The spatial distribution of GPCR and Gβγ activity across a cell dictates PIP3 dynamics.
The spatial distribution of GPCR and Gβγ activity across a cell dictates PIP3 dynamics.
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DOI:
10.1038/s41598-023-29639-0
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发表时间:
2023-02-16
影响因子:
4.6
通讯作者:
Karunarathne, Ajith
中科院分区:
文献类型:
--
作者:
Wijayaratna, Dhanushan;Ratnayake, Kasun;Ubeysinghe, Sithurandi;Kankanamge, Dinesh;Tennakoon, Mithila;Karunarathne, Ajith
Phosphatidylinositol (3,4,5) trisphosphate (PIP3) is a plasma membrane-bound signaling phospholipid involved in many cellular signaling pathways that control crucial cellular processes and behaviors, including cytoskeleton remodeling, metabolism, chemotaxis, and apoptosis. Therefore, defective PIP3 signaling is implicated in various diseases, including cancer, diabetes, obesity, and cardiovascular diseases. Upon activation by G protein-coupled receptors (GPCRs) or receptor tyrosine kinases (RTKs), phosphoinositide-3-kinases (PI3Ks) phosphorylate phosphatidylinositol (4,5) bisphosphate (PIP2), generating PIP3. Though the mechanisms are unclear, PIP3 produced upon GPCR activation attenuates within minutes, indicating a tight temporal regulation. Our data show that subcellular redistributions of G proteins govern this PIP3 attenuation when GPCRs are activated globally, while localized GPCR activation induces sustained subcellular PIP3. Interestingly the observed PIP3 attenuation was Gγ subtype-dependent. Considering distinct cell-tissue-specific Gγ expression profiles, our findings not only demonstrate how the GPCR-induced PIP3 response is regulated depending on the GPCR activity gradient across a cell, but also show how diversely cells respond to spatial and temporal variability of external stimuli.
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影响因子:
48
作者:
Kennedy, Matthew J.;Hughes, Robert M.;Peteya, Leslie A.;Schwartz, Joel W.;Ehlers, Michael D.;Tucker, Chandra L.
通讯作者:
Tucker, Chandra L.
影响因子:
4.7
作者:
Carnero A;Paramio JM
通讯作者:
Paramio JM
影响因子:
7.3
作者:
Black JB;Premont RT;Daaka Y
通讯作者:
Daaka Y
影响因子:
--
作者:
Bononi A;Agnoletto C;De Marchi E;Marchi S;Patergnani S;Bonora M;Giorgi C;Missiroli S;Poletti F;Rimessi A;Pinton P
通讯作者:
Pinton P
DOI:
10.1038/nrd.2017.178
发表时间:
2017-12
期刊:
Nature reviews. Drug discovery
影响因子:
--
作者:
Hauser AS;Attwood MM;Rask-Andersen M;Schiöth HB;Gloriam DE
通讯作者:
Gloriam DE