Triptolide Induces Leydig Cell Apoptosis by Disrupting Mitochondrial Dynamics in Rats.

Triptolide Induces Leydig Cell Apoptosis by Disrupting Mitochondrial Dynamics in Rats.
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雷公藤甲素通过破坏大鼠线粒体动力学诱导间质细胞凋亡

DOI:
10.3389/fphar.2021.616803
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发表时间:
2021
影响因子:
5.6
通讯作者:
Liu G
Liu G
中科院分区:
医学2区
文献类型:
--
作者:
Lv L;Chang Y;Li Y;Chen H;Yao J;Xie Y;Liang X;Yang X;Zhang M;Liu G

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雷公藤甲素广泛应用于临床治疗多种疾病。副作用,包括对男性患者的生殖毒性,限制了其应用。然而,尚未报道详细的机制或潜在的干预目标。在这项研究中,我们发现雷公藤甲素可激活大鼠睾丸 Leydig 细胞中的线粒体凋亡途径,并在体内和体外诱导细胞凋亡,这可能导致睾丸功能减退并损害精子发生。从机制上讲,雷公藤甲素诱导动力相关蛋白1(Drp1)过度表达,干扰线粒体动态稳定性,激活线粒体凋亡途径。 Mdivi-1 是一种选择性 Drp1 抑制剂,部分逆转了雷公藤内酯醇诱导的线粒体动态紊乱和大鼠睾丸 Leydig 细胞凋亡。抑制Drp1过度激活可能是减轻雷公藤甲素生殖毒性的新策略。
Triptolide is widely used in the clinical treatment of various diseases. Side effects, including reproductive toxicity to male patients, limit its application. However, no detailed mechanisms or potential intervention targets have been reported. In this study, we show that triptolide activated the mitochondrial apoptosis pathway in rat testicular Leydig cells and induced apoptosis both in vivo and in vitro, which may cause hypoleydigism and impair spermatogenesis. Mechanistically, triptolide-induced dynamin-related protein 1 (Drp1) overexpression, which interfered with mitochondrial dynamic stability to activate the mitochondrial apoptosis pathway. Mdivi-1, a selective Drp1 inhibitor, partially reversed the mitochondrial dynamic disturbance and rat testicular Leydig cell apoptosis induced by triptolide. Inhibiting Drp1 over-activation may be a new strategy for mitigating the reproductive toxicity of triptolide.
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