30 results about "Ce antigen" patented technology

The present invention provides recombinant antigen-binding regions and antibodies and functional fragments containing such antigen-binding regions that are specific for the membrane-anchored, 4O.kDa mesothelin polypeptide, which is overexpressed in several tumors, such as pancreatic and ovarian tumors, mesothelioma and lung cancer cells. These antibodies, accordingly, can be used to treat these and other disorders and conditions. Antibodies of the invention also can be used in the diagnostics field, as well as for further investigating the role of mesothelin in the progression of disorders associated with cancer. The invention also provides nucleic acid sequences encoding the foregoing antibodies, vectors containing the same, pharmaceutical compositions and kits with instructions for use.

The present invention provides a composition and method of regulating the activity of regulatory T cells. The present invention relates to a composition containing an antigen recognized by CD4+CD25+ regulatory T cells or an expression vector encoding such an antigen and a method of controlling an immune response from a mammal by administrating the composition to the mammal. Furthermore, the present invention provides effective means for suppressing a rejection reaction and a graft-versus-host reaction in transplantation and for prevention and treatment of an autoimmune disease or an allergic disease. Furthermore, an immunosuppression condition can be removed by the administration of Interferon-γ or a combination of Interleukin 12 and Interleukin 18. In other words, those cytokine actions and the sensitization with an SEREX antigen are suitably combined to artificially manipulate regulatory T cells, allowing the cells to be applied to an autoimmune disease, reactions accompanied with organ transplantation, allergic reaction, control of tumor immunity, and the like.

The present invention provides recombinant antigen-binding regions and antibodies and functional fragments containing such antigen-binding regions that are specific for the membrane-anchored, 29 kDa C4.4a polypeptide, which is over expressed in several tumors, e.g. lung, colorectal, pancreas, prostate, renal and breast cancer. These antibodies, accordingly, can be used to treat these and other disorders and conditions. Antibodies of the invention also can be used in the diagnostics field, as well as for further investigating the role of C4.4a in the progression of disorders associated with cancer. The invention also provides nucleic acid sequences encoding the foregoing antibodies, vectors containing the same, pharmaceutical compositions and kits with instructions for use.

The invention discloses an amino acid sequence for detecting a tumor marker P16 antigenic epitope and application of the amino acid sequence, and belongs to the technical field of immunology. The invention provides an antigenic amino acid sequence of a tumor anti-cancer gene P16. The P16 polypeptide antigen is used for detecting corresponding specific antigenic epitope in the blood of a patient with lung cancer and esophagus cancer; the antigenic epitope can be used as a tumor marker for estimating the degree of risk for occurring the lung cancer and the esophagus cancer. And the antigenic polypeptide and an antibody thereof can be used for preparing tumor early-diagnosis reagent and developing a targeted drug for treating the tumors.

The present invention provides recombinant antigen-binding regions and antibodies and functional fragments containing such antigen-binding regions that are specific for human and Macaca fascicularis CEACAM6 (Carcinoembryonic antigen-related cell adhesion molecule 6, CD66c, Non-specific crossreacting antigen, NCA, NCA-50 / 90), and which do not significantly cross-react with the closely related human CEACAM1, human CEACAM3, and human CEACAM5. The invention further provides methods to generate this kind of antibodies. The antibodies, accordingly, can be used to treat cancer and other disorders and conditions associated with expression of the CEACAM6. The invention also provides nucleic acid sequences encoding the foregoing antibodies, vectors containing the same, pharmaceutical compositions and kits with instructions for use.

The present invention provides antigen-binding polypeptides (e.g., bi-specific antigen-binding polypeptides) that specifically bind to a first and a second target antigen with high affinity. The present invention also provides novel antigen-binding polypeptides that specifically bind to HER2 and antagonize HER2 activation. The invention also provides nucleic acids encoding the antigen-binding polypeptides, recombinant expression vectors and host cells for making such antigen binding polypeptides. Methods of using antigen-binding polypeptide of the invention to treat disease (e.g., cancer) are also encompassed by the invention.

The invention relates to an antigen epitope amino acid sequence for detecting an esophageal cancer marker Survivin and application of the antigen epitope amino acid sequence, and belongs to the technical field of immunology. The invention provides the antigen amino acid sequence of a tumor cancer suppressor gene Survivin, the Survivin polypeptide antigen is applied for detecting a corresponding specific antigen epitope in the blood of an esophageal cancer patient, the antigen epitope can be used as a tumor marker for evaluating the risk degree of esophageal cancer, the antigen polypeptide and an antibody of the antigen polypeptide can be used for preparing an esophageal cancer early diagnosis reagent, and reliable data is provided for research of new tumor drugs.

The present invention provides immunoconjugates composed of antibodies, e.g., monoclonal antibodies, or antibody fragments that bind to mesothelin, that are conjugated to cytotoxic agents, e.g., maytansine, or derivatives thereof, and / or co-administered or formulated with one or more additional anti-cancer agents. The immunoconjugates of the invention can be used in the methods of the invention to treat and / or diagnose and / or monitor cancers, solid tumors, recombinant antigen-binding regions and antibodies and functional fragments containing such antigen-binding regions that are specific for the membrane-anchored, 40 kDa mesothelin polypeptide, which which is overexpressed in several tumors, such as pancreatic and ovarian tumors, mesothelioma and lung cancer cells.

The invention provides a triple antigen and antibody complex for preventing and controlling porcine viral diarrhea and a preparation method of the triple antigen and antibody complex. The triple antigen and antibody complex comprises an antigen and an antibody, wherein the antigen is a triple virus liquid obtained by mixing porcine transmissible gastroenteritis viruses, porcine epidemic diarrhea viruses and porcine rotavirus, and the antibody is a triple egg yolk antibody prepared on the basis of the antigen. The triple antigen and antibody complex for preventing and controlling porcine viral diarrhea is convenient and quick to use and capable of safely and effectively preventing and controlling the porcine viral diarrhea. The triple antigen and antibody complex can effectively reduce the body immunological stress response, increases the protection production speed, rapidly increases the body antibody titer and is prevented from the virus diffusion risk in production and use processes.

The present invention relates to novel proteins and to their production, from the MAGE family. In particular, to a MAGE protein fused to an immunological fusion partner, such as Lipoprotein D. Such antigens may be formulated to provide vaccines for the treatment of a range of tumours. Novel methods for purifying MAGE proteins are also provided.

Antigen-binding molecules comprising an Fc region comprising a polypeptide having: (i) C at the position corresponding to position 242, and C at the position corresponding to position 334, and (ii) one or more of: A at the position corresponding to position 236, D at the position corresponding to position 239, E at the position corresponding to position 332, L at the position corresponding to position 330, K at the position corresponding to position 345, and G at the position corresponding to position 430 are disclosed. Also discloses are constituent polypeptides of such Fc regions, nucleic acids encoding such antigen- binding molecules and polypeptides, compositions comprising such antigen-binding molecules, polypeptides and nucleic acids, and methods using the same.

The present invention provides an antigen binding polypeptide which specifically targets the synovial microvasculature of arthritis patients and comprises one or more complementarity determining regions (CDRs) selected from the group consisting of SEQ ID NOs 1 to 4. The present invention also relates to the use of such antigen binding polypeptides and conjugates thereof for use in the diagnosis and treatment of arthritis.

The invention provides an epitope polypeptide for detecting a cervical cancer tumor marker-FOXP3 autoantibody and an application thereof, belongs to the technical field of immunology, and provides an antigen amino acid sequence of an immune response regulating gene FOXP3 autoantibody. The corresponding specific autoantibody in plasma of cervical cancer benign and malignancy patients is detected by applying an FOXP3 epitope polypeptide antigen, and the autoantibody can be used as a cervical cancer tumor marker for evaluating the risk factor of cervical cancer occurrence. The antigen epitope polypeptide and the antibody thereof can be used for preparation of cervical cancer early-diagnosis reagents and development of targeted drugs for treating cervical cancer.

The invention discloses a tumor marker CD25 autoantibody and application of the tumor marker CD25 autoantibody, belonging to the technical field of immunology. The invention provides an amino acid sequence of antigen of immune response regulation gene CD25. The CD25 polypeptide antigen is used for detecting corresponding specific autoantibody in blood of lung cancer and esophageal cancer patients; and the autoantibody can be used as a tumor marker to evaluate risk level of occurrence of lung cancer and esophageal cancer. The antigen polypeptide and the antibody can be used for preparing early-stage tumor diagnostic reagent and developing target drugs for treating tumor.

Provided are binding polypeptides (e.g., antibodies), and drug conjugates thereof, comprising an Fc domain with an altered glycosylation profile and reduced effector function. In particular embodiment, the Fc domain comprises: an asparagine residue at amino acid position 298, according to EU numbering; and a serine or threonine residue at amino acid position 300, according to EU numbering. Also provided are nucleic acids encoding the antigen-binding polypeptides, recombinant expression vectors and host cells for making such antigen-binding polypeptides. Methods of using the antigen-binding polypeptides disclosed herein to treat disease are also provided.

The epitope amino acid sequence for detecting liver cancer marker IMP1 and an application thereof belong to the technical field of immunology. The invention provides an epitope amino acid sequence of liver cancer related gene IMP1. An IMP1 polypeptide antigen is applied to detect corresponding specific autoantibodies in the blood of a patient with liver cancer, and the autoantibody can be used as a liver cancer marker to assess risks of liver cancer and prognostic effect. The antigenic polypeptide and antibody thereof can be used to prepare reagents for early diagnosis of liver cancer and prognosis and to develop a targeted drug for liver cancer treatment.

The invention discloses an epitode amino acid sequence of TFG-beta1 (transforming growth factor beta-1) as a breast cancer detecting marker and application of the epitode amino acid sequence, belongs to the technical field of immunology, and provides the antigen amino acid sequence of a breast cancer-related gene TFG-beta1. The TFG-beta1 polypeptide antigen can be applied to detection of the corresponding specific autoantibody in the blood of a breast cancer patient, the autoantibody can be used as the breast cancer marker for evaluating the degree of risk of breast cancer occurrence, and the antigenic polypeptide and the antibody thereof can be used for preparing a reagent for early diagnosis of breast cancer and developing a target medicine for treating breast cancer.

The invention discloses a tumor marker FOXP3 auto-antibody and an application thereof, belonging to the technical field of immunology. The invention provides an antigen amino acid sequence of an immune response regulating gene FOXP3. An FOXP3 peptide antigen is used for detecting corresponding specific auto-antibodies in blood of patients suffering from lung cancer and esophageal cancer, and the auto-antibodies can be taken as tumor markers for evaluating the occurrence risks of lung cancer and esophageal cancer. An antigen polypeptide and an antigen thereof can be used for preparing tumor early diagnosis reagents and developing a targeting medicament for treating tumors.