neuropharmagology。 2022年8月29日:109236。 EPUB 2022 8月29日。PMID: 36049535 Yang,Tong JI,Cuilan Zhu,Beibei Liu,Hai Zhang,Chong Xu,Nana Zhang,Nana Zhang,Shile Huang,Long Chen
文章隶属关系:chunxiao liu
摘要:白藜芦醇是具有神经保护性的天然多物醇。基本机制尚不清楚。我们以前的研究已经确定,白藜芦醇通过靶向PP2A/PP5介导的ERK1/2和JNK途径来拮抗镉(CD)神经毒性。在这里,我们表明,通过阻止PC12细胞和鼠原发性神经元中CD诱导的MTORC1和MTORC2途径的激活,也可以通过阻止CD诱导的MTORC1和MTORC2途径的激活。与抑制剂O共同治疗f mTORC1 (rapamycin), mTORC1/2 (PP242), Erk1/2 (U0126) and/or JNK (SP600125), knockdown of mTOR, or disruption of mTORC1 and/or mTORC2 by silencing raptor, rictor or raptor/rictor, respectively, markedly potentiated the inhibitory effects of resveratrol on Cd-induced phosphorylation of S6K1/4E-BP1 (mTORC1 substrates), Akt (mTORC2 substrate), Erk1/2 and/or JNK/c-Jun, cleavage of caspase-3 and cell death in PC12 cells and/or primary neurons. Knockdown of S6K1 or 4E-BP1, or ectopic expression of constitutively hypophosphorylated4E-BP1 (4E-BP1-5A) reinforced the resveratrols inhibition on Cd-evoked cell death, whereas ectopic expression of constitutively active S6K1 or knockdown of 4E-BP1 attenuated the resveratrols inhibition on Cd-induced cell death.与AKT抑制剂或主要负AKT(DN-AKT)共同治疗增强了白藜芦醇在CD诱导的ROS,ERK1/2激活和凋亡上的抑制,而对组成性活性Akt(MYR-AKT)C对白藜芦醇抑制神经元细胞中的高度耐药性。综上所述,结果表明,白藜芦醇会通过抑制MTORC1/2途径来减弱CD诱导的神经元凋亡。我们的研究强调,可以利用白藜芦醇来预防与神经退行性疾病有关的CD毒性。