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Sirtuins family as a target in endothelial cell dysfunction: implications for vascular ageing

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Abstract

The vascular endothelium is a protective barrier between the bloodstream and the vasculature that may be disrupted by different factors such as the presence of diseased states. Diseases like diabetes and obesity pose a great risk toward endothelial cell inflammation and oxidative stress, leading to endothelial cell dysfunction and thereby cardiovascular complications such as atherosclerosis. Sirtuins are NAD+-dependent histone deacetylases that are implicated in the pathophysiology of cardiovascular diseases, and they have been identified to be important regulators of endothelial cell function. A handful of recent studies suggest that disbalance in the regulation of endothelial sirtuins, mainly sirtuin 1 (SIRT1), contributes to endothelial cell dysfunction. Herein, we summarize how SIRT1 and other sirtuins may contribute to endothelial cell function and how presence of diseased conditions may alter their expressions to cause endothelial dysfunction. Moreover, we discuss how the beneficial effects of exercise on the endothelium are dependent on SIRT1. These mainly include regulation of signaling pathways related to endothelial nitric oxide synthase phosphorylation and nitric oxide production, mitochondrial biogenesis and mitochondria-mediated apoptotic pathways, oxidative stress and inflammatory pathways. Sirtuins as modulators of the adverse conditions in the endothelium hold a promising therapeutic potential for health conditions related to endothelial dysfunction and vascular ageing.

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Acknowledgements

This work is funded by the Natural Science Foundation of Zhejiang Province (LQ20H310003 to Y.X.B.), and Wu Jieping Medical Foundation (320675019088-19 to Z.C.H.).

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Correspondence to Xu-ben Yu or Jing Liang.

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Zhang, Hn., Dai, Y., Zhang, Ch. et al. Sirtuins family as a target in endothelial cell dysfunction: implications for vascular ageing. Biogerontology 21, 495–516 (2020). https://doi.org/10.1007/s10522-020-09873-z

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  • DOI: https://doi.org/10.1007/s10522-020-09873-z

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