Jolivet-Reynaud C, Cavaillon J M, Alouf J E
Infect Immun. 1982 Dec;38(3):860-4. doi: 10.1128/iai.38.3.860-864.1982.
Clostridium perfringens delta toxin was selectively cytotoxic for various rabbit leukocyte populations. The sensitivity of these populations to the toxin varied, depending on the tissue from which they were derived, from 28% (appendix) to 41% (bone marrow) and 32% (spleen). Macrophages were uniformly killed by delta toxin, whereas thymocytes were essentially resistant. Selective cytotoxicity was correlated to the specific binding of the radiolabeled toxin by target cells. The relationship between sensitivity to the toxin and the presence of GM2 ganglioside in the cell membrane of rabbit leukocytes is discussed. Delta toxin might prove a useful new tool for separating leukocyte subpopulations based on their differential sensitivity to the cytolethal effect of this protein.
产气荚膜梭菌δ毒素对兔的各种白细胞群体具有选择性细胞毒性。这些细胞群体对毒素的敏感性各不相同,这取决于它们的来源组织,从28%(阑尾)到41%(骨髓)和32%(脾脏)。巨噬细胞会被δ毒素全部杀死,而胸腺细胞基本具有抗性。选择性细胞毒性与放射性标记毒素与靶细胞的特异性结合相关。本文讨论了兔白细胞细胞膜中对毒素的敏感性与GM2神经节苷脂的存在之间的关系。基于兔白细胞亚群对这种蛋白质细胞致死效应的不同敏感性,δ毒素可能会成为一种分离白细胞亚群的有用新工具。