WO2019125033A1 - 세포 내 침투능을 갖는 항 stat3 이중특이 항체 및 이를 포함하는 약학적 조성물 - Google Patents
세포 내 침투능을 갖는 항 stat3 이중특이 항체 및 이를 포함하는 약학적 조성물 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
- C07K16/46—Hybrid immunoglobulins
- C07K16/468—Immunoglobulins having two or more different antigen binding sites, e.g. multifunctional antibodies
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
- A61P19/02—Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
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- C—CHEMISTRY; METALLURGY
- 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
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
- C07K16/44—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material not provided for elsewhere, e.g. haptens, metals, DNA, RNA, amino acids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
- G01N33/6872—Intracellular protein regulatory factors and their receptors, e.g. including ion channels
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
- A61K2039/507—Comprising a combination of two or more separate antibodies
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- C07—ORGANIC CHEMISTRY
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- C07K2317/00—Immunoglobulins specific features
- C07K2317/30—Immunoglobulins specific features characterized by aspects of specificity or valency
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- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/30—Immunoglobulins specific features characterized by aspects of specificity or valency
- C07K2317/31—Immunoglobulins specific features characterized by aspects of specificity or valency multispecific
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/50—Immunoglobulins specific features characterized by immunoglobulin fragments
- C07K2317/56—Immunoglobulins specific features characterized by immunoglobulin fragments variable (Fv) region, i.e. VH and/or VL
- C07K2317/565—Complementarity determining region [CDR]
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/60—Immunoglobulins specific features characterized by non-natural combinations of immunoglobulin fragments
- C07K2317/62—Immunoglobulins specific features characterized by non-natural combinations of immunoglobulin fragments comprising only variable region components
- C07K2317/622—Single chain antibody (scFv)
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
- C07K2317/76—Antagonist effect on antigen, e.g. neutralization or inhibition of binding
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
- C07K2317/77—Internalization into the cell
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/90—Immunoglobulins specific features characterized by (pharmaco)kinetic aspects or by stability of the immunoglobulin
- C07K2317/92—Affinity (KD), association rate (Ka), dissociation rate (Kd) or EC50 value
Definitions
- the present invention relates to an anti-STAT3 bispecific antibody having intracellular ability to penetrate, and a pharmaceutical composition containing the same. More particularly, the present invention relates to an anti-STAT3 bispecific antibody having anti- STAT3 bispecific antibody and a pharmaceutical composition comprising the same as an active ingredient.
- Proteins are made from genetic information on DNA through transcription and translation.
- the protein is also a component of the cell and functions as a cytoskeleton.
- many proteins have an activity, and the regulation of the activity of the protein plays a very important role in the cell signaling for controlling the intracellular function.
- Such protein phosphorylation is known to play a role in intracellular signaling by influencing protein activity, structure, binding ability with other proteins, and the like. As molecular biology knowledge develops, new drugs based on these mechanisms are being developed.
- a representative example is a method of inhibiting the activity of a protein binding to the phosphorylated site of such a protein.
- STAT3 signal transducers and activators of transcription 3
- IL interleukin
- IFN-y interferon-gamma
- STAT3 has attracted much attention due to its known as a cancer inducing factor, and actually, abnormal activation of STAT3 has been reported in various cancer tissues.
- over-activated STAT3 promotes cancer cellization of mutated cells by promoting the expression of target genes such as Bcl-XL, c-myc, and cyclin D1 associated with the survival, proliferation and growth of cancer cells. Therefore, many researchers are participating in the development of anticancer drugs that can inhibit the abnormal activation of STAT3. However, the development of drugs that can effectively inhibit STAT3 has not been developed yet.
- inflammatory diseases are collectively referred to as diseases in which an inflammatory reaction appears as a main lesion.
- rheumatoid arthritis is an unidentified chronic inflammatory disease characterized by polyarthritis. Initially, the synovial membrane surrounding the joint is inflamed, but the cartilage and bone are gradually inflated to cause destruction and deformation of the joint, and joints as well as joints, anemia, dry syndrome, subcutaneous nodule, pulmonary fibrosis, It is a disease that can invade the whole body including vasculitis and skin ulcer.
- rheumatoid arthritis The exact cause of rheumatoid arthritis has not yet been elucidated, but autoimmune phenomena are known to be a major mechanism. Autoimmune is the phenomenon of attacking the human body rather than an abnormality of the immune system protecting the human body from the outside. Generally, genetic sweeps, bacterial or viral infections are thought to be the cause of rheumatoid arthritis and are known to be prone to develop after physical or mental stress. It is also reported that the incidence is high in early menopause, which is an example of rheumatoid arthritis being affected by hormones.
- STAT3 signal transducers and activators of transcription 3 plays an important role in NF- ⁇ B as an important transcription factor in autoimmune diseases including rheumatoid arthritis.
- STAT3 is well known to be activated by interleukin-6 (IL-6), a cytokine that mediates the inflammatory response, and STAT3 is closely related to the onset of rheumatoid arthritis (Rheumatology (Oxford), 2015 Jun; 54 (6): 1103-13).
- IL-6 interleukin-6
- Antibodies are glycoproteins present in serum or tissue fluids of all mammals and recognize foreign antigens in vivo.
- the antibody activates effector functions such as phagocytosis of FcR expressing cells, antibody-dependent cytotoxicity, free capacity of the mediator and antigen presenting ability through activation of the complement system and binding to a receptor (FcR) present on the cell surface, It is involved in biologic defense.
- effector functions such as phagocytosis of FcR expressing cells, antibody-dependent cytotoxicity, free capacity of the mediator and antigen presenting ability through activation of the complement system and binding to a receptor (FcR) present on the cell surface, It is involved in biologic defense.
- FcR receptor
- a common antibody can only target extracellular molecules, and there are a number of important targets within the cell for the treatment of disease and the diagnosis of disease. For example, many transcription factors, particularly STAT3, are recognized as the most critical but challenging targets for the treatment of various diseases.
- the present invention has developed an antibody capable of intracellular penetration into which only the activated STAT3 is targeted, thereby solving the conventional limitations as described above, and is useful for treating cancer, inhibiting cancer metastasis, and treating STAT3-related diseases I want to.
- the present invention has been made in order to overcome the above-mentioned conventional limitations, and the present inventors have completed the present invention by developing a bispecific antibody that specifically binds to phosphorylated STAT3 and intracellular DNA and has cell penetration ability.
- the present invention relates to a STAT3 / DNA bispecific antibody comprising a first antigen binding site specifically binding to STAT3 (signal transducer and activator of transcription 3) and a second antigen binding site specifically binding to DNA Or a fragment thereof.
- the present invention provides a method for detecting a first antigen binding site specifically binding to STAT3 (signal transducer and activator of transcription 3) and a second antigen binding site specifically binding to DNA A STAT3 / DNA bispecific antibody or fragment thereof.
- STAT3 signal transducer and activator of transcription 3
- the first antigen binding site specifically binding to STAT3 comprises a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOS: 1 to 3 and a light chain complementarity determining region And a heavy chain complementarity determining region represented by the amino acid sequence of SEQ ID NO:
- CDR light chain complementarity determining region
- the first antigen binding site specifically binding to STAT3 comprises a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOS: 7 to 9 and a light chain complementarity determining region And a heavy chain complementarity determining region represented by the amino acid sequence of SEQ ID NO:
- CDR light chain complementarity determining region
- the first antigen binding site specifically binding to STAT3 comprises a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOs: 13 to 15 and a light chain complementarity determining region And a heavy chain complementarity determining region represented by the amino acid sequence of SEQ ID NO: 18.
- CDR light chain complementarity determining region
- the first antigen binding site specifically binding to STAT3 comprises a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOs: 19 to 21 and a light chain complementarity determining region Chain complementarity determining region represented by the amino acid sequence of SEQ ID NO: 24.
- CDR light chain complementarity determining region
- the first antigen binding site specifically binding to STAT3 comprises a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOS: 25 to 27, Chain complementarity determining region represented by the amino acid sequence of SEQ ID NO: 30.
- CDR light chain complementarity determining region
- the first antigen binding site specifically binding to STAT3 comprises a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOS: 31 to 33, And a heavy chain complementarity determining region represented by the amino acid sequence of SEQ ID NO: 36.
- CDR light chain complementarity determining region
- the first antigen binding site specifically binding to STAT3 comprises a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOs: 37 to 39, And a heavy chain complementarity determining region represented by the amino acid sequence of SEQ ID NO: 42.
- CDR light chain complementarity determining region
- the STAT3 may be a phosphorylated tyrosine residue at position 705.
- the antibody or fragment thereof may be capable of penetrating into cells.
- the fragment may be a fragment selected from the group consisting of diabodies, Fab, Fab ', F (ab) 2, F (ab') 2, Fv and scFv.
- the present invention also provides a polynucleotide encoding said antibody or fragment thereof.
- the present invention also provides a vector comprising the polynucleotide.
- the present invention also provides a cell transformed with said vector.
- the present invention also provides a STAT3-specific detection method comprising contacting the antibody or fragment thereof with a sample and detecting the antibody or fragment thereof.
- the present invention also provides a pharmaceutical composition for the treatment of cancer comprising STAT3 / DNA bispecific antibody or fragment thereof as an active ingredient.
- the present invention provides a pharmaceutical composition for inhibiting cancer metastasis, which comprises an STAT3 / DNA bispecific antibody or fragment thereof as an active ingredient.
- the cancer is selected from the group consisting of bladder cancer, breast cancer, cervical cancer, cholangiocarcinoma, colorectal cancer, colon cancer, endometrial cancer, esophageal cancer, gastric cancer, head and neck cancer, kidney cancer, liver cancer, , Pancreatic cancer, gallbladder cancer, prostate cancer, thyroid cancer, osteosarcoma, rhabdomyosarcoma, synovial sarcoma, Kaposi sarcoma, leiomyosarcoma, malignant fibrous histiocytoma, fibrosarcoma, acute myelogenous leukemia, adult T cell leukemia, chronic myelogenous leukemia, lymphoma , MiT tumors including multiple myeloma, glioblastoma, astrocytoma, melanoma, mesothelioma, Wilm's tumor and clear cell sarcoma (CCS), salivary gland sarcoma (ASPS), salivary
- the present invention also provides a method of treating cancer, comprising administering the pharmaceutical composition to a subject.
- the present invention also provides the use of said pharmaceutical composition for the treatment of cancer.
- the present invention also provides a method for inhibiting cancer metastasis, comprising the step of administering the pharmaceutical composition to a subject.
- the present invention provides the use of the pharmaceutical composition for inhibiting cancer metastasis.
- the present invention also provides a pharmaceutical composition for the treatment of inflammatory diseases, comprising the STAT3 / DNA bispecific antibody or fragment thereof as an active ingredient.
- the inflammatory disease may be rheumatoid arthritis.
- the present invention also provides a method for treating an inflammatory disease, comprising the step of administering the pharmaceutical composition to a subject.
- the present invention also provides the use of the above pharmaceutical composition for the treatment of inflammatory diseases.
- the STAT3 / DNA bispecific antibody according to the present invention can overcome limitations of an antibody drug targeting only proteins existing outside the cell by including a DNA binding site that penetrates into cells and specifically binds to DNA in the nucleus. , STAT3-induced activation of STAT3-induced STAT3-induced STAT3 activation, STAT3-induced STAT3 activation, and STAT3-induced STAT3 activation. Development of therapeutic agents for various related carcinomas, development of drugs capable of inhibiting cancer metastasis induced by activation of STAT3, and development of therapeutic agents without side effects on inflammatory diseases including rheumatoid arthritis associated with activation of STAT3 There will be.
- FIG. 1A is a schematic view of the structure of a double antibody (hereinafter referred to as pSTAT3 antibody) specifically binding to phosphorylated STAT3, and FIG. 1B shows the antibody structure and its sequence of the present invention.
- pSTAT3 antibody a double antibody specifically binding to phosphorylated STAT3
- FIG. 1B shows the antibody structure and its sequence of the present invention.
- FIG. 2 shows the results of SDS-PAGE after the production of the pSTAT3 bispecific antibody of the present invention to confirm the binding ability to phosphorylated STAT3.
- FIG. 3 shows the results of confirming the cell-penetrating ability of the pSTAT3 bispecific antibody of the present invention through immunocytochemical staining.
- FIG. 4 is a graph showing the inhibitory effect of the pSTAT3 bispecific antibody of the present invention on pSTAT3.
- FIGS. 4A and 4C show the activity of STAT3 by treating LPS or TNF ⁇ in mouse macrophage cell line (RAW264.7) and joint bone marrow cells (Synoviocyte)
- FIG. 4C shows the expression level of pSTAT3 and COX-2 in the mouse macrophage cell line treated with LPS and pSTAT3, and the antibody of the present invention And the specific binding to pSTAT3 was confirmed.
- FIG. 5 shows that the expression of the gene was inhibited by the treatment of the pSTAT3 bispecific antibody of the present invention under the condition that the luciferase reporter gene was expressed under the control of STAT3-RE when stimulated with IL-6 in HepG2 liver cancer cell line Results.
- the present inventors have completed the present invention by developing bispecific antibodies that specifically bind to phosphorylated STAT3 and intracellular DNA and have cell-penetrating ability.
- the present invention relates to a STAT3 / DNA bispecific antibody comprising a first antigen binding site specifically binding to STAT3 (signal transducer and activator of transcription 3) and a second antigen binding site specifically binding to DNA Or a fragment thereof.
- the present inventors have produced STAT3 / DNA bispecific antibodies or fragments thereof by way of examples and verified their functions.
- a total of 24 specific antibody sequences binding to the pY705 STAT3 peptide antigen were derived using a human scFv (single-chain variable fragment) library by the phage display method, and the affinity (KD) And 7 antibody candidates with high affinity for pY705 STAT3 were finally selected (see Example 1).
- recombinant antibodies were prepared using three of the seven candidates, and SDA-PAGE was performed to confirm that pSTAT3 can be effectively detected by the antibody prepared using one of the two sequences (See Example 2).
- the intracellular penetrating ability of the antibody was examined by a cell immunochemical staining method in a colon cancer cell line, and it was confirmed that the pSTAT3 antibody comprising the DNA binding domain had an effective intracellular permeability (Example 3).
- the mouse macrophage cell line and joint bone marrow cells were treated with an antibody according to the present invention and the expression level of pSTAT3 was measured by Western blotting to confirm the pSTAT3 inhibitory activity of the antibody, (See Example 4-1).
- the antibody inhibits the expression of the Luciferase reporter gene under IL-6 stimulation conditions using a luciferase reporter gene expressed under the control of STAT3-RE See Example 4-2).
- the term " Antibody " includes immunoglobulin molecules which are immunologically reactive with specific antigens and include both polyclonal antibodies and monoclonal antibodies.
- the term also includes forms produced by genetic engineering such as chimeric antibodies (e. G., Humanized murine antibodies), heterologous binding antibodies (e. G., Bispecific antibodies), bispecific antibodies .
- the antibody is a bispecific antibody, which means an antibody in which one antibody has two binding sites specific to different antigens.
- the antibody of the present invention preferably binds to STAT3 and intracellular DNA, respectively .
- STAT3 / DNA bispecific antibody 'and' STAT3 bispecific scFv antibody 'of the present invention are used most broadly in the present invention, and specific examples thereof are STAT3 Binding site that specifically binds to DNA and a binding site that specifically binds to DNA.
- the antibody has a heavy chain and a light chain, and each heavy and light chain comprises a constant region and a variable region (also known as a " domain ").
- the variable regions of the light and heavy chains include three multifunctional regions called " complementarity-determining regions " (CDRs) and four framework regions.
- the CDRs mainly serve to bind to an epitope of an antigen.
- the CDRs of each chain are typically referred to as CDR1, CDR2, CDR3 starting from the N-terminus and sequentially identified by the chain in which the particular CDR is located. However, not all CDR termini need to be directly involved in antigen binding.
- CDR light chain complementarity determining region
- the first antigen binding site specifically binding to STAT3 includes a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOS: 7 to 9 and an amino acid sequence of SEQ ID NO: And a heavy chain complementarity determining region.
- CDR light chain complementarity determining region
- the first antigen binding site specifically binding to STAT3 includes a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOs: 13 to 15 and a light chain complementarity determining region And a heavy chain complementarity determining region.
- CDR light chain complementarity determining region
- the first antigen binding site specifically binding to STAT3 has a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOs: 19 to 21 and an amino acid sequence represented by the amino acid sequence of SEQ ID NOs: And a heavy chain complementarity determining region.
- CDR light chain complementarity determining region
- the first antigen binding site specifically binding to STAT3 includes a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOS: 25 to 27, and an amino acid sequence of SEQ ID NOS: And a heavy chain complementarity determining region.
- CDR light chain complementarity determining region
- the first antigen binding site specifically binding to STAT3 includes a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOS: 31 to 33 and an amino acid sequence of SEQ ID NOS: 34 to 36 And a heavy chain complementarity determining region.
- CDR light chain complementarity determining region
- the first antigen binding site specifically binding to STAT3 may be selected from the group consisting of a light chain complementarity determining region (CDR) represented by the amino acid sequence of SEQ ID NOs: 37 to 39 and an amino acid sequence represented by the amino acid sequence of SEQ ID NOs: And a heavy chain complementarity determining region.
- CDR light chain complementarity determining region
- the fragment of the present invention may be a fragment selected from the group consisting of diabodies, Fab, Fab ', F (ab) 2, F (ab') 2, Fv and scFv, but is not limited thereto.
- a fragment of an antibody refers to a fragment of an antibody that retains the antigen-specific binding force of the whole antibody.
- the fragment has at least 20%, 50%, 70%, 80% %, 90%, 95% or 100% or more.
- it may be in the form of Fab, F (ab) 2, Fab ', F (ab') 2, Fv, diabody, scFv and the like.
- the fragment of the antibody is not limited in structure or form, but may preferably be scFv, as long as it retains the binding specificity for each of the human-derived STAT3 protein and DNA.
- the scFv according to the present invention has a CDR configuration specific to the above-mentioned STAT3 protein and DNA, or a VH and VL construct.
- the type of the linker is not particularly limited as long as it is known in the art as a linker applicable to scFv.
- the antibody or fragment thereof of the present invention may comprise conservative amino acid substitutions (referred to as conservative variants of the antibody) that do not substantially alter its biological activity.
- STAT3 is a transcription factor that is encoded by the STAT3 gene and is phosphorylated by receptor-associated Janus kinases (JAK) upon stimulation of various cytokines and growth factors to form a homodimer or heterodimer And it acts as a transcription factor that regulates the expression of various genes by moving to the nucleus.
- JNK Janus kinases
- epidermal growth factor EGF
- interleukin-5 IL-5
- interleukin-6 IL-6
- MAPKs mitogen-activated protein kinases
- c-src nonreceptor tyrosine kinases phosphorylate the 727th serine residue.
- Activated STAT3 mediates the expression of various genes in response to cell stimulation and plays an important role in various cell responses such as cell growth and apoptosis.
- the STAT3 / DNA bispecific antibody or the fragment to which the STAT3 / DNA bispecific antibody binds is preferably STAT3 which is phosphorylated at the 705th tyrosine residue.
- the second antigen binding site specifically binding to the DNA is a DNA binding domain of 3E10, which is an autoantibody found in lupus patients (J Autoimmun 1998 Oct; 11 (5): 539- 46. 1998.10), specifically, the 31st aspartic acid of the 'Variant heavy chain' is replaced with asparagine (D31N), but is not limited thereto.
- the present invention also provides a polynucleotide encoding said antibody or fragment thereof.
- " polynucleotide " used in the present invention may be described as an oligonucleotide or a nucleic acid, and may be a DNA molecule (e.g., cDNA or genomic DNA, RNA molecules (e.g., mRNA), a nucleotide analog (E. G., Peptide nucleic acids and non-naturally occurring nucleotide analogs) and hybrids thereof.
- the polynucleotides may be single-stranded ) Or double-stranded.
- the polynucleotide of the present invention is not particularly limited in its sequence as long as it encodes the antibody of the present invention or a fragment thereof.
- Polynucleotides encoding the antibodies or fragments thereof of the present invention can be obtained by methods well known in the art.
- an oligonucleotide synthesis technique well known in the art for example, a polymerase chain reaction (PCR), or the like may be used based on a DNA sequence or a corresponding amino acid sequence encoding a part or all of the heavy chain and light chain of the antibody .
- PCR polymerase chain reaction
- the present invention also provides a vector comprising the polynucleotide.
- the term 'vector' used in the present invention is used for the purpose of cloning or expression of the polynucleotide of the present invention for recombinant production of the antibody or fragment thereof of the present invention.
- a vector, A marker gene, an enhancer element, a promoter, and a transcription termination sequence may preferably be an expression vector, and more preferably, may be a vector comprising a polynucleotide of the present invention operably linked to a regulatory sequence, for example, a promoter.
- the present invention also provides a cell transformed with said vector.
- the cell of the present invention is not particularly limited as long as it is a cell that can be used to express an antibody or a polynucleotide encoding the fragment contained in the expression vector of the present invention.
- Cells (host cells) transformed with an expression vector according to the invention can be transformed into prokaryotic (e. G., E. coli), eukaryotes (e. G., Yeast or other fungi), plant cells (e.
- prokaryotic e. G., E. coli
- eukaryotes e. G., Yeast or other fungi
- plant cells e.
- a mammalian cell, an animal cell for example, a human cell, a monkey cell, a hamster cell, a rat cell, a mouse cell, an insect cell or a hybridoma derived therefrom, May be cells derived from mammals, including humans.
- " transformation " as used herein refers to a modification of the genotype of a host cell by the introduction of a foreign polynucleotide, and regardless of the method used for transformation, the foreign polynucleotide is introduced into the host cell .
- the exogenous polynucleotide introduced into the host cell may be maintained integrated or maintained in the genome of the host cell, but the present invention encompasses both.
- the recombinant expression vector capable of expressing the STAT3 / DNA bispecific antibody or fragment thereof according to the present invention can be produced by a method known in the art, for example, transient transfection, microinjection, transduction, Cell fusion, calcium phosphate precipitation, liposome-mediated transfection, DEAE dextran-mediated transfection, polybrene-mediated transfection, May be transformed into a cell for production of an antibody or a fragment thereof by electroporation, a gene gun, and a known method for introducing a nucleic acid into a cell, But is not limited to.
- the present invention also relates to a method for producing a polypeptide comprising the steps of culturing the above cells under a condition that a polynucleotide is expressed to produce a polypeptide comprising a light chain and a heavy chain variable region and recovering the polypeptide from the cell or a culture medium in which the polypeptide is cultured And a method for producing the STAT3 / DNA bispecific antibody or fragment thereof.
- the culture of the cells may vary depending on the type of the cells, and may be appropriately selected and controlled by those skilled in the art.
- the antibody molecule may be accumulated in the cytoplasm of a cell, secreted from the cell, targeted by a suitable signal sequence to a periplasm or extracellular medium (supernatant), and labeled with a periplasmic or extracellular medium . It is also desirable to refold the engineered antibody molecules using methods well known to those of ordinary skill in the art and to have functional conformation. The recovery of the polypeptide may vary depending on the characteristics of the produced polypeptide and the characteristics of the cells, and those skilled in the art can appropriately select and control the polypeptide.
- the present invention also provides a STAT3-specific detection method comprising contacting the antibody or a fragment thereof with a sample and detecting the antibody or fragment thereof.
- a person skilled in the art can appropriately select a known method for detecting a protein using an antibody and prepare a sample suitable for a selected method.
- the sample may also be a cell or tissue, blood, whole blood, serum, plasma, saliva, cerebrospinal fluid, etc. obtained by biopsy or the like collected from a subject to be diagnosed as cancer or metastasis.
- the method for detecting a protein using the antibody is not limited to the above examples, and examples thereof include Western blot, immunoblot, dotslab, immunohistochemistry, enzyme immunoassay (ELISA), radioimmunoassay , Competitive binding assays, and immunoprecipitation.
- the antibody or fragment thereof can generally be labeled with a detectable moiety for its detection.
- enzymatic labels are luciferase such as Drosophila luciferase and bacterium luciferase, luciferin, luciferase such as luciferase, and luciferase such as luciferase, which may be labeled with, for example, radioactive isotopes or fluorescent labels, Peroxidase such as 2,3-dihydropthalazine dione, malate dehydrogenase, urase, horseradish peroxidase (HRPO), alkaline phosphatase,? -Galactosidase, (E.
- Techniques for conjugating enzymes to antibodies can be conjugated directly or indirectly to the antibodies using known techniques.
- the antibody can be conjugated to biotin and any label belonging to the three broad categories mentioned above can be conjugated to avidin, or vice versa. Biotin selectively binds to avidin, and thus this label can be conjugated to the antibody in this indirect manner.
- the present invention also provides a pharmaceutical composition for the treatment of cancer comprising STAT3 / DNA bispecific antibody or fragment thereof as an active ingredient.
- the present invention provides a pharmaceutical composition for inhibiting cancer metastasis, which comprises an STAT3 / DNA bispecific antibody or fragment thereof as an active ingredient.
- " cancer " which is a disease to be treated in the present invention refers to an aggressive characteristic that the cell disregards normal growth limit and divides and grows, invasive characteristics penetrating into surrounding tissues, It is a generic term for diseases caused by cells that have spread metastatic characteristics.
- cancer metastasis " refers to a phenomenon that is a result of progression of cancer, and most of the signs attributed to cancer are not primary circulation, It is said to be caused by obstacle.
- Cancer metastasis is caused by migration within the tissues of cells, migration into the vasculature such as blood vessels such as arteries, veins, or lymphatic vessels, implantation in other organs, multiplication and tumor tissue formation.
- important cell movements include an extracellular structure that increases adhesiveness to specific cells by lowering adhesion between homologous cells, an enzyme that induces the destructiveness of the structure that maintains the integrity of tissues such as basement membrane On the cell surface.
- the cancer is preferably selected from the group consisting of bladder cancer, breast cancer, cervical cancer, cholangiocarcinoma, colorectal cancer, colorectal cancer, endometrial cancer, esophageal cancer, gastric cancer, head and neck cancer, kidney cancer, liver cancer, , Gallbladder cancer, prostate cancer, thyroid cancer, osteosarcoma, rhabdomyosarcoma, luberal sarcoma, Kaposi sarcoma, leiomyosarcoma, malignant fibrous histiocytoma, fibrosarcoma, acute myelogenous leukemia, adult T cell leukemia, chronic myelogenous leukemia, lymphoma, And at least one selected from the group consisting of myeloma, glioblastoma, astrocytoma, melanoma, mesothelioma, Wilm's tumor and MiT tumors including clear cell sarcoma (CCS),
- the present invention also provides a pharmaceutical composition for the treatment of inflammatory diseases, comprising the STAT3 / DNA bispecific antibody or fragment thereof as an active ingredient.
- " inflammatory disease " which is a disease to be treated in the present invention, refers to a disease having an inflammatory response as a main lesion, and may include various diseases associated therewith.
- the inflammatory disease is preferably rheumatoid arthritis .
- the rheumatoid arthritis is an inflammatory disease whose cause has not been precisely identified.
- the inflammation caused by the synovial membrane that initially encircles the joint gradually spreads to surrounding cartilage and bone, resulting in joint destruction and deformation.
- STAT3 and its associated signaling pathway in the pathogenesis of rheumatoid arthritis has been reported in various studies in the field.
- the pharmaceutical composition according to the present invention may include a STAT3 / DNA bispecific antibody as an active ingredient, and may further include a pharmaceutically acceptable carrier.
- pharmaceutically acceptable carriers are those conventionally used in the field of application and include, but are not limited to, saline, sterile water, Ringer's solution, buffered saline, cyclodextrin, dextrose solution, maltodextrin solution, glycerol, ethanol, And may further contain other conventional additives such as antioxidants and buffers as needed.
- Suitable pharmaceutically acceptable carriers and formulations can be suitably formulated according to the respective ingredients using the methods disclosed in Remington's reference.
- the pharmaceutical composition of the present invention is not particularly limited to a formulation, but may be formulated into injections, inhalants, external skin preparations, and the like.
- the pharmaceutical composition of the present invention can be administered orally or parenterally (for example, intravenously, subcutaneously, intraperitoneally or topically) according to the intended method, but preferably can be administered orally, Depends on the condition and the weight of the patient, the degree of the disease, the type of the drug, the administration route and time, but can be appropriately selected by those skilled in the art.
- the pharmaceutical composition of the present invention is administered in a pharmaceutically effective amount.
- pharmaceutically effective amount means an amount sufficient to treat or diagnose a disease at a reasonable benefit / risk ratio applicable to medical treatment or diagnosis, and the effective dose level will depend on the type of disease, severity, The activity of the compound, the sensitivity to the drug, the time of administration, the route of administration and the rate of release, the duration of the treatment, factors including co-administered drugs, and other factors well known in the medical arts.
- the pharmaceutical composition according to the present invention may be administered as an individual therapeutic agent or in combination with other therapeutic agents, sequentially or concurrently with conventional therapeutic agents, and may be administered singly or in multiple doses. It is important to take into account all of the above factors and to administer the amount in which the maximum effect can be obtained in a minimal amount without side effects, which can be easily determined by those skilled in the art.
- the effective amount of the pharmaceutical composition of the present invention may vary depending on the age, sex, condition, body weight, the degree of absorption of the active ingredient in the body, the rate of inactivation and the excretion rate, the type of disease, 0.001 to 150 mg, preferably 0.01 to 100 mg per kg of body weight, may be administered daily or every other day, or one to three divided doses per day.
- the dosage may be varied depending on the route of administration, the severity of obesity, sex, weight, age, etc. Therefore, the dosage is not limited to the scope of the present invention by any means.
- the present invention provides a method of treating cancer comprising administering the pharmaceutical composition to a subject.
- the present invention provides a method for inhibiting cancer metastasis comprising administering the pharmaceutical composition to a subject.
- the present invention provides a method for treating an inflammatory disease comprising administering the pharmaceutical composition to a subject.
- " refers to a subject in need of treatment for a disease, and more specifically refers to a human or non-human primate, mouse, rat, dog, cat, It means mammals.
- the present invention provides the use of the above pharmaceutical composition for treating cancer.
- the present invention provides the use of the pharmaceutical composition for inhibiting cancer metastasis.
- the present invention provides the use of the above pharmaceutical composition for the treatment of inflammatory diseases.
- a human scFv (single-chain variable fragment) library provided from the Antibody Detection Support Team of the New Drug Development Support Center, Osong, Korea, was used and phage display was performed using pY705 STAT3 peptide as an antigen.
- the immobilized antibody on the solid surface was mixed with a phage antibody library to induce antibody-antigen binding, and unbound phages were washed away.
- the phage bound to the antigen is eluted using an alkaline / acidic pH solution or a competitor peptide, and then the E. coli is infected to amplify the eluted phage. And used for round panning to concentrate specific antibodies.
- 24 pY705 STAT3 peptide-specific antibody sequences were finally obtained.
- the present inventors made a recombinant double antibody specific for phosphorylated STAT3 (pY705 STAT3) using the three candidate antibody sequences selected in Example 1 above.
- the double antibody produced in the present invention has a structure in which the antigen binding site at one end binds to phosphorylated STAT3 and the other antigen binding site binds to DNA in the nucleus of the cell as shown in Fig. More specifically, as shown in FIG. 1B, scFv (STAT3 scFv) binding to phosphorylated STAT3 and scFv (3E10 scFv) binding to DNA in the intracellular space penetrate into the nucleus are linked with a linker in the form of a swivel ).
- the 3E10 scFv is based on the DNA binding domain of an autoantibody found in lupus patients and is further characterized by the 31st aspartic acid of the 'Variant heavy chain' reported to be further enhanced in intracellular penetration efficiency ) Was replaced with asparagine (D31N).
- pSTAT3 antibody phosphorylated STAT3 bispecific antibody
- 100 ⁇ g of the recombinant pSTAT3 antibody-expressing plasmid DNA was introduced into CHO-K1 80M cells and expressed to obtain the corresponding antibody.
- 19.5 ⁇ l of each sample was loaded on a 4-20% acrylamide gel and subjected to SDS-PAGE To examine whether the antibody targets and binds phosphorylated STAT3.
- pSTAT3 antibody STAT3-D31N
- pSTAT3-C4 pSTAT3 double antibody
- STAT3 protein was labeled (STAT3 staining) by immunocytochemistry using each of the above pSTAT3 antibodies, and PI staining for nucleus was stained by PI staining.
- Example 2 From the results of Example 2, it was confirmed that the pSTAT3 antibody of the present invention binds efficiently to pSTAT3. Further, to examine the inhibitory effect of the antibody against pSTAT3, Western blotting was performed to observe the protein expression level.
- the mouse macrophage cell line RAW264.7 and the articular bone marrow cell Synoviocyte were treated with LPS (lipopolysaccharide) or TNF ⁇ to activate pSTAT3, and then the pSTAT3 antibody of the present invention was administered at 20, 50, 100 or 10, 20, 50 ug / ml) and the expression level of pSTAT3 protein was observed.
- the pSTAT3 antibody (RSmu) was treated, the expression level of pSTAT3 was decreased in proportion to the treatment concentration in both cells.
- the pSTAT3 antibody according to the present invention effectively inhibits the pSTAT3 protein activated by LPS or TNF [alpha].
- RAW264.7 cells were treated with LPS alone or with 50 ug of LPS and pSTAT3 antibody, and the level of COX-2 expression induced by NF- ⁇ B signaling was observed with pSTAT3.
- the expression of pSTAT3 protein was decreased while the expression level of COX-2 was not changed, as shown in FIG. 4C, confirming that the pSTAT3 antibody of the present invention did not affect the COX-2 protein.
- Example 4-1 the present inventors examined whether the pSTAT3 antibody of the present invention can inhibit STAT-RE (Response element) mediated gene expression by inhibiting STAT3 function.
- STAT-RE Response element
- a luciferase reporter gene vector expressed under the control of STAT3-RE was transfected into HepG2 liver cancer cell line for 48 hours, and the pSTAT3 antibody of the present invention was treated for 1 hour, and 100 nM of IL- 6 was treated for 24 hours. Expression levels of the STAT3-RE mediated luciferase gene by IL-6 stimulation were then measured.
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Abstract
Description
| ID | KD (nM) |
| C4 | 4 |
| 3A10 | 5 |
| C6 | 6 |
| H9 | 12 |
| A12 | 55 |
| F11 | 55 |
| A10 | 85 |
Claims (21)
- STAT3(Signal transducer and activator of transcription 3)에 특이적으로 결합하는 제 1 항원 결합 부위 및 DNA에 특이적으로 결합하는 제 2 항원 결합 부위를 포함하는, STAT3/DNA 이중 특이적 항체 또는 그 단편.
- 제1항에 있어서,상기 STAT3에 특이적으로 결합하는 제 1 항원 결합 부위는 서열번호 1 내지 3의 아미노산 서열로 표시되는 경쇄 상보성 결정영역(complementarity determining region, CDR) 및 서열번호 4 내지 6의 아미노산 서열로 표시되는 중쇄 상보성 결정영역을 포함하는 것을 특징으로 하는, 이중 특이적 항체 또는 그 단편.
- 제1항에 있어서,상기 STAT3에 특이적으로 결합하는 제 1 항원 결합 부위는 서열번호 7 내지 9의 아미노산 서열로 표시되는 경쇄 상보성 결정영역(complementarity determining region, CDR) 및 서열번호 10 내지 12의 아미노산 서열로 표시되는 중쇄 상보성 결정영역을 포함하는 것을 특징으로 하는, 이중 특이적 항체 또는 그 단편.
- 제1항에 있어서,상기 STAT3에 특이적으로 결합하는 제 1 항원 결합 부위는 서열번호 13 내지 15의 아미노산 서열로 표시되는 경쇄 상보성 결정영역(complementarity determining region, CDR) 및 서열번호 16 내지 18의 아미노산 서열로 표시되는 중쇄 상보성 결정영역을 포함하는 것을 특징으로 하는, 이중 특이적 항체 또는 그 단편.
- 제1항에 있어서,상기 STAT3에 특이적으로 결합하는 제 1 항원 결합 부위는 서열번호 19 내지 21의 아미노산 서열로 표시되는 경쇄 상보성 결정영역(complementarity determining region, CDR) 및 서열번호 22 내지 24의 아미노산 서열로 표시되는 중쇄 상보성 결정영역을 포함하는 것을 특징으로 하는, 이중 특이적 항체 또는 그 단편.
- 제1항에 있어서,상기 STAT3에 특이적으로 결합하는 제 1 항원 결합 부위는 서열번호 25 내지 27의 아미노산 서열로 표시되는 경쇄 상보성 결정영역(complementarity determining region, CDR) 및 서열번호 28 내지 30의 아미노산 서열로 표시되는 중쇄 상보성 결정영역을 포함하는 것을 특징으로 하는, 이중 특이적 항체 또는 그 단편.
- 제1항에 있어서,상기 STAT3에 특이적으로 결합하는 제 1 항원 결합 부위는 서열번호 31 내지 33의 아미노산 서열로 표시되는 경쇄 상보성 결정영역(complementarity determining region, CDR) 및 서열번호 34 내지 36의 아미노산 서열로 표시되는 중쇄 상보성 결정영역을 포함하는 것을 특징으로 하는, 이중 특이적 항체 또는 그 단편.
- 제1항에 있어서,상기 STAT3에 특이적으로 결합하는 제 1 항원 결합 부위는 서열번호 37 내지 39의 아미노산 서열로 표시되는 경쇄 상보성 결정영역(complementarity determining region, CDR) 및 서열번호 40 내지 42의 아미노산 서열로 표시되는 중쇄 상보성 결정영역을 포함하는 것을 특징으로 하는, 이중 특이적 항체 또는 그 단편.
- 제1항에 있어서,상기 STAT3는 705번째 티로신 잔기가 인산화된 것을 특징으로 하는, 이중 특이적 항체 또는 그 단편.
- 제1항에 있어서,상기 항체 또는 그 단편은 세포 내로의 침투능을 갖는 것을 특징으로 하는, 이중 특이적 항체 또는 그 단편.
- 제1항에 있어서,상기 단편은 디아바디, Fab, Fab′, F(ab)2, F(ab′)2, Fv 및 scFv로 이루어진 군에서 선택되는 단편인 것을 특징으로 하는, 이중 특이적 항체 또는 그 단편.
- 제1항의 항체 또는 그 단편을 암호화하는, 폴리뉴클레오티드.
- 제12항의 폴리뉴클레오티드를 포함하는, 벡터.
- 제13항의 벡터로 형질전환된, 세포.
- (a) 제14항의 세포를 폴리뉴클레오티드가 발현되는 조건하에서 배양하는 단계;(b) 상기 세포로부터 경쇄 및 중쇄가변영역을 포함하는 폴리펩티드를 생산하는 단계; 및(c) 상기 세포 또는 이를 배양한 배양 배지로부터 상기 폴리펩티드를 회수하는 단계를 포함하는, STAT3/DNA 이중 특이적 항체 또는 그 단편의 생산방법.
- 제1항의 항체 또는 그 단편을 시료와 접촉시키는 단계 및 상기 항체 또는 그 단편을 검출하는 단계를 포함하는, STAT3 특이적 검출 방법.
- 제1항의 항체 또는 그 단편을 유효성분으로 포함하는, 암 치료용 약학적 조성물.
- 제1항의 항체 또는 그 단편을 유효성분으로 포함하는, 암 전이 억제용 약학적 조성물.
- 제17항 또는 제18항에 있어서,상기 암은 방광암, 유방암, 자궁경부암, 담관암종, 결장직장암, 대장암, 자궁내막암, 식도암, 위암, 두경부암, 신장암, 간암, 폐암, 비인두암, 난소암, 췌장암, 담낭암, 전립선암, 갑상선암, 골육종, 횡문근육종, 윤활막 육종, 카포시(Kaposi) 육종, 평활근육종, 악성 섬유성 조직구종, 섬유육종, 급성 골수성 백혈병, 성인 T 세포 백혈병, 만성 골수성 백혈병, 림프종, 다발성 골수종, 교모세포종, 성상세포종, 흑색종, 중피종, 윌름 종양, 및 투명 세포 육종(CCS), 포상 연부 육종(ASPS) 및 전위-연관 신세포 암종을 포함하는 MiT 종양으로 이루어진 군으로부터 선택되는 하나 이상인 것을 특징으로 하는, 약학적 조성물.
- 제1항의 항체 또는 그 단편을 유효성분으로 포함하는, 염증성 질환 치료용 약학적 조성물.
- 제20항에 있어서,상기 염증성 질환은 류마티스 관절염(rheumatoid arthritis)인 것을 특징으로 하는, 약학적 조성물.
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| CN201880082376.8A CN111699002B (zh) | 2017-12-22 | 2018-12-21 | 抗stat3双特异性抗体及包含其的药学组合物 |
| EP18891620.9A EP3730150A4 (en) | 2017-12-22 | 2018-12-21 | ANTI-STAT3 BISPECIFIC ANTIBODY WITH CELL-PENETRATING ABILITY AND THIS PHARMACEUTICAL COMPOSITION |
| JP2020555000A JP7130274B2 (ja) | 2017-12-22 | 2018-12-21 | 細胞内浸透能を有する抗stat3二重特異性抗体およびこれを含む薬学的組成物 |
| US16/907,485 US11186631B2 (en) | 2017-12-22 | 2020-06-22 | Anti-STAT3 bispecific antibody having cell-penetrating ability, and pharmaceutical composition containing same |
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| KR10-2017-0178053 | 2017-12-22 | ||
| KR10-2017-0178084 | 2017-12-22 | ||
| KR10-2017-0178039 | 2017-12-22 | ||
| KR1020170178053A KR20190076333A (ko) | 2017-12-22 | 2017-12-22 | 세포 내 침투능을 갖는 항 stat3 이중특이 항체를 포함하는, 암 전이 억제용 약학적 조성물 |
| KR1020170178084A KR20190076354A (ko) | 2017-12-22 | 2017-12-22 | 세포 내 침투능을 갖는 항 stat3 이중특이 항체를 포함하는, 염증성 질환 치료용 약학적 조성물 |
| KR1020170178028A KR102526768B1 (ko) | 2017-12-22 | 2017-12-22 | 세포 내 침투능을 갖는 항 stat3 이중특이 항체 |
| KR1020170178039A KR20190076329A (ko) | 2017-12-22 | 2017-12-22 | 세포 내 침투능을 갖는 항 stat3 이중특이 항체를 포함하는, 암 치료용 약학적 조성물 |
| KR10-2017-0178028 | 2017-12-22 |
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| WO2020262762A1 (ko) * | 2019-06-25 | 2020-12-30 | (주)로피바이오 | 항 stat3 특이 항체 및 이를 포함하는 약학적 조성물 |
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| US9283272B2 (en) * | 2012-03-30 | 2016-03-15 | The United States Of America As Represented By The Department Of Veterans Affairs | Targeting intracellular target-binding determinants with intracellular antibodies |
| EP2981551B1 (en) * | 2013-02-20 | 2020-06-03 | Valerion Therapeutics, LLC | Methods and compositions for treatment of pompe disease |
| CA2995673A1 (en) * | 2014-08-27 | 2016-03-03 | Valerion Therapeutics, Llc | Internalizing moieties for treatment of cancer |
| AU2016206475B2 (en) | 2015-01-16 | 2021-11-04 | City Of Hope | Cell penetrating antibodies |
| US10383945B2 (en) * | 2015-02-18 | 2019-08-20 | The United States of America as Represented by the Department of Verterans Affairs | Methods for DNA-dependent targeting of a cell permeant antibody |
| TW201718023A (zh) * | 2015-08-06 | 2017-06-01 | 世代好公司 | 細胞滲透性蛋白質-抗體結合物及使用方法 |
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2018
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- 2018-12-21 EP EP18891620.9A patent/EP3730150A4/en not_active Withdrawn
- 2018-12-21 CN CN201880082376.8A patent/CN111699002B/zh active Active
- 2018-12-21 JP JP2020555000A patent/JP7130274B2/ja active Active
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- 2020-06-22 US US16/907,485 patent/US11186631B2/en active Active
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| KR20090092201A (ko) * | 2008-02-26 | 2009-08-31 | 이화여자대학교 산학협력단 | 인산화된 stat3 단백질에 특이적으로 결합하는 항체 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020262762A1 (ko) * | 2019-06-25 | 2020-12-30 | (주)로피바이오 | 항 stat3 특이 항체 및 이를 포함하는 약학적 조성물 |
| EP3992207A4 (en) * | 2019-06-25 | 2023-07-19 | Rophibio, Inc. | ANTI-STAT3 SPECIFIC ANTIBODY AND PHARMACEUTICAL COMPOSITION COMPRISING IT |
| US12116403B2 (en) | 2019-06-25 | 2024-10-15 | Rophibio, Inc. | Anti-STAT3 specific antibody and the pharmaceutical composition comprising thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021509022A (ja) | 2021-03-18 |
| CN111699002B (zh) | 2024-06-28 |
| US20200369756A1 (en) | 2020-11-26 |
| CN111699002A (zh) | 2020-09-22 |
| JP7130274B2 (ja) | 2022-09-05 |
| US11186631B2 (en) | 2021-11-30 |
| EP3730150A1 (en) | 2020-10-28 |
| EP3730150A4 (en) | 2021-10-06 |
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