Regulation of Phosphoinositide Signaling by Scaffolds at Cytoplasmic Membranes.

Regulation of Phosphoinositide Signaling by Scaffolds at Cytoplasmic Membranes.
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DOI:
10.3390/biom13091297
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发表时间:
2023-08-24
期刊:
影响因子:
5.5
通讯作者:
Anderson, Richard A.
Anderson, Richard A.
中科院分区:
生物学2区
文献类型:
--
作者:
Wen, Tianmu;Thapa, Narendra;Cryns, Vincent L.;Anderson, Richard A.

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Cytoplasmic phosphoinositides (PI) are critical regulators of the membrane–cytosol interface that control a myriad of cellular functions despite their low abundance among phospholipids. The metabolic cycle that generates different PI species is crucial to their regulatory role, controlling membrane dynamics, vesicular trafficking, signal transduction, and other key cellular events. The synthesis of phosphatidylinositol (3,4,5)-triphosphate (PI3,4,5P3) in the cytoplamic PI3K/Akt pathway is central to the life and death of a cell. This review will focus on the emerging evidence that scaffold proteins regulate the PI3K/Akt pathway in distinct membrane structures in response to diverse stimuli, challenging the belief that the plasma membrane is the predominant site for PI3k/Akt signaling. In addition, we will discuss how PIs regulate the recruitment of specific scaffolding complexes to membrane structures to coordinate vesicle formation, fusion, and reformation during autophagy as well as a novel lysosome repair pathway.
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