Marine compound Xyloketal B protects PC12 cells against OGD-induced cell damage

Marine compound Xyloketal B protects PC12 cells against OGD-induced cell damage
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海洋化合物 Xyloketal B 保护 PC12 细胞免受 OGD 诱导的细胞损伤

DOI:
10.1016/j.brainres.2009.09.034
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发表时间:
2009-11
期刊:
影响因子:
2.9
通讯作者:
Wang, Guan-Lei
Wang, Guan-Lei
中科院分区:
医学3区
文献类型:
--
作者:
Lin, Yong-Cheng;Li, Jie;Pang, Ji-Yan;Liu, Jie;Zhao, Jia;Zeng, Jinsheng;Li, Ling;Huang, Ruxun;Ling, Chen;Pei, Zhong;Wang, Guan-Lei

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木缩酮B是从红树林真菌Xylaria sp.(no.2508)中分离得到的具有独特化学结构的新型海洋化合物。最近,我们已经证明,木缩酮B是一种抗氧化剂,可以防止氧化低密度脂蛋白(LDL)诱导的细胞损伤。在本研究中,我们研究了在体外氧葡萄糖剥夺(OGD)缺血性中风模型中,木糖酮B是否可以保护缺血诱导的细胞损伤。结果表明,木缩酮B能直接清除DPPH自由基,对PC12细胞有保护作用。此外,Xyloketal B减轻OGD诱导的线粒体超氧阴离子、线粒体碎片化和GT3动力蛋白相关蛋白1(Drp 1)过表达以及线粒体膜电位降低。总之,本研究表明,木糖缩酮B保护PC12细胞免受OGD诱导的细胞损伤,并且抗氧化特性和对线粒体的保护作用可能是其神经保护作用的原因。
Xyloketal B is a novel marine compound with unique chemical structure isolated from mangrove fungus Xylaria sp. (no. 2508). Recently, we have demonstrated that Xyloketal B is an antioxidant and can protect against oxidized low density lipoprotein (LDL)-induced cell injury. In the present study, we investigated whether Xyloketal B can protect against ischemia-induced cell injury in an in vitro oxygen glucose deprivation (OGD) model of ischemic stroke in PC12 cells. We found that Xyloketal B could directly scavenge 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical and protect PC12 cells against OGD insult. Furthermore, Xyloketal B alleviated OGD-induced mitochondria superoxide, mitochondria fragmentation and GTPase dynamin-related protein 1 (Drp1) overexpression as well as reduction of mitochondrial membrane potential. All together, the present study demonstrates that Xyloketal B protects PC12 cells against OGD-induced cell injury and that the anti-oxidative property and protective action on mitochondria may account for its neuroprotective actions.
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