首页> 外文期刊>Life sciences >Gastrodia elata prevents rat pheochromocytoma cells from serum-deprived apoptosis: the role of the MAPK family.
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Gastrodia elata prevents rat pheochromocytoma cells from serum-deprived apoptosis: the role of the MAPK family.

机译:天麻可防止大鼠嗜铬细胞瘤细胞发生血清剥夺的凋亡:MAPK家族的作用。

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摘要

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 (PC12) 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 JNK inhibitor prevented serum-deprived apoptosis. Thus, G. elata prevents serum-deprived apoptosis through activation of the serine/threonine kinase-dependent pathway and suppression of JNK activity.
机译:天麻(G. elata)是治疗头痛,头晕,破伤风和癫痫的传统中草药。在这项研究中,通过MTT分析和Hoechst染色发现了G. elata的不同甲醇(MeOH)提取物可防止血清剥夺的大鼠嗜铬细胞瘤(PC12)细胞凋亡。丝氨酸/苏氨酸激酶抑制剂减弱了这种保护作用。 Western blot分析表明,G。elata分别导致ERK1 / 2和JNK1 / 2-p38 MAPKs(丝氨酸/苏氨酸激酶家族成员)的磷酸化和去磷酸化。上游ERK抑制剂减弱了G. elata诱导的ERK磷酸化,但没有保护作用。尽管JNK和p38抑制剂在血清剥夺过程中减弱了其相关酶的活性,但只有JNK抑制剂阻止了血清剥夺的细胞凋亡。因此,G。elata通过激活丝氨酸/苏氨酸激酶依赖性途径和抑制JNK活性来防止血清剥夺的细胞凋亡。

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