Gastrodin Protects Cardiomyocytes from Anoxia/Reoxygenation Injury by 14-3-3η.

Gastrodin Protects Cardiomyocytes from Anoxia/Reoxygenation Injury by 14-3-3η.
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天麻素通过 14-3-3 eta 保护心肌细胞免受缺氧/复氧损伤

DOI:
10.1155/2018/3685391
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发表时间:
2018
影响因子:
--
通讯作者:
Yi B
Yi B
中科院分区:
生物学2区
文献类型:
--
作者:
Zhu M;Deng W;Di S;Qin M;Liu D;Yi B

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天麻素(GAS)是从中草药“天麻”根茎中分离得到的主要成分。GAS对心血管缺氧/复氧(A/R)损伤的保护作用及其机制尚不清楚,但临床研究发现GAS对心血管疾病中的心肌细胞具有保护作用。本研究旨在探讨天麻素对心肌细胞A/R损伤的影响。我们的结果表明,GAS对心肌细胞的保护作用与上调14-3-3η水平有关。GAS预处理可提高细胞活力,降低肌酸磷酸激酶(CPK)和乳酸脱氢酶(LDH)活性。GAS还可减少活性氧(ROS)的产生,抑制线粒体通透性转换孔(mPTP)开放,改变线粒体膜电位(ATP)的维持,降低caspase-3的活化,从而抑制细胞凋亡。通过siRNA 14 - 3 - 3η转染下调14 - 3 - 3η水平明显减弱了GAS对A/R损伤心肌细胞的保护作用。
Gastrodin (GAS) is the major component isolated from the rhizome of the Chinese traditional medicinal herb “Tianma.” Many clinical studies have found that GAS protects cardiomyocytes in cardiovascular diseases, although the effects and underlying mechanisms on cardiovascular anoxia/reoxygenation (A/R) injury remain unknown. This study is aimed at exploring the effect of gastrodin on cardiomyocytes in A/R injury. Our results suggested that the protective effect of GAS on cardiomyocytes is associated with upregulated 14-3-3η levels. Pretreatment with GAS could increase the cell viability and decrease the activities of creatine phosphokinase (CPK) and lactate dehydrogenase (LDH). GAS could also reduce reactive oxygen species (ROS) production, inhibit mitochondrial permeability transition pore (mPTP) opening, alter the maintenance of the mitochondrial membrane potential (∆Ψm), decrease the activation of caspase-3, and finally restrain cell apoptosis. Downregulating 14-3-3η levels by transfection with siRNA14-3-3η clearly attenuated the protective effect of GAS on cardiomyocytes in A/R injury.
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