WO1998037913A1 - Inhibiteurs d'activation de lymphocytes - Google Patents
Inhibiteurs d'activation de lymphocytes Download PDFInfo
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- WO1998037913A1 WO1998037913A1 PCT/JP1998/000831 JP9800831W WO9837913A1 WO 1998037913 A1 WO1998037913 A1 WO 1998037913A1 JP 9800831 W JP9800831 W JP 9800831W WO 9837913 A1 WO9837913 A1 WO 9837913A1
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Classifications
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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
- A61K39/395—Antibodies; Immunoglobulins; Immune serum, e.g. antilymphocytic serum
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/02—Immunomodulators
- A61P37/06—Immunosuppressants, e.g. drugs for graft rejection
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/20—Immunoglobulins specific features characterized by taxonomic origin
- C07K2317/24—Immunoglobulins specific features characterized by taxonomic origin containing regions, domains or residues from different species, e.g. chimeric, humanized or veneered
-
- 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
- C07K2317/73—Inducing cell death, e.g. apoptosis, necrosis or inhibition of cell proliferation
- C07K2317/734—Complement-dependent cytotoxicity [CDC]
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
Definitions
- the present invention relates to a novel lymphocyte activation inhibitor.
- infectious microorganisms such as viruses, bacteria, molds, and parasites
- infectious microorganisms such as viruses, bacteria, molds, and parasites
- Lymphocyte cells are mainly responsible for immunity in living organisms. Lymphocyte cells are roughly classified into T lymphocyte cells (T cells) and B lymphocyte cells (B cells) according to their functions. T cells are considered to have antigen-presenting ability and cytotoxicity, and B cells are considered to have antibody-producing ability. These two types of lymphocytes are all derived from the same blood stem cells and are released into the peripheral blood after repeated differentiation in the bone marrow or other organs or by the action of growth factors. .
- hematopoietic stem cells differentiate into pre-T cells in the bone marrow, then migrate to the thymus, and further repeat differentiation to become mature T cells. After that, it is activated by the stimulation of the antigen, and becomes an activated T cell having a proliferative ability or cytotoxicity.
- B cells hematopoietic stem cells in the bone marrow undergo pro-B cells and pre-B cells by stimulating site cytokines such as I-1, IL-2, IL-4, and IL-6. Differentiates into mature B cells and receives additional antigen stimulation And finally become plasma cells capable of producing antibodies. Therefore, final activation is essential for the lymphocyte to exert its function.
- immunity is intended to protect the living body from foreign foreign substances, so a mechanism that recognizes foreign substances (non-self) and self by a sophisticated mechanism, and reacts with only non-self as an antigen It has become.
- an autoimmune disease occurs when this mechanism breaks down for some reason and the self is recognized as an antigen.
- a condition in which an immune response to non-self occurs excessively or in an inappropriate manner, resulting in tissue damage is called allergy.
- lymphocyte activation Numerous experiments and studies are elucidating the pathway from lymphocyte activation to the disease caused by it, and a number of therapeutic agents for diseases involving lymphocyte activation are being developed.
- non-steroids such as aspirin are used for rheumatoid arthritis, systemic erythematosus, and scleroderma.
- Anti-inflammatory drugs ⁇ Steroids, immunosuppressants such as azathioprine have been used.
- cyclosporin azathioprine, mizoribine, etc. are mainly used for kidney transplantation and bone marrow transplantation.
- Immunosuppressants have been used.
- antiallergic drugs antihistamine drugs, chemical mediator release inhibitors that suppress release of chemical substances that cause allergies, and the like are used.
- non-steroid anti-inflammatory drugs such as ⁇ steroids, anti-histamine drugs, and chemical mediator release inhibitors are all active against the activation of lymphocytes, which cause this disease. Does not act at all and is merely a symptomatic treatment that suppresses inflammation, so it does not fundamentally treat this disease
- anti-HM1.24 antibody a monoclonal ⁇ -nal antibody obtained by immunizing mice with human myeloma cells (Blood (1994)). 84, 1922-1930).
- anti-HM1.24 antibody When anti-HM1.24 antibody was administered to mice transplanted with human myeloma cells, this antibody specifically accumulated in tumor tissues (Kosaka, Masaaki et al., Japanese Clinical (1995) 53, 627-635). It has been suggested that the anti-HM1.24 antibody can be applied to the diagnosis of tumor localization by radioisotope labeling and missile therapy such as radioimmunotherapy. However, it was not known that the anti-HM1.24 antibody was involved in suppressing the activation of lymphocytes.
- an object of the present invention is to provide a lymphocyte activation inhibitor. It is to provide.
- the present inventors analyzed FCM (flow cytometry) using an anti-HM1.24 antibody (Goto, T. et al. Blood (1994) 84.1922-1930).
- FCM flow cytometry
- anti-HM1.24 antibody Goto, T. et al. Blood (1994) 84.1922-1930.
- the present invention provides a lymphocyte activation inhibitor comprising, as an active ingredient, an antibody that specifically binds to a protein having an amino acid sequence represented by SEQ ID NO: 1.
- the present invention also provides a T cell or B cell activation inhibitor comprising, as an active ingredient, an antibody that specifically binds to a protein having an amino acid sequence represented by SEQ ID NO: 1. .
- the present invention also provides a lymphocyte activation inhibitor comprising, as an active ingredient, a monoclonal antibody that specifically binds to a protein having an amino acid sequence represented by SEQ ID NO: 1. I do.
- the present invention also relates to activation of a lymphocyte, which comprises, as an active ingredient, an antibody having a human antibody constant region, which specifically binds to a protein having an amino acid sequence represented by SEQ ID NO: 1. Provide an inhibitor.
- the present invention also provides a lymphocyte activation inhibitor comprising an anti-HM1.24 antibody as an active ingredient.
- the present invention also provides a lymphocyte activation inhibitor containing a chimeric antibody or a humanized antibody as an active ingredient.
- the present invention also provides a lymphocyte activation inhibitor comprising, as an active ingredient, a chimeric anti-HM1.24 antibody or a humanized anti-HM1.24 antibody.
- the present invention also provides a lymphocyte activation inhibitor comprising, as an active ingredient, an antibody that specifically binds to an epitope recognized by an anti-HM1.24 antibody.
- the present invention also provides a preventive / therapeutic agent for a lymphocyte activation-related disease, which comprises, as an active ingredient, an antibody that specifically binds to a protein having an amino acid sequence represented by SEQ ID NO: 1. provide.
- the present invention relates to a self-immune disease, a rejection reaction at the time of transplantation of an organ or the like, which contains, as an active ingredient, an antibody that specifically binds to a protein having an amino acid sequence represented by SEQ ID NO: 1.
- a self-immune disease a rejection reaction at the time of transplantation of an organ or the like, which contains, as an active ingredient, an antibody that specifically binds to a protein having an amino acid sequence represented by SEQ ID NO: 1.
- SEQ ID NO: 1 Provide allergy prevention and treatment agents.
- FIG. 1 shows that anti-HM1.24 antibody suppresses antibody production from B cells upon SAC stimulation.
- FIG. 2 shows a histogram obtained by FCM analysis of PHA-stimulated T cells using an anti-HM1.24 antibody.
- FIG. 3 shows a histogram when activated T cells were subjected to FCM analysis with an anti-HM1.24 antibody.
- FIG. 4 shows that anti-HM1.24 antibody suppresses the T cell blastogenesis response induced by PHA.
- the hybridoma producing the antibody used in the present invention can be basically produced as follows using a known technique. That is, use HM1.24 antigen protein or cells expressing HM1.24 antigen as sensitizing antigen This is then immunized according to a conventional immunization method, and the obtained immune cells are fused with a known parent cell by a conventional cell fusion method, and a monoclonal antibody is produced by a normal screening method. It can be produced by screening cells.
- a monoclonal antibody may be prepared as follows.
- HM1.24 antigen-expressing cells which are sensitizing antigens for obtaining antibodies, include human multiple myeloma cell lines KP ⁇ 2 (Japanese Patent Laid-Open No. 7-236475) and KPC-32 (Goto, T. et al., Jpn. J. Clin. Hematol. (1991) 32, 1400) can be used.
- the sensitizing antigen a protein having the amino acid sequence shown in SEQ ID NO: 1 or a peptide or polypeptide containing an epitope recognized by the anti-HM1.24 antibody can be used.
- the cDNA encoding the protein having the amino acid sequence shown in SEQ ID NO: 1 used as the sensitizing antigen was inserted between the Xbal cleavage sites of the pUC19 vector, and the plasmid pRS38- Prepared as pUC19.
- Escherichia coHDH5 (pRS38-pUC19) has been internationally deposited under the Budapest Agreement under the accession number FERM BP-4434 (see JP-A-7-196694).
- a peptide or polypeptide containing an epitope recognized by the anti-HM1.24 antibody can be prepared by a genetic engineering technique.
- the mammal to be immunized with the sensitizing antigen is not particularly limited, but is preferably selected in consideration of compatibility with the parent cell used for cell fusion. Rodents such as mice, rats, and hamsters are used. Immunization of an animal with a sensitizing antigen is performed according to a known method. For example, as a general method, the sensitizing antigen is injected intraperitoneally or subcutaneously into a mammal. Specifically, sensitizing antigen
- the animals Dilute and suspend in a suitable amount with PBS (Phosphate-Buffered Saline) or physiological saline, etc., and mix a normal adjuvant, such as Freund's complete adjuvant, if necessary, emulsify and suspend
- a normal adjuvant such as Freund's complete adjuvant
- the animals are dosed several times every 4-21 days.
- an appropriate carrier can be used at the time of immunization with a sensitizing antigen.
- immune cells are removed from the mammal and subjected to cell fusion.
- Preferred immune cells to be subjected to cell fusion include spleen cells in particular.
- Mammalian myeloma cells as the other parent cells fused with the immune cells are already known in various cell lines, for example, P3X63Ag8.653 (J. Immnol. (1979) 123 : 1548-1550), P3X63Ag8U.1 (Current Topics in Microbiology and Immunology (1978) 81: 1-7), NS -1 (Kohler.G. And Milstein, C. Eur. J. Immunol. (1976) 6 : 5 11-519), MPC-11 (Margulies. DH et al., Cell (1976) 8: 405-415), SP2 / 0 (Shulman. M.
- the cell fusion of the immune cells and myeloma cells is basically performed by a known method, for example, the method of Milstein et al. (Kohler. G. and Milstein,
- the cell fusion is performed, for example, in a normal nutrient culture in the presence of a cell fusion promoter.
- fusion promoters include
- Polyethylene glycol (PEG), Sendai virus (HVJ) and the like can be used, and if necessary, an auxiliary agent such as dimethyl sulfoxide can be added to increase the fusion efficiency.
- the ratio of the use of the immune cells to the myeloma cells is, for example, preferably 1 to 10 times the number of the immune cells to the myeloma cells.
- the culture medium used for the cell fusion for example, an RPMI 1640 culture medium, a MEM culture medium suitable for the growth of the myeloma cell line, and other ordinary culture mediums used for this kind of cell culture are used. It is possible, and serum supplement such as fetal calf serum (FCS) can be used in combination.
- FCS fetal calf serum
- a predetermined amount of the immunocyte and the myeloma cell are mixed well in the culture solution, and a PEG solution preliminarily heated to about 37 ° C., for example, a PEG solution having an average molecular weight of about 1000 to 6000 is used.
- a PEG solution is added at a concentration of 30 to 60% (w / v) and mixed to form a desired fused cell (hybridoma).
- a cell fusion agent or the like that is unfavorable for the growth of the hybridoma can be removed.
- the hybridoma is selected by culturing it in a normal selective culture solution, for example, a HAT culture solution (a culture solution containing hypoxanthine, aminopterin and thymidine). Culturing in the HAT culture solution is continued for a time sufficient for cells other than the target hybridoma (non-fused cells) to die, usually for several days to several weeks. Next, a conventional limiting dilution method is performed, and screening and single cloning of the hybridoma producing the desired antibody are performed.
- a normal selective culture solution for example, a HAT culture solution (a culture solution containing hypoxanthine, aminopterin and thymidine). Culturing in the HAT culture solution is continued for a time sufficient for cells other than the target hybridoma (non-fused cells) to die, usually for several days to several weeks.
- a conventional limiting dilution method is performed, and screening and single cloning of the hybridoma producing the desired antibody
- a human lymphocyte is used to inject ⁇ 1.24 antigen or HM1.24 antigen in the mouth.
- Sensitized with the expressing cells the sensitized lymphocytes are fused with a human myeloma cell, for example, U266, and a desired human antibody having a binding activity to HM1.24 antigen or HM1.24 antigen expressing cells Can also be obtained (see Japanese Patent Publication No. 1-59878).
- a transgenic animal having all the repertoires of the human antibody gene is administered with the HM1.24 antigen or HML24 antigen-expressing cell serving as an antigen, and the desired human antibody is prepared according to the method described above.
- WO93 / 12227, WO92 / 03918, WO94 / 02602, WO94 / 25585, WO96 / 34096, WO96 / 33735 See International Patent Application Publication Nos. WO93 / 12227, WO92 / 03918, WO94 / 02602, WO94 / 25585, WO96 / 34096, WO96 / 33735).
- the hybridoma producing the monoclonal antibody thus produced can be subcultured in a normal culture medium, and can be stored for a long time in liquid nitrogen. is there.
- a method of culturing the hybridoma according to an ordinary method and obtaining the culture supernatant, or administering the hybridoma to a mammal compatible therewith A method of obtaining as ascites is used.
- the former method is suitable for obtaining high-purity antibodies, while the latter method is suitable for mass production of antibodies.
- a hybridoma producing an anti-HM1.24 antibody can be carried out by the method of Go to, T. et al. (Blood (1994) 84.1922-1930). Deposited internationally under the Budapest Treaty as FERM BP-5233 on September 14, 1995 with the Institute of Biotechnology and Industrial Technology, Institute of Industrial Science and Technology (1-1-3 Higashi, Tsukuba, Ibaraki Prefecture) Injecting the anti-HM1.24 antibody-producing hybridoma into the abdominal cavity of BA LB / c mice (manufactured by Nippon Clear) to obtain ascites, purifying the anti-HM1.24 antibody from the ascites fluid, Suitable medium, for example, RPMI 1640 medium containing 10% fetal serum, 5% BM-Condimed HI (manufactured by Boehringer Mannheim), Hypri-Doma SFM medium (manufactured by GI BC0-BRL), PFHM-II Culture medium (GI BC0-BR
- a recombinant gene obtained by cloning an antibody gene from a hybridoma, incorporating the antibody gene into an appropriate vector, introducing this into a host, and producing it using a gene recombination technique.
- Antibodies can be used (for example, see Carl, AK Borrebaeck, James,. Larrick, THERAPEUTIC MONOCLONAL ANTIBODIES, Published in the United Kingdom by MACMILLAN PUBLISHERS LTD, 1990). From the hybridoma, mRNA encoding the variable (V) region of the antibody is isolated.
- mRNA can be isolated by known methods, for example, guanidine ultracentrifugation (Chirgwin, JM et al., Biochemistry (1979) 18, 5294-5299), and AGPC method (Chomczynski, P. et al., Analytical Biochemistry, (1987)). Prepare total RNA using 162, 156-159), etc., and prepare mRNA using mRNA Purification Kit (Pharmacia). Also, mRNA can be directly prepared by using QuickPrep mRNA Purification Kit (Pharmacia).
- cDNA for the antibody V region is synthesized using reverse transcriptase.
- cDNA can be synthesized using AMV Reverse Transcriptase First-strand cDNA Synthesis Kit or the like.
- 5'-Ampli FINDER RACE Kit (Clontech) and 5'-RACE method using PCR (Frohman, MA et al., Pro Natl. Acad. Sci. USA (1988) 85 , 8998-9002; Belyavsky, A. et al., Nucleic Acids Res. (1989) 17, 2919-2932) can be used.
- the desired recombinant vector is prepared by selecting a colony by introducing it into a bacterium or the like.
- the base sequence of the target DNA is confirmed by a known method, for example, the Doxy method.
- DNA encoding the V region of the desired antibody is obtained, it is ligated to the DNA encoding the desired antibody constant region (C region) and inserted into an expression vector.
- DNA encoding the V region of the antibody may be incorporated into an expression vector containing the DNA of the C region of the antibody.
- an antibody gene is incorporated into an expression vector so as to be expressed under the control of an expression control region, for example, an enhancer or a promoter, as described later.
- host cells can be transformed with the expression vector to express the antibody.
- a recombinant antibody artificially modified for the purpose of, for example, reducing the antigenicity to humans such as a chimeric antibody or a humanized antibody
- modified antibodies can be produced using known methods.
- Chimeric antibodies are produced by ligating the DNA encoding the antibody V region obtained as described above to the DNA encoding the human antibody C region, incorporating the DNA into an expression vector, and introducing it into a host. (See European Patent Application Publication No. EP 125023, International Patent Application Publication No. WO 96/02576). Using this known method, chimeric antibodies useful in the present invention can be obtained.
- Escherichia coli having a plasmid containing DNA coding for the V region of the chimeric anti- ⁇ 1.24 antibody and the V region of the H chain are respectively Escherichja coli DH5 (pUC19-1.24L-g) and Escherichia col i DH5a ( P UC19-1.24H-gr 1)
- Escherichia coli DH5 pUC19-1.24L-g
- Escherichia col i DH5a P UC19-1.24H-gr 1
- FERM BP-5646 and FERM BP-5644 were deposited internationally under the Budapest Treaty on August 29, 1996, at Higashi-ku, Tsukuba City, Ibaraki Pref. (See Japanese Patent Application No. 9-271536).
- the humanized antibody is also called a reshaped human antibody, and the complementarity determining region (CDR) of a non-human mammal, for example, a mouse antibody, is replaced with a human body. It has been transplanted into the complementarity determining region, and its general gene recombination technique is also known (European Patent Application Publication No. EP 125023, International Patent Application Publication No. W0
- a DNA sequence designed to link (framework region; FR) is synthesized by PCR from several oligonucleotides that have been prepared so as to have overlapping portions at the ends.
- the obtained DNA is ligated to DNA encoding the C region of the human antibody, then inserted into an expression vector, and introduced into a host to produce it (European Patent Application Publication No. EP 239400).
- the human antibody FR linked via the CDR is selected so that the complementarity-determining region forms a favorable antigen-binding site. If necessary, amino acids in the framework region of the variable region of the antibody may be substituted so that the complementarity determining region of the reshaped human antibody forms an appropriate antigen-binding site.
- a plasmid containing DNA encoding the V chain a region (SEQ ID NO: 2) and the H chain V region r version (SEQ ID NO: 3) of a humanized anti-HM1.24 antibody is used.
- Escherichia coli having a plasmid containing DNA encoding the H chain V region s version of the humanized anti-HM1.24 antibody (SEQ ID NO: 4) is also Escherichia coli D H5 «(pUC19- As RVHs-AHM-g 1), the Institute of Biotechnology and Industrial Technology, Institute of Industrial Science and Technology (1-1-3 Tsukuba-Higashi, Ibaraki Pref.) Was registered with FERM on September 29, 1997. It has been deposited internationally under the Budapest Treaty as BP-6127 (see Japanese Patent Application No. 9-271536).
- the chimeric antibody and the humanized antibody use a human antibody C region, and human CA can be used as a particularly preferred human antibody constant region.
- Chimeric antibodies consist of the variable regions of antibodies derived from mammals other than human and C regions derived from human antibodies, and humanized antibodies comprise the complementarity-determining regions of antibodies derived from mammals other than human and human antibodies. It is composed of a framework region (FR) and a C region of origin, and has a reduced antigenicity in a human body, and thus is useful as an active ingredient of the therapeutic agent of the present invention.
- a preferred specific example of the humanized antibody to be used is a humanized anti-HM1.24 antibody (see Japanese Patent Application No. 9-271536).
- Preferred specific examples of the L-chain V region of the humanized anti-HM1.24 antibody include those having an amino acid sequence encoded by the nucleotide sequence shown in SEQ ID NO: 2.
- a preferred specific example of the H chain V region of the humanized anti-HM1.24 antibody is one having an amino acid sequence encoded by the nucleotide sequence shown in SEQ ID NO: 3 or 4. Is mentioned.
- the antibody gene constructed as described above can be expressed and obtained by a known method.
- mammalian cells useful and commonly used It can be expressed by an oral motor, an antibody gene to be expressed, a DNA having a polyA signal operably linked to its 3 ′ downstream, or a vector containing the DNA.
- a promoter overnight promoter human cytomegalovirus immediate early promoter / enhancer can be mentioned.
- SV retrovirus
- poliovirus poliovirus
- adenovirus adenovirus
- simian virus 40 SV
- a promoter / enhancer derived from a mammalian cell such as a virus promoter such as 40
- HEF1a virus promoter-1a
- expression can be performed by operably linking a useful promoter commonly used, a signal sequence for antibody secretion, and an antibody gene to be expressed.
- the promoters include the lacz promoter and the araB promoter.
- the lacz promoter the method of Ward et al. (Nature (1098) 341, 544-546; FA SEB J. (1992) 6, 2422-2427), and when the araB promoter is used, the method of Better et al. (Science (1988) 240, 1041-1043).
- a pelB signal sequence (Lei, SP et al J. Bact. eriol. (1987) 169, 4379) may be used. After separating the antibody produced in the periplasm, the structure of the antibody is appropriately refolded and used (see, for example, W096 / 30394).
- the expression vector was selected as a selection marker, including the aminoglycoside trans- ferase (APH) gene, thymidine kinase (TK) gene, and Escherichia coli xanching. It can contain a guanine phosphoryltransferase (Ecogpt) gene, a dihydrofolate reductase (dhir) gene, and the like.
- APH aminoglycoside trans- ferase
- TK thymidine kinase
- Edhir dihydrofolate reductase
- any production system can be used. Production systems for producing antibodies include in vitro and in vivo production systems. In vitro production systems include production systems that use eukaryotic cells and production systems that use prokaryotic cells.
- animal cells include (1) mammalian cells, for example, CH0, COS, myeloma, BHK (baby hamster kidney), HeLa, Vero, (2) amphibian cells, for example, African oocyte, Alternatively, (3) insect cells such as sf9 and sf2K Tn5 are known.
- Known plant cells include cells derived from the genus Nicotiana, for example, cells derived from Nicotiana tabacum, which may be callus cultured.
- Fungal cells include yeast, for example, Saccharomyces (Saccaromvc), for example, Saccharomyces cerevisiae (Saccaromvces cerevisiae), Yeast 4 canine, for example, Aspergillus, for example, Aspergillus 'Niger (Aspergillus niger) is known.
- Saccharomyces Saccharomyces cerevisiae
- Saccharomyces cerevisiae Saccharomyces cerevisiae
- Yeast 4 canine for example, Aspergillus, for example, Aspergillus 'Niger (Aspergillus niger) is known.
- E. coli Escherichia coli
- Bacillus subtilis Bacteria As cells, Escherichia coli (E. coli) and Bacillus subtilis are known.
- An antibody can be obtained by introducing a desired antibody gene into these cells by transformation, and culturing the transformed cells in an inlet. Culture is performed according to a known method. For example, DMEM, MEM, RPMI 1640. iMDM can be used as a culture solution, and a serum supplement such as bovine calf serum (FCS) can be used in combination. Alternatively, antibodies may be produced in vivo by transferring the cells into which the antibody gene has been introduced into the peritoneal cavity or the like of the animal.
- examples of in vivo production systems include production systems using animals and production systems using plants. When using animals, there are production systems using mammals and insects.
- mice As mammals, goats, bushes, sheep, mice, and mice can be used (Vicki Glaser, SPECTRUM Biotechnology Applications, 1993). In addition, silkworms can be used as insects.o
- tobacco When using plants, for example, tobacco can be used.
- an antibody gene is introduced into these animals or plants, and antibodies are produced and recovered in the animals or plants.
- an antibody gene is inserted into a gene encoding a protein that is uniquely produced in milk, such as goat casein, to prepare a fusion gene.
- a DNA fragment containing the fusion gene into which the antibody gene has been introduced is injected into a goat embryo, and this embryo is introduced into a female goat.
- the desired antibody is obtained from the milk produced by the transgenic Nigga or the progeny of the goat that has received the embryo.
- Hormones may be used in transgenic fish as appropriate to increase the amount of milk containing the desired antibody produced by transgenic fish (Ebert, KM et al., Bio / Technology (1994) 12 , 699-702).
- silkworms insert the desired antibody gene.
- the baculovirus thus infected is infected to a silkworm, and a desired antibody is obtained from a body fluid of the silkworm (Susumu, M. et al., Nature (1985) 315, 592-594).
- the target antibody gene is introduced into a vector for plant expression, for example, pMON530, and this vector is introduced into a vector such as Agrobacterium tumefaciens.
- This bacterium is used to infect evening sprouts, for example, Nicotiana tabacum, to obtain the desired antibody from the leaves of this tobacco (Julian, K. -C. Ma et al., Eur. J. Immunol. (1994) 24, 131-138).
- DNA encoding the antibody heavy chain (H chain) or light chain (L chain) is separately added to the expression vector.
- the host may be transformed by integration and the host may be co-transformed, or the DNA encoding the H and S chains may be incorporated into a single expression vector to transform the host (International Patent Application Publication No. W0 94-11523).
- the antibody obtained as described above can be used as a modified antibody by binding to various molecules such as polyethylene glycol (PEG).
- PEG polyethylene glycol
- the “antibody” referred to in the claims of the present application also includes these modified antibodies.
- Such a modified antibody can be obtained by subjecting the obtained antibody to chemical modification.
- the antibody produced and expressed as described above can be separated from the host inside and outside the cell and from the host and purified to homogeneity. Separation and purification of the antibody used in the present invention can be carried out by affinity chromatography. Columns used for affinity chromatography Examples thereof include a protein A column and a protein G column. Examples of the carrier used for the Protein A column include Hyper D, P0R0S, Sepharose FF and the like.
- the separation and purification methods used for ordinary proteins may be used, and there is no limitation.
- the antibody used in the present invention can be obtained by appropriately selecting and combining chromatography other than the above-mentioned affinity chromatography, finography, ultrafiltration, salting out, and dialysis. Can be separated and purified.
- the chromatography include ion exchange chromatography, hydrophobic chromatography, gel filtration, and the like. These chromatographs can be applied to HPLC. In addition, reverse phase HPLC can be used.
- the concentration of the antibody obtained in 2-1 can be measured by measuring absorbance or ELISA. That is, when the absorbance is measured, the antibody used in the present invention or a sample containing the antibody is appropriately diluted with PBS (-), and the absorbance at 280 nm is measured. Calculate as 0D.
- measurement can be performed as follows. That is, goat anti-human IgG (manufactured by BIO SOURCE) 1001 diluted to 1 g / ml with 0.1 M bicarbonate buffer (pH 9.6) was added to a 96-well plate (manufactured by Nunc). Incubate with C to immobilize the antibody.
- the cells used in the present invention can be prepared by the following method. 3-1. Preparation of human peripheral blood lymphocyte fraction
- Diluted blood collected from a healthy subject is diluted 1/2 with PBS (-), layered on Ficol® paque (Pharmacia) in a 50 ml centrifuge tube (BECTON DICKINSON), and centrifuged at 450 X g for 40 minutes at room temperature. After that, the mononuclear cell fraction in the boundary layer is separated. After preparation the proper density of the same fraction 10% fetal bovine serum (manufactured by Moregate) containing RPMI16 40 medium (GIBC0- manufactured BRL), 1 hour at 3 c, 5% C0 2 under conditions plastic Shah in one Les Perform the incubating operation twice to remove the cells attached to the petri dish. The remaining non-adherent cells can be used as the human peripheral blood lymphocyte fraction in the following experiments.
- the human peripheral blood lymphocytes prepared as described above were placed in a polypropylene tube at a density of 5 ⁇ 10 6 cells / ml in the presence or absence of 1 ng / ml IL-6 and 0.01% SAC (Pansorbin). cells, Calbiochem., Ltd.) and 2 days, at 37, in a 5% C0 I Nkyube Bok child in two conditions, the B cells in peripheral dust emissions Pas sphere can and activation child.
- Human peripheral T cells can be purified from human peripheral blood lymphocytes prepared in 3-1 using Cellect Humm T cell Kit (Biotex) according to the attached method.
- T cells Purify the T cells purified in 3-3 above with RP containing 2% fetal bovine serum (Moregate). Suspend in MI 1640 medium and add 1 or 10 ⁇ g / ml PHA (Phytohemagglutinin, Sigma) at a cell density of 1 ⁇ 10 6 cells / 1 ml / well in a 24-well culture plate, and add the cells at 37 ° C. % C0 2 conditions, the T cells in the youngest Kozuechiri lymphocytes in the child 4 days of culture can and activation child.
- PHA Physicalhemagglutinin
- the reactivity between lymphocyte cells and the antibody used in the present invention can be determined by FCM (flow cytometry) analysis.
- the cells freshly isolated cells or cells obtained by further culturing them can be used.
- peripheral blood mononuclear cells, peripheral blood lymphocytes, peripheral blood T lymphocytes, peripheral blood B lymphocytes, and the like can be used as freshly separated cells.
- PBS (-) PBS (-)
- anti-HM1 diluted to 25 ⁇ g / ml with FACS buffer (PBS (-) containing 2% fetal serum and 0.1% sodium azide).
- PBS (-) FACS buffer
- FACS buffer After washing with FACS buffer, add 100 g of FITC-labeled goat anti-mouse antibody (GAM, Becton Dickinson) at 25 g / ml, and incubate at ice temperature for 30 minutes. After washing with FACS buffer, the cells are suspended in 600 1 of FACS buffer, and the fluorescence intensity of each cell may be measured by FACScan (manufactured by Becton Dickinson).
- GAM FITC-labeled goat anti-mouse antibody
- lymphocytes undergo a blastogenesis reaction in T cells, and antibody production is observed in B cells.
- the antibody used in the present invention is added to T cells to suppress the blastogenesis reaction.
- the antibody used is added to B cells to suppress antibody production, or the antibody used in the present invention is added to lymphocytes to evaluate changes in the expression of antigen markers on the cell surface. What to do it can.
- the human peripheral T cells purified as described above were suspended in RPMI 1640 medium containing 2% fetal bovine serum (manufactured by Moregate), and cultured at a cell density of 1 x 10 5 cells / 200 1 / well in a 96-well culture plate.
- the human peripheral blood lymphocytes prepared as described above were placed in a polypropylene tube at a density of 5 ⁇ 10 6 cells / ml with 0.01% SAC (Pansorbin cells, Calbiochem.) At 37 ° C for 5 days for 2 days. % C0 between Lee Nkyube Bok child in two conditions, activate B cells youngest ⁇ lymph neutrophils.
- the IgG concentration in the main culture supernatant can be measured by a human IgG-specific ELISA. That is, 100 i1 of goat anti-human IgG (manufactured by TAG0) diluted to 1 / g / ral with 0.1 M bicarbonate buffer (pH 9.6) was added to a 96-well immunoplate (manufactured by Nunc). Incubate at 4 ° C to solidify the antibody. After blocking, add 100 ⁇ l of human IgG (manufactured by CAPPEL) as an appropriately diluted culture supernatant or sample, and incubate at room temperature for 1 hour.
- human IgG-specific ELISA 100 i1 of goat anti-human IgG (manufactured by TAG0) diluted to 1 / g / ral with 0.1 M bicarbonate buffer (pH 9.6) was added to a 96-well immunoplate (manufactured by Nunc). Incubate at 4 ° C
- the human peripheral blood lymphocytes or human peripheral T cells prepared as described above were combined with PHA or SAC and anti-HM1.24 antibody or control mouse IgG2a as described in 5-1 or 5-2. Culture together. Reaction of these cells with an antibody that recognizes a cell surface antigen marker whose expression changes before and after activation, such as the CD10, CD25, CD38, CD40, CD47, CD54, CD98, PCA-1, HM1.24 antigen, etc. Let it. This can be analyzed by FCM as described in 4 above.
- the activated lymphocytes express the HM1.24 antigen, and the addition of anti-HM1.24 antibody suppresses the T lymphocyte blastogenesis, and furthermore, In B, suppression of antibody production by B lymphocytes was observed. These results indicate that the anti-HM1.24 antibody has an effect of suppressing the activation of lymphocytes.
- diseases associated with lymphocyte activation include autoimmune diseases, rejection at the time of transplantation of organs and the like, and allergy.
- autoimmune diseases include Hashimoto's thyroiditis, primary myxedema, thyrotoxicosis, pernicious anemia, autoimmune atrophic gastritis, Addison's disease, premature menopause, and insulin.
- rejection at the time of transplantation of organs examples include rejection at the time of kidney, liver and heart transplantation, epithelial or endothelial rejection at the time of corneal transplantation, HV D at the time of bone marrow transplantation, and GVHD ( Translated by Shunichi Hirose et al., Clinical Immunology, Iraised (1994) Nankodo). Allergies are represented by type I allergies typified by atopic diseases, type II allergies seen in drug allergies, type III allergies causing various types of nephritis, dermatitis caused by cosmetics and metals, etc. (Takeo Yanagi et al., New Immunology Monographs (7) Immunity and Allergy (1981), Medical School). Therefore, the therapeutic agent of the present invention is useful as a therapeutic agent for these lymphocyte activation-related diseases.
- the lymphocyte activation inhibitor of the present invention can be administered parenterally systemically or locally.
- intravenous injection such as infusion, intramuscular injection, intraperitoneal injection, or subcutaneous injection can be selected, and the administration method can be appropriately selected depending on the age and symptoms of the patient.
- the effective dose is selected in the range of 0.01 mg / kg to 100 mg / kg body weight at a time.
- a dose of 1 to 1000 mg, preferably 5 to 50 mg can be chosen per patient.
- the lymphocyte activation inhibitor of the present invention may contain pharmaceutically acceptable carriers and additives depending on the administration route.
- Such carriers and additives include water, pharmaceutically acceptable organic solvents, collagen, polyvinyl alcohol, polyvinyl pyrrolidone, carboxyvinyl polymer, carboxymethyl cellulose.
- Examples include lilcohol, stearic acid, human serum albumin (HSA), mannitol, sorbitol, lactose, and surfactants acceptable as pharmaceutical additives.
- the additives to be used are selected appropriately or in combination from the above depending on the dosage form, but are not limited thereto.
- Anti-HM1.24 antibody-producing hybridomas were obtained according to the method of Goto, T et al. (Blood (1 994) 84. 1922-1930).
- BALB / c mice (Nippon Clear Co., Ltd.), which were given 500 n 1 of 2,6,10,14-tetramethylpenecane (Wako Pure Chemical Industries, Ltd.) intraperitoneally one to three days before intraperitoneally, 5 ⁇ 10 6 hybridomas were injected intraperitoneally. From day 10 after injection of Hypri-Doma, ascites collected in the abdominal cavity of the mouse was collected with a 19-gauge indwelling needle happi-cas (made by Medikit).
- the ascites collected was centrifuged twice at 1,000 rpm and 3000 rpm using a low-speed centrifuge RLX-131 (manufactured by Tomi Issei) to remove miscellaneous waste such as hybridomas and blood cells.
- Purification of anti-HM1.24 antibody from mouse ascites was performed by the following method. An equal volume of PBS (-) was added to the mouse ascites, and then filtered using a hollow fiber filter media brush (MILLIPORE). The high-speed antibody purification system ConSep LC100 (MILLIPORE) and HyperD Using a Protein A column (column volume 20 mK, manufactured by NGK), PBS (-) was used as the adsorption buffer, and 0.1 M sodium citrate was used as the elution buffer, based on the attached instructions. Affinity purification was performed using a buffer (pH 4).
- Control mouse IgG2a was purified by the following method.
- KAPPA mouse IgG2a
- UPC 10 ascites
- CAPPEL ascites
- the concentration of the purified antibody was measured by measuring the absorbance. That is, After diluting the antibody prepared with PBS (-), the absorbance at 280 nm was measured, and 1 mg / ml was calculated as 1.350D.
- Peripheral blood collected from a healthy person is diluted 1/2 with PBS (-), layered on Ficoll paque (Pharmacia) in a 50 ml centrifuge tube (BECTON DICKINSON), and centrifuged at 450 X g for 40 minutes at room temperature. After that, the mononuclear cell fraction of the boundary layer was separated. After preparation the proper density of the same fraction 10% fetal bovine serum (manufactured by Moregate) containing RPMI16 40 medium (manufactured GIBC0), 1 hour Lee Nkyu at 37 ° C, 5% C0 2 under conditions in plastic petri dish The cells were attached to the petri dish by removing the plate twice. The remaining non-adherent cells were used in the following experiments as a fraction of human lymphocyte lymphocytes.
- the human peripheral blood lymphocytes prepared as described above were placed in a polypropylene tube at a density of 5 ⁇ 10 6 cells / ml in the presence or absence of 1 ng / ml IL-6 and 0.01% SAC (Pansorbin). cells, Calbi ochem., Ltd.) and 2 days, at 37, in a 5% C0 I Nkyube Bok child in two conditions to activate B cells in peripheral dust emissions Pas sphere.
- the IgG concentration in the culture supernatant was measured by a human IgG-specific ELISA. That is, goat anti-human IgG (TAG0) 100 1 diluted to 1 g / ml with 0.1 M bicarbonate buffer (pH 9.6) was added to a 96-well immunoplate (Nunc). In addition, incubation was performed at 4 ° C to solidify the antibody. After blocking, human Ig G (manufactured by CAPPEL) 1001 was added as an appropriately diluted culture supernatant or sample, and the mixture was incubated at room temperature for 1 hour.
- the human peripheral T cells were purified from the human peripheral blood lymphocytes prepared in Example 2 using a Cellect Humm T cell Kit (manufactured by Biotex) according to the attached method.
- the purified T cells are suspended in RPMI 1640 medium containing 2% fetal calf serum (manufactured by Moregate) and 0, 1, 10 ⁇ g / cell density in a 24-well culture plate at a cell density of 1 ⁇ 10 6 cells / 1 ml / we11.
- ml of PHA Physical toheraagglutinin, manufactured by Sigma 37 converting mechanism, 5% C0 2 under the conditions, and cultured for 4 days. Some of these are cultured for 4 days After that, the cells were resuspended in RPMI 1640 medium containing 2% fetal bovine serum (manufactured by Moregate) without PHA, and cultured for 3 days.
- the antibody was diluted to 25 ⁇ g / ml with FACS buffer (PBS (-) containing 2% fetal serum and 0.1% sodium azide). The 1.24 antibody or 100 ⁇ 1 of the control antibody was added, and the mixture was incubated at an ice temperature for 30 minutes.
- FACS buffer PBS (-) containing 2% fetal serum and 0.1% sodium azide
- FITC-labeled goat anti-mouse antibody (GAM, manufactured by Becton Dickinson) 1001 was added, and the mixture was incubated at ice temperature for 30 minutes.
- FACS buffer 25 g / ml of FITC-labeled goat anti-mouse antibody (GAM, manufactured by Becton Dickinson) 1001 was added, and the mixture was incubated at ice temperature for 30 minutes.
- the cells were suspended in 600 1 of FACS buffer, and the fluorescence intensity of each cell was measured by FACScan (manufactured by Becton Dickinson).
- FACScan manufactured by Becton Dickinson
- T cells 3 H- Ji Mi Jin uptake by juvenile Kahan response by PHA stimulation increases, change in addition to this Koniko down Tororumau scan IgG2a 20 g / ml There was no, adding 20 g / ml HM1.24 antibody when 3 H- Ji Mi Jin uptake inhibition was observed. Therefore, it was shown that the anti-HM1.24 antibody suppressed the activation of T cells.
- a mouse anti-HM1.24 monoclonal antibody-producing hybridoma was prepared according to the method described in Goto, T. et al., Blood (1994) 84, 1992-1930.
- mice Three days before sacrifice of the mice, 1.5 ⁇ 10 6 KPC-32 were injected into the spleen of the mice to further increase their antibody titers (Goto, T. et al., Tokushiraa J Exp. Med. (1990) 37, 89). After sacrifice of the mouse, the spleen was excised, and the spleen cell excised according to the method of Groth, de St. & Schreidegger (Cancer Research (1981) 41, 3465) and myeoma cell line SP2 / 0 were subjected to cell fusion. did.
- the reaction was stopped with 2N sulfuric acid, and the absorbance at 492 nm was measured using an ELISA reader (manufactured by Bio-Rad).
- Positive hybridoma culture to eliminate hybridomas that produce antibodies to human immunoglobulin
- the supernatant was adsorbed to human serum in advance, and the reactivity to other cell lines was screened by ELISA.
- Positive hybridomas were selected and their reactivity to various cells was determined by flow cytometry.
- the last selected hybridoma clone was cloned twice and injected into the abdominal cavity of pristane-treated BALB / C mice to obtain ascites.
- Monoclonal antibodies were purified from mouse ascites by precipitation with ammonium sulfate and protein A affinity chromatography kit (Amure PA, manufactured by Amersham). The purified antibody was labeled with FITC by using a Quick Tag FITC binding kit (manufactured by Boehringer Mannheim).
- HM1.24 a hybrid clone most useful for flow cytometry analysis and having CDC activity against RPMI 8226 was selected and named HM1.24.
- the subclass of the monoclonal antibody produced by this hybridoma was determined by ELISA using a subclass-specific anti-mouse porcupine antibody (Zymed).
- the anti-HM1.24 antibody had a subclass of IgG2a /.
- Hypri-Doma HM1.24 which produces anti-HM1.24 antibody, was submitted to the Institute of Biotechnology, Institute of Industrial Science and Technology (1-3 1-3 Tsukuba East, Ibaraki Prefecture) by FERM BP on September 14, 1995. -Deposited internationally as 5233 under the Busseast Convention.
- Total RNA was prepared from the hybridoma HM1.24 prepared in Reference Example 1 by a conventional method. From this, cDNA encoding the mouse antibody V region was synthesized and amplified by the polymerase chain reaction (PCR) method and the 5'-RACE method. A DNA fragment containing the gene encoding the mouse V region is obtained, and each of these DNA fragments is ligated to a plasmid pUC-based cloning vector, introduced into E. coli competent cells, and transformed into E. coli. Got a body.
- PCR polymerase chain reaction
- the above plasmid was obtained from this transformant, the nucleotide sequence of the cDNA coding region in the plasmid was determined according to a conventional method, and the complementarity determining regions (CDRs) of the respective V regions were determined. did.
- the V region CDR of the mouse anti-HM1.24 antibody was transplanted to the human antibody by CDR transplantation.
- the L chain of the human antibody RE I was used as the L chain of the human antibody, and the Fm-3 of the human antibody HG3 was used for the framework region (FR) 1-3 for the human antibody H chain.
- FR4 of human antibody JH6 was used.
- the amino acids of FRs in the V region of the H chain were replaced so that the CDR-grafted antibody formed an appropriate antigen-binding site.
- each gene was separately introduced into a HEF vector, and humanized.
- a vector expressing the L chain or H chain of the anti-1.224 antibody was prepared.
- a cell line producing a humanized anti-HM1.24 antibody was established.
- the antigen-binding and binding-inhibitory activities of the humanized anti-human 1.24 antibody obtained by culturing this cell line on the human amniotic membrane-derived cell line WISH were examined by Cell ELISA.
- the humanized anti-HM1.24 antibody has the same antigen-binding activity as the chimeric antibody, and the binding inhibitory activity using the biotinylated mouse anti-substituent 1.24 antibody is also significant. Alternatively, it had the same activity as the mouse antibody.
- Escherichia coli having a plasmid containing DNA encoding the V region of the chimeric anti-HM1.24 antibody and the V region of the H chain were respectively Escherichia coli DH5a (pUC19-1.24L-gc) and Escherichia E. coli DH5 (pUC19-1.24H-gr1) was submitted to the Institute of Biotechnology, Industrial Science and Technology Institute (1-1-3 Tsukuba East, Ibaraki Prefecture) on August 29, 1996. They were deposited internationally under the Budapest Treaty as FERM BP-5646 and FERM BP-5644, respectively.
- Plasmid containing DNA encoding the L chain V region a version (SEQ ID NO: 2) and the H chain V region r version (SEQ ID NO: 3) of the humanized anti-HM1.24 antibody Escherichia co 11 DH5 strain (pUC19-RVLa-AHM-g) and Escheri chia coli DH5 strain (pUC19-RVHr-AHM-gr 1), respectively, are referred to as Escherichia co 11 DH5 strain (pUC19-RVHr-AHM-gr 1)
- Escherichia co 11 DH5 strain pUC19-RVHr-AHM-gr 1
- FERM BP-5645 and FERM BP-5643 were deposited internationally under the Budapest Treaty on 1-3-1 Higashi, Tsukuba City, Prefecture.
- Escherichia coli having a plasmid containing DNA encoding the H chain V region s version (SEQ ID NO: 4) of the humanized anti-HM1.24 antibody was used for cherichia coli DH5 (pUC19-
- the RVHs-AHM-g 7 ⁇ was submitted to the Institute of Biotechnology, Institute of Industrial Science and Technology (1-1-3 Higashi, Tsukuba-shi, Ibaraki Prefecture) on September 29, 1997 as FERM BP- It was deposited internationally as 6127 under the Budapest Treaty.
- Total RNA was prepared from the human multiple myeloma cell line KPMM2 according to the method of Chirgwin et al. (Biochemistry, 18.5294 (1979)). That is, 2.2 ⁇ 10 8 KPMM2s were completely homogenized in 20 ml of 4 M guanidine thiosine mixture (manufactured by Nacalai Tesque). The homogenate was overlaid on a 5.3 M cesium chloride solution in a centrifuge tube, and then centrifuged at 20 ° C for 24 hours at 31, OOOrpm at 31 ° C, overnight at the Beck man SW40 port to precipitate RNA. I let it.
- RNA precipitate is washed with 70% ethanol and dissolved in 10 mM Tris-HCl (pH 7.4) 3001 containing 1 mM EDTA and 0.5% SDS, and then Pronase (Boehringer) Was added to a concentration of 0.5 mg / ml, and the mixture was incubated at 37 ° C for 30 minutes. The mixture was extracted with phenol and chloroform, and the RNA was precipitated with ethanol. Next, the RNA precipitate was dissolved in 10 mM Tris-HCl (pH 7.4) 2001 containing ImM EDTA.
- poly (A) + RNA was purified using the Fast Track 2.0 mRNA Isolation Kit (manufactured by Invitrogen) according to the instructions attached to the kit.
- a double-stranded cDNA was synthesized using the TimeSave r cDNA Synthesis Kit (Pharmacia) according to the instructions attached to the kit, followed by Directional Cloning Toolbo x ( Pharmacia) and the EcoRI adapter supplied with the kit was connected according to the kit's prescription. EcoRi Adapter Configuration The treatment with Notl and the restriction enzyme Notl was performed according to the recipe attached to the kit.
- an adapter-added double-stranded cDNA having a size of about 500 bp or more is separated and purified using a 1.5% low-melting point agarose gel (manufactured by Sigma), and an adapter-added double-stranded cDNA of about 40 ⁇ 1 is added.
- the adapter-added double-stranded cDNA prepared in this manner was previously treated with restriction enzymes EcoRI, Notl and alkaline phosphatase (manufactured by Takara Shuzo) to obtain pCOSl vector-1 (Japanese Patent Application No. 255196) and T4 DNA ligase (GIBC0-BRL) to construct a cDNA library.
- the constructed cDNA library was transduced into Escherichia coli cell line DH5 (GIBC0-BR) and the total size was estimated to be about 2.5 x 10 s independent clones.
- a panning dish coated with a mouse anti-HM1.24 antibody was prepared according to the method of B. Seed et al. (Proc. Natl. Acad. Sci. USA, 84, 3365-3369 (1987)). That is, a mouse anti-HM1.24 antibody was added to 50 mM Tris-HCl (pH 9.5) at a concentration of 10 g / ml. 3 ml of the antibody solution thus prepared was added to a cell culture dish having a diameter of 60 mm, and the mixture was incubated at room temperature for 2 hours. After washing three times with a 0.15 M NaCl solution, PBS containing 5 fetal calf serum, 1 mM EDTA and 0.02% NaN 3 was added, and the cells were blocked, and used for the following cloning.
- C0S-7 cells Bok preparative La Nsufu We click as described above, peeling with PBS containing 5 mM EDTA, 53 ⁇ 4; After washing once with PBS containing fetal calf serum, about 1 X 10 6 cells / ml was suspended in PBS containing 5 fetal bovine serum and 0.02% NaN 3 , added to the panning dish prepared as described above, and incubated at room temperature for about 2 hours. After washing three times gently with 5% fetal bovine serum and 0.02% containing NaN 3 PBS, cells or et plus Mi de DNA solution was bound to the panning Dish with containing 0.6% SDS and 10 mM EDTA Recovery was performed.
- the recovered plasmid DNA was transduced again into Escherichia coli DH5 ⁇ , and the plasmid DNA was amplified as described above and recovered by the alkaline method.
- the recovered plasmid DNA was transfected into COS-7 cells by the electroporation method, and the plasmid DNA was recovered from the cells bound in the same manner as described above. The same operation was repeated once more, and the recovered plasmid DNA was digested with restriction enzymes EcoRI and NotI. As a result, it was confirmed that an insert of about 0.9 kbp in size was concentrated.
- E. coli transfected with a part of the recovered plasmid DNA was A 2-YT agar plate containing 50 g / ml ampicillin was inoculated, cultured for 10 minutes, and plasmid DNA was recovered from a single colony. After digestion with restriction enzymes EcoRI and Not1, clone p3.19 having an insert size of about 0.9 kbp was obtained.
- Sequence type nucleic acid
- Sequence type nucleic acid
- Sequence type nucleic acid
- Sequence type nucleic acid
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Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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AU61181/98A AU718463B2 (en) | 1997-02-28 | 1998-02-27 | Inhibitor of lymphocyte activation |
CA002282631A CA2282631A1 (en) | 1997-02-28 | 1998-02-27 | Lymphocyte activation inhibitors |
KR10-1999-7007801A KR100370744B1 (ko) | 1997-02-28 | 1998-02-27 | 임파구의 활성화 억제제 |
EP98905703A EP0972524A4 (en) | 1997-02-28 | 1998-02-27 | LYMPHOCYTE ACTIVATION INHIBITORS |
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JP9/45663 | 1997-02-28 | ||
JP4566397 | 1997-02-28 |
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US36783398A A-371-Of-International | 1997-02-28 | 1998-08-25 | |
US09/760,723 Continuation US20020034507A1 (en) | 1997-02-28 | 2001-01-17 | Inhibitor of lymphocyte activation |
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WO1998037913A1 true WO1998037913A1 (fr) | 1998-09-03 |
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PCT/JP1998/000831 WO1998037913A1 (fr) | 1997-02-28 | 1998-02-27 | Inhibiteurs d'activation de lymphocytes |
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EP (1) | EP0972524A4 (ja) |
KR (1) | KR100370744B1 (ja) |
AU (1) | AU718463B2 (ja) |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1999043703A1 (fr) * | 1998-02-25 | 1999-09-02 | Chugai Seiyaku Kabushiki Kaisha | Technique de dosage immunochimique de l'anticorps anti-hm1.24 |
WO2002057316A1 (fr) * | 2000-12-28 | 2002-07-25 | Kirin Beer Kabushiki Kaisha | Nouvel anticorps monoclonal |
WO2005014651A1 (ja) * | 2003-08-11 | 2005-02-17 | Chugai Seiyaku Kabushiki Kaisha | 糖鎖改変抗hm1.24抗体 |
JPWO2006013923A1 (ja) * | 2004-08-05 | 2008-05-01 | Sbiバイオテック株式会社 | 自己免疫疾患を伴う関節炎の治療剤 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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IL131381A0 (en) | 1997-02-12 | 2001-01-28 | Chugai Pharmaceutical Co Ltd | Therapeutic agent for lymphatic tumors |
JP3986439B2 (ja) | 2001-02-07 | 2007-10-03 | 中外製薬株式会社 | 造血器腫瘍の治療剤 |
EP1957526B1 (en) * | 2004-12-20 | 2013-06-26 | Isu Abxis Co., Ltd. | Molecules inhibition intercellular adhesion |
US20080299128A1 (en) | 2006-06-20 | 2008-12-04 | Myung Kim | Effect of Bst2 on inflammation |
US8329186B2 (en) | 2004-12-20 | 2012-12-11 | Isu Abxis Co., Ltd | Treatment of inflammation using BST2 inhibitor |
US7740856B2 (en) | 2005-12-20 | 2010-06-22 | Isu Abxis Co., Ltd. | Effect of BST2 on inflammation |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1998014580A1 (fr) * | 1996-10-04 | 1998-04-09 | Chugai Seiyaku Kabushiki Kaisha | Anticorps anti-hm1.24 humain reconstitue |
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TW474991B (en) * | 1993-10-15 | 2002-02-01 | Toshio Hirano | Membrane protein polypeptide having function of pre-B cell proliferation and the encoded gene thereof |
-
1998
- 1998-02-27 KR KR10-1999-7007801A patent/KR100370744B1/ko not_active Expired - Fee Related
- 1998-02-27 CA CA002282631A patent/CA2282631A1/en not_active Abandoned
- 1998-02-27 EP EP98905703A patent/EP0972524A4/en not_active Withdrawn
- 1998-02-27 AU AU61181/98A patent/AU718463B2/en not_active Ceased
- 1998-02-27 WO PCT/JP1998/000831 patent/WO1998037913A1/ja not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998014580A1 (fr) * | 1996-10-04 | 1998-04-09 | Chugai Seiyaku Kabushiki Kaisha | Anticorps anti-hm1.24 humain reconstitue |
Non-Patent Citations (4)
Title |
---|
GOTO T., ET AL.: "A NOVEL MEMBRANE ANTIGEN SELECTIVELY EXPRESSED ON TERMINALLY DIFFERENTIATED HUMAN B CELLS.", BLOOD, AMERICAN SOCIETY OF HEMATOLOGY, US, vol. 84., no. 06., 1 January 1994 (1994-01-01), US, pages 1922 - 1930., XP002912307, ISSN: 0006-4971 * |
OZAKI K., ET AL.: "LOCALIZATION AND IMAGING OF HUMAN PLASMACYTOMA XENOGRAFTS IN SERVICE COMBINED IMMUNODEFICIENCY MICE BY A NEW MURINE MONOCLONAL ANTIBODY, ANTI-HM1.24.", THE JOURNAL OF EXPERIMENTAL MEDICINE, ROCKEFELLER UNIVERSITY PRESS, US, vol. 43., no. 01/02., 1 January 1996 (1996-01-01), US, pages 07 - 15., XP002918595, ISSN: 0022-1007 * |
OZAKI S., ET AL.: "IMMUNOTHERAPY OF MULTIPLE MYELOMA WITH A MONOCLONAL ANTIBODY DIRECTED AGAINST A PLASMA CELL-SPECIFIC ANTIEN, HM1.24.", BLOOD, AMERICAN SOCIETY OF HEMATOLOGY, US, vol. 90., no. 08., 1 January 1997 (1997-01-01), US, pages 3179 - 3186., XP002912305, ISSN: 0006-4971 * |
See also references of EP0972524A4 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999043703A1 (fr) * | 1998-02-25 | 1999-09-02 | Chugai Seiyaku Kabushiki Kaisha | Technique de dosage immunochimique de l'anticorps anti-hm1.24 |
WO2002057316A1 (fr) * | 2000-12-28 | 2002-07-25 | Kirin Beer Kabushiki Kaisha | Nouvel anticorps monoclonal |
US7592005B2 (en) | 2000-12-28 | 2009-09-22 | Kirin Beer Kabushiki Kaisha | Monoclonal antibody |
WO2005014651A1 (ja) * | 2003-08-11 | 2005-02-17 | Chugai Seiyaku Kabushiki Kaisha | 糖鎖改変抗hm1.24抗体 |
JPWO2005014651A1 (ja) * | 2003-08-11 | 2006-11-24 | 中外製薬株式会社 | 糖鎖改変抗hm1.24抗体 |
JPWO2006013923A1 (ja) * | 2004-08-05 | 2008-05-01 | Sbiバイオテック株式会社 | 自己免疫疾患を伴う関節炎の治療剤 |
Also Published As
Publication number | Publication date |
---|---|
KR100370744B1 (ko) | 2003-02-05 |
AU6118198A (en) | 1998-09-18 |
AU718463B2 (en) | 2000-04-13 |
KR20000075732A (ko) | 2000-12-26 |
CA2282631A1 (en) | 1998-09-03 |
EP0972524A4 (en) | 2001-03-28 |
EP0972524A1 (en) | 2000-01-19 |
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