G(i/o) protein-coupled receptor inhibition of beta-cell electrical excitability and insulin secretion depends on Na(+)/K(+) ATPase activation.
G(i/o) protein-coupled receptor inhibition of beta-cell electrical excitability and insulin secretion depends on Na(+)/K(+) ATPase activation.
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DOI:
10.1038/s41467-022-34166-z
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发表时间:
2022-10-29
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Gi/o-coupled somatostatin or α2-adrenergic receptor activation stimulated β-cell NKA activity, resulting in islet Ca2+ fluctuations. Furthermore, intra-islet paracrine activation of β-cell Gi/o-GPCRs and NKAs by δ-cell somatostatin secretion slowed Ca2+ oscillations, which decreased insulin secretion. β-cell membrane potential hyperpolarization resulting from Gi/o-GPCR activation was dependent on NKA phosphorylation by Src tyrosine kinases. Whereas, β-cell NKA function was inhibited by cAMP-dependent PKA activity. These data reveal that NKA-mediated β-cell membrane potential hyperpolarization is the primary and conserved mechanism for Gi/o-GPCR control of electrical excitability, Ca2+ handling, and insulin secretion. Gi/o protein-coupled receptors (Gi/o-GPCRs) limit β-cell insulin secretion by decreasing Ca2+ entry; however, the underlying mechanism has not been identified. Here, the authors show that Gi/o-GPCRs hyperpolarize mouse and human β-cell membrane potential by activating Na+/K+ATPases.
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影响因子:
4.6
作者:
Dickerson MT;Bogart AM;Altman MK;Milian SC;Jordan KL;Dadi PK;Jacobson DA
通讯作者:
Jacobson DA
DOI:
10.1113/jp279941
发表时间:
2020-11
期刊:
The Journal of physiology
影响因子:
--
作者:
Dickerson MT;Dadi PK;Butterworth RB;Nakhe AY;Graff SM;Zaborska KE;Schaub CM;Jacobson DA
通讯作者:
Jacobson DA
DOI:
10.1113/expphysiol.1983.sp002716
发表时间:
1983-01-01
影响因子:
--
作者:
DESA, SS;FERRER, R;ATWATER, I
通讯作者:
ATWATER, I
影响因子:
3.3
作者:
Féraille, E;Carranza, ML;Favre, H
通讯作者:
Favre, H
影响因子:
8.8
作者:
Briant LJB;Dodd MS;Chibalina MV;Rorsman NJG;Johnson PRV;Carmeliet P;Rorsman P;Knudsen JG
通讯作者:
Knudsen JG