硫化在高血压状态下通过SIRT6抗炎信号来改善血管内皮功能
Fan Lu1, Xueyuan Qin1,2, Shanshan Lu1
1Department of Physiology, Institute of Basic Medicine, Hebei Medical University, Shijiazhuang 050017, China.
Acta biochimica et biophysica Sinica
|November 25, 2025
概括
硫化 (H2S) 通过恢复sirtuin 6 (SIRT6) 表达和抑制炎症,防止高血压引起的内皮功能障碍. 这项研究强调了H2S作为血管健康的潜在治疗剂.
科学领域:
- 心血管生物学 心血管生物学
- 分子医学是分子医学.
- 内分泌学 在内分泌学.
背景情况:
- 高血压经常导致内皮功能障碍,标志着血管扩张受损和炎症增加.
- 关键标志物包括氧化物 (NO) 生物可用性降低和高素-6 (IL-6) 和细胞间粘附分子-1 (ICAM-1).
研究的目的:
- 调查硫化 (H2S) 在血管激素II (Ang II) 诱导的内皮功能障碍中的保护作用.
- 阐明涉及素6 (SIRT6) 的潜在分子机制.
主要方法:
- 使用Ang II诱导的内皮功能障碍的小鼠模型.
- 给H2S捐赠者GYY4137和使用内皮特异性cystathionine-γ-lyase (CSE) 缺乏的小鼠.
- 评估了H2S和SIRT6抑制对血管功能和炎症的影响.
主要成果:
- GYY4137治疗逆转了Ang II诱导的内皮损伤,抑制了炎症,并改善了血管扩张功能.
- 在CSE缺乏的小鼠中,H2S补充改善了炎症和内皮功能障碍.
- 抑制SIRT6消除了H2S的保护作用,表明其关键作用.
结论:
- 硫化 (H2S) 通过激活SIRT6抗炎途径来保护血管内皮功能.
- H2S捐赠者GYY4137证明了与高血压相关的内皮功能障碍的治疗潜力.
- SIRT6是H2S诱导的血管保护的关键媒介.
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