The protease SENP2 controls hepatic gluconeogenesis by regulating the SUMOylation of the fuel sensor AMPKα.
The protease SENP2 controls hepatic gluconeogenesis by regulating the SUMOylation of the fuel sensor AMPKα.
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蛋白酶 SENP2 通过调节燃料传感器 AMPKα 的 SUMOylation 来控制肝糖异生
DOI:
10.1016/j.jbc.2021.101544
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发表时间:
2022-03
期刊:
影响因子:
--
通讯作者:
Liu Y
中科院分区:
文献类型:
--
作者:
Dou X;Zhou WY;Ding M;Ma YJ;Yang QQ;Qian SW;Tang Y;Tang QQ;Liu Y
Uncontrolled gluconeogenesis results in elevated hepatic glucose production in type 2 diabetes (T2D). The small ubiquitin-related modifier (SUMO)-specific protease 2 (SENP2) is known to catalyze deSUMOylation of target proteins, with broad effects on cell growth, signal transduction, and developmental processes. However, the role of SENP2 in hepatic gluconeogenesis and the occurrence of T2D remain unknown. Herein, we established SENP2 hepatic knockout mice and found that SENP2 deficiency could protect against high-fat diet–induced hyperglycemia. Pyruvate- or glucagon-induced elevation in blood glucose was attenuated by disruption of SENP2 expression, whereas overexpression of SENP2 in the liver facilitated high-fat diet–induced hyperglycemia. Using an in vitro assay, we showed that SENP2 regulated hepatic glucose production. Mechanistically, the effects of SENP2 on gluconeogenesis were found to be mediated by the cellular fuel sensor kinase, 5′-AMP-activated protein kinase alpha (AMPKα), which is a negative regulator of gluconeogenesis. SENP2 interacted with and deSUMOylated AMPKα, thereby promoting its ubiquitination and reducing its protein stability. Inhibition of AMPKα kinase activity dramatically reversed impaired hepatic gluconeogenesis and reduced blood glucose levels in SENP2-deficient mice. Our study highlights the novel role of hepatic SENP2 in regulating gluconeogenesis and furthers our understanding of the pathogenesis of T2D.
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影响因子:
--
作者:
Hawley SA;Boudeau J;Reid JL;Mustard KJ;Udd L;Mäkelä TP;Alessi DR;Hardie DG
通讯作者:
Hardie DG
影响因子:
16.2
作者:
Qi Y;Wang J;Bomben VC;Li DP;Chen SR;Sun H;Xi Y;Reed JG;Cheng J;Pan HL;Noebels JL;Yeh ET
通讯作者:
Yeh ET
DOI:
10.1038/nrendo.2017.80
发表时间:
2017-10
期刊:
Nature reviews. Endocrinology
影响因子:
--
作者:
Petersen MC;Vatner DF;Shulman GI
通讯作者:
Shulman GI
影响因子:
3.3
作者:
Rubio T;Vernia S;Sanz P
通讯作者:
Sanz P
影响因子:
9.2
作者:
Woods, A;Johnstone, SR;Carling, D
通讯作者:
Carling, D