WO2008096905A1 - 抗brak(cxcl14)ヒトモノクローナル抗体及びその用途 - Google Patents
抗brak(cxcl14)ヒトモノクローナル抗体及びその用途 Download PDFInfo
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- WO2008096905A1 WO2008096905A1 PCT/JP2008/052603 JP2008052603W WO2008096905A1 WO 2008096905 A1 WO2008096905 A1 WO 2008096905A1 JP 2008052603 W JP2008052603 W JP 2008052603W WO 2008096905 A1 WO2008096905 A1 WO 2008096905A1
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- cxcl14
- antibody according
- obesity
- diabetes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
- G01N33/6863—Cytokines, i.e. immune system proteins modifying a biological response such as cell growth proliferation or differentiation, e.g. TNF, CNF, GM-CSF, lymphotoxin, MIF or their receptors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/04—Anorexiants; Antiobesity agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/435—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans
- G01N2333/705—Assays involving receptors, cell surface antigens or cell surface determinants
- G01N2333/715—Assays involving receptors, cell surface antigens or cell surface determinants for cytokines; for lymphokines; for interferons
- G01N2333/7158—Assays involving receptors, cell surface antigens or cell surface determinants for cytokines; for lymphokines; for interferons for chemokines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/04—Endocrine or metabolic disorders
- G01N2800/042—Disorders of carbohydrate metabolism, e.g. diabetes, glucose metabolism
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/04—Endocrine or metabolic disorders
- G01N2800/044—Hyperlipemia or hypolipemia, e.g. dyslipidaemia, obesity
Definitions
- the present invention relates to an antibody recognizing BRAK (Breast and Kidney expressed chemokine) and use thereof.
- BRAK Breast and Kidney expressed chemokine
- metabolic syndrome In recent years, the number of patients with diabetes that develops closely related to obesity (especially “type 2 diabetes, which exhibits insulin resistance”) has been increasing worldwide. Along with this, hypertension and arteriosclerosis are also increasing. These onset mechanisms are presumed to be due to the comprehensive breakdown of fat metabolism and hormone regulation, and are now collectively referred to as metabolic syndrome.
- Non-Patent Documents 1 and 2 Recently, gene expression analysis using white adipose tissue of obese mice and patients revealed that macrophages in white adipose tissue play an important role in the induction of obesity and the accompanying insulin resistance.
- TNF was first produced from these mouth-mouth phages, and glucose absorption by insulin was suppressed.
- secretion of inflammatory cytokines such as IL-1 and IL-6 increased, leading to a chronic inflammatory state (see Non-Patent Documents 3 and 4).
- insulin resistance due to obesity was improved in mice that disrupted TNF o; or its receptor (see Non-Patent Document 5).
- the hybridoma cell described in (2) above is cultured in vivo or in vitro, and the antibody described in (1) above is collected from the body fluid or culture, Production method of listed antibody.
- a diagnostic agent comprising the antibody according to (1) above.
- the diagnostic agent of the present invention can be used, for example, for the diagnosis of type 2 diabetes and / or obesity.
- a medicament comprising the antibody according to (1) above.
- a method for preventing / treating type 2 diabetes and Z or obesity which comprises administering an effective amount of the antibody according to (1) above to a mammal.
- a method for promoting the reduction of the number of macrophages in white adipose tissue which comprises administering an effective amount of the antibody according to (1) above to a mammal.
- a method for improving insulin resistance comprising administering an effective amount of the antibody according to (1) above to a mammal.
- Figure 1 shows the data on the chemotaxis of C2C12 cells or Forskolin-stimulated C2C12 cells to CXCL14. After 6 hours of cultivation, the number of cells that migrated from the inside of the Chemotaxicell microchamber to the backside was measured and tested for statistical significance. The graph shows the average soil standard error for each group.
- Fig. 2 shows data obtained by examining whether the chemotaxis of Forskolin-stimulated C2C12 cells to CXCL14 is neutralized by the addition of an anti-mouse CXCL14-specific antibody. After 6 hours of incubation, the number of cells that migrated from the inside of the microchamber to the backside was measured and tested for statistical significance. The graph shows the average soil standard error of each group.
- FIG. 3 shows data examining whether the chemotaxis of Forskolin-stimulated THP-1 cells to CXCL14 is neutralized by the addition of an anti-mouse CXCL14-specific antibody. After 2 hours of incubation, the number of cells that migrated from the inside of the Chemotaxicell microchamber to the backside was measured and tested for statistical significance. The graph shows the average soil standard error of each group.
- Fig. 4 shows data examining whether the chemotaxis of Forskolin-stimulated THP-1 cells to CXCL14 varies with the addition of anti-mouse CXCL14 monoclonal antibody. A representative stained photograph of cells that migrated from the inside of the Chemotaxicell microchamber to the back after 2 hours of culture is shown.
- FIG. 5 shows that the anti-mouse CXCL14-specific antibody neutralizes the inhibitory activity of the insulin signal by CXCL14.
- Differentiation-induced C2C12-derived myocytes were stimulated with insulin in the presence of the indicated substance, and phosphorylation of Akt Ser 473 was measured by Western plotting.
- BRAK and CXCL14 are synonymous, and any notation is used to mean the same thing.
- the present inventors focused on the physiological function of BRAK (CXCL14), focusing on the fact that mRNA expression was increased in skeletal muscle cells of muscular dystrophy model mouse mdx.
- amino acid sequence represented by SEQ ID NO: 3 to SEQ ID NO: 6 Is part of the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 2, and the numerical range in parentheses () is the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 2.
- the position is indicated by the number of amino acid residues from the N-terminal).
- Derivatives of the polypeptide that can be recognized by the antibody of the present invention include, for example, a partial amino acid residue of the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 2. Examples include those in which a group is substituted with a substitutable group, those in which a part of an amino acid residue is deleted, and those in which an amino acid residue is added or inserted. Examples of the derivative of the polypeptide having the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 2 include one or more of the above amino acid sequences (preferably about 1 to 10).
- the above-mentioned derivatives of human or mouse CXCL14 include, for example, salts with physiologically acceptable acids (eg, inorganic acids, organic acids) and bases (eg, alkali metal salts) (preferably physiological). May be used as an acid addition salt), and as such a salt, for example, a salt with an inorganic acid (for example, hydrochloric acid, phosphoric acid, hydrobromic acid, sulfuric acid), or an organic acid (for example, a salt with acetic acid, formic acid, propionic acid, fumaric acid, maleic acid, succinic acid, tartaric acid, succinic acid, malic acid, succinic acid, benzoic acid, methanesulfonic acid, benzenesulfonic acid, etc. are used.
- physiologically acceptable acids eg, inorganic acids, organic acids
- bases eg, alkali metal salts
- an acid addition salt for example, a salt with an inorganic acid (for example, hydrochloric
- partial peptide that can be recognized by the antibody of the present invention that is, a partial peptide of human or mouse CXCL14 or a derivative thereof, for example, in a polypeptide having the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 2
- Some amino acid residues are deleted, Some amino acid residues are replaced by substitutable groups (eg Cys, Hydroxyl groups, etc.)
- substitutable groups eg Cys, Hydroxyl groups, etc.
- Some amino acid residues In which a part of amino acid residues is substituted with a group that can be substituted (eg, Cys, hydroxyl group, etc.).
- the partial peptide examples include those in which about 22 residues (signal peptide portion) on the N-terminal side of human or mouse CXCL14 or a derivative thereof are deleted. More specifically, the partial peptide is a polypeptide having the amino acid sequence represented by SEQ ID NO: 1 (i) the second 3rd to 99th amino acid sequence (SEQ ID NO: 3), ( ii) a polypeptide having the second 4th to 35th amino acid sequence (SEQ ID NO: 4), and (iii) a part of the amino acid residues of the polypeptides (i) to (ii) (eg, 1) substituted by a substitutable group, and SEQ ID NO: : (Iv) a polypeptide having the amino acid sequence represented by 2 (2) 3rd to 9th amino acid sequence (SEQ ID NO: 5), (v) 2nd 4th to 3rd 5th amino acid A polypeptide having a sequence (SEQ ID NO: 6), and (vi) a part of the amino acid residues (
- a method for preparing an antibody antigen and a method for producing an antibody a method known per se, for example, the method described in W0 94/17197 or a method equivalent thereto can be used. Examples thereof are shown below. .
- the synthetic peptide can be produced by a known conventional method, and can be produced by either a solid phase synthesis method or a liquid phase synthesis method. That is, the target peptide can be produced by condensing a partial peptide or amino acid that can constitute the peptide and the remaining part, and removing the protecting group when the product has a protecting group.
- Known condensation methods and elimination of protecting groups include, for example, B. Merrifield (J. Am. Chera. Soc., 85, 2149 1963), M. Bodanszky and MA Ondetti.
- Peptide amides can be obtained using commercially available resins for peptide synthesis suitable for amide formation.
- resins include chloromethyl resin, hydroxymethyl resin, benzhydrylamine resin, aminomethyl resin, 4-benzoxybenzyl alcohol resin, 4-methylbenzhydrylamine resin, PAM resin, 4- Hydroxymethylmethyl phenylacetamide methyl resin, Poly attalinoleamide resin, 4-one (2, 4, 4-dimethoxyphenyl monohydroxymethyl) phenoxy resin, 4- (2, 4'-dimethyoxyphenyl luo F moc aminoethyl) and phenoxy resin.
- an amino acid having an ⁇ -amino group and a side chain functional group appropriately protected is condensed on the resin according to various known condensation methods according to the sequence of the target peptide.
- the peptide is excised from the resin, and at the same time, various protecting groups are removed to obtain the desired peptide.
- a partially protected peptide can be taken out using a trioctyl resin, an oxime resin, a 4-hydroxybenzoic acid resin, etc., and then the protective group can be removed by conventional means to obtain the desired peptide.
- carposimides are preferably used.
- carbodiimides include DCC, N, N'-diisopropyl / recarbodiimide, N-ethyl-N,-(3-dimethylaminoprolyl) carbodiimide, and the like.
- a protected amino acid is added directly to the resin together with a racemization-suppressed addition U (eg, H Bt, HO Bt, etc.), or a symmetric acid anhydride or HOB t ester or HO ⁇ B t ester Then, after preactivation of the protected amino acid, it can be added to the resin.
- a racemization-suppressed addition U eg, H Bt, HO Bt, etc.
- ⁇ can be appropriately selected from solvents known to be usable in the peptide condensation reaction.
- solvents examples include acid amides such as N, N-dimethylformamide, N, N-dimethylacetamide and N-methylpyrrolidone, halogenated hydrocarbons such as methylene chloride and chloroform, Alcohols such as trifnoreo ethanol, sulfoxides such as dimethyl sulfoxide, tertiary amines such as pyridine, ethers such as dioxane and tetrahydrofuran, nitriles such as acetonitrile and propionitol, methyl acetate, ethyl acetate Esters such as these, or appropriate mixtures thereof can be used as solvents used for the activation of protected amino acids and condensation with resins.
- acid amides such as N, N-dimethylformamide, N, N-dimethylacetamide and N-methylpyrrolidone
- halogenated hydrocarbons such as methylene chloride and chloroform
- Alcohols such as trifnor
- the reaction temperature is appropriately selected from a range known to be used for peptide bond formation reaction, and is usually selected appropriately from a range of about 120 ° C. to about 50 ° C.
- the activated amino acid derivative is usually used in an excess of about 1.5 to about 4 times.
- protecting groups for amino acid amino groups include Z, Boc, tertiary monopentinoreoxycarboninole, isobornyloxycarbonyl, 4-methoxybenzyloxycarbonyl, C1-Z , Br-Z, adamantino oxycanolebonyl, trifluoroacetyl, phthaloyl, formyl, 2-titanium phenylenosphenol, diphenylphosphinothioyl, and F moc.
- the hydroxyl groups of serine and threonine are, for example, esterified or etherified. Can be protected.
- groups suitable for esterification include lower (C 6 ) alkanoyl groups such as acetyl groups, aroyl groups such as benzoyl groups, groups derived from carbonic acid such as benzyloxycarbonyl groups, and ethoxycarbonyl groups.
- groups suitable for etherification include a benzyl group, a tetrahydropyraninole group, and a tertiary butinole group.
- Examples of the protecting group for the phenolic hydroxyl group of tyrosine include B z 1, C 1 -B z 1, 2-nitrobenzyl, B r—Z, and tertiary butyl.
- Examples of protecting groups for histidine imidazole include Tos, 4-methoxy-1,2,6-trimethi / decizenesunorehonore, DNP, Bom, Bum, Boc, Trt, Fmoc, etc. .
- the activated carboxyl group of the raw material includes, for example, the corresponding acid anhydride, azide, active ester [alcohol (eg, pentachlorophenol, 2, 4, 5-trichloro-mouth phenol, 2, 4-dinitro And phenol, cyanome norenoreconole, paranitone phenol, HONB, N-hydroxysuccinimide, N-hydroxyphthalimide, ester with HBt).
- active ester alcohol (eg, pentachlorophenol, 2, 4, 5-trichloro-mouth phenol, 2, 4-dinitro And phenol, cyanome norenoreconole, paranitone phenol, HONB, N-hydroxysuccinimide, N-hydroxyphthalimide, ester with HBt).
- active ester alcohol (eg, pentachlorophenol, 2, 4, 5-trichloro-mouth phenol, 2, 4-dinitro And phenol, cyanome norenoreconole, paranitone phenol, HONB
- Examples of methods for removing (eliminating) protecting groups include catalytic reduction in a hydrogen stream in the presence of a catalyst such as P d-black or P d-carbon, anhydrous hydrogen fluoride, methane sulphonic acid, Acid treatment with trifluoromethanesulfonic acid, trifluoroacetic acid or a mixture thereof, base treatment with disopropylethylamine, triethylamine, piperidine, piperazine, etc., reduction with sodium in liquid ammonia, etc. Can be mentioned.
- the elimination reaction by the acid treatment is generally carried out at a temperature of 120 ° C.
- the 2,4-dinitrophenyl group used as the imidazole protecting group of histidine is removed by thiophenol treatment
- the formyl group used as the indole protecting group of tryptophan is the above 1,2-ethanedithiol, 1,
- it can also be removed by alkaline treatment with dilute sodium hydroxide or dilute ammonia.
- the protection of the functional group that should not be involved in the reaction of the raw material and the protection group, the removal of the protective group, the activation of the functional group involved in the reaction, etc. can be appropriately selected from known groups or known means.
- an amide form of a peptide first, a monocarboxyl group of a carboxyl-terminal amino acid is amidated, and then the peptide chain is extended to the desired chain length on the amino group side.
- a peptide in which only the N-terminal ⁇ -amino group protecting group is removed and a peptide (or amino acid) in which only the C-terminal carboxyl group protecting group is removed are prepared.
- a method of condensation is used. The details of the condensation reaction are the same as described above.
- all the protecting groups are removed by the above-mentioned method to obtain the desired crude peptide.
- This crude peptide can be purified using various known purification means, and the desired peptide amide can be obtained by lyophilizing the main fraction.
- CXCL14 antigen can be directly immunized with insolubilized one.
- a complex in which CXCL14 antigen is bound or adsorbed to an appropriate carrier may be immunized.
- the mixing ratio between the carrier (carrier) and the CXCL14 antigen (hapten) is such that the antibody can be efficiently bound to or adsorbed to the CXCL14 antigen bound or adsorbed to the carrier.
- the polymer carrier usually used for the production of an antibody against a hapten can be used at a weight ratio of 0.1 to 100 with respect to the hapten 1. Examples of such polymer carriers include natural polymer carriers and synthetic polymer carriers.
- condensing agents can be used for force pulling of the hapten and the carrier.
- condensing agents include diazonium compounds such as bis-diazobenzidine that bridges tyrosine, histidine, and triftophan, and crosslinks of amino groups.
- diazonium compounds such as bis-diazobenzidine that bridges tyrosine, histidine, and triftophan
- crosslinks of amino groups include diazonium compounds such as bis-diazobenzidine that bridges tyrosine, histidine, and triftophan
- Compounds, diisocyanate compounds such as toluene-1,4-diisocyanate, dimaleimide compounds such as N, N, -di-maleimide that crosslink thiol groups, maleimide active ester compounds that crosslink amino groups and thiol groups, and amino groups
- a carpositimide compound that crosslinks with a carboxyl group is advantageously used.
- a thiol group is introduced by reducing an active ester reagent having a dithiopyridyl group (for example, SPDP) after reacting with one of the amino groups, and the other amino group. It is also possible to react both after introducing a maleimide group with a maleimide active ester reagent.
- SPDP dithiopyridyl group
- the antibody of the present invention may be a polyclonal antibody or a monoclonal antibody, and is not particularly limited, but is preferably a monoclonal antibody.
- a method for producing the antibody of the present invention a case of a monoclonal antibody will be described as an example.
- the CXCL14 antigen is administered to a warm-blooded animal by itself, for example, by intraperitoneal injection, intravenous injection, or subcutaneous injection, at a site where antibody production is possible, alone or with a carrier or diluent.
- complete Freund's adjuvant or incomplete Freund's adjuvant may be administered.
- Administration is usually once every 2 to 6 weeks, for a total of 2 to 10 times.
- warm-blooded animals include Sanore, Usagi, Inu, Monoremot, Mouse, Rat, Hedge, Goat, and Chicken, but mice are preferred for the production of antibodies, particularly monoclonal antibodies. Used frequently.
- CXCL14 antigen For the production of monoclonal antibodies, warm-blooded animals immunized with CXCL14 antigen, eg For example, by selecting individuals with antibody titers from mice, collecting spleen or lymph nodes 2-5 days after the final immunization, and fusing the antibody-producing cells contained therein with myeloma cells, anti-CXCL14 Monoclonal antibody-producing hybridomas can be prepared.
- the anti-CXCL14 antibody titer in serum is measured, for example, by reacting labeled CXCL14 described below with antiserum and then measuring the activity of the labeling agent bound to the antibody.
- the fusion operation can be performed according to a known method, for example, the method of Kohler and Milstein [Nature, 256, 495 (1975)].
- the fusion promoter include polyethylene glycol (PEG) and Sendai virus, and preferably PEG is used.
- PEG polyethylene glycol
- myeloma cells include NS-1, P3U1, SP2 / 0, AP-1, etc., and P3U1 is preferably used.
- the preferred ratio between the number of antibody producing cells (spleen cells) and the number of bone marrow cells is usually about 1: 1 to 20: 1, and PEG (preferably PEG1000 to PEG6000) is about 10 to 80%.
- the cell fusion can be carried out efficiently by incubating at a concentration of from 20 to 40 ° C, preferably from 30 to 37 ° C, and usually from 1 to 10 minutes.
- the hybridoma can be applied to a solid phase (eg, a microplate) on which CXCL14 or a derivative thereof or a partial peptide thereof is adsorbed directly or together with a carrier.
- a solid phase eg, a microplate
- Anti-CXCL14 monoclonal antibody is usually performed in animal cell culture medium (eg RPMI1640) containing 10-20% fetal bovine serum with addition of HA T (hypoxanthine, aminopterin, thymidine) .
- animal cell culture medium eg RPMI1640
- HA T hyperxanthine, aminopterin, thymidine
- the antibody titer of the hybridoma culture supernatant can be measured in the same manner as the above-described measurement of the anti-CXCL14 antibody titer in the antiserum.
- Separation and purification of anti-CXCL14 monoclonal antibody is the same as that for separation and purification of normal polyclonal antibody, such as separation and purification of immunoglobulin (eg, salting out method, alcohol precipitation method, etc.
- a specific purification method for obtaining an antibody by dissociating the binding and obtaining the antibody.
- the antibody of the present invention thus obtained comprises a diagnostic agent for type 2 diabetes and obesity, a preventive / therapeutic agent for type 2 diabetes and obesity, an agent for promoting reduction in the number of macrophages in white adipose tissue, and an improvement in insulin resistance. It can be used as an agent.
- the antibody of the present invention may be the antibody molecule itself, or a single-chain antibody of the above-mentioned antibody fragment or V region may be used.
- An antibody fragment means a partial region of an antibody, and specifically includes Fab, Fab Fab Fv (variable fragment of antibody), sFv dsFv (disulphide stabilized Fv), or dAb (single domain antibody).
- a single chain antibody of the V region has a structure in which V L (L chain variable region) and V H (H chain variable region) are connected by a linker.
- humanized antibodies When producing humanized antibodies, antibodies from mammals such as mice (non-human animals) From the variable region, the complementarity determining region (CDR) is transplanted into the human variable region.
- the framework region (FR) is derived from human and the CDR is derived from non-human animal.
- a variable region reconstructed by use is produced.
- a humanized antibody can be prepared by linking this reconstructed variable region to a human constant region.
- a humanized antibody can also be prepared as a chimeric antibody comprising a non-human antibody-derived variable region and a human antibody-derived constant region. Methods for producing humanized antibodies are well known in the art.
- Human antibodies generally have a problem with the specificity and binding affinity of the antigen binding site in the V region, that is, the hypervariable region, but any animal can be used structurally. . On the other hand, it is desirable that the rest of the V region and the structure of the constant region have the same structure as the human antibody.
- a gene sequence common to humans has been established by genetic engineering techniques.
- the antibody of the present invention can be used as a diagnostic agent for diseases involving CXCL14 (BRAK), that is, type 2 diabetes and Z or obesity.
- BRAK CXCL14
- the sandwich method comprises an antibody of the present invention (solid phase antibody) insolubilized on a carrier, a labeled antibody of the present invention (an antibody having a different epitope from the solid phase antibody: a labeling antibody), and a test solution.
- This is a method for quantifying CXCL14 or a derivative thereof in a test solution by measuring the activity of the labeling agent after the reaction.
- the test solution is reacted with the antibody of the present invention insolubilized on a carrier (primary reaction), and the labeled antibody of the present invention is reacted (secondary reaction), and then the insolubilized carrier is reacted.
- the amount of CXCL14 in the test solution can be quantified.
- the primary reaction and the secondary reaction may be performed simultaneously or at different times.
- the labeling agent and the insolubilizing method can be the same as those described above.
- the antibody used for the solid phase antibody or the labeling antibody is not necessarily one type, and a mixture of two or more types of antibodies is used for the purpose of improving measurement sensitivity. It may be used.
- the antibody used in the primary reaction recognizes a partial peptide on the C-terminal side of CXCL14 or its derivative
- the antibody used in the secondary reaction is on the C-terminal side.
- An antibody that recognizes other than a partial peptide ie, N-terminal side
- the antibody used in the primary reaction recognizes a partial peptide on the N-terminal side of CXCL14 or its derivative
- it is used in the secondary reaction.
- an antibody that recognizes other than the partial peptide on the N-terminal side that is, the C-terminal side
- the labeling antibody is preferably used after being labeled with horseradish peroxidase (HRP).
- the antigen in the test solution and the immobilized antigen are competitively reacted with a certain amount of the labeled antibody of the present invention, and then the solid phase and the liquid phase are separated.
- the antigen in the test solution is reacted with an excessive amount of the labeled antibody of the present invention, and then the immobilized antigen is added to bind the unreacted labeled antibody of the present invention to the solid phase. After that, the solid phase and the liquid phase are separated. Next, the amount of label in either phase is measured to quantify the amount of antigen in the test solution.
- the amount of insoluble precipitate produced as a result of antigen-antibody reaction in gel or solution is measured.
- laser nephrometry using laser scattering is preferably used.
- the labeling agent used in the measurement method using a labeling substance is not particularly limited, but radioisotopes, enzymes, fluorescent substances, luminescent substances, etc. are used. It is done.
- the radioisotope is not particularly limited, but for example, [ 125 1], [ 131 I], [ 3 H], [ 14 C] and the like are preferable.
- the above-mentioned enzymes are not particularly limited, but those that are stable and have high specific activity are preferred. For example, ⁇ -galactosidase, / 3-darcosidase, alfa phosphatase, peroxidase, malic acid dehydration Elementary enzymes and the like.
- a measurement system for CXCL14 or a derivative thereof may be constructed by adding the usual technical considerations of those skilled in the art to the usual conditions and operation methods in each method.
- you can refer to reviews, textbooks, etc. for example, Hiroshi Irie “Radio Im No Atssey” (Kodansha, published in 1964), Hiroshi Irie “ “Continuing Radio Imno Atssey” (Kodansha, published in 1954), edited by Eiji Ishikawa et al.
- the antibody of the present invention purifies CXCL14 or its derivatives. It can also be used for preparation of an antibody column used for detection, detection of CXCL14 or a derivative thereof in each fraction during purification, analysis of the behavior of CXCL14 or a derivative thereof in a test cell, and the like.
- the antibody of the present invention can be used as an active ingredient of a pharmaceutical agent such as a prophylactic / therapeutic agent for diseases involving CXCL14 (BRAK), ie, type 2 diabetes and / or obesity.
- a pharmaceutical agent such as a prophylactic / therapeutic agent for diseases involving CXCL14 (BRAK), ie, type 2 diabetes and / or obesity.
- Preferred examples of the medicament also include a Macphage phage reduction promoter in white adipose tissue and an insulin resistance improving agent.
- Such an injection can be prepared according to a known method, for example, by dissolving the antibody of the present invention or a salt thereof in a sterile aqueous liquid or oily liquid usually used for injection
- aqueous solutions for injection include physiological saline, isotonic solutions containing pudou sugar and other adjuvants, and suitable solubilizers such as, for example, Alcohol (eg, ethanol), polyalcohol (eg, propylene glycol, polyethylene glycol), nonionic surfactant (eg, polysonolate 80, HC0-50 (polyoxyethylene (50 mol) adduct of hydrogenated castor oil)), etc.
- Alcohol eg, ethanol
- polyalcohol eg, propylene glycol, polyethylene glycol
- nonionic surfactant eg, polysonolate 80, HC0-50 (polyoxyethylene (50 mol) adduct of hydrogenated castor oil
- the prepared injection solution is preferably filled in an appropriate ampoule, and the suppository used for rectal administration is prepared by mixing the above-mentioned antibody or a salt thereof with an ordinary suppository base. You may be prepared according to.
- compositions for oral administration include solid or liquid dosage forms, specifically tablets (including dragees and film-coated tablets), pills, granules, powders, capsules (softcapsenoles) ), Syrups, emulsions, suspensions, etc.
- Such a composition is produced by a known method and may contain a carrier, a diluent or an excipient usually used in the pharmaceutical field.
- carriers and excipients for tablets For example, lactose, starch, sucrose, and magnesium stearate are used.
- compositions are conveniently prepared in dosage unit form to suit the dosage of the active ingredient.
- dosage form of such a dosage unit include tablets, pills, capsules, injections (ampoules), and suppositories.
- the content of the antibody is preferably about 5 to 50 Omg per dosage unit dosage form, especially about 5 to 100 mg for injections, and about 10 to 250 mg for other dosage forms.
- Each of the above-described compositions may contain other active ingredients as long as they do not cause an unfavorable interaction by blending with the antibody.
- the dose of the pharmaceutical agent containing the antibody of the present invention as a prophylactic / therapeutic agent varies depending on the administration subject, target disease, symptom, administration route, etc., but is used for the treatment of type 2 diabetes in adults, for example.
- the antibody of the present invention can be used as a single dose, usually about 0.01 to 2 Omg / kg body weight, preferably about 0.0! It is convenient to administer about ⁇ lOmgZkg body weight, more preferably about 0.1 to 5 mg / kg body weight by intravenous injection about 1 to 5 times a day, preferably about 1 to 3 times a day.
- the antibody of the present invention is usually administered at a dose of about 0.1 to 2 Omg / kg body weight, preferably about 0.1 to 10 mg. It is convenient to administer about 0.1 kg / kg body weight, more preferably about 0.1 to 5 mg Zkg body weight by intravenous injection about 1 to 5 times a day, preferably about 1 to 3 times a day. In the case of prevention of type 2 diabetes and obesity, or in the case of other parenteral administration (eg, subcutaneous administration) and oral administration, doses equivalent to these can be administered. If symptoms are particularly severe, the dose may be increased according to the symptoms.
- amino acids and the like are represented by abbreviations based on abbreviations by IUPAC-IUB Commision on Biochemical Nomenclature or conventional abbreviations in the field, examples of which are described below.
- optical isomers for amino acids L-form and L-form are shown unless otherwise specified.
- Gly Glycine Ala: Alanine
- H0NB N-Hydroxy-5-norbornene-2,3-dicarboxyimide
- Trt Trityl
- Mouse skeletal muscle-derived myoblast cell line C2C12 obtained from American Type Culture Collection (ATCC) obtained from public cell banks, and human monocytic leukemia cell line THP-1 (Human Science Foundation Research Resources) (Obtained from Bank HSRRB) in Dulbecco's modifies Eagle's medium (DMEM) medium containing 10% urchin fetal serum or RPMI-1640 medium containing 10% urchin fetal serum. Cells in the growth phase were used for the experiment. Inoculate 2 x 10 5 C2C12 cells on 100 plates, incubate at 37 ° C, add Forskolin (Sigma) to a final concentration of 20 ⁇ , and continue at 37 ° C for another 2 days. Cultured.
- ATCC American Type Culture Collection
- THP-1 Human Science Foundation Research Resources
- For THP-1 cells 10 6 cells were inoculated on a 100 ⁇ plate, and at the same time, Forskolin was added to a final concentration of 20 zM and cultured at 37 ° C for 2 days.
- Forskolin is a reagent that activates A kinase and its downstream transcription factors by increasing intracellular cAMP concentration.
- the Forskolin-stimulated THP-1 cell line is widely used in immunological research as a cell line with properties similar to activated macrophages.
- Forskolin-stimulated C2C12 cells or Forskolin-stimulated THP-1 cells were washed once with chemotaxis buffer to remove fetal bovine serum, and then 2 x 10 5 cells / 200 ⁇ l each in a Chemotaxicell microchamber. Layered on top.
- the 24-wall plate set as described above was cultured at 37 ° C for 6 hours (C2C12 cells) or 2 hours (THP-1 cells). Immediately after the reaction was completed, the culture solution at the top of the microchamber was removed, and the cells attached to the bottom of the microchamber were fixed and stained using Diff-Quik (International Reagents). Cells remaining in the upper part of the microchamber were removed using a cotton swab.
- C2C12 myoblast cell line was cultured in DMEM medium containing 5% horse serum for 4 days to induce myogenic differentiation. After culturing in DMEM medium without serum for 16 hours at 37 ° C, myocytes were treated with 100 nM mouse CXCL14 (R & D Systems) for 1 hour, and 10 nM insulin (Sigma) was added. Stimulated for 10 minutes at 37 ° C. For neutralization experiments with antibodies, hedge anti-mouse CXCL14 polyclonal antibody (AF730, R & D Systems) was added to a pretreatment medium containing CXCL14 to a final concentration of 10 ⁇ g / ml.
- hedge anti-mouse CXCL14 polyclonal antibody AF730, R & D Systems
- Akt is a serine Z threonine kinase, also called protein kinase B (PKB), which is activated by the PI3 kinase pathway and is involved in various phenomena such as insulin metabolism.
- PLB protein kinase B
- Chemotaxis a typical biological activity of CXCL14, was analyzed by in vitro assay using a Chemotaxicell microchamber. As previously reported (Nara N et al., J. Biol. Chem., Vol. 282, p. 30794-30803, 2007), myogenic C2C12 cells respond to CXCL14. Thus, when C2C12 cells were stimulated with Forskolin, a general differentiation-inducing reagent, and then subjected to chemotaxis studies, cell attraction by mouse CXCL14 was detected (Fig. 1). Similar activity was detected in human CXCL14 ( Figure 1).
- Mouse CXCL14 and human CXCL14 differ in only 2 of the 77 amino acid residues that make up the polypeptide (see SEQ ID NO: 1 and SEQ ID NO: 2), so that the receptor expressed in C2C12 cells is human. It is expected to have cross-reacted with CXCL14.
- SEQ ID NO: 1 and SEQ ID NO: 2 the receptor expressed in C2C12 cells is human. It is expected to have cross-reacted with CXCL14.
- a specific antibody against mouse CXCL14 was added to the chemotaxis test solution, attraction of C2C12 cells by mouse CXCL14 was inhibited by 61% by polyclonal antibody AF730 and 54% by monoclonal antibody MAB730, respectively ( Figure 2 ) .
- CXCL14 receptor is thought to be a trimeric G protein-binding 7-transmembrane protein. It has not been.
- Anti-CXCL14-specific antibodies are not only useful as a tool to relieve prediabetic conditions caused by CXCL14 overproduced by obesity, but also remain unexplained physiological functions and receptors of CXCL14. It was thought to be useful in elucidating the body structure.
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CA002678194A CA2678194A1 (en) | 2007-02-09 | 2008-02-12 | Anti-human brak (cxcl14) monoclonal antibody and use thereof |
JP2008557192A JPWO2008096905A1 (ja) | 2007-02-09 | 2008-02-12 | 抗brak(cxcl14)ヒトモノクローナル抗体及びその用途 |
EP08711427A EP2123677A4 (en) | 2007-02-09 | 2008-02-12 | ANTI-BRAK HUMAN MONOCLONAL ANTIBODY (CXCL14) AND USE THEREOF |
US12/525,754 US20110020347A1 (en) | 2007-02-09 | 2008-02-12 | Anti-brak (cxcl14) human monoclonal antibody and use thereof |
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JP2007030027 | 2007-02-09 |
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DE102014015877B3 (de) | 2014-10-24 | 2015-08-20 | TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH | Einrichtung zur steuerbaren Druckentlastung eines Wirksystemes |
DK3298269T3 (da) * | 2015-05-20 | 2020-03-23 | Bladena Aps | Vindmølleblad med et forstærkningselement og fremgangsmåde til montering af et forstærkningselement |
KR102666457B1 (ko) * | 2023-11-20 | 2024-06-10 | 순천향대학교 산학협력단 | Cxcl14를 유효성분으로 포함하는 근육 질환의 예방 또는 치료용 조성물 |
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WO1994017197A1 (en) | 1993-01-25 | 1994-08-04 | Takeda Chemical Industries, Ltd. | ANTIBODY AGAINST β-AMYLOID OR DERIVATIVE THEREOF AND USE THEREOF |
WO2002006483A1 (fr) | 2000-07-18 | 2002-01-24 | Takeda Chemical Industries, Ltd. | Nouveau peptide actif sur le plan physiologique et utilisation associee |
JP2007030027A (ja) | 2005-07-29 | 2007-02-08 | Toyota Motor Corp | 水溶性中子の造型方法及びアルミ合金の鋳造方法 |
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US20020166133A1 (en) * | 1998-02-10 | 2002-11-07 | Millennium Pharmaceuticals, Inc | Neokine protein and nucleic acid molecules and uses therefor |
WO2002077028A1 (en) * | 2001-03-22 | 2002-10-03 | Genentech, Inc. | Polypeptides and nucleic acids for bolekine |
AU758074B2 (en) * | 1998-04-29 | 2003-03-13 | Genesis Research And Development Corporation Limited | Polynucleotides isolated from skin cells and methods for their use |
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2008
- 2008-02-12 CA CA002678194A patent/CA2678194A1/en not_active Abandoned
- 2008-02-12 JP JP2008557192A patent/JPWO2008096905A1/ja active Pending
- 2008-02-12 WO PCT/JP2008/052603 patent/WO2008096905A1/ja active Application Filing
- 2008-02-12 US US12/525,754 patent/US20110020347A1/en not_active Abandoned
- 2008-02-12 EP EP08711427A patent/EP2123677A4/en not_active Withdrawn
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WO1994017197A1 (en) | 1993-01-25 | 1994-08-04 | Takeda Chemical Industries, Ltd. | ANTIBODY AGAINST β-AMYLOID OR DERIVATIVE THEREOF AND USE THEREOF |
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JP2007030027A (ja) | 2005-07-29 | 2007-02-08 | Toyota Motor Corp | 水溶性中子の造型方法及びアルミ合金の鋳造方法 |
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CA2678194A1 (en) | 2008-08-14 |
US20110020347A1 (en) | 2011-01-27 |
EP2123677A1 (en) | 2009-11-25 |
EP2123677A4 (en) | 2010-08-11 |
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