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体外免疫反应的遗传控制。V. 三元共聚物L-谷氨酸60-L-丙氨酸30-L-酪氨酸10(GAT)对无反应小鼠中抑制性T细胞的刺激

Genetic control of immune responses in vitro. V. Stimulation of suppressor T cells in nonresponder mice by the terpolymer L-glutamic acid 60-L-alanine 30-L-tyrosine 10 (GAT).

作者信息

Kapp J A, Pierce C W, Schlossman S, Benacerraf B

出版信息

J Exp Med. 1974 Sep 1;140(3):648-59. doi: 10.1084/jem.140.3.648.

Abstract

In recent studies we have found that GAT not only fails to elicit a GAT-specific response in nonresponder mice but also specifically decreases the ability of nonresponder mice to develop a GAT-specific PFC response to a subsequent challenge with GAT bound to the immunogenic carrier, MBSA. Studies presented in this paper demonstrate that B cells from nonresponder, DBA/1 mice rendered unresponsive by GAT in vivo can respond in vitro to GAT-MBSA if exogenous, carrier-primed T cells are added to the cultures. The unresponsiveness was shown to be the result of impaired carrier-specific helper T-cell function in the spleen cells of GAT-primed mice. Spleen cells from GAT-primed mice specifically suppressed the GAT-specific PFC response of spleen cells from normal DBA/1 mice incubated with GAT-MBSA. This suppression was prevented by pretreatment of GAT-primed spleen cells with anti-theta serum plus C or X irradiation. Identification of the suppressor cells as T cells was confirmed by the demonstration that suppressor cells were confined to the fraction of the column-purified lymphocytes which contained theta-positive cells and a few non-Ig-bearing cells. The significance of these data to our understanding of Ir-gene regulation of the immune response is discussed.

摘要

在最近的研究中,我们发现,γ-氨基丁酸(GAT)不仅无法在无反应小鼠中引发GAT特异性反应,而且还会特异性地降低无反应小鼠对随后用与免疫原性载体甲基化牛血清白蛋白(MBSA)结合的GAT进行攻击产生GAT特异性的脾小结前体细胞(PFC)反应的能力。本文所展示的研究表明,如果将外源性的、经载体致敏的T细胞添加到培养物中,在体内被GAT诱导为无反应状态的无反应DBA/1小鼠的B细胞在体外能够对GAT-MBSA产生反应。这种无反应状态被证明是GAT致敏小鼠脾细胞中载体特异性辅助性T细胞功能受损的结果。GAT致敏小鼠的脾细胞特异性地抑制了与GAT-MBSA一起孵育的正常DBA/1小鼠脾细胞的GAT特异性PFC反应。用抗θ血清加补体(C)或X射线照射对GAT致敏的脾细胞进行预处理可防止这种抑制作用。通过证明抑制细胞局限于柱纯化淋巴细胞中含有θ阳性细胞和一些非免疫球蛋白携带细胞的部分,证实了抑制细胞为T细胞。本文讨论了这些数据对于我们理解免疫反应的Ir基因调控的意义。

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Helper and suppressor T cell factors.辅助性和抑制性T细胞因子。
Springer Semin Immunopathol. 1980 May;3(1):93-127. doi: 10.1007/BF00199927.

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