互乐金-17A加剧了高盐诱导的高胆固醇血清症的发展
Yanan Ouyang1,2,3, Jianxin Ni1, Man Wang4
1Department of Urology, Xi'an People's Hospital (Xi'an Fourth Hospital), School of Life Sciences and Medicine, Northwest University, Xi'an, Shaanxi, China.
Molecular nutrition & food research
|July 10, 2025
概括
高盐摄入量通过激活IL-17信号通路来提高血压和胆固醇. 抑制IL-17A可以治疗盐引起的高血压和高胆固醇血症.
科学领域:
- 分子生物学分子生物学
- 心血管生理学心血管生理学
- 代谢的恒常状态 (metabolic homeostasis) 是指代谢的恒常状态.
背景情况:
- 饮食盐摄入量是高血压和心血管疾病的主要危险因素.
- 连接高盐消耗与脂质失调症的精确分子机制仍然不完全理解.
- 介质蛋白-17 (IL-17) 信号传递已被涉及到炎症状况,但其在盐引起的代谢功能障碍中的作用尚不清楚.
研究的目的:
- 阐明高盐饮食 (HSD) 影响血压和胆固醇代谢的分子途径.
- 调查IL-17信号传递在调解HSD的不良影响中的作用.
- 评估针对盐引起的高血压和高胆固醇血症的IL-17通路的治疗潜力.
主要方法:
- 在对盐敏感的达尔大鼠中建立高血压和高胆固醇血症模型,这些大鼠吃了8%的NaCl饮食.
- RNA测序 (RNA-seq) 和逆转录定量聚合酶链反应 (RT-qPCR) 用于分析肝脏组织中的基因表达.
- 使用HepG2细胞和人类静脉内皮细胞 (HUVEC) 进行体外研究,以评估IL-17受体A (IL-17RA) 功能及其对固醇调节元素结合蛋白2 (SREBP2) 和氧化 (NO) 生产的影响.
- 在体内给予一种针对老鼠的抗IL-17A抗体.
主要成果:
- 在老鼠中,HSD成功诱导高血压,血清总胆固醇 (TC) 和低密度脂蛋白胆固醇 (LDL-C) 的升高.
- 胆固醇生物合成途径在肝脏中被激活,与血清胆固醇升高相关.
- 确定IL-17信号激活是关键因素,促进SREBP2的核进入,并抑制内皮细胞中NO的产生.
- 抗IL-17A抗体治疗显著降低了血压,并改善了HSD养大鼠的脂质概况.
结论:
- 高盐饮食通过激活IL-17信号通路来促进高血压和高胆固醇血症.
- 通过SREBP2,IL-17RA信号升级调节胆固醇生物合成,并通过减少氧化的产生来损害内皮功能.
- 向IL-17A代表了一种有前途的治疗策略,用于管理盐引起的心血管和代谢疾病.
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