申请人:Francois Cedric
公开号:US20050113297A1
公开(公告)日:2005-05-26
The present invention provides a system for enhancing clearance or destruction of undesirable cells or noncellular molecular entities by tagging such cells or noncellular molecular entities with a marker that targets the cells or noncellular molecular entities for phagocytosis (phagocytic marker). The target cells can be, for example, endothelial cells, tumor cells, leukocytes, or virus-infected cells. In certain embodiments of the invention the tagging is accomplished by administering a composition comprising an antibody or ligand linked to the phagcytotic marker, wherein the antibody or ligand binds to a cell type specific marker present on or in the cell surface of a target cell. In preferred embodiments of the invention, the phagocytic marker comprises phosphatidylserine or a group derived from phosphatidylserine, thrombospondin-1, annexin I, or a derivative of any of these.
本发明提供了一种系统,通过标记这些细胞或非细胞分子实体,以增强清除或破坏不良细胞或非细胞分子实体,从而使这些细胞或非细胞分子实体成为吞噬细胞的目标(吞噬标记)。目标细胞可以是内皮细胞、肿瘤细胞、白细胞或病毒感染的细胞,例如。在本发明的某些实施例中,通过给予含有与吞噬标记连接的抗体或配体的组合物来实现标记,其中抗体或配体结合到目标细胞的细胞特异性标记,该标记存在于目标细胞的细胞表面或内部。在本发明的优选实施例中,吞噬标记包括磷脂酰丝氨酸或磷脂酰丝氨酸衍生物、血栓调节蛋白-1、骨桥蛋白I或这些任何一种的衍生物。