通过酸介导的mTOR信号传递的米托基激活
Y Fang1, M Vilella-Bach, R Bachmann
1Department of Cell and Structural Biology, University of Illinois at Urbana-Champaign, 601 South Goodwin Avenue, B107, Urbana, IL 61801, USA.
概括
酸 (PA) 对于哺乳动物的目标拉巴胺素 (mTOR) 信号传递,控制细胞生长和蛋白质合成至关重要. 这种脂质直接与mTOR相互作用,将线粒激素与细胞生长联系起来,并解释了拉帕米辛的作用.
科学领域:
- 分子生物学分子生物学
- 细胞信号传递 细胞信号传递
- 生物化学 生物化学
背景情况:
- 哺乳动物的拉巴胺素 (mTOR) 途径的标调节了基本的细胞过程,如生长,增殖和蛋白质合成.
- mTOR集成了来自基因和营养素的信号,以控制下游的细胞活动,包括信使RNA翻译.
研究的目的:
- 为了确定参与哺乳动物目标拉巴素 (mTOR) 信号传输的关键组件.
- 阐明酸 (PA) 在mTOR激活和调节中的作用.
- 为了探索米托基性刺激,PA和mTOR活动之间的机械联系.
主要方法:
- 在哺乳动物细胞中研究了线粒体刺激.
- 测量的细胞酸 (PA) 积累依赖于脂酶D.
- 评估了PA与mTOR.mTOR的拉巴素结合域之间的相互作用.
- 评估了PA对mTOR下游效应器激活的影响.
主要成果:
- 线粒体刺激诱导了细胞酸 (PA) 的脂酶D-依赖的增加.
- 累积的PA对于激活mTOR的下游信号通路至关重要.
- 酸 (PA) 直接与mTOR的拉巴胺素敏感域结合,与下游激活相关.
结论:
- 酸 (PA) 是哺乳动物对拉巴胺素 (mTOR) 信号传递的关键脂质媒介.
- 氨酸将线性信号与mTOR激活联系起来,影响蛋白质合成和细胞生长.
- 这些发现表明,免疫抑制剂拉巴胺素通过PA-mTOR相互作用的作用机制.
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