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天麻通过抑制铁死亡保护HT22细胞免受氧糖剥夺和再灌注引起的损伤。

Gastrodia protects HT22 cells from damage caused by oxygen glucose deprivation and reperfusion through inhibiting ferroptosis.

作者信息

Zhou Dongyue, Huang Zhixuan, Liu Jian, Tan Jinlong, Li Hui, Ai Yangwen

机构信息

Jiangxi Province Key Laboratory of Traditional Chinese Medicine Pharmacology, Institute of Traditional Chinese Medicine Health Industry, China Academy of Chinese Medical Sciences, Nanchang, 330115, China.

Jiangxi Health Industry Institute of Traditional Chinese Medicine, Nanchang, 330115, China.

出版信息

Sci Rep. 2025 May 27;15(1):18470. doi: 10.1038/s41598-025-03404-x.

Abstract

Gastrodin (Gas) is a key active ingredients of Gastrodia elata Bl., with applications in treating cardiovascular and neurodegenerative conditions. However, the impact of Gas on neuronal damage caused by cerebral ischemia/reperfusion remains uncertain. A cell model of oxygen-glucose deprivation/reoxygenation (OGD/R) was established and the viability and apoptosis of HT22 cells were measured using the CCK-8 assay and TUNEL staining. Different kits detected the levels of LDH, Fe and MDA. The levels of ferroptosis-related genes and proteins were evaluated utilizing RT-qPCR and Western blotting. Following OGD/R, there was a decrease in HT22 cell viability and an increase in LDH level and apoptosis rate. Gas (25µM) increased cell viability, decreased LDH, Fe, MDA and ACSL4 levels, up-regulated SLC7A11 and GPX4 and ameliorated OGD/R-induced apoptosis (P < 0.01). Ferroptosis inducer Erastin (Era, 10µM) successfully induced ferroptosis in HT22 cells, while Gas treatment attenuated the effect of Era. Era further promoted OGD/R-induced damage and ferroptosis in HT22 cells, whereas Gas inhibited the effect of Era. In conclusion, Gas might provide protection against induced HT22 cell injury caused by OGD/R through inhibiting ferroptosis, shows promising potential for clinical treatment of cerebral ischemia/reperfusion.

摘要

天麻素(Gas)是天麻的关键活性成分,可用于治疗心血管疾病和神经退行性疾病。然而,天麻素对脑缺血/再灌注引起的神经元损伤的影响仍不确定。建立了氧糖剥夺/复氧(OGD/R)细胞模型,采用CCK-8法和TUNEL染色检测HT22细胞的活力和凋亡情况。使用不同试剂盒检测乳酸脱氢酶(LDH)、铁和丙二醛(MDA)水平。利用实时定量聚合酶链反应(RT-qPCR)和蛋白质免疫印迹法评估铁死亡相关基因和蛋白的水平。OGD/R处理后,HT22细胞活力下降,LDH水平、凋亡率升高。天麻素(25µM)可提高细胞活力,降低LDH、铁、MDA和长链脂酰辅酶A合成酶4(ACSL4)水平,上调溶质载体家族7成员11(SLC7A11)和谷胱甘肽过氧化物酶4(GPX4)水平,并改善OGD/R诱导的细胞凋亡(P < 0.01)。铁死亡诱导剂艾拉司丁(Era,10µM)成功诱导HT22细胞发生铁死亡,而天麻素处理可减弱Era的作用。Era进一步促进OGD/R诱导的HT22细胞损伤和铁死亡,而天麻素抑制Era的作用。综上所述,天麻素可能通过抑制铁死亡对OGD/R诱导的HT22细胞损伤起到保护作用,在脑缺血/再灌注的临床治疗中显示出有前景的潜力。

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