Plunkett M L, Sanders M E, Selvaraj P, Dustin M L, Springer T A
J Exp Med. 1987 Mar 1;165(3):664-76. doi: 10.1084/jem.165.3.664.
CD2, also known as LFA-2, T11, and the E rosette receptor, is a T lymphocyte surface protein functionally important in adhesion to target cells and T cell triggering. LFA-3 is a widely distributed cell surface protein that functions in adhesion on target cells. We find that LFA-3 is expressed on human E, and that CD2 is a receptor for LFA-3 that mediates T cell adhesion to human E. Pretreatment of T lymphocytes with CD2 mAb or of E with LFA-3 mAb inhibits rosetting. Purified CD2 molecules bind to human E and inhibit rosetting. 125I-CD2 binding to E is inhibited by LFA-3 mAb; reciprocally, binding of LFA-3 mAb to human E is inhibited by pretreatment with purified CD2. Higher concentrations of CD2 aggregate human E; aggregation is inhibited by mAb to LFA-3.
CD2,也被称为淋巴细胞功能相关抗原2(LFA - 2)、T11以及E玫瑰花结受体,是一种T淋巴细胞表面蛋白,在与靶细胞的黏附及T细胞激活过程中发挥重要功能。淋巴细胞功能相关抗原3(LFA - 3)是一种广泛分布的细胞表面蛋白,在与靶细胞的黏附中发挥作用。我们发现LFA - 3在人E细胞上表达,并且CD2是LFA - 3的受体,介导T细胞与人E细胞的黏附。用CD2单克隆抗体预处理T淋巴细胞或用LFA - 3单克隆抗体预处理E细胞可抑制玫瑰花结形成。纯化的CD2分子与人E细胞结合并抑制玫瑰花结形成。125I标记的CD2与E细胞的结合被LFA - 3单克隆抗体抑制;相反,LFA - 3单克隆抗体与人E细胞的结合被纯化的CD2预处理所抑制。更高浓度的CD2使人类E细胞聚集;聚集被抗LFA - 3单克隆抗体抑制。