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通过激活 Nrf2/keap1 通路鉴定和优化胡椒碱类似物作为治疗帕金森病的神经保护剂。

Identification and optimization of piperine analogues as neuroprotective agents for the treatment of Parkinson's disease via the activation of Nrf2/keap1 pathway.

机构信息

State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital of Sichuan University, Chengdu, 610041, China.

Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, People's Republic of China.

出版信息

Eur J Med Chem. 2020 Aug 1;199:112385. doi: 10.1016/j.ejmech.2020.112385. Epub 2020 May 5.

Abstract

Parkinson's disease (PD) is a slowly progressive and complex neurodegenerative disorder. Up to date, there are no approved drugs that could slow or reverse the neurodegenerative process of PD. Here, we reported the synthesis of series of piperine analogues and the evaluation of their neuroprotective effects against hydrogen peroxide (HO) induced damage in the neuron-like PC12 cells. Among these analogues, 3b exhibited the most potent protection effect and its underlying mechanism was further investigated. Further results indicated that the ROS scavenging and cytoprotection effect of 3b might be related to the Nrf2 activation and upregulation of related phase II antioxidant enzymes, such as HO-1 and NQO1. In in vivo study, oral administration (100 mg/kg) of 3b significantly attenuated PD-associated behavioral deficits in a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced mouse model of PD and protected tyrosine hydroxylase-immunopositive dopaminergic neurons. Our results provided evidence that 3b might be a promising candidate for Parkinson's disease treatment.

摘要

帕金森病(PD)是一种进展缓慢且复杂的神经退行性疾病。迄今为止,尚无被批准的药物可以减缓或逆转 PD 的神经退行性过程。在这里,我们报告了一系列胡椒碱类似物的合成及其对过氧化氢(HO)诱导的神经元样 PC12 细胞损伤的神经保护作用的评价。在这些类似物中,3b 表现出最强的保护作用,其潜在机制进一步得到了研究。进一步的结果表明,3b 的 ROS 清除和细胞保护作用可能与 Nrf2 的激活以及相关的 II 期抗氧化酶(如 HO-1 和 NQO1)的上调有关。在体内研究中,3b 的口服给药(100mg/kg)显著减轻了 1-甲基-4-苯基-1,2,3,6-四氢吡啶(MPTP)诱导的 PD 小鼠模型中与 PD 相关的行为缺陷,并保护酪氨酸羟化酶免疫阳性多巴胺能神经元。我们的研究结果为 3b 可能成为治疗帕金森病的有前途的候选药物提供了证据。

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