- Composition After smoothing the double-stranded cDNA with T4DNA synthase, ligation of adapter (for example, EcoRI adapter), phosphorylation, etc.; L gtll etc .; Create a library.
- a cDNA library can be prepared using a plasmid vector. Thereafter, a strain (positive clone) having the desired DNA may be selected from the cDNA library.
- genomic DNA is extracted from the cell line of the source organism, and the target gene is selected. Extraction of genomic DNA is performed, for example, according to the method of Cryer et al. (Methods in Cell Biology, 12, 39-44 (1975)) and the method of P. Philippsen et al. (Methods Enzymol., 194, 169-182 (1991)) be able to.
- the collection source is yeast
- prepare protoplasts of yeast and use the commonly known DNA extraction method, alcohol precipitation method after removal of cell residues under high salt concentration, phenol or chloroform.
- a conventional method such as an alcohol precipitation method after extraction may be used.
- the target gene can also be obtained, for example, by PCR (PCR Technology. Henry A. Erlich, Atockton press (1989)).
- PCR PCR Technology. Henry A. Erlich, Atockton press (1989)
- genomic DNA is used as a cage.
- a gene library is prepared by a conventional method
- a desired clone is selected from the prepared gene library, and the clone is amplified.
- a chromosomal DNA obtained from an organism cell line as a collection source is fragmented by partial digestion with an appropriate restriction enzyme, and the resulting fragment is ligated to an appropriate vector. It can be prepared by introducing the vector into a suitable host. It can also be prepared by extracting mRNA from cells, synthesizing cDNA therefrom, ligating it to an appropriate vector, and introducing the vector into an appropriate host.
- a plasmid known as a vector for preparing a commonly known gene library can be used, and a phage vector or cosmid can also be widely used.
- a host for transformation or transduction a host corresponding to the type of the vector may be used. Selection of clones that retain the target gene fragments can be done by colony hybridization using the labeled probe containing the sequence specific to the target gene from the above gene library, plaque 'hybridization method, etc. Do.
- the target gene can be synthesized chemically. For example, two pairs of complementary oligonucleotides can be produced and annealed, several annealed DNAs can be ligated with DNA ligase, or several partially complementary oligonucleotides can be produced.
- the gene can be synthesized by a method such as filling the gap by PCR.
- Determination of the DNA sequence of a gene can be performed by a conventional method, for example, the dideoxy method (Sanger et al., Proc. Natl. Acad. Sci., USA, 74, 5463-5467 (1977)). Furthermore, the above DNA base sequence can be easily determined by using a commercially available sequence kit or the like.
- the vector of the present invention provides a vector containing the active HAC1 gene and the RRBP1 gene alone, or a vector containing both the active HAC1 gene and the RRBP1 gene.
- each vector may be transformed with each gene alone, or one vector containing both genes may be used. It may be transformed.
- the expression vector may contain a gene encoding a foreign protein.
- an expression vector containing a gene encoding a foreign protein may be prepared separately, and if prepared separately, each vector is cotransfected (co-introduced) into the host cell.
- the gene encoding the foreign protein is not particularly limited.
- various enzyme genes such as ⁇ -amylase gene and ⁇ -galactosidase gene, and interferon and interferon ⁇ , which are pharmaceutically useful physiologically active proteins.
- Various interferon genes such as IL1, IL2, various interleukin genes, erythropoietin (EP0) gene, granulocyte colony-stimulating factor (G-CSF) gene and other site force-in genes, growth factor genes, etc.
- E0 erythropoietin
- G-CSF granulocyte colony-stimulating factor
- the present invention is particularly effective for proteins having high hydrophobicity and proteins that are difficult to produce secretively, such as forming a complex.
- a heteromultimer that is an antibody or a functional fragment thereof is included.
- An expression vector may be constructed as a protein expression unit by appropriately adding an expression control region to the active HAC1 gene, RRBP1 gene, and a gene encoding a foreign protein.
- the protein expression unit has at least a promoter region, the above gene, and a transcription terminator region in the direction of the transcription reading frame.
- One promoter that can be used here may be an inducible expression promoter or a constitutive expression promoter. Examples of inducible expression promoters include alcohol oxidase (A0X) gene promoter, dihydroxyaceton synthase (DAS) gene promoter, formate dehydrogenase (FDH) gene promoter, etc. involved in methanol metabolism in methanol-assimilating yeast. It is done.
- CUP copper inducible promoters and the like can also be used.
- Constitutive expression promoters include, for example, dalyceraldehyde-3-phosphate dehydrogenase (TDH, GAP) gene, phosphoglyce mouth kinase (PGK) gene, triose phosphate isomerase (TPI) gene, enolase (EN0) gene, actin (ACT ) Promoter, cytochrome c (CYC) gene, trehalose synthase (TPS) gene, alcohol dehydrogenase (ADH) gene, and the like.
- the transcription terminator may be a sequence having an activity that causes transcription termination with respect to transcription from the promoter, and may be of the same or different gene as the promoter gene.
- heteromultimers are susceptible to the above-mentioned effects.Particularly, molecules such as antibodies are heavy tetramers and heterotetramers in which two light chains are associated. The degree of expression is an important factor for association. If the expression of the active HAC1 gene is too strong, Since the cells are overstressed and may inhibit growth, it is necessary to adjust and optimize the promoter activity as described above.
- the expression vector of the present invention can include a selection marker for selecting a transformant.
- yeast expression vectors include Hisl, His2, His3, His4, His5, His6, Leu2, Algl, Alg2, Alg3, Trpl, Lys2, Adel, Ade2, Ura3, and Ura5 genes. Marker genes can be used.
- Selective markers include not only the above auxotrophic markers, but also cerulenin, oleobasidin, zeocin, force napanin, cycloheximide, hygromycin, blasticidin, tetracycline, kanamycin, ampicillin, tetracycline, neomycin It is also possible to select transformants by using drug resistance markers that impart resistance to such drugs. It is also possible to select transformants by using a gene that provides solvent resistance to ethanol, etc., osmotic pressure resistance to glyce mouth salt, etc., and resistance to metal ions such as copper. It is.
- the transformed host cell of the present invention is a transformed host cell having the gene of 1. or a transformed host cell into which the expression vector is introduced.
- the host cell to be transformed is a eukaryotic cell, preferably a yeast.
- yeast include methanol-utilizing yeast strains such as Ogataea minuta, Pichia pastoirs, Hansenul ⁇ a polyraorpha (Pichia angusta), and Candida boidinii, and yeasts such as Saccharomyces cerevisiae, Kluyveromyces lactis, and Yarowia lipolytica ⁇ Shizosaccharomyces pombe.
- Ogataea minuta strain Ogataea minuta YK3 strain ⁇ ochl ⁇ pep4 ⁇ prbl ⁇ ypsl ⁇ ura3 ⁇ adel
- Saccharomyces cerevisiae Saccharomyces cerevisiae BY4741 strain MATa A his3 A leu2 A metl5 A ) Etc. can be used, but is not limited to these.
- the present invention aims to obtain a host cell reinforced with ER, which is essential for secretion, it can also be applied to animal cells and other cells.
- any method can be used for introducing an expression vector into a host cell as long as the transgene is stably present in the host and can be appropriately expressed.
- Commonly used methods such as the calcium phosphate method (Ito et al., Agric. Biol. Chem., 48, 341 (1984)), the electrical mouth position method (Becker, DM et al. ( 1990) Methods. Enzyraol., 194, 182-187), Spheroplast method (Creggh et al., Mol. Cell. Biol., 5, 3376 (1985)), Lithium acetate method (Itoh, H. (1983) J Bacteriol. 153, 163-168), the lipofusion method and the like.
- the production of the protein in the present invention can be carried out by culturing the above transformed host cell by a known method, collecting it from the culture and purifying it.
- “Culture” means not only culture supernatant but also cultured cells, cultured cells, or destructed cells or cells.
- the method for culturing the transformed host cell in the medium can be carried out according to the usual method used for culturing the host cell.
- the culture medium contains a carbon source, a nitrogen source, inorganic salts, etc. that can be assimilated by the microorganism, and the transformant can be cultured efficiently.
- a carbon source may be used as long as the microorganism can assimilate, and carbohydrates such as glucose, fructose, sucrose, and starch, organic acids such as acetic acid and propionic acid, and alcohols such as ethanol and propanol are used.
- Nitrogen sources include ammonia, ammonium chloride, ammonium sulfate, ammonium acetate, ammonium salts of organic acids such as ammonium phosphate, and other nitrogen-containing compounds, as well as peptone, meat extract, corn steep liquor, etc.
- the As inorganic salts ferrous phosphate, ferric phosphate, magnesium phosphate, magnesium sulfate, sodium chloride, ferrous sulfate, manganese sulfate, copper sulfate, calcium carbonate, and the like are used.
- antibiotics such as aureobasidin, ampicillin, and tetracycline can be added to the medium as appropriate, or they can be supplied with genes that complement auxotrophy (Leu, Ura, Trp, etc.) You can remove the amino acid.
- Culture of transformed host cells for example, in the case of yeast, the medium of P H is suitably adjusted to 4-7.
- the culture temperature is 15 to 32 ° C, preferably around 28 ° C.
- the culture time is about 24 to 1000 hours, and the culture can be carried out by standing, shaking, stirring, batch culture under aeration or continuous culture.
- Confirmation of the expression product of the foreign protein gene from the above culture can be performed by SDS-PAGE, Western analysis, ELISA, and the like.
- a normal protein isolation and purification method may be used. If the target protein is produced in cells or cells after culture, collect the target protein by disrupting the cells or cells with an ultrasonic crusher, French press, Mantongaurin homogenizer, dynomill, etc. . When the target protein is produced outside the cells or cells, use the culture solution as it is, or remove the cells or cells by centrifugation or the like.
- the target protein is collected by extraction with an organic solvent, etc., and if necessary, use various types of chromatography (hydrophobic chromatography, reverse phase chromatography, affinity chromatography, ion exchange chromatography, etc.), molecular sieve Isolation and purification may be performed using methods such as gel filtration, electrophoresis using polyacrylamide gel, etc. alone or in combination.
- chromatography hydrophobic chromatography, reverse phase chromatography, affinity chromatography, ion exchange chromatography, etc.
- molecular sieve Isolation and purification may be performed using methods such as gel filtration, electrophoresis using polyacrylamide gel, etc. alone or in combination.
- the above culture method and purification method are examples, and are not limited thereto.
- the amino acid sequence of the purified gene product can be confirmed by a known amino acid analysis, for example, an automatic amino acid sequencing method by Edman degradation method.
- yeast when used as a host cell, it is more preferable to perform the above culture under conditions that inhibit protein 0-raannosyltransfase erase (PMT) activity.
- PMT protein 0-raannosyltransfase erase
- Type 0 sugar chains in mammals is performed by adding GalNAc mainly by Peptide 0-GalNAc transferase present in the Golgi apparatus. This glycosylation occurs after protein folding.
- the formation of type 0 sugar chains in yeast and mold begins with the addition of mannose to the serine or threonine residues of proteins by Protein-0-mannosyltransferase (PMT) encoded by the PMT gene. . This addition reaction is called PMT activity.
- PMT Protein-0-mannosyltransferase
- This mannose addition is performed in parallel with protein folding in the endoplasmic reticulum (ER) in the cell, so it is unnecessary for sites that do not occur in mammalian protein expression.
- Sugar chains may be added. As a result, the formation of aggregates due to unnecessary modification results in decreased activity.
- the following two points can be considered as methods for suppressing the addition of type 0 sugar chain, which is peculiar to yeast and mold. These methods can also be combined.
- the method for suppressing the protein O-mannosyltransferase (PMT) activity described in (1) above can be performed, for example, by adding a PMT activity inhibitor (PMT inhibitor) to the medium.
- PMT activity inhibitors include rhodanine-3-acetic acid derivatives (Bioorganic & Medicinal Chemistry).
- the PMT activity inhibitor (rhodanine-3_acetic acid derivative) was originally studied as an antibacterial agent, and was not studied for improving protein quality and productivity. The effect was found for the first time. PMT is important for the production of mannoprotein that constitutes the yeast cell wall, and if PMT activity is reduced too much, it affects the growth of the yeast. Therefore, when using an inducible expression system, it is more effective to add a PMT activity inhibitor at the time of expression of a foreign protein gene after cell growth, and high quality with suppressed type 0 glycosylation. Purpose Tampa It will be possible to produce the maximum quality.
- PMT protein O-mannosyltransfase
- PMTs acting on glycoproteins are different.
- PMT protein has selectivity with respect to addition of type 0 sugar chain to an antibody. That is, as described in the Examples, the PMT5 or PMT6 gene disruption strain had no effect of inhibiting 0-type glycosylation.
- PMT is an important gene for yeast growth, and if the activity is lost or extremely reduced, such as disruption of the PMT gene, the cell wall becomes weak, so the PMT gene disruption strain Be careful about using. It is not always effective to disrupt the PMT gene as shown in W02002 / 046437, and sometimes the growth of the foreign protein may be adversely affected by growth inhibition. It is required to disrupt or suppress the expression of PMT gene with optimal PMT activity that can be minimized. Examples of methods for suppressing the PMT gene include methods using antisense RNA and RNAi, methods for attenuating the promoter, and the like.
- a DNA fragment is inserted into the PMT structural gene portion and the promoter region, and the gene is divided (hereinafter referred to as gene division.
- a plasmid vector is called a gene disruption vector.
- a PMT gene fragment that does not have PMT activity but is produced as a protein or a method in which a mutation is added to an amino acid residue involved in the activity to introduce PMT activity (dominant negative) can be used.
- Plasmids, restriction enzymes, DNA modifying enzymes and the like used in the examples of the present invention are commercially available and can be used in accordance with conventional methods.
- DNA The procedures used for cloning, sequencing, host cell transformation, culture of transformed host cells, collection of enzymes from the resulting culture, purification, etc. are well known to those skilled in the art. A certain force can be known from the literature.
- pOMexGPlU 3 ⁇ 43 ⁇ 4 2 00 3/0914; according to 31 pOMex 3 G, and was used pOMexGPlU material.
- p0Mex3G was cleaved with Xbal, and after blunt end treatment, a Spel linker was introduced.
- the resulting vector was named p0Mex3GXS.
- pOMexGPlU was cleaved with EcoT22I, treated with a blunt end, and an Apal linker was introduced.
- the obtained vector was named pOMexGPlUTA.
- the pOMexGPlUTA was digested with HindIII- ⁇ , GAP promoter isolated after blunt-ended, a fragment of about 2.
- pOMexGAT-G is a Spel-BamHI site in the A0X1 expression cassette and Sall- in the GAP expression cassette.
- a tandem vector with an Apal site is A tandem vector with an Apal site.
- POMex4A described in W02003 / 091431 was used as a material.
- the pOMexGPlU was treated with EcoT22I, treated with a smooth end, and a BamHI linker was introduced.
- the resulting vector was named p (exGP2U.
- the pOMexGP2U was treated with Sail, and after blunt end treatment, the Spel linker was introduced.
- the resulting vector was named p0MexGP3U.
- the p0MexGP3U was digested with Hindlll-Kpnl. An approximately 2.0 kb fragment containing the GAP expression cassette was isolated from pOMex4A treated with Hindlll-Kpnl
- pOMexGPlA is an exogenous gene expression vector having a Spel-BamHI site in the GAP expression cassette.
- PGK1 gene encoding phosphoglycerin kinase from Ogataea minuta IF010746 Acquisition and base sequencing were performed.
- DNA degenerate primers having nucleotide sequences corresponding to the conserved amino acid sequences RVDFNVPLD and EGKELPGVA derived from Saccharomyces cerevisiae (GENBANK accession number; P00560) and Candida raaltosa (GENBANK accession number; P41757) were synthesized as follows.
- PPG5 5'-GN GTN GAY TTY AAY GTN CCN TTR GA-3 '(SEQ ID NO: 1)
- PPG3 5 '-GY NAC DCC NGG YAA YTC YTT DCC YTC-3' (SEQ ID NO: 2)
- Primer PPG5 (SEQ ID NO: 1) corresponds to the amino acid sequence RVDFNVPLD and primer PPG3
- SEQ ID NO: 2 is the sequence of the phase chain of the base sequence corresponding to the amino acid sequence IJEGKELPGVA. 0.
- Minuta IF010746 strain chromosomal DNA is used as a saddle, and PCR [94 ° C for 30 seconds, 50 ° C for 1 minute, 72 ° C for 1 minute) X 25 cycles] using primers PPG5 and PPG3 It was.
- the amplified DNA fragment of about 1.2 kb was recovered and cloned using the T0P0 TA Cloning Kit.
- the plasmid DNA inserted has high homology with the amino acid sequence of the PGK1 gene derived from S. cerevisiae and C. maltosa.
- a clone having a base sequence encoding an amino acid sequence was selected. 1.
- the 2 kb inserted DNA fragment was recovered after digestion of the plasmid with EcoRI and electrophoresis on agarose.
- Chromosomal DNA of 0. minuta IF010746 strain was cleaved with various restriction enzymes and subjected to 0.8% agarose gel electrophoresis. The separated DNA was transferred to Hybond N + nylon membrane (Amersham). The DNA fragment obtained in the above (1-3-1) was labeled with AlkPhos DIRECT (Amersham), and Southern hybridization was performed. Hybridization can be performed by conventional methods (Molecular cloning 2nd edn., Ed. Sambrook, J., et al., Cold Spring Harbor
- nucleotide sequence between the BaraHI regions in the plasmid pOMPGKl was determined by the primer walking method, it had the nucleotide sequence shown in SEQ ID NO: 3.
- the nucleotide sequence of SEQ ID NO: 3 has an open reading frame consisting of 1254 base pairs beginning at the 4766th position and ending at the 6016th position.
- the homology between the amino acid Imi shown in SEQ ID NO: 4 deduced from this open reading frame and phosphoglycerin kinase from Saccharomyces cerevisiae and Candida maltosa was determined to be 74% and 81%, respectively. Met.
- 0PGK-P-R 5
- 0PGK-T-F 5'-GGATCCGTGGGATTTGCGTGATCTACGTAGTGGTTATTTT-3 '(SEQ ID NO: 7)
- 0PGK-T-R 5'-GGTACCGCAGTGAAAGGCGATGCCACCATGTGCAAGGAGTTC-3 '(SEQ ID NO: 8)
- the amplified 1.5 kb and 1.0 kb DNA fragments were recovered and cloned using the T0P0 TA Cloning Kit.
- the base sequence of the inserted DNA fragment was determined, and a clone having the correct base sequence was selected.
- the inserted DNA fragments of 1.5 kb and 1.0 kb were isolated as Hindlll-BamHI fragment and BamHI-Kpnl fragment, respectively.
- aMF secretion signal of MF alphal (GENBANK accession number; P01149) derived from S. cerevisiae, the following primer was synthesized.
- Sp-aMFs-F 5,-ACTAGTATGAGATTTCCTTCAATTT-3, (SEQ ID NO: 9)
- Sl-aMFs-F 5'-GTCGACATGAGATTTCCTTCAATTT-3 '(SEQ ID NO: 10)
- Xb-aMFs-R 5 '-AGCTTCAGCCTCTCTTTTATCTAGAGA-3' ( ⁇ S column number 11)
- an anti-TRAIL receptor antibody gene (W02002 / 094880) was used.
- the following primers were synthesized.
- Xb-KREAEA-Hc-F 5, -TCTCTAGATAAAAGAGAGGCTGAAGCTCAGCTGCAGCTGCAGGAGTC-3 '(SEQ ID NO: 12)
- Hc-R-Bg 5, -CCAGATCTGGATCCTCATTTACCCGGAGACAGGGAGAGG-3 '(SEQ ID NO: 13)
- Xb-KREAEA-Lc-F 5, -TCTCTAGATAAAAGAGAGGCTGAAGCTGAAATTGTGTTGACACAGTC-3 '(SEQ ID NO: 14)
- Lc-R-Ap 5'-AAAGGGCCCTCAACACTCTCCCCTGTTGAAGCTCT-3 '(SEQ ID NO: 15)
- pOMexGAT-G / Ab is an antibody expression vector carrying both antibody heavy chain and light chain expression units.
- the active HAC1 gene was obtained by culturing cells (0. minuta YK2-3 strain) in YPD medium at 27 ° C for 12 hours, and then adding tunicamycin to the medium to induce 10 mg / ml to induce UPR. Added. Cultivation was further continued for 12 hours in the medium supplemented with mycin, and after harvesting, mRNA was prepared using Yeastar RNA kit (ZYMO research).
- the obtained mRNA was DNase-treated with DNase I Amplification Grade (Invitrogen).
- CDNA was synthesized from this mRNA using Superscript III First-Strand Synthesis for RT (Invitrogen).
- This cDNA was subjected to PCR using the DNA primers HAC1-1 (SEQ ID NO: 16) and HAC1-12 (SEQ ID NO: 17) described below [94 ° C for 30 seconds, 52 ° C for 30 seconds, 72 ° C at (1 minute) X 30 cycles], cloned into PCR2.
- 1-T0P0 Invitrogen
- the nucleotide sequences derived from the two gene fragments amplified by PCR were confirmed (SEQ ID NOs: 18, 19).
- HAC1-1 5, -ATGACTTCCTTTTCAGCACCGCATC-3 '(SEQ ID NO: 16)
- HAC1-12 5'-CAAAATTGCAAGCAAGTTAACCG-3 '(SEQ ID NO: 17)
- cDNA fragments obtained Of the two types of cDNA fragments obtained, one matched the genomic sequence, but the other was partially missing and shortened, and was a cDNA fragment spliced by Irelp activated by UPR. .
- PCR [94 °] was performed using the following DNA primers speHACIF (SEQ ID NO: 20) and bglHAClR (SEQ ID NO: 21) and the cDNA pool considered to contain the activated HAC1 cDNA. 30 minutes at C, 1 minute at 55 ° C, 30 seconds at 72 ° C)).
- speHACIF 5'-gactagtATGACTTCCTTTTCAGCACCG-3 '(SEQ ID NO: 20)
- bglHAClR 5'-cagatctTCATGACAAGAAATCATCGAAT-3 '(SEQ ID NO: 21)
- the obtained approximately 1 kb fragment contains the start codon to the start codon of the active HAC1 gene.
- the human RRBP1 gene sold by Kazusa DNA Research Institute
- the resulting approximately 4.5 kb fragment was introduced into pOMexGPlA treated with Spel-BamHI using BD In-Fusion Dry-Down PCR Cloning Kit (BD Science), and the start codon of the human RRBP1 gene was encoded from the Spel site.
- the sequence was determined to be about 500 bp including the coding region, and about 500 bp containing the region coding for the entire human RRBP1 gene from the BamHI site.
- the resulting vector was named pOMexGPlA / pl80PCR.
- pOMexGPlA / pl80PCR was digested with Ndel-Ascl to remove a fragment from 110 bp to 4541 bp in human RRBP1 gene 0RF.
- a fragment containing 110 bp to 4541 bp in 0RF was obtained by digesting the human RRBP1 gene received from Kazusa DNA Laboratory with Ndel-Ascl, and digested with the previous Ndel-Ascl.
- P0MexGPlA / pl80PCR was introduced.
- the resulting vector was named pOMexGPlA / pl80 (Fig. 3).
- p0MexGPlA / P 180 is a human RRBP1 gene expression vector.
- the vector pOMexGAT-G / Ab digested with Not I was transformed by electroporation with 0. minuta YK-3 strain ( ⁇ ochlApep4AprblAypslAura3 ⁇ adel: described in W02003 / 091431).
- the electro volatilization conditions described in W02003 / 0 9 14 3 l were used.
- Transformed cells are selected and cultured on YPD agar plate medium containing 50 ⁇ g / ml G418. Then, the genome was extracted, and the heavy chain was introduced by PCR using the above-mentioned DNA primers Xb-KREAEA-He (SEQ ID NO: 12) and Hc-R-Bg (SEQ ID NO: 13).
- Xb-KREAEA-Lc-F The introduction of the light chain was confirmed by PCR using (SEQ ID NO: 14) and Lc-R-Ap (SEQ ID NO: 15). A strain in which introduction of both heavy chain and light chain genes was confirmed was designated as an antibody producing strain 0. minuta A01 strain.
- P 0MexGPlA / pl80 digested with Sse8783I was introduced into the antibody producing strain 0. minuta A01 strain bred in Example 5 by the electroporation method described above.
- Select the ADE + strain on the SD agar plate medium for transformation extract the genome after culturing, and introduce the RRBP1 gene into the pl80 MSp-F (SEQ ID NO: 24) and pl80 UBg-R (SEQ ID NO: 25). It was obtained by confirming by PCR using).
- the obtained transformant was named 0. minuta AK2R strain.
- transformation was performed using pOMexGPlA digested with Sse8783I as a control to obtain a 0. minuta AK2A strain.
- pOMexPGHy-Hacl digested with Aor51HI was introduced into the 0. minuta AK2R strain and the 0. minuta AK2A strain by the electroporation method.
- Activation of the transformant HAC1 gene was introduced by selecting Hygromycine on YPD agar plate medium supplemented with 50 ⁇ g / ml, culturing, extracting the genome, and using the DNA primer speHACIF ( This was confirmed by PCR using SEQ ID NO: 20) and bglHAClR (SEQ ID NO: 21).
- the resulting strains were named 0. minuta AK3RH and 0. minuta AK3AH strains.
- pOMexPGHy digested with Aor51HI was introduced as a control into 0. minuta AK2R strain and 0. minuta AK2A strain, respectively, to obtain 0. minuta AK3RHy strain and 0. minuta AK3AHy strain.
- the cells were cultured at 28 ° C. for 4 days using 0.5% glycerol, 0.1 M phosphate buffer (pH 6.0). Prepare the culture supernatant from the culture medium, and subject it to SDS-PAGE. Then, blot the separated protein onto a PVDF membrane, and label it with anti-human antibodies (anti-human Fc antibody, anti-kappa antibody) As shown in Fig. 4, the RRBP1 gene and the activated HAC1 gene-transferred strain secreted a significant amount of antibody as compared to other strains. [Example 8] Productivity of secretory antibody by transformed yeast strain (0. minuta)
- the amount of antibody produced in the 0.minuta AK3RH strain that co-expressed the active HAC1 gene and the RRBP1 gene was the control strain 0.In addition to the minuta AK3AHy strain, the active HAC1 gene or RRBP1 gene was introduced alone The antibody production was markedly higher than that. From the above, it was confirmed that the co-expression of the active HAC1 gene and the RRBP1 gene has an effect more than a synergistic effect on the antibody productivity.
- Example 9 Production of an antibody using a transformed yeast strain (0. minuta) under conditions in which the formation of type 0 sugar chain is suppressed
- aMF secretion signal of S. cerevisiae-derived MF alphal (GENBANK accession number; P01149) and the light chain and heavy chain of the anti-TRAIL receptor antibody as a fusion protein, linked by over l ap extension PCR method using the following oligonucleotide primers scratch anti-TRAIL receptor antibody gene (W02001 / 083560).
- AlfH02 5'-CTCCACCAGCTGTACTTCTCTTTTCTCGAGAGATA-3 '(SEQ ID NO: 27)
- Alf thigh 5'-GGTCGACTCATTTACCCGGGGACAG-3 '(SEQ ID NO: 29)
- AlfL02 5'-TGGGTCATCTGAATGTCTCTTTTCTCGAGAGATA-3 '(SEQ ID NO: 30)
- AlfL03 5'-TATCTCTCGAGAAAAGAGACATTCAGATGACCCA-3 '(SEQ ID NO: 31)
- AlfL04 5'-GGTCGACCTAACACTCTCCCCTGT-3 '(SEQ ID NO: 32)
- the aMF secretion signal gene region was amplified using S. cerevisiae genomic DNA prepared by Y-DER Yeast DNA Extraction Reagent (PIERCE) as a saddle. PCR with Primer EcoALF (SEQ ID NO: 26) and AlfH02 (SEQ ID NO: 27) for heavy chain (95 ° C for 10 seconds, 55 ° C for 30 seconds, 68 ° C for 60 seconds) X 30 cycles ] For light chain, PCR using primers EcoALF (SEQ ID NO: 26) and AlfL02 (SEQ ID NO: 30) [95 ° C for 10 seconds, 55 ° C for 30 seconds, 68 ° C for 60 seconds) X 30 Cycle], and each amplified DNA fragment of approximately 0.26 kb was recovered.
- PIERCE Y-DER Yeast DNA Extraction Reagent
- the antibody gene region was amplified using the anti-TRAIL receptor antibody cDNA (W02001 / 083560) as a saddle type. PCR with primers AlfH03 (SEQ ID NO: 28) and AlfH04 (SEQ ID NO: 29) for heavy chain [ 95 ° C for 10 seconds, 55 ° C for 30 seconds, 68 ° C for 90 seconds) X 30 cycles] PCR using primers AlfL03 (SEQ ID NO: 31) and AlfL04 (SEQ ID NO: 32) for light chain (95 ° C for 10 seconds, 55 ° C for 30 seconds, 68 ° C for 90 seconds) X 30
- the amplified DNA fragments of about 1.35 kb heavy chain region and about 0.65 kb light chain region amplified respectively were recovered.
- the aMF secretion signal region for the heavy chain and the heavy chain region of about 1.35 kb are used as a saddle type primer.
- Each recovered DNA fragment was cloned into pCR2.1-T0P0. From the nucleotide sequence of the inserted DNA fragment, it was confirmed that the aMF secretion signal-antibody heavy chain and the aMF secretion signal-antibody light chain each had a gene fused in-frame.
- the obtained plasmids were named TOPO-alfHc and TOPO-alfLc, respectively.
- the aMF secretion signal collected by EcoRI-Sail digestion-the DNA fragment that codes the antibody heavy chain and aMF secretion signal-antibody light chain is taken into the large intestine.
- the obtained plasmids were named YEp352GAP-II-alfHc and YEp352GAP-II-alfLc.
- BamHI-GAP promoter 1 aMF secretion signal-antibody heavy chain from YEp352GAP_II-alfHc and YEp352GAP-II-alfLc using the BamHI restriction enzyme sites at both ends of GAP promoter ⁇ "-termine turcaset, respectively.
- -Gene fragments encoding GAP terminator 1 "-BamHI (fragment 1) and BamHI-GAP promoter 1 aMF secretion signal-antibody light chain-GAP terminator 1-BamHI (fragment 2) were recovered.
- Fragment 1 and fragment 2 were cut out fragment 1 or fragment 2, YE P 352GAP- II- alfHc or Ep352GAP_II - was introduced into the BamHI site of AlfLc 3 fragments Raigeshiyon.
- the resulting vector was named YEp352 GAP-II-alfHc / alfLc (FIG. 7). From the restriction enzyme cleavage pattern, it was confirmed that fragment 1 and fragment 2 were introduced in tandem in the forward direction in YEp352 GAP-II-alfHc / alfLc, YEp352 GAP- ⁇ -alfHc / alfLc An antibody expression vector retaining both expression units of the chain and light chain.
- Example 1 Construction of S. cerevisiae active HAC1 gene expression vector
- the HACl precursor mRNA of S. cerevisiae has 252 nucleotides removed by the RNase activity of active IREl, and becomes HAC1 mature mRNA.
- This mature HAC1 mRNA is translated into active HAC1 with 10 amino acid residues at the C-terminal removed and a new 18 amino acid residue added (PNAS 97, P4660-4665 (2000)). Therefore, a gene encoding active HACl was constructed by the overlap extension PCR method using the following oligonucleotide primers.
- HAC-Sac-ATG 5'-GGAGCTCATGGAAATGACTGATTTTG-3 '(SEQ ID NO: 33)
- HAC-internalR 5 '-GAATTCAAACCTGACTGCGCTTCTGGATTACGCCAATTGTCAAG-3' (SEQ ID NO: 34)
- HAC-internalF 5 '-CTTGACAATTGGCGTAATCCAGAAGCGCAGTCAGGTTTGAATTC-3' (SEQ ID NO: 35)
- HAC-Sma-STOP 5 '-GCCCGGGTGAGAGATGATGA
- Genomic DNA of S. cerevisiae prepared by Y-DER Yeast DNA Extraction Reagent (PIERCE) was used as a cage.
- the amplified DNA fragments of about 0.66 kb (fragment A) and about 0.06 kb (fragment B) were recovered.
- PCR was performed using primers HAC-Sac-ATG (SEQ ID NO: 33) and HAC-Sma-STOP (SEQ ID NO: 36) for 10 seconds at 95 ° C, using the amplified fragment A and fragment B as a saddle. 30 ° C at 60 ° C, 60 seconds at 68 ° C)), and the amplified DNA fragment of about 0.7 kb was obtained.
- the recovered DNA fragment was cloned into pCR2.1-T0P0. From the nucleotide sequence of the inserted DNA fragment, it was confirmed that it had a gene encoding 238 amino acid residues of active HAC1.
- the resulting plasmid was named T0P0-aHacl.
- the human RRBP1 gene sold by Kazusa DNA Research Institute
- P180kpnatg 5'-GGGTACCATGGATATTTACGACACTC-3 '(SEQ ID NO: 37)
- the obtained approximately 4.7 kb fragment was recovered and cloned into pCR2.1-T0P0. From the base sequence of the inserted DNA fragment, it was confirmed that about 600 bp at both ends of the inserted fragment contained the target base sequence correctly.
- the resulting plasmid was named TOPO-P180. Then digested the TOPO-P180 by restriction enzyme Ndel and Hpal, and removing the fragment containing the region corresponding to 110bp_4524bp the KIAA139 8. An approximately 4.4 kb Ndel-Hpal fragment of KIAA1398 was introduced into this removed region to construct T0P0-P180N, and the restriction enzyme Xbal site was demethylated using Escherichia coli SCS110 strain (Stratagene).
- the Kpnl-Xbal fragment containing the gene encoding RRBP1 was recovered using the Kpnl-Xbal restriction enzyme sites introduced into the primers -P180kpnatg (SEQ ID NO: 37) and P180xbastop (SEQ ID NO: 38).
- YEp352GAP-II-pl80 was digested with the restriction enzyme Pvul, and a Pvul fragment containing the GAP promoter ⁇ "-RRBP1 gene-GAP terminator was recovered.
- This Pvul fragment was recovered from the E. coli-yeast shuttle vector YE P 351 (Yeast 2, pl63-167 (1986)) ligated to the Pvul fragment containing the marker gene and the replication essential region, YEp351GAP-II-pl80 was constructed (Fig. 7) This vector carries the RRBP1 gene expression unit.
- Example 11 YEp351GAP-II-aHACl constructed in 1 was digested with the restriction enzyme Hpal. Next, the BamHI fragment containing GAP promoter 1 to RRBP1 gene-GAP terminator 1 was recovered from YE P 352GAP-II-pl80 constructed in Example 12 and both ends were blunted with T4 DNA polymerase (Takara Bio). And introduced into the Hpal site of YEp351GAP-II-aHACl.
- the resulting plasmid was named YEp351GAP-II-aHACl / pl80 (Fig. 7).
- Fig. 7 By analyzing the nucleotide sequence, the insertion direction of the BamHI fragment containing the introduced GAP promoter-RRBP1 gene-GAP terminator was determined. This vector holds an expression habit of active HAC1 gene and RRBP1 gene.
- Example 14 Construction of antibody-expressing yeast strain and antibody-expressing yeast strain (S. cerevisiae) expressing active HAC1 gene and RRBP1 gene
- a competent cell of S. cerevisiae BY4741 strain (MATa Ahis3 A leu2 Ametl5 A ura3) was prepared by Frozen-EZ Yeast Transformation II Kit (ZYMO RESARCH).
- S. cerevisiae BY4741 strain was inoculated into 5 ml of YPAD medium [YPD medium containing 0.04% adenine (Sigma)], and the cells obtained by overnight culture (30 ° C., 310 rpm) were used.
- the expression vector constructed in Example 10 to Example 13 was introduced into S.
- YEp352 GAP-II-alfHc / alfLc which holds the expression units for antibody heavy and light chains, has a URA3 marker gene that complements the host uracil-requiring mutation.
- YEp351 GAP-II (a control vector which gene is not introduced)
- YEp351GAP_II-aHACl active HAC1 expression base Kuta one
- YEp351GAP-II-pl80 RRBP1 expression vector
- YEp351GAP- II_aHACl / P 180 active Type HAC1 gene and RRBP1 co-expression vector
- the host was transformed so that it could grow only when both vectors were introduced in the following combinations, and four types of antibody-expressing yeast strains were constructed.
- the S. cerevisiae T2K01, S. cerevisiae T2K02, S. cerevisiae T2K03 and S. cerevisiae T2K04 strains prepared in Example 14 were cultured at 30 ° C. for 3 days using ST medium. This culture solution was inoculated into YPAD medium to a final concentration of 5% and cultured at 30 ° C for 3 days. A culture supernatant was prepared from the culture solution and used as a sample containing the antibody secreted and produced by yeast. Quantitative analysis of the secreted antibody was performed by sandwich ELISA.
- 96 well plates in the TRAIL receptor protein adsorbed is an antigen of an anti-TRAIL receptor primary antibody, was added yeast sample, Peruokishi Daze labeled human l g G-specific Fc antibody (Peroxidase-Labeled Affinity Purified Antibody To Human IgG (Fc) (KPL)) and ABTS peroxidase substrate (KPL).
- yeast sample Peruokishi Daze labeled human l g G-specific Fc antibody (Peroxidase-Labeled Affinity Purified Antibody To Human IgG (Fc) (KPL)
- KPL Peroxidase-Labeled Affinity Purified Antibody To Human IgG
- KPL ABTS peroxidase substrate
- the productivity of the S. cerevisiae T2K03 strain into which only the RRBP1 gene was introduced was almost the same as that of the control strain S. cerevisiae T2K01.
- the S. cerevisiae T2K02 strain into which only the active HAC1 gene was introduced showed about twice the productivity of the control strain S. cerevisiae T2K01.
- the S. cerevisiae T2K04 strain in which the active HAC1 gene and the RRBP1 gene were co-expressed was significantly higher than the S. cerevisiae T2K01 strain, which is the control strain, but also the one in which the active HAC1 gene or RRBP1 gene was introduced alone.
- Antibody production was shown (approximately 7 times the control). It was confirmed that the co-expression of the active HAC1 gene and the RRBP1 gene has a synergistic effect on antibody productivity.
- T2K03 S. cerevisiae T2K04 strain was cultured at 30 ° C. for 3 days using ST medium.
- This culture broth was adjusted to a final concentration of 5% PMT inhibitor (rhodanine-3-acetic acid derivative: 5-[[3,4- (1-phenylraethoxyphenyl] methylene] -4-oxo-2- thioxo-3-thiazolidineacetic acid (Bioorganic & Medicinal Chemistry Letters, Vol. 14, p3975, (2004) in Compound 1c)) was inoculated to the YPAD medium initially added and cultured at 30 ° C for 3 days.
- PMT inhibitor rhodanine-3-acetic acid derivative: 5-[[3,4- (1-phenylraethoxyphenyl] methylene] -4-oxo-2- thioxo-3-thiazolidineacetic acid (Bioorganic & Medicinal Chemistry Letters, Vol. 14, p3975, (2004) in Compound 1
- a culture supernatant was prepared from the culture solution and used as a sample containing the antibody secreted and produced by yeast.
- quantitative assay was performed by Sandwich ELISA method using an antibody produced from animal cells (NS0) as a standard.
- the S. cerevisiae T2K02 strain into which the active HAC1 gene was introduced and the S. cerevisiae T2K03 strain into which the RRBP1 gene was introduced were clearly higher than the control strain S. cerevisiae T2K01. Productivity was shown. Furthermore, the S. cerevisiae T2K04 strain in which the active HAC gene and the RRBP1 gene were co-expressed was markedly different from the S. cerevisiae T2K01 strain, which is a control strain, as well as those that had only the active HAC1 gene or RRBP1 gene introduced. High antibody production (about 8 times the control). The synergistic effect on antibody production by co-expression of the activated HAC1 gene and the RRBP1 gene was further enhanced by suppression of type 0 sugar chain formation.
- the YPS1 gene disruption vector pDOMYP1 described in W02003 / 091431 was cleaved with BaraHI and Clal, and transformed into the 0. minuta TK5-3 strain ( ⁇ ochl A ura3 ⁇ adel) described in W02003 / 091431 by the electric pulse method. Went. In order to confirm that the YPS1 gene of these strains was destroyed, the following primers were synthesized.
- Chromosomal DNA isolated from the transformed strain is used as a cocoon-type, using primers DY5 and DY3,
- YK4 strain ( ⁇ ochl A ura3 A adel ⁇ ypsl:: URA3). After 0. minuta YK4 strain was cultured in YPD medium until stationary, a strain resistant to 5-fluororotidine acid (5-F0A) was obtained. Five -
- POMexGPlU described in W02003 / 091431 was ligated after Spel cutting and blunt end treatment. 'Changed the Sail site and EcoT22I site of the obtained plasmid to the Spel site and the BaraHI site respectively.
- the obtained plasmid was named pOMexGPlUASp.
- the antibody gene was designed from the amino acid sequence of the anti-TRAIL receptor antibody gene (W02002 / 094880) in consideration of the codon usage frequency of O. minuta and artificially synthesized (Takara Bio).
- S. cerevisiae SUC2 signal or Chicken Lysozyrae signal is added to the N-terminus of light chain and heavy chain genes, and the restriction enzyme sites (Xbal site on the 5 'side and BamHI site on the 3' side) are added to both ends. (Base sequence numbers 51, 53, 55, 57; amino acid sequence numbers 52, 54, 56, 58).
- Two types of light chain gene fragments with different signals digested with Xbal-BamHI were introduced into the vector pOMexGPlA prepared in Example 1 (2), and the obtained vector was called pOMexGPA / AbSUC and pOMexGPA / AbLys. Named.
- Two heavy chain gene fragments with different signals digested with Xbal-BamH were introduced into the Spel-BaraHI site of the vector pOMexGPlUASp, and the resulting vector was named pOMexGPU ⁇ Sp / AbLys for pOMexGPUASp / AbSUC. .
- PCR using pOMexPGHy (Example 1 (3-4)) as a saddle and DNA primers PGKHy-F (SEQ ID NO: 5 9) and PGKHy-R (SEQ ID NO: 60) for 30 seconds at 94 ° C, 55
- the hygromycin B resistance gene was amplified at 30 ° C for 30 seconds and 72 ° C for 1 minute).
- the amplified gene fragment was introduced into pOMexPGHy digested with Spel-Bglll using an In-fusion kit (BD Bioscience), and the base sequence of the inserted fragment was determined.
- the obtained plasmid was used as a saddle and PCR using DNA primers PGKpUC-p (SEQ ID NO: 6 1) and PGKpUC-1: (SEQ ID NO: 6 2) [94 ° C for 30 seconds, 55 ° C for 30 seconds, PGK promoter hygromycin B resistance gene-PGK terminator-containing gene fragment was amplified at 72 ° C for 2 minutes x 20 cycles].
- PGKpUC-p 5'-AATTCGAGCTCGGTACAGGGATACATGGGATACCAAAG-3 '(SEQ ID NO: 6 1)
- PGKpUC-t 5 '-GAGGATCCCCGGGTACCAGGGTCGATTTTCTTGGTCGA-3' (SEQ ID NO: 6 2)
- the amplified gene fragment was introduced into pUC118 (Takara Bio) digested with Asp718I using In-fusion kit (BD Bioscience) and inserted The base sequence of the fragment was determined.
- the resulting plasmid was named PGKHyg / P UC118.
- pOMexGPlU A Sp was digested with HindIII_KpnI, a cassette containing GAP promoter 1 "-terminator was isolated, and inserted into Hindlll-Kpnl-digested PGKHyg / pUC118. The resulting plasmid was labeled with GAP / HyG / P UC118.
- pUC19 Takara Bio was digested with Ndel-EcoRI, blunt-ended, and then ligated to remove the Ndel-EcoRI region present inside pUC19.
- GAP / HyG / pUC118 was isolated by Hindlll-Sacl digestion, and the GAP promoter-terminator and PGK promoter-hygromycin B resistance gene-PGK terminator gene fragment were inserted. The resulting plasmid was named pOMexHy.
- the antibody heavy chain gene fragment added with Chicken Lysozyme signal digested with Xbal-BamH was introduced into pOMexHy treated with Spel-BamHI, and the resulting vector was named pOMexHy / AbLys.
- Antibody expression vectors digested with Not I, pOMexGPA / AbLys and pOMexGPU ⁇ Sp / AbLys were used to transform 0. minuta YK5 strain ( ⁇ ochl ⁇ ypsl ⁇ ura3 ⁇ adel) by eletroporation. .
- the conditions for the elect port position were those described in W02003 / 091431.
- Transformed cells were selected on SD agar plate medium [2% glucose, 0.67% yeast nitrogen base (Dif co)] Single colonies were selected from B2YP4G medium [1. 34% yeast nitrogen base ( Difco), 2 ° /.
- Yeast extract (Difco), 4% polypeptone (Difco), 4% glycerol, 0.1M phosphate buffer (PH6.0)], 27 ° C Culture supernatant was prepared from the culture solution, Western analysis was performed by the method described in Example 7, and an antibody producing strain into which the antibody light chain and heavy chain genes were introduced was selected, and 0 As shown in Fig. 9, the 0. rainuta AA1 strain secreted a significant amount of antibody as compared to the 0. minuta A01 strain prepared in Example 5.
- Antibody expression vectors pOMexGPA / AbSUC and pOMexGP.U ⁇ Sp / AbSUC digested with Notl were introduced into 0. rainuta TK5-3 strain ( ⁇ ochl A ura3 ⁇ adel) described in W02003 / 091431, and antibody expression strains 0 ⁇ I got rainuta YY1.
- the electroporation method and the method for selecting strains were the same as described above. [Example 19] Acquisition of active HAC1 gene of P. pastoris and construction of expression vector
- the P. pastoris active HAC1 gene was obtained from cells (P. pastoris GS115 strain) in the same manner as in Example 3.
- CDNA was synthesized from P. pastoris GS115 strain by the method of Example 3.
- This cDNA was subjected to PCR using the following DNA primers HACpl-1 (SEQ ID NO: 6 3) and HACpl-12 (SEQ ID NO: 6 4) [94 ° C for 30 seconds, 52 ° C for 30 seconds, 72 ° C 1 min) x 30 cycles], cloning to pCR2. 1-T0P0 (Invitrogen), and the nucleotide sequences derived from the two gene fragments amplified by PCR were confirmed (SEQ ID NOs: 65, 6). 6).
- HACpl-1 5, -ATGCCCGTAGATTCTTCTCATAAGACAGC-3 '(SEQ ID NO: 6 3)
- HACpl-12 5'-CAAAGTCATTTAAATCAAATGCATTAGCGG-3 '(SEQ ID NO: 6 4)
- one (SEQ ID NO: 6 5) has a force S that matches the genomic sequence, and the other (SEQ ID NO: 6 6) is partially missing and shortened, and is activated by UPR. It was a cDNA fragment spliced by Irelp.
- PCR was performed using the following DNA primers speHACplF (SEQ ID NO: 6 7) and bglHACplR (SEQ ID NO: 6 8) and the cDNA pool considered to contain the activated HAC1 cDNA. [94 ° C for 30 seconds, 55 ° C for 30 seconds, 72 ° C for 1 minute) X 20 cycles].
- speHACplF 5'-gactagtATGCCCGTAGATTCTTCTCATA-3 '(SEQ ID NO: 6 7)
- bglHACplR 5'-cagatctCTATTCCTGGAAGAATACAAAGT-3 '(SEQ ID NO: 6 8)
- the obtained about 1 kb fragment contains the start to end codons of the active HAC1 gene derived from P. pastoris (SEQ ID NO: 6 9), which corresponds to the amino acid sequence of active HAClp consisting of 304 amino acids. (SEQ ID NO: 70).
- the resulting vector was named pOMexPGHy / PpHacl. This vector holds an active HAC1 gene expression unit derived from P. pastoris.
- Example 1 Using T0P0-aHacl containing S, cerevisiae active HAC1 gene prepared in Example 1 as a template, DNA primer ScHAC-XbaF (SEQ ID NO: 7 1) and DNA primer ScHAC-BamR (SEQ ID NO: 7 2) was used to amplify the S. cerevisiae active HAC1 gene by PCR [94 ° C for 30 seconds, 55 ° C for 30 seconds, 72 ° C for 1 minute) X 20 cycles].
- ScHAC-XbaF 5'-gtctagaATGGAAATGACTGATTTTGAACT-3 '(SEQ ID NO: 7 1)
- Example 1 Antibody production strain bred in 8 0. Minuta AA1 strain digested with Aor51HI 0.
- Minuta-derived active HAC1 gene expression vector p (MexPGHy / Hacl, P. pastoris-derived active HAC1 gene expression vector pOMexPGHy / PpHacl and the active HAC1 gene expression vector pOMexPGHy / ScHacl derived from S. cerevisiae were introduced by the electroporation method described above. Select on YPD agar plate medium added to 50 ⁇ g / ral, and after cultivation, extract the genome. 0. minuta-derived active HAC1 gene expression vector For pOMexPGHy / Hacl, see Example 3.
- AA2ppH strain, 0. minuta AA2scH strain and 0. rainuta AA2Hy strain were cultured by the method shown in Example 18 (2), and Western analysis was performed under non-reducing conditions.
- the 0. minuta AA2oraH strain, 0. rainuta AA2ppH strain, and 0. minuta AA2scH strain showed the addition of sugar chains to the antibody molecule compared to the control 0. minuta AA2Hy strain prepared in (1) above. Although no significant secretion promoting effect of the antibody H2L2 aggregate was observed, it was considered that the same production effect could be expected even if HAC1 gene derived from a species different from the host was introduced.
- AA2Hy strain was inoculated into 5 ml of B2YP4G medium, inoculated with 1 platinum loop, cultured at 27 ° C for 1 day, diluted with B2YP4G medium so that OD600 was 10, and the PMT inhibitor (lc; The concentration of the stock solution (10 mM) was applied to 2 ⁇ [1. After further culturing at 27 ° C for 3 days, OD600 was measured every 24 hours, and PMT inhibitor (lc) was added in increments of 0D600 by 0.04 M. A culture supernatant was prepared from the culture solution, and Example 2
- heterologous HAC1 gene As described above, even when heterologous HAC1 gene is used, it is recognized that it has an effect of promoting antibody secretion. I was cut off.
- the acquisition of PMT1 gene derived from 0. minuta was carried out by using the chromosomal DNA of 0. minuta IF010746 strain as a saddle and using DNA primers PM1-5 (SEQ ID NO: 7 3) and PM1-3 (SEQ ID NO: 74) 30 cycles at 94 ° C, 1 minute at 55 ° C, 2 minutes at 72 ° C).
- the amplified DNA fragment of about 2.4 kb was recovered and cloned using the T0P0 TA Cloning Kit.
- the plasmid insert DNA fragment is higher than the amino acid sequence of the PMT1 gene derived from S. cerevisiae.
- a clone having a base sequence encoding a homologous amino acid sequence was selected.
- the isolated plasmid was named pOmPMl.
- DNA primers PM2-5 SEQ ID NO: 7 7) and PM2-3 (SEQ ID NO: 7 8) were used.
- DNA primer PM4-5 SEQ ID NO: 7 9) was used.
- PM4-3 SEQ ID NO: 80
- DNA primer PM5-5 SEQ ID NO: 8 1
- PM5-3 SEQ ID NO: 8 2
- DNA primer for PMT6 gene PM6-5 SEQ ID NO: 8 3 and PM6-3 (SEQ ID NO: 8 4) were used to obtain the PMT2 gene (base sequence: SEQ ID NO: 85, amino acid sequence: SEQ ID NO: 8).
- PMT4 gene base sequence: SEQ ID NO: 8 7, amino acid sequence: SEQ ID NO: 8 8
- PMT5 gene base sequence: SEQ ID NO: 89, amino acid sequence: SEQ ID NO: 90
- PMT6 gene Plasmids containing (base sequence: SEQ ID NO: 91, amino acid sequence: SEQ ID NO: 92) PM2, p0mPM4, p0mPM5 and p0mPM6 were named.
- PM5--3 5'-CTACTCACTATAGACGGAGCAGTCGATCGA-3 '(SEQ ID NO: 8 2)
- PM6-5 5'-ATGTCCGAGTCAGAGCTGAGAAACCGCAAA-3 '(SEQ ID NO: 8 3)
- PCR [94] was performed using the following DNA primers PMTlhlll (SEQ ID NO: 93) and ⁇ (SEQ ID NO: 94). 30 ° C at 30 ° C, 30 seconds at 55 ° C, 2 minutes at 72 ° C)).
- the amplified DNA fragment of about 1.6 kb was recovered by digestion with HindIII- ⁇ . Then pPICZ a
- plasmid (Invitrogen) was digested with Bglll, treated with a blunt end, inserted with a Hindlll linker, further digested with BamHI, treated with a blunt end, and inserted with a Kpnl linker.
- the obtained plasmid was named pZ-Hd-Kp.
- P Z- HD- the Kp was digested with Hindlll- Kpnl, after isolation of DNA fragments of 2.
- OKB including Zeoshin resistance gene was ⁇ the PMT1 gene partial sequence amplified by the PCR. After determining the base sequence of the partial sequence of the inserted ⁇ gene, the obtained plasmid was named pOmPMldZ.
- pOmPMldZ disrupts the structural gene (CDS) part of the O. minuta PMTl gene and the promoter region, and can repress transcription of the PMT1 gene.
- CDS structural gene
- pOMexGPU ⁇ Sp prepared in Example 18 was digested with Hindlll-Kpnl, the gene fragment containing GAP promoter and terminator was recovered, and digested with Hindlll-Kpnl, containing the zeocin resistance gene. 2. Okb Inserted into the DNA fragment. The obtained plasmid was named GAP / Z.
- DNA primer PMT2hIII (SEQ ID NO: 95, PT2Kp (SEQ ID NO: 96) was used, and PCR was performed at 94 ° C.
- the amplified DNA fragment of about 1.5 kb was recovered, digested with Hindlll-Kpnl, and recovered. DNA obtained The fragment contains the zeocin resistance gene isolated by treating pZ-Hd-Kp with Hindlll-Kpnl. 2. After inserting into the Okb DNA fragment, the base sequence of the inserted PMT2 gene partial sequence was determined. . The obtained plasmid was named p0mPM2dZ. pOmPMMZ is the structural gene of 0. minuta ⁇ gene
- CDS part and promoter region can be separated to suppress transcription of PMT2 gene.
- PMT4FHdinf 5'-GTCATGAGATCCaagctGATCCCTCAATGGAGATCTACT-3 '(SEQ ID NO: 9 7)
- PMT4RKpinf 5'-GGTGTGTGGGGGATCgGGATGCAAATGGATGGCTCGAAC-3 '(SEQ ID NO: 9 8)
- the obtained approximately 1.5 kb DNA fragment was isolated from pZ-Hd-Kp by HindIII- ⁇ treatment and contained the zeocin If gene 2. Okb DNA fragment, In-fusion kit (BD Bioscience) ). After determining the base sequence of the partial sequence of the inserted PMT4 gene, the obtained plasmid was named p0raPM4dZ.
- PROMUl containing a gene fragment having a repeat sequence of about 0.8 kb before and after the URA3 structural gene of 0. minuta described in W02003 / 091431 was digested with Hindlll, treated with a blunt end, and inserted with a BaraHI linker.
- the obtained vector was digested with BaraHI-Bglll, and about 3.3 kb fragment containing 0. minuta URA3 gene was introduced into pBluescriptKS- (Stratagene) digested with BaraHI.
- the resulting vector was named rURApBKS.
- Minuta IF010746 strain chromosomal DNA is in a saddle shape, and PCR is performed using DNA primers PMT5raaeF2 (SEQ ID NO: 9 9) and PMT5maeR (SEQ ID NO: 100) for 30 seconds at 94 ° C and 1 minute at 55 ° C. , 72 minutes at 2 minutes) x 25 cycles].
- the amplified DNA fragment of about 1.5 bk was recovered and introduced into rURApBKS digested with BamHI-Hindlll using the In-fusion kit (BD Bioscience), and the base sequence of the inserted gene fragment was determined.
- the obtained vector was named PMT5K / 0 / rURA3pre.
- PCR was performed using 1 0 1) and PMT5ushiroR (SEQ ID NO: 10 2) for 30 seconds at 94 ° C, 1 minute at 55 ° C, 2 minutes at 72 ° C) X 25 cycles.
- the amplified DNA fragment of about 1.5bk was recovered and digested with Notl. It was introduced into PMT5K / 0 / rURA3pre using an in-fusion kit (BD Bioscience), and the nucleotide sequence of the inserted gene fragment was determined.
- the obtained vector was named PMT5K / 0 / rURA3.
- PMT5maeF2 5'-GACGGTATCGATAAGCTTGATGCGCGGCCTTCCGACCTT-3 '(SEQ ID NO: 9 9)
- PMT5maeR 5 '-CTGGGGAAGCTCGGATCCGGCTCGAGGTCTTCGTTCAGA-3' (SEQ ID NO: 1 0 0)
- PMT5ushiroF 5 '-CTAGTTCTAGAGCGGCCCAGGTCGCTTTCAGGCAGCAG-3' (SEQ ID NO: 1 0 1)
- PMT5ushiroR 5 '-CACCGCGGTGGGGTCC
- Minuta IF010746 strain chromosomal DNA is in a saddle shape and DNA primer PMT6inf5 'armF (SEQ ID NO:
- PMT6inf 3 'armR2 (SEQ ID NO: 1 0 6) were used to perform PCR [94 ° C for 30 seconds, 55 ° C for 2 minutes, 72 ° C for 2 minutes) X 25 cycles] .
- the amplified DNA fragment of about 2.5 kb is recovered, introduced into PMT6K / 0 / rURA3pre digested with Notl-SacII using the In-fusion kit (BD Bioscience), and the nucleotide sequence of the inserted gene fragment is determined. Were determined.
- the obtained vector was named PMT6K / 0 / rURA3.
- PMT6inf5 'armF 5' -GCAGCCCGGGGgatccACGAAACCACGTCCTACT-3 '(SEQ ID NO: 1 0 3)
- PMT6inf5 'armR 5' -GGGGAAGCTcggatcGACTCATCTTGAAACGCA-3 '(SEQ ID NO: 1 0 4)
- PMT6inf3 'armF 5' -AGTTCTAGAGCGGCCTTACCACCATTACATGCC-3 '(SEQ ID NO: 1 0 5)
- PMT6inf3 'armR2 5' -AATTGGAGCTCCACCGCGGCCGCAACTTACTCGACGCTAA-3 '(SEQ ID NO: 1 0 6)
- Example 1 Antibody-producing strains bred in 8 0. minuta YY1 strain, PMT gene disruption vector prepared in Example 23, PMT1 gene disruption vector Pstl, PMT2 gene disruption vector Xhol, PMT4 The gene division vector was digested with Hindi 11 and introduced by the electroporation method. Confirmation of PMT gene disruption in the transformant
- PMTlzeo2 5 '-CGTTCAGACTCTTGTTGATTTTCCAC-3, (SEQ ID NO: 1 1 0)
- PMT2zeo2 5'-CTTGTCCCTCTTGAATGGCGAGTG-3 '(SEQ ID NO: 1 1 2)
- PMT4PCR3 'armF 5' -GGAACACGCCAAACATCATG -3 '(SEQ ID NO: 1 1 3)
- PMT4PCR5 'arraR3 5, -CACAAGCAGAATCAGGCAC -3' (SEQ ID NO: 14)
- the obtained strains were 0. minuta YY2P1 strain (PMT1 gene disruption) and 0. rainuta YY2P2 strain, respectively.
- Each PMT gene fragmented antibody producing strain prepared in (1) above was cultured by the method shown in Example 18 (2) and subjected to Western analysis. As a result, as shown in Fig. 12 and Fig. 14, the PMT1 gene was disrupted. 0. rainuta YY2P1 strain, PMT2 gene was disrupted. 0. minuta YY2P2 strain, and PMT4 gene was disrupted. For 0. minuta YY2P4 stock, it was created in (1) above.
- Example 21 1 The amount of antibody produced in the culture solution prepared in (2) above was measured by the method described in (3). As a standard, an antibody produced from animal cells (CH0) was used. As shown in Fig. 1 3 and Fig. 15, in the 0.minuta YY2P1 strain, PMT2 gene was disrupted 0.minuta YY2P2 strain, and the PMT4 gene was disrupted 0.minuta YY2P4 Compared with the 0. minuta YY2Z strain prepared in (1) above, a slight increase in the amount of antibody aggregate secretion was confirmed (Fig. 13: YY2PU YY2P2, Fig. 15: ⁇ 2-4).
- gPMT5-5 5, -CGGTGACGACTTCGACTAGTCGAG-3 '(SEQ ID NO: 1 1 5)
- gPMT5-2 5′-CGGTGCTGTTGGCGTCGTCATGGGTG-3 ′ (SEQ ID NO: 1 1 6)
- gPMT5-3 5'-GGCGCGTTCCAATTCCACTCTGCTG-3 '(SEQ ID NO: 1 1 7)
- gPMT5-4 5'-CGACGAGTCCTCTCACCAGGAGGTTG-3 '(SEQ ID NO: 1 1 8)
- Chromosomal DNA isolated from the transformed strain is used as a saddle, and PCR ((94 ° C for 30 seconds, 60 ° C) using primers gPMT5-5 (SEQ ID NO: 1 1 5) and gPMT5-2 (SEQ ID NO: 1 16). 1 minute at ° C, 2 minutes at 72 ° C)
- PMT6 PCR3 'arraF 5'-TGTGGGTGCGATCCTGAG-3' (SEQ ID NO: 1 1 9)
- PMT6 PCR5 'arraF 5'-GCATGTGCCACTGCTAAA-3' (SEQ ID NO: 1 2 1)
- Antibody expression vector pOMexGPA / AbLys digested with Notl made in Example 18 (1)
- minuta YK4 strain ( ⁇ ochl ⁇ ura3 ⁇ adel ⁇ ypsl:: rURA3) by electoporation as controls
- An antibody expression strain was prepared and selected in the same manner as described above. The resulting strain is called 0. miuta Aeon strain. Named.
- PMT5 gene disruption strain 0. minuta AP5 strain, PMT6 gene disruption strain 0. minuta AP6 strain, and 0. rainuta Aeon strain were cultured by the method shown in Example 1 8 (2), and non-reducing Western Analysis was performed.
- the antibody production amount of the culture broth was measured by the method described in Example 21 (3).
- an antibody produced from animal cells (CH0) was used.
- CH0 animal cells
- Example 2 4 0. minutaYY2P2 strain (PMT2 gene split strain), 0. minuta YY2P4 strain (PMT4 gene split strain), and 0. minuta YY2Z strain (control strain),
- Example 3 The 0. minuta-derived active HAC1 gene expression vector pOMexPGHy / Hacl prepared in (1) was digested with Aor51HI and introduced by the above-mentioned electoral position method. Activation of transformant HAC1 gene is introduced by selecting on YPD agar plate medium supplemented with hygromycin B at 50 / g / ral, and after culturing, the genome is extracted, and the active HAC1 gene The introduction was confirmed by PCR according to the method of Example 6.
- the resulting strains were named 0. rainuta YY3P2oraH strain (HAC1 gene-transferred PMT2 gene split strain), 0. minuta YY3P4omH strain (HAC1 gene-transferred PMT4 gene split strain), and 0. minuta YY3ZomH strain (HAC1 gene transfer control strain) did.
- pOMexPGHy digested with Aor51HI was introduced into the 0. minuta YY2Z strain as a control to obtain a 0. minuta YY3ZHy strain (beta-introduced control strain).
- PMT gene split antibody producing strain into which the HAC1 gene was introduced was cultured by the method shown in Example 18 (2), and Western analysis was performed. The results are shown in Fig. 12 and Fig. 14.
- PMT2 gene-strained strain with HAC1 gene introduced 0.minuta YY3P2omH3 ⁇ 4 was secreted with a significant amount of antibody compared to the 0. rainuta YY3ZoraH strain, which is a HACl gene-introduced strain, compared to the 0 .. minuta YY2P2 strain, which is a PMT2 split strain ( Figure 12: Lane 7).
- the PMT4 gene-divided strain into which the HAC1 gene has been introduced is 0.rainuta YY3P4omH strain is a HAC1 gene-introduced strain 0.rainuta YY3ZoraH strain is a PMT4-divided strain 0. minuta YY 2 P4
- the antibody secreted a significant amount ( Figure 14: Lane 6).
- the antibody production amount of the culture broth was measured by the method described in Example 8 and Example 21 (3).
- an antibody produced from animal cells CH0
- the results are shown in Fig. 13 and Fig. 15.
- the 0. minuta YY3P2omH strain which is a ⁇ 2 gene-divided strain into which the HAC1 gene has been introduced, is the control 0. minuta YY3ZomH3 ⁇ 4 (HACl gene-introduced strain), 0. Compared with the strain (vector-introduced control strain), it secreted a significant amount of the associated antibody (Fig. 13: 0. rainuta YY3P2omH strain). In addition, 0.
- minuta YY3P4omH strain which is a PMT4 gene-strained strain into which HAC1 gene has been introduced, is a control 0. rainuta YY3ZomH3 ⁇ 4 (HACl gene-introduced strain), 0, minuta YY2P4 strain (PMT4 gene-strained strain) and 0. Compared with the minuta YY3ZHy strain (vector-introduced control strain), a significant amount of the associated antibody was secreted (Fig. 15: 0. rainuta YY3P4oraH3 ⁇ 4).
- Each PMT gene fragmented antibody-producing strain introduced with the HAC1 gene prepared in Example 25 (1) above was inoculated into 5 ml of B2YP4G medium, 1 platinum loop, inoculated at 27 ° C for 1 day, 0D600 To be 10
- the antibody productivity is highest when the PMT inhibitor concentration is increased by about 0.008 3 ⁇ 41 (stock solution concentration 2.5 mM) as 0D600 increases by 1.
- Minuta YY3P4oraH strain Increased PMT inhibitor by 1 to 0D600
- the antibody productivity was highest when about 0.04 ⁇ was added (stock solution concentration: lOmM). It is considered that glycosylation is strongly suppressed by the combined use of PMT gene expression suppression and PMT inhibitors. In order to suppress the glycosylation of HAC1-introduced strains, it is expected that the production of the aggregate antibody will be further increased by inhibiting the expression of the PMT gene and inhibiting the PMT protein activity in combination with the PMT inhibitor.
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| ES07743912.3T ES2553162T3 (es) | 2006-05-16 | 2007-05-16 | Método de producción de alta secreción de proteínas |
| US12/300,926 US8232377B2 (en) | 2006-05-16 | 2007-05-16 | Method for high-level secretory production of protein |
| EP07743912.3A EP2022855B1 (en) | 2006-05-16 | 2007-05-16 | High secretion production method of protein |
| CN2007800268649A CN101605887B (zh) | 2006-05-16 | 2007-05-16 | 蛋白的高分泌生产方法 |
| AU2007250735A AU2007250735A1 (en) | 2006-05-16 | 2007-05-16 | Method for high-level secretory production of protein |
| JP2008515609A JP5131666B2 (ja) | 2006-05-16 | 2007-05-16 | タンパク質の高分泌生産方法 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009057813A1 (ja) | 2007-10-31 | 2009-05-07 | National Institute Of Advanced Industrial Science And Technology | タンパク質の高分泌生産方法 |
| WO2009143041A1 (en) * | 2008-05-20 | 2009-11-26 | Merck & Co., Inc. | Efficient production of heterologous proteins using mannosyl transferase inhibitors |
| JP2012152211A (ja) * | 2011-01-04 | 2012-08-16 | National Institute Of Advanced Industrial Science & Technology | 糖鎖改変酵母及びそれを用いた糖タンパク質の製造方法 |
| EP2508613A3 (en) * | 2007-04-03 | 2012-11-28 | Oxyrane UK Limited | Glycosylation of molecules |
| JP2013085498A (ja) * | 2011-10-14 | 2013-05-13 | Nippi:Kk | 細胞の分泌活性化方法 |
| WO2014157429A1 (ja) * | 2013-03-26 | 2014-10-02 | 株式会社 ニッピ | タンパク質の製造方法 |
| JP2019507748A (ja) * | 2016-02-12 | 2019-03-22 | アブリンクス エン.ヴェー. | 免疫グロブリン単一可変ドメインの生成方法 |
| JP2022526497A (ja) * | 2019-03-19 | 2022-05-25 | サノフイ | 新規選択マーカーを含む細胞株及びタンパク質製造のためのそれらの使用 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2427486B1 (en) | 2009-05-07 | 2015-02-25 | Novozymes Biopharma DK A/S | Method for purifying albumin |
| US20120059155A1 (en) * | 2009-05-07 | 2012-03-08 | Novozymes Biopharma Dk A/S | Method of Controlling O-Linked Glycosylation of Antibodies |
| EP2771477A4 (en) * | 2011-10-27 | 2015-04-22 | Merck Sharp & Dohme | O-GLYCOSYLATION IN LOW EUKARYOTES |
| CN102965292A (zh) * | 2012-12-10 | 2013-03-13 | 江南大学 | 一种葡萄糖氧化酶分泌增强型菌株及其应用 |
| MX364532B (es) | 2013-07-04 | 2019-04-29 | Glykos Finland Oy | Celulas de hongos filamentosos deficientes de o-manosiltransferasa y metodos de uso de las mismas. |
| AU2015293949B2 (en) | 2014-07-21 | 2019-07-25 | Teknologian Tutkimuskeskus Vtt Oy | Production of glycoproteins with mammalian-like N-glycans in filamentous fungi |
| WO2018178126A1 (en) * | 2017-03-29 | 2018-10-04 | Boehringer Ingelheim Rcv Gmbh & Co Kg | Recombinant host cell with altered membrane lipid composition |
| US20220033870A1 (en) * | 2019-01-31 | 2022-02-03 | Spiber Inc. | Method for producing recombinant protein |
| CN110484572B (zh) * | 2019-08-30 | 2021-04-06 | 浙江工业大学 | 一种提高酿酒酵母橙花叔醇产量的方法 |
| CN113512550B (zh) * | 2021-06-11 | 2022-03-15 | 中国科学院华南植物园 | 茶树CsHAC1基因和蛋白及其应用 |
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| WO2009057813A1 (ja) | 2007-10-31 | 2009-05-07 | National Institute Of Advanced Industrial Science And Technology | タンパク質の高分泌生産方法 |
| WO2009143041A1 (en) * | 2008-05-20 | 2009-11-26 | Merck & Co., Inc. | Efficient production of heterologous proteins using mannosyl transferase inhibitors |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2022855A4 (en) | 2009-12-02 |
| CN101605887B (zh) | 2012-09-05 |
| US20090191587A1 (en) | 2009-07-30 |
| JP5131666B2 (ja) | 2013-01-30 |
| AU2007250735A1 (en) | 2007-11-22 |
| KR20090031359A (ko) | 2009-03-25 |
| CN101605887A (zh) | 2009-12-16 |
| EP2022855B1 (en) | 2015-08-19 |
| JPWO2007132949A1 (ja) | 2009-09-24 |
| EP2022855A1 (en) | 2009-02-11 |
| US8232377B2 (en) | 2012-07-31 |
| ES2553162T3 (es) | 2015-12-04 |
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