通过Beclin 1酸化,通过Akt介导调节自和瘤发生
Richard C Wang1, Yongjie Wei, Zhenyi An
1Department of Dermatology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Science (New York, N.Y.)
|November 1, 2012
概括
通过酸氨基3-激酶 (PI3K) -Akt通路的异常信号促进癌症. 阿克特酸化Beclin 1,通过形成Beclin 1/14-3-3/vimentin复合体来抑制自和促进瘤生长.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 通过I类酸丁3-激酶 (PI3K) -Akt通路的异常信号传递是人类癌症的标志.
- 贝克林1是参与自的关键蛋白质,并作为瘤抑制剂.
研究的目的:
- 研究阿克特信号通路在调节贝克林1功能中的作用.
- 通过Beclin阐明Akt通过Beclin影响自和瘤发生的机制 1.
主要方法:
- 使用了一种抗Akt介导酸化的Beclin 1突变.
- 评估了对Beclin 1突变的自水平,独立于 anchorage的生长和瘤发生.
- 检查了贝克林1,14-3-3和维丁之间的蛋白质-蛋白质相互作用.
- 研究了维门耗尽对自和转化的影响.
主要成果:
- 对抗Akt的Beclin 1突变体的表达增强了自,减少了 anchorage-independent的生长,并抑制了Akt驱动的瘤发生.
- 贝克林1的阿克特介导酸化增加了它与14-3-3和维丁的相互作用.
- 维门的耗尽导致了自的增加,并抑制了由Akt驱动的转化.
- 确定了一种涉及贝克林1,14-3-3和维丁的自抑制复合体.
结论:
- 贝克林1的Akt介导酸化是抑制自和促进瘤发生的关键机制.
- 贝克林1/14-3-3/vimentin复合体在Akt驱动的癌症进展中发挥着重要作用.
- 这些发现突出了Akt信号,中间丝和癌症中自之间的相互作用,提供了潜在的治疗点.
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