Calcium and inositolphosphates in the activation of T cell-mediated cytotoxicity

Calcium and inositolphosphates in the activation of T cell-mediated cytotoxicity
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钙和磷酸肌醇激活 T 细胞介导的细胞毒性

DOI:
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发表时间:
1987
影响因子:
15.3
通讯作者:
Tullio Pozzan
Tullio Pozzan
中科院分区:
医学1区
文献类型:
--
作者:
Susan Treves;F. Virgilio;Vincenzo Cerundolo;Paola Zanovello;D. Collavo;Tullio Pozzan

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来自许多实验室的报告显示,针对T3-Ti受体复合物的mAb引起CTL中无胞浆Ca 2 + [(Ca 2 +]i)的增加和磷脂酰肌醇二磷酸(PIP 2)的水解。在本报告中,我们表明,激活的CTL的特定目标的原因:(a)释放的Ca 2+从细胞内存储;(B)瞬时形成肌醇三磷酸(InsP 3);和(c)增加的CTL质膜的Ca 2+的渗透性。在A23187或PMA存在下,通过将不相关的靶与CTL共离心可以诱导对不相关的靶的杀伤。我们的结论是:(a)特异性抗原对CTL的激活触发了相同细胞内介质的产生,所述细胞内介质是通过用抗T3-Ti受体抗体和/或用多克隆有丝分裂原刺激淋巴细胞而产生的;和(B)介导CTL递送致死性命中的细胞内信号与诱导细胞增殖的细胞内信号不可区分。
Reports from a number of laboratories have shown that mAbs against the T3-Ti receptor complex cause an increase in cytosolic-free Ca2+ [( Ca2+]i) and the hydrolysis of phosphatidylinositolbisphosphate (PIP2) in CTLs. In the present report we show that activation of CTLs by their specific targets causes: (a) release of Ca2+ from intracellular stores; (b) transient formation of inositol trisphosphate (InsP3); and (c) an increased permeability to Ca2+ of CTL plasma membrane. Killing of unrelated targets could be induced by cocentrifugation of the unrelated targets with CTLs in the presence of A23187 or PMA. We conclude that: (a) activation of CTLs by specific antigens triggers the generation of the same intracellular mediators generated by stimulation of lymphocytes with anti-T3-Ti receptor antibodies and/or with polyclonal mitogens; and (b) intracellular signals that mediate the delivery of the lethal hit by CTLs are indistinguishable from those that induce cell proliferation.
通过高分辨率电影显微摄影确定细胞毒性 T 淋巴细胞颗粒与靶细胞相互作用后的重新定向和融合。
DOI: --
发表时间: 1986
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
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通讯作者: Engelhard,VH
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发表时间: 1985-12-01
影响因子: 11.1
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钙在 T 淋巴细胞介导的细胞溶解的致命打击中的作用。
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发表时间: 1986
影响因子: 11.1
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佛波酯刺激细胞毒性 T 淋巴细胞裂解弱和非特异性靶细胞。
DOI: --
发表时间: 1986
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Russell,JH
通讯作者: Russell,JH