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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Expression of a murine homologue of the inhibitor of apoptosis protein is related to cell proliferation `
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Expression of a murine homologue of the inhibitor of apoptosis protein is related to cell proliferation `

机译:凋亡蛋白抑制剂的鼠同源物的表达与细胞增殖有关

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The inhibitor of apoptosis (IAP) proteins form a highly conserved gene family that prevents cell death in response to a variety of stimuli. Herein we describe a newly defined murinc IAP, designated Tiap, that proved to be a murine homologue of human survivin based on sequence comparison. TIAP has one baculovirus IAP repeat and lacks a C-terminal RING finger motif TIAP interacted with the processed form of caspase 3 and inhibited caspase-induced cell death. Histological examinations revealed that TIAP is expressed in growing tissues such as thymus, testis, and intestine of adult mice and many tissues of embryos. In in vitro studies, TIAP was induced in splenic T cells activated with anti-CD3 antibody or Con A, and the expression of TIAP was up-regulated in synchronized NIH 3T3 cells at S to Gz/M phase of the cell cycle. We propose that during cell prolifer- alion, cellular protective activity may be augmented with inducible IAPs such as TIAP.
机译:凋亡抑制剂(IAP)蛋白质形成高度保守的基因家族,可防止细胞因各种刺激而死亡。在本文中,我们描述了一种新定义的鼠科动物IAP,称为Tiap,其基于序列比较证明是人存活蛋白的鼠同源物。 TIAP具有一个杆状病毒IAP重复序列,并且缺少C末端的RING手指基序TIAP与半胱天冬酶3的加工形式相互作用,并抑制了半胱天冬酶诱导的细胞死亡。组织学检查显示,TIAP在成年小鼠的胸腺,睾丸和肠等生长组织以及许多胚胎组织中表达。在体外研究中,TIAP在被抗CD3抗体或Con A激活的脾T细胞中被诱导,并且TIAP的表达在同步的NIH 3T3细胞中处于细胞周期的S至Gz / M期。我们建议在细胞增殖期间,可诱导性IAP(例如TIAP)可以增强细胞保护活性。

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