Indirubin-3'-oxime inhibits c-Jun NH2-terminal kinase: anti-apoptotic effect in cerebellar granule neurons，成果详细信息-中国科技论文在线

朱振宇

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Indirubin-3'-oxime inhibits c-Jun NH2-terminal kinase: anti-apoptotic effect in cerebellar granule neurons

，，，，，，，，，，，，，，，，，，朱振宇 Yuanbin Xie-a -b -c Yanling Liu-a -d Chi Ma-a Zhongmin Yuan-a Wenya Wang-a Zhenyu Zhu-b Guoquan Gao-b Xianguo Liu-d Hengxin Yuan-b Ruzhu Chen-a Shoujian Huang-a Xuelan Wang-a Xiaonan Zhu-a Xuemin Wang-e Zixu Mao-e and Mingtao Li-a

Neuroscience Letters Volume 367, Issue 3, 9 September 2004, Pages 355-359，-0001，（）：

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摘要/描述

Previous studies have demonstrated that c-Jun NH2-terminal protein kinase (JNK) plays a crucial role in neuronal apoptosis. Here, we report that indirubin-3'-oxime, a known effective inhibitor of cyclin-dependent kinases (CDKs) and glycogen synthase kinase 3-beta (GSK-3β), has a significant inhibitory effect on JNK. Kinase assay showed that indirubin-3'-oxime directly inhibited the activity of all three isoforms of JNK (JNK1, and JNK3) in vitro, with half inhibition dose (IC50) of 0.8μM, 1.4μM, and 1.0μM, respectively. In cerebellar granule neurons (CGNs), indirubin-3'-oxime blocked c-Jun phosphorylation induced by potassium withdrawal and prevented CGNs from apoptosis in a dose dependent manner. However, inhibitors of CDKs and GSK-3β were ineffective in reducing c-Jun phosphorylation both in vitro and in vivo, suggesting that indirubin-3'-oxime prevents c-Jun phosphorylation independent of its inhibition on CDKs and GSK-3β. Our studies give further supports for JNK-targeting strategy in preventing neuronal apoptosis.

关键词: Indirubin-3' ， -oxime ， Cerebellar granule neurons ， Apoptosis ， c-Jun NH2-terminal protein kinase

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