作者: Cynthia A Chambers , James P Allison
DOI: 10.1016/S0952-7915(97)80087-8
关键词: Platelet-derived growth factor receptor 、 Biology 、 Cell biology 、 CD28 、 Antigen 、 T cell 、 T-cell receptor 、 Signal transduction 、 Co-stimulation 、 Cytotoxic T cell
摘要: Antigen-specific T cell responses have primarily been considered in terms of activation signals delivered through the TCR and co-stimulatory molecule CD28. In past few years, studies demonstrated critical importance inhibitory for regulating lymphocyte activation. CD28 its homologue cytotoxic antigen-4 (CTLA-4) share same counter-receptors on antigen-presenting cells, but recent experiments shown that CTLA-4 opposite effects The mechanisms responsible integrating these at cellular molecular levels are just beginning to be elucidated.