期刊
LIFE SCIENCES
卷 75, 期 13, 页码 1649-1657出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.lfs.2004.05.008
关键词
G. elata; PC12 cells; serum deprivation; apoptosis; MAPK
Gastrodia elata (G. elata) is a traditional Chinese herbal medicine for treating headaches, dizziness, tetanus, and epilepsy. In this study, differential methanol (MeOH) extracts of G. elata were found to prevent serum-deprived rat pheochromocytoma (PC 12) cell apoptosis by the MTT assay and Hoechst staining. A serine/threonine kinase inhibitor attenuated this protection. G. elata resulted in phosphorylation and dephosphorylation of ERK1/2 and JNK1/2-p38 MAPKs (members of the serine/threonine kinase family), respectively, as revealed by Western blot analysis. An upstream ERK inhibitor attenuated G. elata-induced ERK phosphorylation but not protective effect. Although JNK and p38 inhibitors attenuated their related enzyme activities during serum deprivation, only INK inhibitor prevented serum-deprived apoptosis. Thus, G. elata prevents serum-deprived apoptosis through activation of the serine/threonine kinase-dependent pathway and suppression of INK activity. (C) 2004 Elsevier Inc. All rights reserved.
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