H19 lncRNA触发铁,在体外加剧ox-LDL诱导的动脉内皮细胞损伤
Feng Tang1, Long-Hai Tian2, Xiao-Han Zhu1
1Department of Cardiology, The Second People's Hospital of Guiyang, Guiyang, Guizhou, China.
Clinical hemorheology and microcirculation
|July 5, 2024
概括
长非编码RNA H19促进铁亡,恶化了LDL引起的动脉内皮细胞损伤. 这一发现澄清了H19和动脉样硬化之间的联系,提供了新的治疗点.
科学领域:
- 分子生物学分子生物学
- 心血管研究研究心血管研究
- 细胞病理学细胞病理学
背景情况:
- 长非编码RNA H19 在动脉样硬化中的铁亡中的作用尚未完全理解.
- 动脉样硬化涉及复杂的细胞机制,包括ferroptosis,一个调节的细胞死亡途径.
研究的目的:
- 阐明将lncRNA H19和动脉样硬化中的铁死联系在一起的机制.
- 确定针对H19-ferroptosis轴的动脉样硬化新型治疗策略.
主要方法:
- 在人类大动脉内皮细胞 (HAEC) 中评估了铁亡标志物 (细胞活力,MDA,GSH,铁离子).
- 通过西布洛特的 Ferroptosis 相关蛋白质的量化蛋白质表达.
- 操纵的lncRNA H19水平 (shRNA,过度表达) 和铁灭诱导剂 (Erastin) 在牛LDL处理的HAEC中.
主要成果:
- 暴露于ox-LDL显著降低了HAEC的活力,并提高了ACSL4的表达.
- 氧-LDL治疗降低了SLC7A11和GPX4的表达,这是铁亡的关键调节者.
- 发现 lncRNA H19 增强铁亡并加剧ox-LDL诱导的内皮细胞损伤.
结论:
- lncRNA H19在促进铁亡中起着至关重要的作用.
- 在暴露于LDL的背景下,lncRNA H19会加剧动脉内皮细胞损伤.
- 准lncRNA H19-ferroptosis通路为动脉样硬化提供了一个潜在的治疗途径.
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