Minocycline inhibits the growth of glioma by inducing autophagy

Wei Ting Liu, Chia Ho Lin, Michael Hsiao, Po Wu Gean

研究成果: Article同行評審

53 引文 斯高帕斯(Scopus)

摘要

Minocycline has been shown to alleviate several neurological disorders. Unexpectedly, we found that minocycline had opposite effects on glioma cells: minocycline induced nonapoptotic cell death in glioma cells. The glioma cell death was associated with the presence of autophagic vacuoles in the cytoplasm. Minocycline-induced autophagy was confirmed by acridine orange, monodansylcadaverine (MDC) stainings of vesicle formation and the conversion of microtubule-associated protein 1 light chain 3 (LC3-I) to LC3-II . Pretreatment with autophagy inhibitor 3-methyladenine (3-MA) suppressed the induction of acidic vesicular organelles and the accumulation of LC3-II to the autophagosome membrane in glioma cells treated with minocycline. Despite the pretreatment of 3-MA, minocycline induced cell death which could result from the activation of caspase-3. Minocycline effectively inhibited tumor growth and induced autophagy in the xenograft tumor model of C6 glioma cells. These results suggest that minocycline may kill glioma cells by inducing autophagic cell death. When autophagy was inhibited, minocycline still induced cell death through the activation of caspase-3. Thus, minocycline is a promising agent in the treatment of malignant gliomas.

原文English
頁(從 - 到)166-175
頁數10
期刊Autophagy
7
發行號2
DOIs
出版狀態Published - 2011 二月

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Cell Biology

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