WO2006046689A1 - 子宮内膜症治療剤 - Google Patents
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- WO2006046689A1 WO2006046689A1 PCT/JP2005/019871 JP2005019871W WO2006046689A1 WO 2006046689 A1 WO2006046689 A1 WO 2006046689A1 JP 2005019871 W JP2005019871 W JP 2005019871W WO 2006046689 A1 WO2006046689 A1 WO 2006046689A1
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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
- C07K16/24—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against cytokines, lymphokines or interferons
- C07K16/244—Interleukins [IL]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
- A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- A61K38/19—Cytokines; Lymphokines; Interferons
- A61K38/20—Interleukins [IL]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P15/00—Drugs for genital or sexual disorders; Contraceptives
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P15/00—Drugs for genital or sexual disorders; Contraceptives
- A61P15/08—Drugs for genital or sexual disorders; Contraceptives for gonadal disorders or for enhancing fertility, e.g. inducers of ovulation or of spermatogenesis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- 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
- C07K16/2866—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against receptors for cytokines, lymphokines, interferons
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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
Definitions
- the present invention relates to a therapeutic agent for endometriosis containing an interleukin 5 (hereinafter abbreviated as IL-5) antagonist as an active ingredient.
- IL-5 interleukin 5
- Methods for treating endometriosis are mainly classified into drug therapy and surgical therapy.
- Drug therapy includes symptomatic therapy such as analgesics and oral contraceptives, and administration of this drug such as hormonal therapy, and surgical therapy includes conservative surgery and radical surgery (Non-patent Document 1). ).
- symptomatic therapy such as analgesics and oral contraceptives
- administration of this drug such as hormonal therapy
- surgical therapy includes conservative surgery and radical surgery (Non-patent Document 1). ).
- surgical treatment is insufficient, and no drugs have been developed to cure endometriosis.
- SB-240563 Smith's Klein Bee Cham
- Sch-55700 CDP_835
- Sch-55700 Schering's Plow / Celtech
- SB-240563 shows a decrease in the number of eosinophils in peripheral blood in patients with mild asthma (10 0 Annual Meetings of the American Society for Clinical Pharmacology and herap eutics, March / 1999)
- Sch_55700 It is known that the model suppresses eosinophilia in the lung due to antigen stimulation (Non-patent Document 2).
- KM8399 As an antibody that reacts with the human IL-15 receptor chain, KM8399 (patent document 1), which is a humanized antibody, is known. KM8399 is expected to be useful as a therapeutic agent for allergic diseases including chronic bronchial asthma, and has the Fc region of the human IgGl subclass, which induces apoptosis specifically in human eosinophils and induces apoptosis. It is well known that the induction of phenotype is due to antibody-dependent cytotoxic activity (Patent Document 2).
- Non-patent document 1 Tsutomu Doji et al .: Selection of treatment methods for endometriosis. Gynecology treatment 78: 179-182, 1999
- Non-Patent Document 2 Arzneimitte ⁇ Kla, 49, 779 (1999) Disclosure of the Invention Problems to be Solved by the Invention
- the present invention relates to the following (1) to (: 13).
- a therapeutic agent for endometriosis comprising an interleukin-15 antagonist as an active ingredient.
- Interleukin-1 5 antagonist is interleukin-1 and interleukin-1
- the therapeutic agent according to (1) above which is an antibody or an antibody fragment thereof that inhibits binding to a receptor.
- the therapeutic agent according to (2) above which is an antibody that binds to interleukin 5.
- the therapeutic agent according to (2) above which is an antibody that binds to the interleukin 5 receptor.
- recombinant antibody is a recombinant antibody selected from the group consisting of a human chimeric antibody, a human rabbit antibody and a human antibody.
- the antibody fragment comprises Fab, Fa, F (ab ′), single chain antibody (scFv), dimerization variable region (
- Diabody selected from peptides containing disulfide stabilization variable region (dsFv) and CDR
- the present invention provides a therapeutic agent for endometriosis containing an IL-5 antagonist as an active ingredient.
- FIG. 1 is a diagram showing the endometriosis lesion formation inhibitory action of an anti-mouse IL-5 receptor antibody in a mouse endometriosis model.
- the vertical axis represents the lesion size (mm 2 ).
- FIG. 2 is a graph showing the anti-endometrial disease degeneration inhibitory effect of anti-mouse IL-5 antibody in a mouse endometriosis model.
- the vertical axis represents the lesion size (mm 2 ).
- the IL-5 antagonist used in the present invention is any one that blocks signal transduction between IL-5 and the IL-5 receptor and inhibits the biological activity of IL-5. Regardless of whether it is a good low molecule or high polymer. Examples thereof include an antibody that inhibits the binding between IL-5 and IL-5 receptor, or an antibody fragment thereof.
- An antibody that inhibits the binding between IL-5 and IL-5 receptor is an antibody that binds to IL-5 and inhibits the binding between IL-5 and IL-5 receptor. Examples thereof include an antibody that binds and inhibits the binding between IL-5 and IL-5 receptor.
- IL-5 receptor includes IL-5 receptor chain, IL-5 receptor / 3 chain, and the like.
- the antibody or antibody fragment used in the present invention may be either a polyclonal antibody or a monoclonal antibody, and preferably a monoclonal antibody.
- Monoclonal antibodies include antibodies produced by Hypridoma and genetically engineered antibodies.
- Hypridoma is a monoclonal antibody with the desired antigen specificity obtained by cell fusion of B cells obtained by immunizing mammals other than humans with myeloma cells. A cell that produces an antibody.
- Examples of the recombinant antibody include a human chimeric antibody, a humanized antibody, and a human antibody.
- the human chimeric antibody refers to an antibody comprising VH and VL of a non-human animal antibody and CH and CL of a human antibody.
- the CH of the human chimeric antibody may be any as long as it belongs to human immunoglobulin (hereinafter referred to as “hlg”), but the hlgG class is preferable, and hIgGl, hIgG2, and hIgG3 belonging to the hlgG class are preferred. Any of the subclasses such as hIgG4 can be used.
- CL of the human chimeric antibody may be any as long as it belongs to hlg, and those of ⁇ class or ⁇ class can be used.
- animals other than humans refer to mice, rats, hamsters, rabbits, and the like.
- a humanized antibody refers to an antibody obtained by grafting CDRs of VH and VL of an antibody from a non-human animal at an appropriate position of VH and VL of a human antibody, and is also called a human CDR-grafted antibody.
- the humanized antibody of the present invention is a cDNA encoding a V region in which the CDR of VH and VL of an antibody from a non-human animal is linked to the VH and VL framework of any human antibody (hereinafter referred to as FR). Is constructed, constructed, and inserted into an animal cell expression vector having cDNA encoding human antibody CH and CL, respectively, to construct a humanized antibody expression vector, which is expressed and produced by introduction into an animal cell. be able to.
- the CH of the humanized antibody may be any as long as it belongs to hlg, but the hlgG class is preferable, and any of the subclasses such as hIgGl, hIgG2, hIgG3, and hIgG4 belonging to the hlgG class. Can also be used.
- the CL of human rabbit antibody any CL / class or class belonging to hlg can be used.
- a human antibody originally refers to an antibody that naturally exists in the human body, but a human antibody phage library prepared by recent advances in genetic engineering, cell engineering, and developmental engineering techniques. Also included are antibodies obtained from human antibody-producing transgenic animals.
- the antibodies present in the human body can be isolated from human peripheral blood lymphocytes, infected with EB virus, immortalized, and cloned to cultivate lymphocytes producing the antibody alone. The antibody can be purified from the supernatant.
- a human antibody phage library can be obtained by inserting antibody genes prepared from human B cells into phage genes. A library in which antibody fragments such as are expressed on the phage surface.
- phages expressing an antibody fragment having the desired antigen-binding activity on the surface can be recovered using the binding activity to the substrate on which the antigen is immobilized as an index.
- the antibody fragment can be further converted into a human antibody molecule comprising two complete heavy chains and two complete light chains by genetic engineering techniques.
- a human antibody-producing transgenic animal means an animal in which a human antibody gene is incorporated into cells.
- a human antibody-producing transgenic mouse can be produced by introducing a human antibody gene into a mouse ES cell, transplanting the ES cell into an early mouse embryo, and generating it. Human antibody production from human antibody-producing transgenic animals is performed in normal non-human animals, and human antibody-producing hyperpridoma is obtained and cultured by the hyperidoma production method. Can generate and accumulate human antibodies.
- Examples of antibodies or antibody fragments that can be preferably used in the present invention include IL-5, IL-5, and IL-5 produced by NO, iBRIDOMA A TCC HB 10959 (Japanese Patent Laid-Open No. 2000-210097).
- IL-5 receptor produced by monoclonal antibodies that inhibit binding to 5 receptors, such as Hypridoma KM 1259 (FERM BP-5134, WO97 / 10354), Hypridoma KM 1486 (FERM BP_5651, WO97 / 10354), etc.
- IL-5 produced by Hypridoma BION-1 (ATCC HB-12525, WO00 / 0956 1), a monoclonal antibody that binds to the ⁇ chain and inhibits the binding of IL-5 to the IL-5 receptor Examples thereof include monoclonal antibodies that specifically bind to the receptor chain and inhibit the binding between IL-5 and IL-5 receptor, and antibody fragments thereof.
- Anti-human IL-5R short chain chimeric antibody comprising CDR1, CDR2, CDR3 of VL consisting of amino acid sequence shown in SEQ ID NOs: 4, 5, and 6
- An anti-HI-5R ⁇ -chain chimeric antibody comprising the amino acid sequence represented by SEQ ID NO: 7 and the amino acid sequence of Z or VL represented by SEQ ID NO: 8, the VH of the antibody is the amino acid sequence represented by SEQ ID NO: 7, and
- Humanized antibodies that bind to the IL-5 receptor ⁇ chain and inhibit the binding between IL-5 and IL-5 receptor include the amino acids represented by SEQ ID NOs: 24, 25, and 26, respectively.
- An antibody comprising CDR1, CDR2, CDR3 of VH consisting of amino acid sequences shown in 19, 20 and / or an amino acid sequence shown in SEQ ID NOs: 21, 22, and 23, respectively, and an antibody containing CDR1, CDR2, CDR3 of VL and
- antibody VH CDR1, CDR2, CDR3 and / or VL CDR1 each consisting of amino acid sequences represented by SEQ ID NOs: 4, 5, and 6, respectively, consisting of amino acid sequences IJ represented by SEQ ID NOs: 1, 2, 3 CDR2, C
- the VH of the antibody is the amino acid sequence represented by SEQ ID NO: 9, or the amino acid sequence represented by SEQ ID NO: 9, 40th Ala, 46th Glu, 67 Amino acid sequence in which at least one amino acid residue selected from No.
- Arg, 72nd Ala, 74th Thr, 79th Ala, 95th Tyr and 97th Ala is substituted with another amino acid residue Among the amino acid sequences shown in SEQ ID NO: 10 or the amino acid sequence shown in SEQ ID NO: 10, the 7th Ser, the 8th Pro, the 22nd Thr, 37 At least one amino acid residue selected from the Gln, 38th Gln, 44th Pro, 45th Lys, 71st Phe, 77th Ser, 87th Tyr and 98th Phe Humanization involving amino acid sequences substituted with amino acid residues Among the amino acid sequences shown in SEQ ID NO: 9, the VH of the antibody preferred by the body is 40th Ala, 46th Glu, 67th Arg, 72nd Ala, 74th Thr, 79th Ala The amino acid residue force S selected from 95th Tyr and 97th Ala, an amino acid sequence substituted with another amino acid residue, and the VL of the antibody is represented by SEQ ID NO: 10.
- a humanized antibody comprising an amino acid sequence in which at least one amino acid residue selected from the 87th Tyr and the 98th Phe is substituted with another amino acid residue.
- the VH of the antibody is 40th Ala, 46th Glu, 67th Arg, 72nd Ala, 74th Thr, 79th Ala, 95th Tyr and 97th Ala at least one amino acid residue force S, substituted with another amino acid residue 7 of amino acid sequences selected from amino acid sequences and amino acid sequences represented by SEQ ID NO: 10, 14, 15, 16, 17 and amino acid sequences represented by SEQ ID NO: 10, respectively.
- a humanized antibody comprising an amino acid sequence selected from the amino acid sequence substituted in the above, more specifically, a humanized antibody comprising an amino acid sequence represented by SEQ ID NO: 13 and VH represented by SEQ ID NO: 10, for example, KM8399 ( W 097/10354) and KM7399 (WO97 / 10354).
- a humanized antibody that binds to IL-5 and inhibits the binding between IL-5 and the IL-5 receptor mepolizumab (SB-240563; manufactured by Glaxo'SmithKline) , Reslizumab [Sch-55700; Schering 'Blau / Celtech Corp.], etc.
- mepolizumab SB-240563; manufactured by Glaxo'SmithKline
- Reslizumab S-55700; Schering 'Blau / Celtech Corp.
- An antibody or antibody fragment having substantially the same activity as the above-described antibody or antibody fragment is also encompassed by the antibody used in the present invention.
- the number of amino acids to be deleted, substituted, inserted and / or added is one or more, and the number is not particularly limited, but the molecular 'cloning 2nd edition, current protocols' in 'molecular' biology Nucleic Acids Research, 10, 6487 (1982), Proc. Natl. Acad. Sci "USA, 79, 6409 (1982), Gene, 34, 315 (1985), Nucleic Acids Research, 13, 4431 (1985), Proc. Natl. Acad. Sci USA, 82, 488 (1985), etc.
- the number is such that it can be deleted, substituted, or added by known techniques such as site-directed mutagenesis.
- amino acid sequence of the above antibody one or more amino acid residues are deleted, substituted, inserted or The term “added” means that there is a deletion, substitution, insertion or addition of one or more amino acid residues in any and one or more amino acid sequences in the same sequence.
- the amino acid residue to be substituted, inserted or added, which may be simultaneously substituted, inserted or added, may be a natural type or a non-natural type.
- Natural amino acid residues include L-alanine, L-asparagine, L-aspartic acid, L-gnoretamine, L-gnoletamic acid, glycine, L-histidine, L-isoleucine, L-leucine, L-lysine, L -Methionine, L-phenylalanine, L-proline, L-serine, L-threonine, L-tryptophan, L-tyrosine, L-valine, L-cystine and the like.
- amino acid residues that can be substituted with each other are shown below.
- the amino acid residues contained in the same group can be substituted for each other.
- Group A leucine, isoleucine, norleucine, valine, nonorevaline, alanine, 2-aminobutanoic acid, methionine, _methylserine, t_butylglycine, t-butylalanine, cyclohexenolealanine
- Group B aspartic acid, gnoretamic acid, isoaspartic acid, isognoletamic acid, 2-amino adipic acid, 2-aminosuberic acid
- Group D lysine, arginine, ornithine, 2,4-dianaminobutanoic acid, 2,3-dianaminopropionic acid
- Group E proline, 3-hydroxyproline, 4-hydroxyproline
- Group F serine, threonine, homoserine
- Group G phenylalanin, tyrosine
- Examples of the antibody fragment used in the present invention include Fab, Fab ', F (ab'), scFv, diabody, dsFv, and a peptide containing CDR.
- Fab is a fragment obtained by treating IgG-type antibody molecules with the proteolytic enzyme papain (cleaved at the 224th amino acid residue of the H chain). It is an antibody fragment having an antigen binding activity with a molecular weight of about 50,000 bound by a disulfide bond.
- the Fab used in the present invention can be obtained by treating an antibody with the proteolytic enzyme papain.
- DNA encoding the Fab of the antibody is used as a prokaryotic expression vector or It can be inserted into a eukaryotic expression vector and introduced into prokaryotic or eukaryotic organisms for expression and production.
- F (ab ') is a fragment obtained by treating an IgG antibody molecule with the proteolytic enzyme pepsin.
- F (ab ′) used in the present invention is obtained by treating an antibody with the proteolytic enzyme pepsin.
- Fab 'can be produced with a thioether bond or disulfide bond.
- Fab ' is an antibody having a molecular weight of about 50,000, which is obtained by cleaving the disulfide bond in the hinge region of F (ab').
- Fab ′ used in the present invention can be obtained by treating F (ab ′) with a reducing agent dithiothreitol.
- the DNA encoding the Fab ′ fragment of the antibody is inserted into a prokaryotic expression vector or a eukaryotic expression vector, and the vector is introduced into prokaryotic or eukaryotic cells to be expressed and produced. be able to.
- scFv is a VH-P-VL or VL-P-VH polypeptide in which one VH and one VL are linked using an appropriate peptide linker (hereinafter referred to as P).
- P an appropriate peptide linker
- the scFv used in the present invention obtains cDNA encoding the antibody VH and VL, constructs the DNA encoding scF V, and inserts the DNA into a prokaryotic expression vector or eukaryotic expression vector. It can be expressed and produced by introducing the expression vector into a prokaryotic or eukaryotic organism.
- a diabody is an antibody fragment obtained by dimerizing scFv, and is an antibody fragment having a bivalent antigen-binding activity.
- the bivalent antigen binding activity can be the same, or one can be a different antigen binding activity.
- the diabody used in the present invention obtains cDNA encoding the antibody VH and VL, constructs the DNA encoding scFv so that the length of the amino acid sequence of the linker is 8 residues or less, and DNA is inserted into prokaryotic expression vectors or eukaryotic expression vectors, It is possible to express and produce an expression vector by introducing it into a prokaryotic or eukaryotic organism.
- dsFv is obtained by binding a polypeptide in which one amino acid residue in each of VH and VL is substituted with a cysteine residue via a disulfide bond between the cysteine residues.
- the amino acid residue to be substituted for the cysteine residue can be selected based on the three-dimensional structure prediction of the antibody according to the method shown by Reiter et al. (Protein Enginee ring, 7, 697-704, 1994).
- the dsFv used in the present invention obtains cDNA encoding the antibody VH and VL, constructs DNA encoding dsFV, and inserts the DNA into a prokaryotic expression vector or eukaryotic expression vector. It can be expressed and produced by introducing the expression vector into a prokaryotic or eukaryotic organism.
- the peptide containing CDR is composed of at least one region of CDR of VH or VL. Peptides containing multiple CDRs can be linked directly or via an appropriate peptide linker.
- the peptide containing CDR used in the present invention constructs DNA encoding antibody VH and VL CDRs, inserts the DNA into a prokaryotic expression vector or eukaryotic expression vector, and the expression It can be expressed and produced by introducing the vector into prokaryotes or eukaryotes.
- a peptide containing CDR can also be produced by chemical synthesis methods such as F moc method (fluorenylmethyloxycarbonyl method) and tBoc method (t-butyloxycarbonyl method).
- An expression vector containing cDNA encoding a polypeptide that is an antigen can be introduced into E. coli, yeast, insect cells, animal cells, and expressed to obtain a recombinant protein, which can be used as an antigen.
- a synthetic peptide having a partial amino acid sequence of the polypeptide of the antigen can be used as the antigen.
- the partial peptide for antigen a protein partial sequence of about 5 to 30 residues is selected.
- the partial amino acid sequence present on the surface in the three-dimensional structure of the protein is used as an antigen.
- Select as a peptide As a method for analyzing the three-dimensional structure of a protein, there is a method for predicting a partially hydrophilic amino acid sequence having high hydrophilicity using commercially available protein sequence analysis software such as Geneticx Mac. Proteins generally have a low hydrophilic part in the protein in many cases due to the three-dimensional structure, and a high hydrophilic part often exists on the protein surface. In addition, the N- and C-termini of proteins often exist on the protein surface.
- Cystine is added to the end of the partial peptide in order to crosslink with the protein. If the internal sequence of the protein is selected as a partial peptide, the N-terminus of the peptide is acetylated and the C-terminus is amidated as necessary. Partial peptides can be synthesized by a general liquid phase, solid phase peptide synthesis method, a combination method thereof, or a method according to them (The Peptides, Analysis, Synthesis, Biology, Vol. 1, 1979). Vol. 2, 1980; Vol.
- Synthesis should be performed on a commercially available peptide synthesizer such as a peptide synthesizer using Na a -Fmoc-amino acid or Na a-Boc-amino acid with appropriately protected side chains according to the respective synthesis program. Can do.
- Protected amino acids and carrier resins as raw materials are obtained from ABI, Shimadzu Corporation, Kokusan Chemical Co., Ltd., Nova Biochem, Watanabe Chemical Co., ACT, or Peptide Research Institute Co., Ltd. That power S.
- protected amino acids, protected organic acids and protected organic amines as raw materials can be synthesized according to or according to reported synthetic methods (The Peptides, Analysis, Synthesis, Biology, Vol. 1, 1979; Vol. 2, 1980; Vol. 3, 1981, Academic Press; Peptide Synthesis Fundamentals and Experiments, Maruzen, 1985; Development of Drugs, 14th, Peptide Synthesis, Yodogawa, 1991; International Journal of Peptide & Protein Research , 35, 161 -214, 1990).
- Any animal can be used for immunization as long as it can produce a high-pridoma such as a mouse, rat, hamster, or rabbit.
- a high-pridoma such as a mouse, rat, hamster, or rabbit.
- mice and rats The following is an example of using mice and rats.
- a mouse or rat aged 3 to 20 weeks is immunized with the antigen prepared in 1 (1) above, and antibody-producing cells are collected from the spleen, lymph nodes, and peripheral blood of the animal. Immunization is performed by administering the antigen several times with an appropriate adjuvant subcutaneously, intravenously or intraperitoneally in an animal.
- adjuvants include Complete Freund's Adjuvant or aluminum hydroxide gel and pertussis vaccine.
- a conjugate with a carrier protein such as ushi serum albumin (hereinafter referred to as BSA) or Keyhole Limpet Hemocyanin (hereinafter referred to as KLH) can be prepared and used as an immunogen.
- blood is collected from the fundus venous plexus or tail vein of the immunized animal, and the reactivity to the antigen is confirmed by ELISA, etc.
- a source of production cells Three to seven days after the final administration of the antigen, the spleen is removed from the immunized mouse or rat according to a known method (Antibodies-A Laboratory Manual, Cold Spring Harbor Laboratory, 1988), and the antibody-producing cells and myeloma are removed. Fuse with cells.
- any type of myeloma cells can be grown with iii idim, such as 5-497, 1975).
- iii idim such as 5-497, 1975.
- a cell number of 2 ⁇ 10 ⁇ or more is secured by the time of cell fusion.
- a cell aggregating medium such as polyethylene glycol-1000 (hereinafter referred to as PEG-1000) is used to fuse the cells. Suspend in the medium.
- PEG-1000 Polyethylene glycol-1000
- MEM Modified Eagle's Medium
- PBS Phosphate Buffered Saline
- HAT medium normal medium [RPMI-1640 medium with 1.5 mM glutamine, 50 ⁇ M 2-mercaptoethanol, so that only the desired fused cells can be obtained selectively
- FBS fetal bovine serum
- the selection of a hyperidoma that produces an antibody that reacts with an antigen can be selected by ELISA according to a known method (Antibodies-A Laboratory Manual, old Spring Harbor Laboratory, 1988).
- ELISA Antibodies-A Laboratory Manual, old Spring Harbor Laboratory, 1988.
- the antibody contained in the culture supernatant of a transformant producing a human chimeric antibody, CDR-grafted antibody or antibody fragment thereof described later, or an antibody purified from the culture supernatant is bound to the antigen. Activity can be measured.
- the antigen is immobilized on a 96-well ELISA plate, and a culture supernatant such as hypridoma or a purified antibody is reacted as a primary antibody. After the first antibody reaction, wash the plate and add the second antibody.
- a second antibody an antibody in which an antibody capable of recognizing the first antibody is labeled with biotin, enzyme, chemiluminescent substance or radioisotope is used. Specifically, if a mouse is used in the production of the hybridoma, an antibody capable of recognizing a mouse antibody is used as the second antibody.
- a reaction according to the labeling substance of the second antibody is carried out to produce a hybridoma that produces a monoclonal antibody that reacts specifically with the antigen. To select.
- Production hybridoma cells 5 ⁇ 10 6 to 2 ⁇ 10 7 cells / mouse are injected intraperitoneally.
- Hypridoma becomes ascites tumor in 10-21 days.
- Ascites is collected from the mouse or nude mouse, centrifuged, salted out with 40-50% saturated ammonium sulfate, force prillic acid precipitation method, DEAE-Sepharose column, Protein A-column or Cell mouth fine GSL2000 (Biochemical Industry).
- the IgG or IgM fraction is collected using a column (manufactured by Kogyo Co., Ltd.) and used as a purified monoclonal antibody.
- the subclass of the purified monoclonal antibody can be determined using a mouse monoclonal antibody typing kit or a rat monoclonal antibody typing kit.
- the protein concentration can be calculated by the Raleigh method or the absorbance at 280 nm.
- Antibody subclasses are isotypes within a class, including IgG1, IgG2a, IgG2b, and IgG3 in mice, and IgG1, IgG2, IgG3, and IgG4 in humans.
- the binding activity of the monoclonal antibody purified in or from the culture supernatant to the antigen is measured by ELISA (1) (5) above and surface plasmon resonance (Journal of Immunologica 1 Methods, 145, 229-240, 1991) can do.
- the reactivity with the antigen and the antigen epitope can be analyzed by competitive ELISA using the antigen peptide or a partial peptide thereof.
- Whether or not the antibody recognizes the three-dimensional structure of the protein that is the antigen can be estimated by combining a three-dimensional structure analysis method or a variety of immunoassay methods that are usually performed. Examples of the three-dimensional structure analysis method include X-ray crystal analysis and nuclear magnetic resonance.
- Examples of a method for combining various immunoassays include a method in which an ELISA method for a non-denatured antigen and an ELISA method for a denatured antigen are combined. At this time, it is presumed that an antibody that reacts only with a non-denatured antigen is likely to recognize the three-dimensional structure of the antigen. it can.
- Examples of the ELISA method for a non-denatured antigen include an ELISA method in which a non-denatured antigen and an antibody are reacted in a liquid layer. Any ELISA method can be used for the denatured antigen, as long as the antigen does not retain its original conformation. For example, it can be immobilized directly on a hydrophobic reaction plate. ELISA methods for the antigens and partial peptides digested to an appropriate length.
- Polyclonal antibodies can be prepared from the sera of animals that have been immunized by the method shown in 1. (2) above and whose sera showed sufficient antibody titers.
- a serum fractionated by centrifugation from blood collected from the animal, or an immunoglobulin fraction can be purified from the serum according to a conventional method to prepare a polyclonal antibody.
- the activity of the polyclonal antibody can be evaluated for the binding activity to the antigen by the method described in 1. (7) above.
- Human-type chimeric antibodies and humanized antibody expression vectors are animal cells in which genes encoding CH and / or CL of human antibodies are incorporated. Any expression vector can be used.
- a humanized antibody expression vector can be constructed by cloning genes encoding human antibody CH and CL into an animal cell expression vector, respectively.
- the C region of the human antibody can be CH and CL of any human antibody, for example, the C region of the IgGl subclass of the H chain of the human antibody (hereinafter referred to as hC y 1) and the human antibody. C region of the ⁇ class of the L chain (hereinafter referred to as “hC ⁇ ”).
- hC ⁇ C region of the ⁇ class of the L chain
- chromosomal DNA consisting of exons and introns can be used, and cDNA can also be used.
- any expression vector can be used as long as it can incorporate and express a gene encoding the C region of a human antibody.
- pAGE107 (Cytotechnology, 3, 133-140, 1990)
- pAGE103 (Journal of Biochemistry, 101, 1307-131 0, 1987)
- pHSG274 (Gene, 27, 223-232, 1984)
- pKCR Proceedings of the National Academy of Sciences of the United States of America, 78, 1527-1531, 1981
- pSGl ⁇ d2-4 (Cytotechnology, 4, 173-180, 1990).
- Promoters and enhancers used for animal cell expression vectors include SV40 early promoter and enhancer (Journal of Biochemistry, 101, 1307-1310, 1987), Moroni mouse leukemia quinores LTR promoter and enhancer ( Biochemical & Biophysical Research Com munications, 149, 960-968, 1987), Immunoglobulin heavy chain promoter (Cell, 41, 47 9-487, 1985) and Enhancer (Cell, 33, 717-728, 1983) It is done.
- tandem type the type in which the antibody H chain and L chain are on separate vectors or the type on the same vector (hereinafter referred to as tandem type) can be used. Capability to construct human chimeric antibody expression vector and humanized antibody expression vector, ease of introduction into animal cells, balance of expression levels of antibody H and L chains in animal cells, etc. In view of the above, a tandem humanized antibody expression vector is preferred (Journal of Immunological Methods, 167, 271-278, 1994). Examples of tandem humanized antibody expression vectors include pKANTEX93 (WO97 / 10354) and pEE18 (Hybridoma, H, 559-567, 1998).
- the constructed humanized antibody expression vector can be used to express human chimeric antibodies and humanized antibodies in animal cells.
- Non-human animal antibodies for example, cDNAs encoding mouse antibody VH and VL can be obtained as follows.
- mRNA is extracted from Hypridoma, and cDNA is synthesized.
- the synthesized cDNA is cloned into a vector such as a phage or plasmid to prepare a cDNA library.
- the mouse region of the C region portion of the mouse antibody is a recombinant phage or cDNA having a cDNA encoding VH and a recombinant phage having a cDNA encoding VL or the V region portion as a probe. Isolate each recombinant plasmid.
- any animal such as a mouse, rat, hamster, or rabbit can be used as long as it can produce a high-pridoma.
- Methods for preparing total RNA from Hypridoma include guanidine thiocyanate-trifluoro-acetoacetate (Methods in Enzymology, 154, 3-28, 1987), and methods for preparing mRNA from total RNA include oligo (dT ) immobilized cellulose column method (Molecular Clo nmg:. ALaboratory Manual , and old spring Harbor Lab Press New York, 1989) and the like force 51.
- kits for preparing mRNA with high predoma ability include Fast Track mRNA Isolation Kit (manufactured by Invitrogen), Quick Prep mRNA Purification Kit (manufactured by Pharmacia), and the like.
- any vector can be used as a vector into which cDNA synthesized by using mRNA extracted from hypridoma as a saddle type can be incorporated.
- ZAP Express (Strategies, 5, 58-61, 1992), pBlue script II SK (+) (Nucleic Acids Research, 17,9494, 1989), ⁇ ⁇ II (Stratagene), ⁇ gtl0, ⁇ gtl l (DNA Cloning: A Practical Approach, I, 49, 1985), Lambda BlueMid (Clontech), ExCell, pT7T3 18U (Pharmacia), pcD2 (Molecular & Cellular Biology, 3, 280-289, 1983) And a phage or plasmid vector such as pUC18 (Gene, 33, 103-119, 1985) is used.
- introducing a cDNA library constructed by a phage or a plasmid vector As long as E. coli can introduce, express and maintain the cDNA library, it can be used.
- E. coli can introduce, express and maintain the cDNA library, it can be used.
- XLl-Blue MRF '(Journal of Biotechnology, 23, 271-289, 1992), C600 (Genetics, 59, 177-190, 1968), Y1088, Y1090 (Science, 222. 778-782, 1983), NM522 (Journal of Molecular Biology, 166, 1-19, 1983), K80 2 (Journal of Molecular Biology, 16, 118-133, 1966) and JM105 (Gene, 38, 275-27 6, 1985).
- a cDNA clone encoding VH and VL of an antibody of a non-human animal from a cDNA library is selected by using a radioisotope or fluorescently labeled probe. Selection can be made by the Chillon method or the plaque hybridization method (Molecular Cloning: A Laboratory Manual, old Spring Harbor Lab. Press New York, 1989). Primers are prepared and cDNA or cDNA library synthesized from mRNA is used as a template. Polymerase Chain Reaction (hereinafter referred to as PCR method and 3 ⁇ 4fEo; Molecular loning: A Laboratory Manual, Cold Spring Harbor Lab. Press New York, 1989; Current Protocols in Molecular Biology, Supplement 1-34), cDNAs encoding VH and VL can also be prepared.
- PCR method and 3 ⁇ 4fEo Polymerase Chain Reaction
- the cDNA selected by the above method is cleaved with an appropriate restriction enzyme or the like, and then cloned into a plasmid vector such as pBluescript SK (-) (Stratagene), and a commonly used nucleotide sequence analysis method such as dideoxy The method (Proceedings of the National Academy of Sciences of the United States of America, 74, 5463-5467, 1977) etc. is performed using an automated base sequence analyzer ABI PRISM 377 (ABI). By analysis, the nucleotide sequence of the cDNA can be determined.
- the length of the signal sequence and the N-terminal amino acid sequence can be estimated, and further, the subgroup to which they belong can be known.
- the amino acid sequences of CDRs of VH and VL should also be compared with the VH and VL amino acid sequences of known antibodies (Sequences of Proteins of Immunological Interest, US Dept. Health and Human Services, 1991). Can be found by: [0075]
- the BLAST method Journal of Molecular Biology, 21 5, 403-410, 1990
- the complete amino acid sequences of VH and VL such as SWISS-PROT and PIR-Protein. The novelty of the sequence can be examined by performing a homology search of such sequences.
- the cDNA encoding the VH and VL of the non-human animal antibody is cloned upstream of the gene encoding the human antibody CH and CL of the human antibody antibody expression vector described in 3 (1) above, and human Type chimeric antibody expression vectors can be constructed.
- a cDNA encoding the VH and VL of a non-human animal antibody is obtained by using the nucleotide sequence of the 3 'end of the VH and VL of the non-human animal antibody and the base of the 5' end of CH and CL of the human antibody Each of which is linked to a synthetic DNA having a recognition sequence for an appropriate restriction enzyme at both ends, and each of them is linked to the human antibody CH and the humanized antibody expression vector described in 3 (1) above.
- a human chimeric antibody expression vector can be constructed by cloning it so that it is expressed in an appropriate form upstream of the gene encoding CL.
- a plasmid containing cDNA encoding VH and VL of an antibody from a non-human animal is used as a template, and VH and VL are obtained by PCR using a primer having an appropriate restriction enzyme recognition sequence at the 5 'end. Amplify the encoded cDNA, and clone each so that they are expressed in an appropriate form upstream of the gene encoding the human antibody CH and CL of the humanized antibody expression vector described in 3 (1) above.
- a human chimeric antibody expression vector can be constructed.
- the cDNA encoding the human rabbit antibody VH and VL can be constructed as follows. First, the VH and VL CDR amino acid sequences of the target non-human animal antibody VH and VL CDRs are selected. As the amino acid sequences of human antibody VH and VL FR, any amino acid sequence derived from a human antibody can be used. For example, human amino acid VH and VL FR amino acid sequences IJ and human antibody VH and VL FR amino acid sequences registered in databases such as Protein Data Bank (Sequences of Proteins of Proteins of Immunological Interest, US Dept.
- Humanized antibodies can be obtained by transplanting only the VH and VL CDRs of the target non-human animal antibody into the VH and VL FRs of the human antibody, and their antigen-binding activity is comparable to that of the original non-human animal antibody. (BIO / TECHNOLOGY, 9, 266-271, 1991). This is because the VH and VL of the original non-human animal antibody have not only CDRs but also FR residues and some amino acid residues directly or indirectly related to antigen-binding activity. These amino acid residues are considered to change to different amino acid residues of FR of human antibody VH and VL with CDR grafting.
- humanized antibodies interact directly with the amino acid residues involved in antigen binding or CDR amino acid residues in the VH and VL FR amino acid sequences of human antibodies. Or the amino acid residues that maintain the three-dimensional structure of the antibody and are indirectly involved in antigen binding, They have been modified to amino acid residues found in the original non-human animal antibodies to increase the reduced antigen binding activity (BIO / TECHNOLOGY, 9, 266-271, 1991). In the production of humanized antibodies, the most important point is how to efficiently identify the FR amino acid residues involved in these antigen-binding activities.
- Modification of FR amino acid residues of human antibody VH and VL can be achieved by performing the PCR method described in the above 3 (4) using the synthetic DNA for modification. Determine the nucleotide sequence of the amplified product after PCR by the method described in 3 (2) above, and confirm that the target modification has been performed.
- VH and VL of the humanized antibody constructed in 3 (4) and (5) above are upstream of the gene encoding the human antibody CH and CL of the vector for expression of the human ⁇ antibody described in 3 (1) above.
- the cDNA to be coded can be cloned to construct a human rabbit antibody expression vector.
- human chimeric antibody expression vector and humanized antibody expression described in (3) and (6) above are used.
- Human-type chimeric antibodies using vectors or modified expression vectors Transient expression of human and humanized antibodies can be performed.
- any cell that can express human chimeric antibodies and humanized antibodies can be used in any cell. Because of its high expression level, COS-7 cells ( ATCC C RL1651) is commonly used (Methods in Nucleic Acids Research, CRC press, 283, 1991).
- Methods for introducing expression vectors into C0_S_7 cells include the DEAE-dextran method (Met hods in Nucleic Acids Research, CRC press, 283, 1991) and the lipofuxion method (Proceedings of the National Academy of Sciences of the United States of America, 84, 741 3-7417, 1987).
- the expression levels and antigen-binding activity of the human chimeric antibody and humanized antibody in the culture supernatant were determined by ELISA (Antibodies: A Laboratory Manual, Cold Spring Harbor Laboratory, Chapter 14, 1988; Monoclonal Antibodies: Principles and Practice, Aca demic Press Limited, 1996).
- Transformed cells that stably express human chimeric antibody and humanized antibody by introducing the human chimeric antibody expression vector and humanized antibody expression vector described in 3 (3) and (6) above into an appropriate host cell Can be obtained.
- An example of a method for introducing an expression vector into a host cell is the electoporation method (Cytotechnology, 3, 133-140, 1990).
- a host cell into which the human chimeric antibody expression vector and humanized antibody expression vector are introduced any host cell capable of expressing the human chimeric antibody and humanized antibody can be used.
- mouse SP2 / 0-Agl4 cells (ATCC CRL1581), mouse P3X63-Ag8.653 cells (ATCC CRL1580), dihydrofolate reductase gene (hereinafter referred to as CHO cells) (Proceedings of the National al Academy of Sciences of the United States of America, 77-4216-4220, 1980), rat YB2 / 3H and P2.Gl.16Ag.20 cells (ATCC CRL1662, hereinafter referred to as YB2 / 0 cells) can give.
- CHO cells mouse SP2 / 0-Agl4 cells
- ATCC CRL1580 mouse P3X63-Ag8.653 cells
- CHO cells dihydrofolate reductase gene
- rat YB2 / 3H and P2.Gl.16Ag.20 cells (ATCC CRL1662, hereinafter referred to as YB2 / 0 cells) can give.
- a transformant that stably expresses the human chimeric antibody and the humanized antibody is prepared according to the method disclosed in JP-A-2-257891, G418 sulfate (hereinafter referred to as G41 8).
- Animal cell culture media include RPMI1640 medium (manufactured by Nissui Pharmaceutical), GIT medium (manufactured by Nippon Pharmaceutical), EX-CELL302 medium (manufactured by JRH), IMDM (GIBCO BRL), Hybridoma-SFM (GIBCO BRL) or a medium in which various additives such as FBS are added to these mediums can be used.
- RPMI1640 medium manufactured by Nissui Pharmaceutical
- GIT medium manufactured by Nippon Pharmaceutical
- EX-CELL302 medium manufactured by JRH
- IMDM GIBCO BRL
- Hybridoma-SFM GIBCO BRL
- FBS Hybridoma-SFM
- the expression level and antigen binding activity of the human chimeric antibody and humanized antibody in the culture supernatant can be measured by ELISA.
- Transformed cells can increase the expression levels of human chimeric antibodies and humanized antibodies using a di ⁇ amplification system according to the method disclosed in JP-A-2-257891.
- Human chimeric antibodies and humanized antibodies can be purified from the culture supernatant of transformed cells using protein A columns (Antibodies: A Laboratory Manual, Cold Spring Harbor Laboratory, Chapter 8, 1988). Monoclonal Antibodies: Principles and Practice, A cademic Press Limited, 1996).
- a purification method usually used in protein purification can be used. For example, it can be purified by a combination of gel filtration, ion exchange chromatography and ultrafiltration.
- the molecular weight of the purified human chimeric antibody and humanized antibody H chain, L chain, or whole antibody molecule is expressed by polyacrylamide gel electrophoresis (hereinafter referred to as PAGE: Nature, 227, 680-685, 1970) and Western Prozaink method (Antibodies: A Laboratory Manual, Cold spring Harbor Laboratory, Chapter 12, 1988; Monoclonal Antibodies: Principles and Practice, Academic Press Limited, 1996).
- the evaluation of the binding activity between the human chimeric antibody and the humanized antibody and the antigen can be performed using the EUSA described above.
- Antibody fragments can be produced by genetic engineering techniques or protein chemistry techniques based on the antibodies described in 1 and 3 above.
- a gene encoding a target antibody fragment should be constructed, and expressed and purified using an appropriate host such as an animal cell, plant cell, insect cell, or E. coli. Which method is given.
- protein chemistry techniques include site-specific cleavage and purification methods using proteolytic enzymes such as pepsin and nopain.
- a method for producing a peptide containing Fab, F (ab '), Fab'. ScFv, diabody, dsFv, and CDR as antibody fragments will be specifically described below.
- Fab can be produced proteolytically by treating IgG with the proteolytic enzyme papain. After papain treatment, if the original antibody is an Ig G subclass with protein A binding properties, it can be separated from IgG molecules and Fc fragments by passing through a protein A column and recovered as a uniform Fab ( Monoclonal Antibodies: Principles and Practice, third edition, 1995). For IgG subclass antibodies that do not have protein A binding, Fab can be recovered in fractions eluted at low salt concentrations by ion exchange chromatography (Monoclonal Antibodies: Principles and Practice, third edition, 1995) 0
- Fab can be produced mostly using Escherichia coli, or using insect cells or animal cells.
- DNA encoding the V region of the antibody described in 3 (2), 3 (4) and 3 (5) above can be cloned into a Fab expression vector to produce a Fab expression vector.
- Any Fab expression vector can be used as long as it can incorporate and express Fab DNA.
- An example is pIT106 (Science, 240, 1041-1043, 1988).
- Fab expression vectors can be introduced into appropriate E. coli to produce and accumulate Fabs in inclusion bodies or periplasm.
- Inclusion bodies can be made into active Fabs by the refolding method usually used in proteins, and when expressed in periplasm, active Fabs leak into the culture supernatant. . After refolding or from the culture supernatant, a uniform Fab can be purified by using a column to which an antigen is bound (Antibody Engineering, A Practical uide, W. H. Freeman and ompany, 1992).
- F (ab ') is protein-chemically processed by treating IgG with the proteolytic enzyme pepsin. Can be produced. After treatment of the pepsin, by the same purification operation as Fab, can be force s recovered as uniform F (ab ') (Monoclonal Antibodies : Principles and Practice, t hird edition, Academic Press, 1995).
- Fab ′ described in 4 (3) below is treated with maleimide such as o-PDM or bismaleimide hexane and thioether bond, or DTNB [5,5′-dithiobis (2-nitrobenzoic acid) It can also be prepared by the method of treating with SS and bonding with SS (Antibody Engineering, A Practical Approach, IRL PRESS, 199 6).
- maleimide such as o-PDM or bismaleimide hexane and thioether bond
- DTNB 5,5′-dithiobis (2-nitrobenzoic acid
- Is Fab 'described in 4 (2) above? Can be obtained by treating with a reducing agent such as dithiothreitol.
- Fab ' can be produced by genetic engineering, mostly using Escherichia coli, insect cells and animal cells.
- DNA encoding the V region of the antibody described in 3 (2), 3 (4) and 3 (5) above can be cloned into a Fab ′ expression vector to produce a Fab or expression vector.
- the Fab ′ expression vector any vector can be used as long as it can incorporate and express Fab ′ DNA.
- An example is pAK19 (BIO / TECHNOLOGY, 10, 163-167, 1992).
- Fab 'expression vectors can be introduced into appropriate E.
- coli and Fab' can be produced and accumulated in inclusion bodies or periplasm.
- Inclusion bodies can be made into active Fab 'by the refolding method normally used for proteins.
- treatment with partial lysozyme digestion, osmotic shock, sonication, etc. By using this method, the bacteria can be crushed and collected outside the cells.
- Uniform Fab ' can be purified after refolding or from the bacterial lysate using a protein G column or the like (Antibody Engineering, A Practical Approach, IRL PRESS, 1996).
- scFv can be prepared by genetic engineering using phage or E. coli, insect cells, animal cells, and the like.
- a DNA encoding the V region of the antibody described in 3 (2), 3 (4) and 3 (5) above can be cloned into an scFv expression vector to prepare an scFv expression vector.
- the scFv expression vector any vector can be used as long as it can incorporate and express scFv DNA.
- pCANTAB5E Phar macia
- HFA Human Antibodies & Hybridomas, 5, 48-56, 1994.
- scFv By introducing the scFv expression vector into appropriate Escherichia coli and infecting the helper phage, it is possible to obtain a phage that expresses scFv fused to the phage surface protein on the phage surface.
- scFv can be generated and accumulated in inclusion bodies or periplasm of E. coli into which the scFv expression vector has been introduced. Inclusion bodies can be converted into active scFv by the refolding method normally used for proteins.
- treatments include partial digestion with lysozyme, osmotic shock, and sonication. The bacteria can be crushed and recovered outside the cells. Uniform scFv can be purified from lysates after refolding or from bacteria by using cation exchange chromatography (Antibody Engineering, A Practical Approach, IRL PR ESS, 1996).
- a diabody can be produced by genetic engineering, mostly using Escherichia coli, insect cells and animal cells.
- a DNA in which VH and VL of the antibody described in 3 (2), 3 (4) and 3 (5) above are linked so that the amino acid residue encoded by the linker is 8 residues or less is prepared.
- the diabody expression vector can be prepared by cloning into a diabody expression vector. Any diabody expression vector can be used as long as it can incorporate and express diabody DNA.
- pCANTAB5E manufactured by Pharmacia
- pHFA Human Antibodies Hybridomas, 5, 48, 1994
- Inclusion bodies can be made into active diabodies by the refolding method usually used for proteins. When expressed in the periplasm, partial digestion with lysozyme, osmotic shock, sonication, etc. By this treatment, the bacteria can be crushed and recovered outside the cells. Uniform scFv can be purified after refolding or from the bacterial disruption solution by using cation exchange chromatography (Antibody Engineering, A Practical Approach, IRL PRESS, 1996).
- dsFv is genetically engineered, mostly using Escherichia coli, insect cells and animal cells. Can be produced. First, mutations are introduced at appropriate positions in the DNAs encoding VH and VL of the antibodies described in 3 (2), 3 (4) and 3 (5) above, and the encoded amino acid residues are changed to cysteine. Make the substituted DNA. Each of the prepared DNAs can be cloned into a dsFv expression vector to prepare VH and VL expression vectors. Any dsFv expression vector can be used as long as it can incorporate and express dsFv DNA. For example, pULI9 (Protein Engineering, 7, 697-704, 1994). VH and VL expression vectors can be introduced into appropriate E.
- coli and dsFv can be produced and accumulated in inclusion bodies or periplasm.
- Inclusion bodies or periplasmic force VH and VL can be obtained, mixed, and converted into active dsFv by the refolding method usually used for proteins. Refolding after, by an ion exchange chromatography and gel filtration, it can be further purified (Protein Engineering, 7, 697-704, 1994) 0
- Peptides containing CDRs can be produced by chemical synthesis methods such as Fmoc method or tBoc method.
- a DNA encoding a peptide containing CDR can be prepared, and the prepared DNA can be cloned into an appropriate expression vector to prepare a CDR peptide expression vector.
- Any expression vector may be used as long as it can incorporate and express DNA encoding the CDR peptide. Examples thereof include pLEX (manufactured by Invitrogen), pAX4a + (manufactured by Invitrogen), and the like.
- the expression vector can be introduced into appropriate E. coli and produced and accumulated in inclusion bodies or periplasm.
- CDR peptides can be obtained from inclusion bodies or periplasm and purified by ion exchange chromatography and gel filtration (Protein Engineering, 7, 697-704, 1994).
- the evaluation of the binding activity between the purified antibody fragment and the antigen can be performed using the ELISA described in 1 (7) above.
- the therapeutic agent for endometriosis of the present invention may be any drug that contains an IL-5 antagonist as an active ingredient, but is usually one that is pharmacologically acceptable or It is desirable to provide it as a pharmaceutical preparation produced by any method well known in the pharmaceutical arts, mixed with further carriers.
- a sterile solution dissolved in water or an aqueous carrier such as an aqueous solution of sodium chloride, glycine, gnolecose, human albumin or the like is used.
- pharmacologically acceptable additives such as buffering agents and isotonic agents for bringing the formulation solution close to physiological conditions, such as sodium acetate, sodium chloride salt, sodium lactate, potassium chloride. Sodium quenate and the like can also be added. It can also be frozen and stored, and dissolved in an appropriate solvent before use.
- the administration route of the therapeutic agent of the present invention is preferably the most effective in the treatment, orally, or intraoral, respiratory tract, rectal, subcutaneous, intramuscular and intravenous. Intravenous administration is preferred, although parenteral administration can be given.
- Suitable formulations for oral administration include emulsions, syrups, capsules, tablets, powders, granules and the like.
- Liquid preparations such as emulsions and syrups include saccharides such as water, sucrose, sorbitol and fructose, glycols such as polyethylene glycol and propylene glycol, oils such as sesame oil, olive oil and soybean oil, p- It can be produced using preservatives such as hydroxybenzoic acid esters, and flavors such as strawberry flavor and peppermint as additives.
- excipients such as lactose, glucose, sucrose and mannitol, disintegrants such as starch and sodium alginate, lubricants such as magnesium stearate and talc, polyvinyl alcohol It can be produced using a binder such as hydroxypropyl cellulose and gelatin, a surfactant such as fatty acid ester, and a plasticizer such as glycerin as additives.
- Suitable preparations for parenteral administration include injections, suppositories, sprays and the like.
- an injection is prepared using a carrier comprising a salt solution, a glucose solution, or a mixture of both.
- Suppositories are prepared using a carrier such as cacao butter, hydrogenated fat or carboxylic acid.
- the spray is prepared using a carrier that does not irritate the antagonist itself or the recipient's oral cavity and airway mucosa, and that disperses the antagonist as fine particles to facilitate absorption.
- Specific examples of the carrier include lactose and glycerin.
- preparations such as aerosols and dry powders are possible.
- these parenteral agents are also exemplified as additives in oral agents. Ingredients can also be added.
- the dose or frequency of administration of the therapeutic agent of the present invention varies depending on the intended therapeutic effect, administration method, treatment period, age, body weight, etc., but usually 10 ⁇ g / kg to 10 mg / kg per day for an adult It is.
- the excised uterus (tubular) was longitudinally opened into a sheet while being washed in Dulbecco's 'Modified' Eagle 'medium (INVITROGEN) containing penicillin' streptomycin (INVITROGEN).
- An endometrial piece with a sheet force of about 2 mm square was prepared.
- the prepared endometrial pieces were autografted on the left and right peritoneum using sterilized suture needles (surgical weak heel needle No.12-black nylon No.6-0, Natsume Seisakusho). At this time, transplantation was performed so that the endometrial surface was in contact with the peritoneum.
- adipose tissue of the same size as the endometrial segment was excised with the same individual strength and the peritoneum was removed. In the same way, it was autotransplanted. Finally, the transplantation site and the hysterectomy site were washed with physiological saline containing Sagamicin ( R ) injection solution (manufactured by Kyowa Hakko Kogyo Co., Ltd.), and immediately the peritoneum and skin were carefully sutured with a suture needle with a sterile thread.
- Sagamicin ( R ) injection solution manufactured by Kyowa Hakko Kogyo Co., Ltd.
- lmg / kg anti-mouse IL-5 receptor antibody and anti-mouse IL-5 antibody were used as test drugs, and lmg / kg rat IgG antibody was used as a control antibody. (ICN) were used. The antibody was used after diluting with a phosphate buffer (ICN) sterilized.
- the results for graft size are shown in Table 1.
- the graft size was calculated by multiplying the vertical diameter and horizontal diameter, and the left and right graft sizes were averaged.
- Anti-IL-5 antibody 1 Intravenous Immediately before transplantation 14. 4 Sat 1. 1
- the excised uterus (tubular) was longitudinally opened into a sheet while being washed in Dulbecco's 'Modified' Eagle 'medium (INVITROGEN) containing penicillin' streptomycin (INVITROGEN).
- An endometrial piece with a sheet force of about 2 mm square was prepared.
- the prepared endometrial pieces were autografted on the left and right peritoneum using sterilized suture needles (surgical weak heel needle No.12-black nylon No.6-0, Natsume Seisakusho). At this time, transplantation was performed so that the endometrial surface was in contact with the peritoneum.
- an adipose tissue of the same size as the endometrial piece was excised by the same individual force and transplanted to the peritoneum in the same manner.
- the transplantation site and the hysterectomy site were washed with physiological saline containing micronomycin (Sagamicin ( R ) injection solution, manufactured by Kyowa Hakko Kogyo Co., Ltd.), and immediately the peritoneum and skin were carefully removed with a sterile suture needle. Sutured.
- Adhesion score One week after autotransplantation, blood was lethal under ether anesthesia, the abdomen was opened, and a macroscopic evaluation (adhesion score) of endometrial lesions was performed. Adhesions were scored according to the following criteria.
- the test was conducted with 5 animals per group. If necessary, follow the standard method for pathological specimens at the transplant site. And histopathological analysis was performed.
- the results for the adhesion score at the lesion site are shown in Table 2.
- the adhesion score was given as a score, and the adhesion scores of the left and right grafts were averaged.
- Troll antibody 1 Intravenous 1 time just before phlegm 1.4 4 0.5
- Anti-IL-5 receptor antibody 1 Intravenous 1 time just before transplantation 1.0 0 0 4
- Anti-mouse IL-5 receptor antibody inhibits endometriosis in mice with endometriosis model
- mice (Nippon Tires' Riba Co., Ltd.), 8 weeks of age or older, that are considered to be sexually mature in mice, were used in the experiment. After a habituation period of 1 week after purchase, all individuals were exogenously administered with estrogen after left and right oophorectomy were performed in order to make the sex hormone environment uniform.
- pentobarbital Somnopentyl (R) , Takeda Shilling 'Puraua Cut the dorsal skin of a mouse anesthetized by intraperitoneal injection of 50 mg / kg approximately 1 cm along the midline, and cut into the peritoneum at the location of the left and right ovaries (approximately 3 mm) ) After removing both ovaries from the cuts, the dorsal skin was quickly sewn and returned to the cage. Thereafter, estrogen (Proginon (R). Depot 10 mg, Japanese Schering, estradiol valerate injection solution) 100 xg / kg was injected into the left hind limb muscle. By this treatment, it was confirmed that the uterus was enlarged to the same weight as the mouse uterus in the early estrus, which is the high-strength strogen out of the sexual cycle observed in the 4-day cycle.
- Somnopentyl (R) Takeda Shilling 'Puraua Cut the dors
- an anti-mouse IL-5 receptor antibody (International Immunology, 3 (2 ⁇ : 135-9, 1991, 10 mg / kg, administered once a week) was used as a positive control group.
- Rat IgG antibody (ICN, 10 mg / kg, once weekly administration) was used as a control antibody.
- the solution was diluted with a physiological saline injection solution (manufactured by Otsuka Pharmaceutical Co., Ltd.).
- the anti-mouse IL-5 receptor antibody showed a significant inhibitory action compared to the positive control group.
- small intestinal mucosa pieces of the same weight were seeded instead of endometrial pieces, no lesions were formed even by administration of estrogen.
- Anti-mouse IL-5 antibody showed a significant inhibitory effect in the 10 mg / kg administration group compared to the positive control group.
- the present invention can provide a therapeutic agent for endometriosis containing an interleukin-5 antagonist as an active ingredient.
- SEQ ID NO: 10 Description of artificial sequence: antibody light chain variable region amino acid sequence
- SEQ ID NO: 11 Description of artificial sequence: antibody heavy chain variable region amino acid sequence
- SEQ ID NO: 12-description of artificial sequence antibody heavy chain variable region amino acid sequence
- SEQ ID NO: 13-description of artificial sequence antibody heavy chain variable region amino acid sequence
- SEQ ID NO: 14-description of artificial sequence antibody light chain variable region amino acid sequence
- SEQ ID NO: 15-Description of artificial sequence antibody light chain variable region amino acid sequence
- SEQ ID NO: 16-Description of artificial sequence antibody light chain variable region amino acid sequence
- SEQ ID NO: 17-Description of artificial sequence antibody light chain variable region amino acid sequence
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- Peptides Or Proteins (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
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Abstract
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Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2585977A CA2585977C (en) | 2004-10-28 | 2005-10-28 | Remedy for endometriosis |
JP2006543289A JP4954709B2 (ja) | 2004-10-28 | 2005-10-28 | 子宮内膜症治療剤 |
KR1020077011916A KR101206318B1 (ko) | 2004-10-28 | 2005-10-28 | 자궁 내막증 치료제 |
EP05799028A EP1810690B1 (en) | 2004-10-28 | 2005-10-28 | Anti-IL-5 receptor antibody for use in treating endometriosis. |
US11/666,695 US8192736B2 (en) | 2004-10-28 | 2005-10-28 | Remedy for endometriosis |
AU2005297803A AU2005297803B2 (en) | 2004-10-28 | 2005-10-28 | Remedy for endometriosis |
AT05799028T ATE541585T1 (de) | 2004-10-28 | 2005-10-28 | Antikörper gegen il-5-rezeptor zur verwendung in der behandlung von endometriose. |
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JP2004-314031 | 2004-10-28 | ||
JP2004314031 | 2004-10-28 | ||
JP2005-169027 | 2005-06-09 | ||
JP2005169027 | 2005-06-09 |
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US (1) | US8192736B2 (ja) |
EP (1) | EP1810690B1 (ja) |
JP (1) | JP4954709B2 (ja) |
KR (1) | KR101206318B1 (ja) |
AT (1) | ATE541585T1 (ja) |
AU (1) | AU2005297803B2 (ja) |
CA (1) | CA2585977C (ja) |
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Cited By (1)
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WO2019062831A1 (zh) | 2017-09-29 | 2019-04-04 | 江苏恒瑞医药股份有限公司 | Il-5抗体、其抗原结合片段及医药用途 |
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EP2332995A1 (en) * | 2009-12-10 | 2011-06-15 | Bayer Schering Pharma Aktiengesellschaft | Neutralizing prolactin receptor antibodies and their therapeutic use |
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US5453491A (en) * | 1990-09-11 | 1995-09-26 | Kiyoshi Takatsu | Murine interleukin-5 receptor |
NZ301916A (en) * | 1994-12-23 | 1999-05-28 | Smithkline Beecham Corp | Monoclonal antibodies to il-5 for use as antagonists to il-5 related disorders |
US5783184A (en) * | 1994-12-23 | 1998-07-21 | Smithkline Beecham Corporation | Method for treatment and diagnosis of IL-5 mediated disorders |
JP4074427B2 (ja) * | 2000-12-18 | 2008-04-09 | 株式会社栃木臨床病理研究所 | 子宮内膜症の予防又は治療薬 |
-
2005
- 2005-10-28 AU AU2005297803A patent/AU2005297803B2/en not_active Ceased
- 2005-10-28 KR KR1020077011916A patent/KR101206318B1/ko active IP Right Grant
- 2005-10-28 WO PCT/JP2005/019871 patent/WO2006046689A1/ja active Application Filing
- 2005-10-28 EP EP05799028A patent/EP1810690B1/en not_active Not-in-force
- 2005-10-28 US US11/666,695 patent/US8192736B2/en active Active
- 2005-10-28 JP JP2006543289A patent/JP4954709B2/ja active Active
- 2005-10-28 CA CA2585977A patent/CA2585977C/en not_active Expired - Fee Related
- 2005-10-28 AT AT05799028T patent/ATE541585T1/de active
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JPH02257891A (ja) | 1989-03-31 | 1990-10-18 | Kyowa Hakko Kogyo Co Ltd | 組換え動物細胞による蛋白質の製造 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2019062831A1 (zh) | 2017-09-29 | 2019-04-04 | 江苏恒瑞医药股份有限公司 | Il-5抗体、其抗原结合片段及医药用途 |
Also Published As
Publication number | Publication date |
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EP1810690B1 (en) | 2012-01-18 |
JPWO2006046689A1 (ja) | 2008-05-22 |
US8192736B2 (en) | 2012-06-05 |
CA2585977A1 (en) | 2006-05-04 |
KR20070073936A (ko) | 2007-07-10 |
US20090252723A1 (en) | 2009-10-08 |
JP4954709B2 (ja) | 2012-06-20 |
AU2005297803A1 (en) | 2006-05-04 |
EP1810690A1 (en) | 2007-07-25 |
EP1810690A4 (en) | 2008-04-09 |
KR101206318B1 (ko) | 2012-11-29 |
ATE541585T1 (de) | 2012-02-15 |
CA2585977C (en) | 2013-07-02 |
AU2005297803B2 (en) | 2011-06-16 |
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