A p53-phosphoinositide signalosome regulates nuclear AKT activation.
A p53-phosphoinositide signalosome regulates nuclear AKT activation.
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p53-磷酸肌醇信号体调节核AKT活化。
DOI:
10.1038/s41556-022-00949-1
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发表时间:
2022-07
影响因子:
21.3
通讯作者:
中科院分区:
文献类型:
--
作者:
The tumor suppressor p53 and phosphoinositide 3-kinase (PI3K)-Akt pathway have fundamental roles in regulating cell growth and apoptosis, and they are frequently mutated in cancer. Here, we show that genotoxic stress induces nuclear Akt activation by a p53-dependent mechanism that is distinct from the canonical membrane-localized PI3K-Akt pathway. Upon genotoxic stress, a nuclear PI3K binds to p53 in the non-membranous nucleoplasm to generate a p53-PI3,4,5P3 complex, which recruits Akt and PDK1 and mTORC2 that are required to activate Akt, and phosphorylates FOXOs, thereby inhibiting DNA damage-induced apoptosis. Wild-type p53 activates nuclear Akt in an on/off fashion upon stress, whereas mutant p53 dose dependently stimulates high basal Akt activity. The p53-PI3,4,5P3 complex is dephosphorylated to p53-PI4,5P2 by the phosphatase and tensin homolog (PTEN) to inhibit Akt activation. The nuclear p53-phosphoinositide signalosome is distinct from the canonical membrane-localized pathway and insensitive to PI3K inhibitors currently in the clinic, underscoring its therapeutic relevance. p53 assembles a PI3K-PI3,4,5P3-Akt pathway that regulates nuclear Akt activation independent of the canonical pathway on membranes.
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影响因子:
4.1
作者:
Currie, RA;Walker, KS;Lucocq, J
通讯作者:
Lucocq, J
影响因子:
3.5
作者:
Fu W;Hall MN
通讯作者:
Hall MN
影响因子:
3.3
作者:
Boronenkov, IV;Loijens, JC;Anderson, RA
通讯作者:
Anderson, RA
影响因子:
4.8
作者:
Asmari, Mufarreh;Ratih, Ratih;El Deeb, Sami
通讯作者:
El Deeb, Sami
影响因子:
4.8
作者:
Andjelkovic, M;Alessi, DR;Hemmings, BA
通讯作者:
Hemmings, BA