Kapp J A, Pierce C W, Benacerraf B
J Exp Med. 1973 Nov 1;138(5):1121-32. doi: 10.1084/jem.138.5.1121.
The cellular requirements for the development of primary IgG GAT-specific PFC responses in cultures of spleen cells from responder, C57Bl/6, mice stimulated with GAT and GAT-MBSA and in cultures of spleen cells from nonresponder, SJL and B10.S, mice stimulated with GAT-MBSA were investigated. Macrophages were required for development of responses to GAT and GAT-MBSA in cultures of spleen cells from responder mice and for responses to GAT-MBSA in cultures of spleen cells from nonresponder mice. Macrophages from nonresponder mice supported the development of responses to GAT by nonadherent responder spleen cells, indicating that the failure of nonresponder mice to respond to GAT is not due to a macrophage defect. Furthermore, responder macrophages supported the responses of nonadherent, nonresponder spleen cells to SRBC and GAT-MBSA, but not to GAT. This indicates that the capacity to respond to GAT is a function of the nonadherent population which is composed of thymus-derived (T) helper cells and precursors of antibody-producing cells. Treatment of spleen cells with anti-theta serum and complement before culture initiation abolished PFC responses to GAT and GAT-MBSA thus establishing the requirement for T cells in the development of PFC responses to these antigens. Since precursors of antibody-producing cells in nonresponder mice are capable of synthesizing antibody specific for GAT after stimulation with GAT-MBSA and since the response to GAT is thymus-dependent, it appears that nonresponder mice lack GAT-specific helper T cell function.
研究了用谷氨酸-钥孔戚血蓝蛋白(GAT)和GAT-甲基牛血清白蛋白(GAT-MBSA)刺激的应答小鼠C57Bl/6脾细胞培养物中,以及用GAT-MBSA刺激的无应答小鼠SJL和B10.S脾细胞培养物中,原发性IgG GAT特异性空斑形成细胞(PFC)反应发生的细胞需求。在应答小鼠脾细胞培养物中,巨噬细胞是对GAT和GAT-MBSA产生反应所必需的,在无应答小鼠脾细胞培养物中,巨噬细胞是对GAT-MBSA产生反应所必需的。来自无应答小鼠的巨噬细胞支持非黏附性应答脾细胞对GAT的反应,这表明无应答小鼠对GAT无反应并非由于巨噬细胞缺陷。此外,应答巨噬细胞支持非黏附性、无应答脾细胞对绵羊红细胞(SRBC)和GAT-MBSA的反应,但不支持对GAT的反应。这表明对GAT产生反应的能力是由胸腺来源的(T)辅助细胞和抗体产生细胞前体组成的非黏附群体的功能。在培养开始前用抗θ血清和补体处理脾细胞,消除了对GAT和GAT-MBSA的PFC反应,从而确定了在对这些抗原的PFC反应发生过程中对T细胞的需求。由于无应答小鼠中的抗体产生细胞前体在用GAT-MBSA刺激后能够合成针对GAT的抗体,并且由于对GAT的反应是胸腺依赖性的,因此看来无应答小鼠缺乏GAT特异性辅助性T细胞功能。