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Updated: Aug 16, 2026

12:12
Methods to Assess Beta Cell Death Mediated by Cytotoxic T Lymphocytes
Published on: June 16, 2011
由APO-1/(Fas/CD95) 介导的自T细胞自杀
Nature
|February 2, 1995
概括
T细胞受体激活触发人类T细胞中APO-1 (也称为Fas/CD95) 介导的亡. 这条涉及APO-1连接体的途径解释了T细胞删除和免疫反应调节.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 作为TNF受体超级家族的一部分,APO-1/(Fas/CD95) 受体调解了被编程的细胞死亡 (细胞亡).
- 来自lpr/lpr小鼠的激活T细胞 (ATC) 显示有缺陷的T细胞受体 (TCR) 诱导的亡,这表明APO-1的作用.
研究的目的:
- 研究APO-1受体在人类T细胞中TCR诱导的亡中的参与.
- 阐明TCR诱导的亡机制及其调节.
主要方法:
- 利用恶性Jurkat细胞,一种全活性T细胞克隆 (S13) 和外围ATC.
- 使用固定抗CD3抗体和Staphylococcus enterotoxin B (SEB) 触发的TCR信号.
- 通过使用抗APO-1抗体碎片和可溶性APO-1受体诱来评估亡抑制.
主要成果:
- 在所有测试的人类T细胞中,TCR触发诱导APO-1联体表达和亡.
- 通过阻断APO-1相互作用,可显著抑制了亡.
- 在激活的Jurkat细胞的超体中检测到一种可溶性APO-1连接体.
结论:
- 在ATC中TCR诱导的亡可以通过APO-1联体介导的自身隐性信号传递 (自杀) 发生.
- 这种机制有助于通过T细胞删除抑制免疫反应和周围耐受性.
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