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首页> 外文期刊>Journal of applied toxicology >Activation of forkhead box O3a by mono(2-ethylhexyl)phthalate and its role in protection against mono(2-ethylhexyl)phthalate-induced oxidative stress and apoptosis in human cardiomyocytes
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Activation of forkhead box O3a by mono(2-ethylhexyl)phthalate and its role in protection against mono(2-ethylhexyl)phthalate-induced oxidative stress and apoptosis in human cardiomyocytes

机译:通过单邻(2-乙基己基)邻苯二甲酸酯的孔孔壳O3a的激活及其在保护邻苯二甲酸盐诱导的人心肌细胞中氧化胁迫和凋亡的作用

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摘要

Mono(2-ethylhexyl)phthalate (MEHP), the active metabolite of di(2-ethylhexyl)phthalate (DEHP), is known to exert cardiotoxicity. The aim of the present study was to investigate the role of forkhead box O3a (FOXO3a) in MEHP-induced human AC16 cardiomyocyte injuries. MEHP reduced cell viability and mitochondrial membrane potential (Delta psi m), whereas it increased lactate dehydrogenase (LDH) leakage, production of reactive oxygen species (ROS), and apoptosis in cardiomyocytes. The expression of FOXO3a and its target genes, mitochondrial superoxide dismutase (Mn-SOD) and apoptosis repressor with caspase recruitment domain (ARC), increased after MEHP exposure, but the expression of p-FOXO3a protein was decreased. Overexpression of FOXO3a decreased the production of ROS and the apoptosis rate induced by MEHP, and the expression of Mn-SOD and ARC was further increased after MEHP exposure. In contrast, knockdown of FOXO3a resulted in increased ROS production and apoptosis and suppressed the expression of Mn-SOD and ARC in the presence of MEHP. However, overexpression or knockdown of FOXO3a did not affect MEHP-induced loss of Delta psi m. In conclusion, the loss of Delta psi m and apoptosis are involved in MEHP-induced cardiomyocyte toxicity. Activation of FOXO3a defends against MEHP-induced oxidative stress and apoptosis by upregulating the expression of Mn-SOD and ARC in AC16 cardiomyocytes.
机译:邻苯二甲酸单(2-乙基己基)酯(MEHP)是邻苯二甲酸二(2-乙基己基)酯(DEHP)的活性代谢产物,已知具有心脏毒性。本研究旨在探讨叉头盒O3a(FOXO3a)在MEHP诱导的人AC16心肌细胞损伤中的作用。MEHP降低了细胞活力和线粒体膜电位(δpsi m),但增加了乳酸脱氢酶(LDH)漏出、活性氧(ROS)产生和心肌细胞凋亡。MEHP暴露后,FOXO3a及其靶基因、线粒体超氧化物歧化酶(Mn-SOD)和具有半胱天冬酶募集结构域的凋亡抑制因子(ARC)的表达增加,但p-FOXO3a蛋白的表达降低。FOXO3a的过度表达降低了MEHP诱导的ROS产生和凋亡率,并且MEHP暴露后Mn-SOD和ARC的表达进一步增加。相反,在MEHP存在的情况下,敲除FOXO3a导致ROS产生和凋亡增加,并抑制Mn-SOD和ARC的表达。然而,FOXO3a的过度表达或敲除并不影响MEHP诱导的Delta-psi m的丢失。总之,Delta-psi m的丢失和细胞凋亡与MEHP诱导的心肌细胞毒性有关。激活FOXO3a可通过上调AC16心肌细胞中Mn-SOD和ARC的表达来抵御MEHP诱导的氧化应激和凋亡。

著录项

  • 来源
    《Journal of applied toxicology》 |2021年第4期|共14页
  • 作者单位

    Hebei Med Univ Sch Publ Hlth Dept Toxicol 361 East Zhongshan Rd Shijiazhuang 050017 Hebei;

    Hebei Med Univ Sch Publ Hlth Dept Toxicol 361 East Zhongshan Rd Shijiazhuang 050017 Hebei;

    Hebei Key Lab Environm &

    Human Hlth Shijiazhuang Hebei Peoples R China;

    Hebei Med Univ Sch Publ Hlth Dept Toxicol 361 East Zhongshan Rd Shijiazhuang 050017 Hebei;

    Hebei Med Univ Sch Publ Hlth Dept Toxicol 361 East Zhongshan Rd Shijiazhuang 050017 Hebei;

    Hebei Med Univ Sch Publ Hlth Dept Toxicol 361 East Zhongshan Rd Shijiazhuang 050017 Hebei;

    Hebei Med Univ Dept Med Chem Shijiazhuang Hebei Peoples R China;

    Hebei Med Univ Sch Publ Hlth Dept Toxicol 361 East Zhongshan Rd Shijiazhuang 050017 Hebei;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 毒物学(毒理学);
  • 关键词

    apoptosis; cardiomyocytes; FOXO3a; MEHP; oxidative stress;

    机译:细胞凋亡;心肌细胞;FOXO3A;MEHP;氧化应激;

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