Provided is an antibody specifically binding a tissue factor pathway inhibitor in a pH-dependent manner or an antigen-binding fragment of the antibody, and also provided are a nucleic acid molecule encoding the antibody, an expression vector and a host cell for expressing the antibody, and a production method for the antibody. In addition, also provided are a pharmaceutical composition comprising the antibody or the antigen-binding fragment thereof, and a use of the pharmaceutical composition in the preparation of patient therapeutic drugs for preventing and/or treating diseases such as genetic or acquired coagulation factor deficiency, Bernard-Soulier syndrome, and Glanzmann's thrombasthenia.
Provided are an antibody specifically binding an epitope as shown in SEQ ID NO: 1 in a tissue factor pathway inhibitor, or an antigen-binding fragment of the antibody, a nucleic acid molecule encoding the antibody, an expression vector and a host cell for expressing the antibody, and a production method for the antibody. In addition, further provided are a pharmaceutical composition comprising the antibody or the antigen-binding fragment thereof, and a use of the pharmaceutical composition in preparation of drugs, wherein the drugs are used for preventing and/or treating coagulation diseases of patients, such as hereditary or acquired coagulation factor deficiency, Bernard-Soulier syndrome, and Glanzmann thrombasthenia.
Provided in the present invention are an antibody or an antigen-binding fragment thereof against human B7-H3. Further provided are a nucleic acid molecule encoding the antibody, an expression vector and a host cell for expressing the antibody, and a method for producing the antibody. In addition, further provided in the present invention are a pharmaceutical composition containing the antibody or the antigen-binding fragment thereof, and the use thereof in the preparation of a drug for preventing and/or treating various diseases (comprising tumors and autoimmune diseases).
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
Provided in the present invention is an antibody against human CD3 or an antigen-binding fragment thereof; also provided are a nucleic acid molecule encoding the antibody, an expression vector expressing the antibody and a host cell, as well as a method for producing the antibody. In addition, also provided in the present invention are a pharmaceutical composition comprising the antibody or the antigen-binding fragment thereof, a use thereof in the preparation of a drug, and a use of the drug as a drug for the prevention and/or treatment of various diseases, including tumors, organ transplantation and autoimmune diseases.
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
The present disclosure relates to a dual-function protein for regulating blood glucose and lipid metabolism, wherein said dual-function protein comprises a human GLP-1 analog and human FGF21. In the present disclosure, provided is a method for preparing said dual function protein, and also provided is the use of said dual-function protein in the preparation of a biological substance for treating type 2 diabetes, obesity, dyslipidemia, fatty liver disease and/or metabolic syndrome. The dual-function protein provided in the present disclosure can synergistically regulate blood glucose and lipid levels in vivo, and satisfy multiple requirements for patients with type 2 diabetes such as lowering blood glucose, relieving hepatic steatosis, reducing body weight and improving metabolic disorders of circulating lipids.
A linker peptide for constructing a fusion protein. The linker peptide comprises a flexible peptide and a rigid peptide. The flexible peptide consists of one or more flexible units. The rigid peptide consists of one or more rigid units. The flexible unit comprises two or more amino acid residues selected from Gly, Ser, Ala, and Thr. The rigid unit comprises a human chorionic gonadotropin β-subunit carboxy-terminal peptide (CTP) bearing a plurality of glycosylation sites. The linker peptide can more effectively eliminate mutual steric hindrance of two fusion molecules, decreasing a reduction/loss of polymerization or activity resulting from improper folding of an active protein or a conformational change. On the other hand, the negatively charged, highly sialylated CTP can resist renal clearance, further prolonging a half-life of a fused molecule and enhancing bioavailability of a fused protein. Furthermore, a protective effect of a glycosylated side chain CTP can lower the protease sensitivity of the linker peptide, making a linker region of the fusion protein less degradable.
C07K 16/06 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux provenant de sérum
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
A61K 38/18 - Facteurs de croissanceRégulateurs de croissance
A61K 39/395 - AnticorpsImmunoglobulinesImmunsérum, p. ex. sérum antilymphocitaire
A61P 1/16 - Médicaments pour le traitement des troubles du tractus alimentaire ou de l'appareil digestif des troubles de la vésicule biliaire ou du foie, p. ex. protecteurs hépatiques, cholagogues, cholélitholytiques
Provided are an antibody or an antigen-binding fragment thereof against human TFPI. Further provided are a nucleic acid molecule encoding the antibody, an expression vector and a host cell for expressing the antibody, and a production method of the antibody. In addition, provided are a pharmaceutical composition comprising the antibody or the antigen-binding fragment thereof, and the use thereof in the preparation of a drug. The drug is used for preventing and/or treating a patient with hereditary or acquired coagulation factor deficiency.
Disclosed is a method for efficiently separating and purifying recombinant human coagulate factor VIII Fc fusion protein. The method comprises steps of affinity chromatography and anion exchange chromatography; and the sample captured by means of the affinity chromatography is eluted with a salt ion buffer containing 5%-20% polyol organic solvents under the condition of pH 4.0 to 8.0, and the protein sample can be separated and purified to 85% or more by further ProteinA affinity chromatography. The purification method is simple to operate, naturally connects each step of chromatography, has a high recovery rate and low cost, and easily increases production.
B01D 15/38 - Adsorption sélective, p. ex. chromatographie caractérisée par le mécanisme de séparation impliquant une interaction spécifique non couverte par un ou plusieurs des groupes , p. ex. chromatographie d'affinité, chromatographie d'échange par ligand ou chromatographie chirale
B01D 15/36 - Adsorption sélective, p. ex. chromatographie caractérisée par le mécanisme de séparation impliquant une interaction ionique, p. ex. échange d'ions, paire d'ions, suppression d'ions ou exclusion d'ions
B01D 15/42 - Adsorption sélective, p. ex. chromatographie caractérisée par le mode de développement, p. ex. par déplacement ou par élution
B01D 15/20 - Adsorption sélective, p. ex. chromatographie caractérisée par des caractéristiques de structure ou de fonctionnement relatives au conditionnement de la matière adsorbante ou absorbante
B01D 15/32 - Chromatographie en phase liée, p. ex. avec une phase normale liée, une phase inverse ou une interaction hydrophobe
10.
HOMODIMER-TYPE BISPECIFIC ANTIBODY AGAINST HER2 AND CD3 AND USE THEREOF
A tetravalent, homodimer-type bispecific antibody molecule that simultaneously targets immune effector cell antigen CD3 and human epidermal growth factor receptor 2 (Her2); the bispecific antibody molecule comprises, from in sequence from N-terminus to C-terminus, a first single-chain Fv capable of specifically binding to Her2, a second single-chain Fv capable of specifically binding to CD3, and an Fc fragment; the first and second single-chain Fv are connected by means of a connection peptide, and the second single-chain Fv is connected to the Fc directly fragment or is connected by means of a connection peptide; the Fc fragment does not have effector functions such as CDC, ADCC and ADCP. The bispecific antibody may significantly inhibit or kill tumor cells, and has controlled toxic side effects that may be caused by excessive activation of effector cells. The maximum safe starting dose in preclinical toxicology evaluation tests is significantly higher than other doses having the same target, and no systemic immunotoxicity occurs, suggesting that the drug administration safety window for the bispecific antibody is wide; in addition, said bispecific antibody is a homodimer that does not experience the problem of heavy chain and light chain mismatching; the steps of purification are simple and efficient, expression is high, and the physicochemical and in vivo stability of the antibody are significantly improved.
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
Provided in the present invention are an antibody or an antigen-binding fragment thereof against human B7-H3. Further provided are a nucleic acid molecule encoding the antibody, an expression vector and a host cell for expressing the antibody, and a method for producing the antibody. In addition, further provided in the present invention are a pharmaceutical composition containing the antibody or the antigen-binding fragment thereof, and the use thereof in the preparation of a drug for preventing and/or treating various diseases (comprising tumors and autoimmune diseases).
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
A61K 39/395 - AnticorpsImmunoglobulinesImmunsérum, p. ex. sérum antilymphocitaire
A61K 47/68 - Préparations médicinales caractérisées par les ingrédients non actifs utilisés, p. ex. les supports ou les additifs inertesAgents de ciblage ou de modification chimiquement liés à l’ingrédient actif l’ingrédient non actif étant chimiquement lié à l’ingrédient actif, p. ex. conjugués polymère-médicament l’ingrédient non actif étant un agent de modification l’agent de modification étant un anticorps, une immunoglobuline ou son fragment, p. ex. un fragment Fc
Provided in the present invention is an antibody against human CD3 or an antigen-binding fragment thereof; also provided are a nucleic acid molecule encoding the antibody, an expression vector expressing the antibody and a host cell, as well as a method for producing the antibody. In addition, also provided in the present invention are a pharmaceutical composition comprising the antibody or the antigen-binding fragment thereof, a use thereof in the preparation of a drug, and a use of the drug as a drug for the prevention and/or treatment of various diseases, including tumors, organ transplantation and autoimmune diseases.
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
The present invention provides an antibody or an antigen-binding fragment thereof for novel coronavirus nucleocapsid protein, and an application thereof. The antibody is selected from any one of mAb6 antibody, mAb7 antibody, mAb8 antibody and mAb9 antibody; and the antibody is secreted by hybridoma cells having the accession numbers of CCTCC NO: C2020236, CCTCC NO: C2020237, CCTCC NO: C2020238 or CCTCC NO: C2020239. The presence of a novel coronavirus or an antigen thereof in an environmental sample and/or a biological sample can be detected by using the antibody. In addition, the present invention also provides a novel coronavirus detection kit prepared by using the antibody, capable of detecting the nucleocapsid protein in the early stage of infection, thereby providing a means to make the clinical detection of a novel coronavirus fast and precise.
C07K 16/10 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant de virus de virus à ARN
C12N 5/20 - Cellules murines, p. ex. cellules de souris un des partenaires de la fusion étant un lymphocyte B
G01N 33/577 - Tests immunologiquesTests faisant intervenir la formation de liaisons biospécifiquesMatériaux à cet effet faisant intervenir des anticorps monoclonaux
G01N 33/569 - Tests immunologiquesTests faisant intervenir la formation de liaisons biospécifiquesMatériaux à cet effet pour micro-organismes, p. ex. protozoaires, bactéries, virus
G01N 33/546 - Résine synthétique sous forme de particules pouvant être mises en suspension dans l'eau
G01N 33/543 - Tests immunologiquesTests faisant intervenir la formation de liaisons biospécifiquesMatériaux à cet effet avec un support insoluble pour l'immobilisation de composés immunochimiques
G01N 33/535 - Production de composés immunochimiques marqués avec un marqueur enzymatique
14.
FGF21 FC FUSION PROTEIN, GLP-1 FC FUSION PROTEIN, AND COMBINATION THERAPEUTIC AGENT COMPRISING SAME AND USE THEREOF
An FGF21 Fc fusion protein, a GLP-1 Fc fusion protein, and a combination therapeutic agent. The combination therapeutic agent consists of a first pharmaceutical composition comprising an FGF21 Fc fusion protein and a second pharmaceutical composition comprising a GLP-1 Fc fusion protein. The fusion proteins or a combination thereof is used for preventing or curing cardiovascular diseases and/or metabolic diseases; the diseases comprise obesity, diabetes, hyperlipidemia, nonalcoholic fatty liver disease, atherosclerosis, diabetic cardiomyopathy, coronary atherosclerotic cardiomyopathy, and other diseases related to insulin resistance.
A61P 1/16 - Médicaments pour le traitement des troubles du tractus alimentaire ou de l'appareil digestif des troubles de la vésicule biliaire ou du foie, p. ex. protecteurs hépatiques, cholagogues, cholélitholytiques
A linker peptide for constructing a fusion protein. The linker peptide comprises a flexible peptide and a rigid peptide. The flexible peptide consists of one or more flexible units. The rigid peptide consists of one or more rigid units. The flexible unit comprises two or more amino acid residues selected from Gly, Ser, Ala, and Thr. The rigid unit comprises a human chorionic gonadotropin β-subunit carboxy-terminal peptide (CTP) bearing a plurality of glycosylation sites. The linker peptide can more effectively eliminate mutual steric hindrance of two fusion molecules, decreasing a reduction/loss of polymerization or activity resulting from improper folding of an active protein or a conformational change. On the other hand, the negatively charged, highly sialylated CTP can resist renal clearance, further prolonging a half-life of a fused molecule and enhancing bioavailability of a fused protein. Furthermore, a protective effect of a glycosylated side chain CTP can lower the protease sensitivity of the linker peptide, making a linker region of the fusion protein less degradable.
C07K 16/06 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux provenant de sérum
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
Provided are an antibody against CD47 and a use thereof in the preparation of drugs for the treatment of various diseases (including tumours and infectious diseases). The antibody can specifically recognise and bind to CD47 with high affinity, and will not cause a significant haemagglutination reaction of red blood cells.
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
A61P 35/02 - Agents anticancéreux spécifiques pour le traitement de la leucémie
G01N 33/574 - Tests immunologiquesTests faisant intervenir la formation de liaisons biospécifiquesMatériaux à cet effet pour le cancer
G01N 33/577 - Tests immunologiquesTests faisant intervenir la formation de liaisons biospécifiquesMatériaux à cet effet faisant intervenir des anticorps monoclonaux
17.
ANTIBODY AGAINST SARS-COV-2 CORONAVIRUS S PROTEIN AND APPLICATION THEREOF
Provided are an antibody against SARS-CoV-2 coronavirus S protein and an application thereof in preparation of a drug for treating novel coronavirus pneumonia COVID-19. The antibody can specifically recognize and bind to the SARS-CoV-2 coronavirus S protein with a high affinity. This ensures that the antibody can block the infection of human cells by SARS-CoV-2.
Disclosed is a fusion protein of a mutated recombinant single-chain human coagulation factor VIII (FVIII), a preparation method therefor, and a use thereof. The fusion protein sequentially comprises, from an N-terminus to a C-terminus, a mutated single-chain human FVIII having a partially deleted B-domain, a flexible peptide linker, at least one rigid unit of a carboxyl-terminal peptide of a human chorionic gonadotropin beta subunit, and a half-life prolonging moiety (preferably an IgG Fc variant). The fusion protein has a similar biological activity to a recombinant FVIII, a prolonged active half life in vivo, and better stability in vitro and in vivo, and thus improves the pharmacokinetics and efficacy of the fusion protein.
Provided is a tetravalent, homodimer-type bispecific antibody molecule that targets both immune effector cell antigen CD3 and tumor-related antigen CD19. The bispecific antibody molecule comprises first and second single-chain Fv and Fc fragments in sequence from the N-terminus to the C-terminus, wherein the first single-chain Fv can specifically bind to CD19, the second single-chain Fv can specifically bind to CD3, the first and second single-chains Fv are connected by means of a linker peptide, the second single-chain Fv and Fc fragments are directly connected to each other or connected by means of a linker peptide; and the Fc fragment does not have effector functions such as CDC, ADCC, and ADCP. The bispecific antibody can significantly inhibit or kill tumor cells, and has toxic and side effects that may be caused by excessive activation of effector cells; in addition, such bispecific antibody is of homodimer type, without the problem of heavy chain and light chain mismatch; the purification step is simple and efficient, the expression is high, and the physical and chemical properties as well as in vivo stability of the antibody are significantly improved.
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
A61K 39/395 - AnticorpsImmunoglobulinesImmunsérum, p. ex. sérum antilymphocitaire
A61K 45/06 - Mélanges d'ingrédients actifs sans caractérisation chimique, p. ex. composés antiphlogistiques et pour le cœur
Disclosed is a bispecific antibody that specifically binds to surface antigens CD3 of immune cells and CD20 antigens on the surfaces of tumor cells, and that can bind to human CD3 with high affinity, inducing T cell proliferation, and mediating tumor cell killing. The bispecific antibody in an in vitro test was able to mediate the specific killing of target cells by T cells. The construction method thereof is simple, avoiding the possibility of mismatch between two sets of light chains and heavy chains of heterobispecific antibodies, thereby reducing the difficulty of antibody purification. The affinity of the obtained antibody is high, the side effects caused by cytokines are small, and safety is high.
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
C07K 16/32 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des produits de traduction des oncogènes
A fusion protein of hFGF21 or its analogs having improved pharmaceutical properties, and use of the fusion protein in preparing medicines for treating diseases, such as diabetes, obesity, non-alcoholic fatty liver disease, dyslipidemia, and/or metabolic syndrome.
Provided is a tetravalent homodimeric bispecific antibody molecule simultaneously targeting an immune effector cell antigen CD3 and a tumor-associated antigen, wherein the bispecific antibody molecule contains, in order from N-terminus to C-terminus, a first single chain Fv, a second single chain Fv and a Fc fragment; wherein the first single chain Fv can specifically bind to the tumor-associated antigen, the second single chain Fv can specifically bind to CD3, and the first and the second single chain Fvs are connected by a linker peptide, while the second single chain Fv and the Fc fragment are directly connected or connected by a linker peptide; and the Fc fragment does not have effector functions such as CDC, ADCC and ADCP.
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
C07K 16/30 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire provenant de cellules de tumeurs
C07K 16/32 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des produits de traduction des oncogènes
The present disclosure relates to a dual-function protein for regulating blood glucose and lipid metabolism, wherein said dual-function protein comprises a human GLP-1 analog and human FGF21. In the present disclosure, provided is a method for preparing said dual function protein, and also provided is the use of said dual-function protein in the preparation of a biological substance for treating type 2 diabetes, obesity, dyslipidemia, fatty liver disease and/or metabolic syndrome. The dual-function protein provided in the present disclosure can synergistically regulate blood glucose and lipid levels in vivo, and satisfy multiple requirements for patients with type 2 diabetes such as lowering blood glucose, relieving hepatic steatosis, reducing body weight and improving metabolic disorders of circulating lipids.
Disclosed is a method for efficiently separating and purifying recombinant human coagulate factor VIII Fc fusion protein. The method comprises steps of affinity chromatography and anion exchange chromatography; and the sample captured by means of the affinity chromatography is eluted with a salt ion buffer containing 5％-20％ polyol organic solvents under the condition of pH 4.0 to 8.0, and the protein sample can be separated and purified to 85％ or more by further ProteinA affinity chromatography. The purification method is simple to operate, naturally connects each step of chromatography, has a high recovery rate and low cost, and easily increases production.
Provided by the present invention are an antibody against human TIM-3 or an antigen-binding fragment thereof, and further provided are a nucleic acid molecule encoding the antibody, an expression vector for expressing the antibody and a host cell, and a method for producing the antibody. Further provided by the present invention are a pharmaceutical composition comprising the antibody or an antigen-binding fragment of the antibody, and an application of the pharmaceutical composition in the preparation of a medicine, the medicine is used for preventing and/or treating various diseases (including tumors, infectious diseases and autoimmune diseases).
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
An FGF21 Fc fusion protein, a GLP-1 Fc fusion protein, and a combination therapeutic agent. The combination therapeutic agent consists of a first pharmaceutical composition comprising an FGF21 Fc fusion protein and a second pharmaceutical composition comprising a GLP-1 Fc fusion protein. The fusion proteins or a combination thereof is used for preventing or curing cardiovascular diseases and/or metabolic diseases; the diseases comprise obesity, diabetes, hyperlipidemia, nonalcoholic fatty liver disease, atherosclerosis, diabetic cardiomyopathy, coronary atherosclerotic cardiomyopathy, and other diseases related to insulin resistance.
The present invention relates to the field of disease treatment and immunology. Specifically, the present invention relates to an anti-TIGIT antibody or an antigen-binding fragment thereof, a nucleic acid molecule for encoding same, and a method for preparing same. The anti-TIGIT antibody or the antigen-binding fragment thereof in the present invention has a high specificity and a high affinity with a TIGIT, and can efficiently block the binding of the TIGIT with a ligand thereof, and inhibit and/or block the intracellular signal transduction mediated by the ligand thereof bound with the TIGIT. Therefore, the present invention also relates to a pharmaceutical composition comprising the antibody or the antigen-binding fragment thereof, and the use thereof in preparing a drug for improving the immune cell activity, enhancing an immune response or preventing and/or treating tumors, infections or infectious diseases.
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
A hyperglycosylated recombinant human coagulation factor IX (FIX) fusion protein, a preparation method therefor, and use thereof. The fusion protein sequentially comprises, from N- to C-terminus, a human FIX, a flexible peptide linker, at least one human chorionic gonadotropin β subunit carboxy-terminal peptide rigid unit, and a half-life extending moiety. The fusion protein has a biological activity similar to that of the recombinant FIX, an extended in vivo activity half-life, and reduced immunogenicity, so as to improve pharmacokinetics and pharmacodynamics.
A tetravalent, homodimer-type bispecific antibody molecule that simultaneously targets immune effector cell antigen CD3 and human epidermal growth factor receptor 2 (Her2); the bispecific antibody molecule comprises, from in sequence from N-terminus to C-terminus, a first single-chain Fv capable of specifically binding to Her2, a second single-chain Fv capable of specifically binding to CD3, and an Fc fragment; the first and second single-chain Fv are connected by means of a connection peptide, and the second single-chain Fv is connected to the Fc directly fragment or is connected by means of a connection peptide; the Fc fragment does not have effector functions such as CDC, ADCC and ADCP. The bispecific antibody may significantly inhibit or kill tumor cells, and has controlled toxic side effects that may be caused by excessive activation of effector cells. The maximum safe starting dose in preclinical toxicology evaluation tests is significantly higher than other doses having the same target, and no systemic immunotoxicity occurs, suggesting that the drug administration safety window for the bispecific antibody is wide; in addition, said bispecific antibody is a homodimer that does not experience the problem of heavy chain and light chain mismatching; the steps of purification are simple and efficient, expression is high, and the physicochemical and in vivo stability of the antibody are significantly improved.
C07K 16/00 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
A61K 39/395 - AnticorpsImmunoglobulinesImmunsérum, p. ex. sérum antilymphocitaire
Disclosed is a bispecific antibody that specifically binds to surface antigens CD3 of immune cells and CD20 antigens on the surfaces of tumor cells, and that can bind to human CD3 with high affinity, inducing T cell proliferation, and mediating tumor cell killing. The bispecific antibody in an in vitro test was able to mediate the specific killing of target cells by T cells. The construction method thereof is simple, avoiding the possibility of mismatch between two sets of light chains and heavy chains of heterobispecific antibodies, thereby reducing the difficulty of antibody purification. The affinity of the obtained antibody is high, the side effects caused by cytokines are small, and safety is high.
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
Provided is a tetravalent, homodimer-type bispecific antibody molecule that targets both immune effector cell antigen CD3 and tumor-related antigen CD19. The bispecific antibody molecule comprises first and second single-chain Fv and Fc fragments in sequence from the N-terminus to the C-terminus, wherein the first single-chain Fv can specifically bind to CD19, the second single-chain Fv can specifically bind to CD3, the first and second single-chains Fv are connected by means of a linker peptide, the second single-chain Fv and Fc fragments are directly connected to each other or connected by means of a linker peptide; and the Fc fragment does not have effector functions such as CDC, ADCC, and ADCP. The bispecific antibody can significantly inhibit or kill tumor cells, and has toxic and side effects that may be caused by excessive activation of effector cells; in addition, such bispecific antibody is of homodimer type, without the problem of heavy chain and light chain mismatch; the purification step is simple and efficient, the expression is high, and the physical and chemical properties as well as in vivo stability of the antibody are significantly improved.
C07K 16/00 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
A61K 39/395 - AnticorpsImmunoglobulinesImmunsérum, p. ex. sérum antilymphocitaire
Provided is a tetravalent homodimeric bispecific antibody molecule simultaneously targeting an immune effector cell antigen CD3 and a tumor-associated antigen, wherein the bispecific antibody molecule contains, in order from N-terminus to C-terminus, a first single chain Fv, a second single chain Fv and a Fc fragment; wherein the first single chain Fv can specifically bind to the tumor-associated antigen, the second single chain Fv can specifically bind to CD3, and the first and the second single chain Fvs are connected by a linker peptide, while the second single chain Fv and the Fc fragment are directly connected or connected by a linker peptide; and the Fc fragment does not have effector functions such as CDC, ADCC and ADCP.
Disclosed is a fusion protein of a mutated recombinant single-chain human coagulation factor VIII (FVIII), a preparation method therefor, and a use thereof. The fusion protein sequentially comprises, from an N-terminus to a C-terminus, a mutated single-chain human FVIII having a partially deleted B-domain, a flexible peptide linker, at least one rigid unit of a carboxyl-terminal peptide of a human chorionic gonadotropin beta subunit, and a half-life prolonging moiety (preferably an IgG Fc variant). The fusion protein has a similar biological activity to a recombinant FVIII, a prolonged active half life in vivo, and better stability in vitro and in vivo, and thus improves the pharmacokinetics and efficacy of the fusion protein.
C12N 9/00 - Enzymes, p. ex. ligases (6.)ProenzymesCompositions les contenantProcédés pour préparer, activer, inhiber, séparer ou purifier des enzymes
C12N 15/00 - Techniques de mutation ou génie génétiqueADN ou ARN concernant le génie génétique, vecteurs, p. ex. plasmides, ou leur isolement, leur préparation ou leur purificationUtilisation d'hôtes pour ceux-ci
A61P 7/00 - Médicaments pour le traitement des troubles du sang ou du fluide extracellulaire
A61K 38/00 - Préparations médicinales contenant des peptides
This disclosure provides an antibody specifically binding to PD-1 with high affinity. Also provided are a nucleic acid molecule for coding the antibody, an expression vector and a host cell for expressing the antibody, and a production method for the antibody. In addition, also provided are an immunoconjugate and a pharmaceutical composition comprising the antibody and use of the antibody in preparation of drugs for treating cancers, infectious diseases, and inflammatory diseases.
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
A61K 47/55 - Préparations médicinales caractérisées par les ingrédients non actifs utilisés, p. ex. les supports ou les additifs inertesAgents de ciblage ou de modification chimiquement liés à l’ingrédient actif l’ingrédient non actif étant chimiquement lié à l’ingrédient actif, p. ex. conjugués polymère-médicament l’ingrédient non actif étant un agent de modification l’agent de modification étant un composé organique l’agent de modification étant aussi un agent pharmacologiquement ou thérapeutiquement actif, c.-à-d. le conjugué entier étant un co-médicament, p. ex. un dimère, un oligomère ou un polymère de composés pharmacologiquement ou thérapeutiquement actifs
C07K 16/22 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des facteurs de croissance
C07K 16/32 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des produits de traduction des oncogènes
A highly glycosylated human blood-clotting factor VIII (FVIII) fusion protein, and a manufacturing method and application of same. The fusion protein comprises, from the N-terminus to the C-terminus, a human (FVIII), a flexible peptide connector, at least one rigid unit of a human chorionic gonadotropin β-subunit carboxyl terminal peptide, and a half-life extending portion (preferentially selected from a human IgG Fc variant). The fusion protein has a similar level of biological activity as a recombinant (FVIII) and an extended in vivo half-life, thereby improving pharmacokinetics and drug efficacy.
A61K 47/68 - Préparations médicinales caractérisées par les ingrédients non actifs utilisés, p. ex. les supports ou les additifs inertesAgents de ciblage ou de modification chimiquement liés à l’ingrédient actif l’ingrédient non actif étant chimiquement lié à l’ingrédient actif, p. ex. conjugués polymère-médicament l’ingrédient non actif étant un agent de modification l’agent de modification étant un anticorps, une immunoglobuline ou son fragment, p. ex. un fragment Fc
A61K 47/65 - Séquences de liaison, liants ou bras-espaceurs peptidiques, p. ex. séquences de liaison peptidiques vulnérable aux protéases
A61P 7/04 - AntihémorragiquesProfacteurs de coagulationAgents hémostatiquesAgents antifibrinolytiques
Provided by the present invention are an antibody against human TIM-3 or an antigen-binding fragment thereof, and further provided are a nucleic acid molecule encoding the antibody, an expression vector for expressing the antibody and a host cell, and a method for producing the antibody. Further provided by the present invention are a pharmaceutical composition comprising the antibody or an antigen-binding fragment of the antibody, and an application of the pharmaceutical composition in the preparation of a medicine, the medicine is used for preventing and/or treating various diseases (including tumors, infectious diseases and autoimmune diseases).
The present invention relates to the field of treatment of diseases and immunology. Specifically, the present invention relates to an anti-LAG-3 antibody or an antigen-binding fragment thereof, nucleic acid molecules for encoding said antibody and fragment, and method for preparing said antibody and fragment. The anti-LAG-3 antibody or the antigen-binding fragment thereof according to the present invention has high specificity and high affinity to LAG-3, can effectively block the binding of LAG-3 to MHC II and /or FGL1, and can inhibit and/or block intracellular signaling mediated by LAG-3 binding to MHC II and/or FGL1. Therefore, the present invention further relates to a pharmaceutical composition comprising the antibody or the antigen-binding fragment thereof, and use of the pharmaceutical composition in the preparation of drugs. The drugs are used for improving the activity of immune cells and enhancing the immune response, or are used for preventing and/or treating tumors, infections or autoimmune diseases.
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
A linker peptide for constructing a fusion protein. The linker peptide comprises a flexible peptide and a rigid peptide. The flexible peptide consists of one or more flexible units. The rigid peptide consists of one or more rigid units. The flexible unit comprises two or more amino acid residues selected from Gly, Ser, Ala, and Thr. The rigid unit comprises a human chorionic gonadotropin β-subunit carboxy-terminal peptide (CTP) bearing a plurality of glycosylation sites. The linker peptide can more effectively eliminate mutual steric hindrance of two fusion molecules, decreasing a reduction/loss of polymerization or activity resulting from improper folding of an active protein or a conformational change. On the other hand, the negatively charged, highly sialylated CTP can resist renal clearance, further prolonging a half-life of a fused molecule and enhancing bioavailability of a fused protein. Furthermore, a protective effect of a glycosylated side chain CTP can lower the protease sensitivity of the linker peptide, making a linker region of the fusion protein less degradable.
C07K 16/06 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux provenant de sérum
C07K 16/28 - Immunoglobulines, p. ex. anticorps monoclonaux ou polyclonaux contre du matériel provenant d'animaux ou d'humains contre des récepteurs, des antigènes de surface cellulaire ou des déterminants de surface cellulaire
A highly glycosylated human blood-clotting factor VIII (FVIII) fusion protein, and a manufacturing method and application of same. The fusion protein comprises, from the N-terminus to the C-terminus, a human (FVIII), a flexible peptide connector, at least one rigid unit of a human chorionic gonadotropin β-subunit carboxyl terminal peptide, and a half-life extending portion (preferentially selected from a human IgG Fc variant). The fusion protein has a similar level of biological activity as a recombinant (FVIII) and an extended in vivo half-life, thereby improving pharmacokinetics and drug efficacy.
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