S6K1-mediated phosphorylation of PDK1 impairs AKT kinase activity and oncogenic functions.
S6K1-mediated phosphorylation of PDK1 impairs AKT kinase activity and oncogenic functions.
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S6K1 介导的 PDK1 磷酸化会损害 AKT 激酶活性和致癌功能
DOI:
10.1038/s41467-022-28910-8
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发表时间:
2022-03-22
影响因子:
16.6
通讯作者:
Guo J
中科院分区:
文献类型:
--
作者:
Jiang Q;Zhang X;Dai X;Han S;Wu X;Wang L;Wei W;Zhang N;Xie W;Guo J
Functioning as a master kinase, 3-phosphoinositide-dependent protein kinase 1 (PDK1) plays a fundamental role in phosphorylating and activating protein kinases A, B and C (AGC) family kinases, including AKT. However, upstream regulation of PDK1 remains largely elusive. Here we report that ribosomal protein S6 kinase beta 1 (S6K1), a member of AGC kinases and downstream target of mechanistic target of rapamycin complex 1 (mTORC1), directly phosphorylates PDK1 at its pleckstrin homology (PH) domain, and impairs PDK1 interaction with and activation of AKT. Mechanistically, S6K1-mediated phosphorylation of PDK1 augments its interaction with 14-3-3 adaptor protein and homo-dimerization, subsequently dissociating PDK1 from phosphatidylinositol 3,4,5 triphosphate (PIP3) and retarding its interaction with AKT. Pathologically, tumor patient-associated PDK1 mutations, either attenuating S6K1-mediated PDK1 phosphorylation or impairing PDK1 interaction with 14-3-3, result in elevated AKT kinase activity and oncogenic functions. Taken together, our findings not only unravel a delicate feedback regulation of AKT signaling via S6K1-mediated PDK1 phosphorylation, but also highlight the potential strategy to combat mutant PDK1-driven cancers. The direct upstream regulation of PDK1 is not fully understood. Here the authors demonstrate that S6K1 directly phosphorylates PDK1 to inhibit AKT kinase activity and its ability to drive tumourigenesis.
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DOI:
10.1002/advs.202004303
发表时间:
2021-09
期刊:
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子:
--
作者:
Guo J;Cheng J;Zheng N;Zhang X;Dai X;Zhang L;Hu C;Wu X;Jiang Q;Wu D;Okada H;Pandolfi PP;Wei W
通讯作者:
Wei W
DOI:
10.1083/jcb.200403069
发表时间:
2004-07-19
期刊:
The Journal of cell biology
影响因子:
--
作者:
Harrington LS;Findlay GM;Gray A;Tolkacheva T;Wigfield S;Rebholz H;Barnett J;Leslie NR;Cheng S;Shepherd PR;Gout I;Downes CP;Lamb RF
通讯作者:
Lamb RF
影响因子:
64.5
作者:
Manning BD;Toker A
通讯作者:
Toker A
影响因子:
37.3
作者:
Jiang Q;Zheng N;Bu L;Zhang X;Zhang X;Wu Y;Su Y;Wang L;Zhang X;Ren S;Dai X;Wu D;Xie W;Wei W;Zhu Y;Guo J
通讯作者:
Guo J
影响因子:
28.2
作者:
Liu P;Gan W;Chin YR;Ogura K;Guo J;Zhang J;Wang B;Blenis J;Cantley LC;Toker A;Su B;Wei W
通讯作者:
Wei W