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    • 9. 发明申请
    • THERAPEUTIC COMPOUNDS COMPRISED OF ANTI-FC RECEPTOR BINDING AGENTS
    • 抗FC受体结合剂包含的治疗化合物
    • WO0109186A3
    • 2001-05-31
    • PCT/US0020158
    • 2000-07-25
    • MEDAREX INCDEO YASHWANT MGOLDSTEIN JOELGRAZIANO ROBERTKELER TIBOR
    • DEO YASHWANT MGOLDSTEIN JOELGRAZIANO ROBERTKELER TIBOR
    • C12N15/09A61K38/18A61K45/00A61P31/00A61P31/10A61P33/00A61P35/00A61P37/02C07K14/485C07K16/28C07K16/32C07K16/42C07K19/00A61K39/395
    • C07K16/283A61K38/1808A61K2039/505C07K14/485C07K16/2863C07K16/32C07K2317/24C07K2317/31C07K2317/51C07K2317/55C07K2317/732C07K2317/77C07K2319/00
    • Multispecific molecules which induce effector cell-mediated killing of target cells are disclosed. The molecules are "multispecific" because they bind to multiple (two or more), distinct targets, one of which is an Fc receptor on the surface of an immune cell. Multispecific molecules of the invention include molecules comprised of at least one portion which binds to an Fc receptor, such as an Fc gamma receptor (e.g., Fc gamma RI) or an Fc alpha receptor, and at least one other portion which binds to a different target, such as an antigen on a tumor cell or a pathogen. Multispecific molecules of the invention also include antigen "multimer complexes" comprised of multiple (i.e., two or more) portions which bind to a molecule on an antigen presenting cell (APC), such as an Fc receptor, linked to one or more antigens. These multimer complexes target antigens, such as self-antigens, to APCs to induce and/or enhance internalization (endocytosis), processing and/or presentation of the antigen by the APC. Therefore, these molecules can be used to induce or enhance an immune response either in vivo or in vitro against a normally non-immunogenic protein, such as a self-antigen. In a particular embodiment, at least one portion of the multispecific molecules comprises a humanized or human antibody or antibody fragment (e.g., ScFv or Fab') which binds to an Fc receptor or a receptor on a target cell (e.g., EGF-R or HER2).
    • 公开了诱导效应细胞介导的靶细胞杀伤的多特异性分子。 分子是“多特异性”,因为它们结合多个(两个或更多个)不同的靶,其中之一是免疫细胞表面上的Fc受体。 本发明的多特异性分子包括由结合Fc受体的至少一部分组成的分子,例如Fcγ受体(例如,FcγRI)或Fcα受体,以及至少另一部分结合不同的 靶,例如肿瘤细胞或病原体上的抗原。 本发明的多特异性分子还包括与多个(即两个或更多个)部分结合的抗原“多聚体复合物”,其与一个或多个抗原连接的抗原呈递细胞(APC)如Fc受体上的分子结合。 这些多聚体复合物将抗原(例如自身抗原)靶向APC以诱导和/或增强APC的内化(内吞作用),加工和/或呈递抗原。 因此,这些分子可以用于诱导或增强体内或体外针对正常非免疫原性蛋白(例如自身抗原)的免疫应答。 在特定实施方案中,多特异性分子的至少一部分包含与Fc受体或靶细胞上的受体结合的人源化或人抗体或抗体片段(例如,ScFv或Fab')(例如,EGF-R或 HER2)。