2017
DOI: 10.1093/hmg/ddx298
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The NAD+-dependent deacetylase SIRT2 attenuates oxidative stress and mitochondrial dysfunction and improves insulin sensitivity in hepatocytes

Abstract: Insulin resistance is a major predictor of the development of metabolic disorders. Sirtuins (SIRTs) have emerged as potential targets that can be manipulated to counteract age-related diseases, including type 2 diabetes. SIRT2 has been recently shown to exert important metabolic effects, but whether SIRT2 regulates insulin sensitivity in hepatocytes is currently unknown. The aim of this study is to investigate this possibility and to elucidate underlying molecular mechanisms. Here, we show that SIRT2 is downre… Show more

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Cited by 71 publications
(51 citation statements)
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“…In this work, we identi ed a novel PTM-SUMOylation on Sirt2 at both K183 and K340 sites, which makes a great contribution to its tumor-suppressor function as well as the cell signal transduction. Because Sirt2 is an NAD + -dependent deacetylase [41,42], we also revealed that Sirt2-SUMOylation can be speci cally and positively regulated by NAD + in the cell, which logically highlights the importance of SUMOylation to Sirt2 protein function (Fig. 1F & G).…”
Section: Discussionmentioning
confidence: 53%
“…In this work, we identi ed a novel PTM-SUMOylation on Sirt2 at both K183 and K340 sites, which makes a great contribution to its tumor-suppressor function as well as the cell signal transduction. Because Sirt2 is an NAD + -dependent deacetylase [41,42], we also revealed that Sirt2-SUMOylation can be speci cally and positively regulated by NAD + in the cell, which logically highlights the importance of SUMOylation to Sirt2 protein function (Fig. 1F & G).…”
Section: Discussionmentioning
confidence: 53%
“…In mammals, this protein is highly expressed in the brain (340). Like SIRT1, SIRT2 is upregulated during calorie restriction and downregulated under conditions of energy excess (341,342). Recent applications to its function as a deacetylase of microtubules link it to aging brains and neuroprotective effects (343).…”
Section: Parp Nad ؉ Metabolism and Inflammationmentioning
confidence: 99%
“…It has been reported that SIRT2, as a strong deacetylase [23][24][25][26], is highly expressed in the brain and is markedly associated with aging [27,28]; additionally, SIRT2 was evaluated in the brains of PD patients, suggesting a potential role in PD development [29]. It has been confirmed that selective inhibitors of SIRT2 can protect against α-syn-mediated toxicity and dopaminergic cell death, both in vitro and in a Drosophila model of PD [19].…”
Section: Discussionmentioning
confidence: 94%