The role of PI3P phosphatases in the regulation of autophagy.

The role of PI3P phosphatases in the regulation of autophagy.
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DOI:
10.1016/j.febslet.2010.02.054
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发表时间:
2010-04-02
期刊:
影响因子:
3.5
通讯作者:
Deretic V
Deretic V
中科院分区:
生物学3区
文献类型:
--
作者:
Vergne I;Deretic V

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自噬的启动严格依赖于磷脂酰肌醇3-磷酸(PI 3 P)的合成。PI 3 β的产生受到与Beclin-1复合的PI 3激酶hVps 34的严格控制。哺乳动物细胞表达属于肌管蛋白家族的几种PI 3 P磷酸酶。尽管其中一些与严重的人类疾病有关,但它们的细胞功能在很大程度上是未知的。最近的两项研究表明,参与自噬起始的PI 3 P代谢进一步受到PI 3 P磷酸酶Jumpy和MTMR 3的调节。mTOR上游和内吞途径上的PI 3 P的额外池可以间接调节自噬,表明其他PI 3 P磷酸酶可能参与该过程。本文综述了PI 3 P磷酸酶的研究进展,并讨论了其在自噬中的作用。
Autophagy initiation is strictly dependent on phosphatidylinositol 3-phosphate (PI3P) synthesis. PI3P production is under tight control of PI3Kinase, hVps34, in complex with Beclin-1. Mammalian cells express several PI3P phosphatases that belong to the myotubularin family. Even though some of them have been linked to serious human diseases, their cellular function is largely unknown. Two recent studies indicate that PI3P metabolism involved in autophagy initiation is further regulated by the PI3P phosphatases Jumpy and MTMR3. Additional pools of PI3P, upstream of mTOR and on the endocytic pathway, may modulate autophagy indirectly, suggesting that other PI3P phosphatases might be involved in this process. This review sums up our knowledge on PI3P phosphatases and discusses the recent progress on their role in autophagy.
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