别名 ARHGAP45、HA-1、histocompatibility (minor) HA-1 + [6] |
简介 Precursor of the histocompatibility antigen HA-1. More generally, minor histocompatibility antigens (mHags) refer to immunogenic peptide which, when complexed with MHC, can generate an immune response after recognition by specific T-cells. The peptides are derived from polymorphic intracellular proteins, which are cleaved by normal pathways of antigen processing. The binding of these peptides to MHC class I or class II molecules and its expression on the cell surface can stimulate T-cell responses and thereby trigger graft rejection or graft-versus-host disease (GVHD) after hematopoietic stem cell transplantation from HLA-identical sibling donor. GVHD is a frequent complication after bone marrow transplantation (BMT), due to mismatch of minor histocompatibility antigen in HLA-matched sibling marrow transplants. Specifically, mismatching for mHag HA-1 which is recognized as immunodominant, is shown to be associated with the development of severe GVHD after HLA-identical BMT. HA-1 is presented to the cell surface by MHC class I HLA-A*0201, but also by other HLA-A alleles. This complex specifically elicits donor-cytotoxic T-lymphocyte (CTL) reactivity against hematologic malignancies after treatment by HLA-identical allogenic BMT. It induces cell recognition and lysis by CTL.
Contains a GTPase activator for the Rho-type GTPases (RhoGAP) domain that would be able to negatively regulate the actin cytoskeleton as well as cell spreading. However, also contains N-terminally a BAR-domin which is able to play an autoinhibitory effect on this RhoGAP activity. |
靶点 |
作用机制 ARHGAP45抑制剂 [+2] |
非在研适应症- |
最高研发阶段临床1期 |
首次获批国家/地区- |
首次获批日期1800-01-20 |
靶点 |
作用机制 ARHGAP45抑制剂 [+2] |
在研机构- |
原研机构 |
在研适应症- |
最高研发阶段终止 |
首次获批国家/地区- |
首次获批日期1800-01-20 |
开始日期2022-11-01 |
申办/合作机构 |
开始日期2020-11-18 |
申办/合作机构 |
开始日期2020-07-02 |
申办/合作机构 |