摘要:
The invention relates to a modified antibody which contains two or more H chain V regions and two or more L chain V regions of monoclonal antibody and can transduce a signal into cells by crosslinking TPO receptor to thereby exert TPO agonist action. The modified antibody can be used as a TPO signal transduction agonist and, therefore, useful as a remedy for various diseases such as platelet-reduction-related blood diseases, thrombopenia following chemotherapy for cancer or leukemia, etc.
摘要:
An objective of the present invention is to facilitate the acquisition of antibody-producing cells that are infiltrating virus-infected cells, cancer cells, abnormal cells forming a benign hyperplasia, and the like, and to improve the efficiency of the production of antibodies as well as nucleic acids encoding them from the antibody-producing cells.The present inventors discovered that, when cancer tissues comprising infiltrating lymphocytes are transplanted into highly immunodeficient animals that do not have T cells, B cells, and NK cells and further exhibit a low IFN production ability, the differentiation and proliferation of infiltrating lymphocytes are unexpectedly promoted, and the number of plasma cells that produce antibodies recognizing cancer tissues increases dramatically, plasma cells can be separated easily, and antibodies or nucleic acids encoding them can be easily prepared from the plasma cells.
摘要:
Provided is a cell growth inhibitor that can be used for treating diseases based on abnormal cell proliferation, and in particular cancer. The cell growth inhibitor contains an anti-glypican 3 antibody as an active ingredient.
摘要:
The invention relates to a modified antibody which contains two or more H chain V regions and two or more L chain V regions of monoclonal antibody and can transduce a signal into cells by crosslinking a cell surface molecule(s) to thereby serve as an agonist. The modified antibody can be used as a signal transduction agonist and, therefore, useful as a preventive and/or remedy for various diseases such as cancer, inflammation, hormone disorders and blood diseases.
摘要:
The present invention discloses reshaped antibody to human medulloblastoma cells comprising: (A) an L chain comprising: (1) a human L chain C region, and (2) an L chain V region comprising human L chain FRs and L chain CDRs of mouse monoclonal antibody ONS-M21 to human medulloblastoma cells; and, (B) an H chain containing: (1) a human H chain C region, and (2) an H chain V region comprising human H chain FRs and H chain CDRs of mouse monoclonal antibody ONS-M21 to human medulloblastoma cells. Since the majority of this reshaped human antibody is derived from a human antibody and mouse CDRs have a low level of antigenicity, the reshaped human antibody of the present invention has a low level of antigenicity in humans, and is therefore expected to be useful as a therapeutic agent and diagnostic tool for brain tumors such as medulloblastoma which strongly express antigen that is recognized by this antibody.
摘要:
The present invention relates to a method of producing a recombinant protein, particularly an antibody, using a cell in which the function of a fucose transporter is inhibited, and it also provides a cell in which the expression of fucose transporter genes on both homologous chromosomes is artificially suppressed.
摘要:
To identify antigens of the 2D7 antibody, the present inventors cloned the 2D7 antigen. As a result, the 2D7 antibody was found to recognize HLA class IA. In addition, the present inventors examined whether the 2D7 antibody has cell death-inducing activity. Nuclei fragmentation was observed when the 2D7 antibody was cross-linked with another antibody, indicating that cell-death was induced. Further, diabodies of the 2D7 antibody were found to have very strong cell death-inducing activities, even without the addition of another antibody. These results indicate that minibodies of an HLA-recognizing antibody can be used as cell death-inducing agents.
摘要:
Revealed are that the actions of inflammatory cytokine and the production of inflammatory cytokines such as IL-1 and TNF induced by an inflammatory stimulus as well as the production of other inflammatory cytokines such as IL-6 induced by the former class of inflammatory cytokines are all suppressed by inhibiting the signal transduction through TAK1.
摘要:
The present inventors used antibody engineering techniques to prepare functional antibodies that correspond to individual mutations in causative genes of diseases, and discovered that such antibodies enable the treatment of the diseases. Specifically, the inventors succeeded in preparing ligands, particularly minibodies, which have agonistic activity to receptors that have almost completely lost responsiveness to their natural ligands because of gene mutations (for example, a thrombopoietin (TPO) receptor whose reactivity to TPO has been markedly impaired), and which can transduce signals by interacting with these mutant receptors at levels comparable to normal.
摘要:
The present invention discloses reshaped antibody to human medulloblastoma cells comprising: (A) an L chain comprising: (1) a human L chain C region, and (2) an L chain V region comprising human L chain FRs and L chain CDRs of mouse monoclonal antibody ONS-M21 to human medulloblastoma cells; and, (B) an H chain containing: (1) a human H chain C region, and (2) an H chain V region comprising human H chain FRs and H chain CDRs of mouse monoclonal antibody ONS-M21 to human medulloblastoma cells. Since the majority of this reshaped human antibody is derived from a human antibody and mouse CDRs have a low level of antigenicity, the reshaped human antibody of the present invention has a low level of antigenicity in humans, and is therefore expected to be useful as a therapeutic agent and diagnostic tool for brain tumors such as medulloblastoma which strongly express antigen that is recognized by this antibody.