素通过调节Sirt1/Nrf2通路来抑制HUVEC的铁灭
Ming Xiang1,2, Xiangdong Lin3, Haiying Chen4
1Provincial Key Laboratory of TCM Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan, China.
Cell biochemistry and biophysics
|July 28, 2025
概括
素通过激活人类静脉内皮细胞 (HUVEC) 中的Sirt1/Nrf2通路来抑制冠心病 (CHD) 中的铁亡. 这一发现为CHD提供了新的治疗策略.
科学领域:
- 生物医学研究的研究.
- 心血管科学 心血管科学
- 分子生物学分子生物学
背景情况:
- 冠状动脉疾病 (CHD) 涉及冠状动脉狭窄,减少心脏的氧气供应.
- 铁亡,一种受调节的细胞死亡,在心脏病中的内皮细胞功能障碍中起作用.
- 丁醇是一种具有潜在治疗性能的黄类化合物.
研究的目的:
- 为了研究卢铁在抑制CHD相关的人类脉内皮细胞 (HUVEC) 中铁的机制.
- 在这种情况下,要确定luteolin对Sirt1/Nrf2通路的调节.
主要方法:
- 建立了一个由牛LDL诱导的HUVEC模型,使用Sirt1静音和素处理.
- 通过使用qRT-PCR和Western blot验证了Sirt1沉默.
- 进行了分子对接和DARTS测试以确认素-Sirt1结合.
- 评估了细胞活力,铁亡标志物 (MDA,GSH,Fe2+,ROS,GPX4,FTH,FTL) 和细胞迁移.
主要成果:
- 氨酸激活了Sirt1/Nrf2轴,并在HUVEC中抑制了ox-LDL诱导的铁亡.
- 素增强了细胞活力,增加了GSH水平,并促进了铁灭抑制剂表达 (HO-1,GPX4,FTH,FTL).
- 氨酸降低了MDA,Fe2+,ROS水平,抑制了铁灭诱导物 (ACSL4,TFRC),并改善了细胞迁移.
- 静止Sirt1反转了luteolin的保护作用,证实了路径依赖.
结论:
- 素通过调节Sirt1/Nrf2通路来抑制CHD中HUVEC中的铁亡.
- 这项研究为 лютеолин作为冠状动脉疾病的潜在治疗剂提供了机制基础.
- 进一步研究基于素的预防和治疗心脏病的策略是有必要的.
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