Coenzyme Q10 Prevents Senescence and Dysfunction Caused by Oxidative Stress in Vascular Endothelial Cells

Overview

Journal Oxid Med Cell Longev

Publisher Wiley

Specialties Cell Biology
Endocrinology

Date 2018 Aug 18

PMID 30116476

Citations 36

Authors

Jia Huo

Zhe Xu

Kazunori Hosoe

Hiroshi Kubo

Hiroki Miyahara

Jian Dai

Masayuki Mori

Jinko Sawashita

Keiichi Higuchi

Affiliations

Soon will be listed here.

Abstract

Oxidative damage in endothelial cells is proposed to play an important role in endothelial dysfunction and atherogenesis. We previously reported that the reduced form of coenzyme Q10 (CoQH) effectively inhibits oxidative stress and decelerates senescence in senescence-accelerated mice. Here, we treated human umbilical vein endothelial cells (HUVECs) with HO and investigated the protective effect of CoQH against senescence, oxidative damage, and reduction in cellular functions. We found that CoQH markedly reduced the number of senescence-associated -galactosidase-positive cells and suppressed the expression of senescence-associated secretory phenotype-associated genes in HO-treated HUVECs. Furthermore, CoQH suppressed the generation of intracellular reactive oxygen species (ROS) but promoted NO production that was accompanied by increased eNOS expression. CoQH prevented apoptosis and reductions in mitochondrial function and reduced migration and tube formation activity of HO-treated cells. The present study indicated that CoQH protects endothelial cells against senescence by promoting mitochondrial function and thus could delay vascular aging.

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