由干扰素基因刺激器,细胞质DNA传感器调节的先天免疫系统,调节内皮功能
Phuong Tran Pham1,2, Oyunbileg Bavuu1, Joo-Ri Kim-Kaneyama3
1Department of Cardiovascular Medicine Tokushima University Graduate School of Biomedical Sciences Tokushima Japan.
Journal of the American Heart Association
|November 10, 2023
概括
干扰素基因刺激器 (STING) 信号传递有助于高血糖引起的内皮功能障碍. 抑制STING在糖尿病小鼠中改善了这种功能障碍,这表明STING是治疗目标.
科学领域:
- 免疫学 免疫学 免疫学
- 心血管生物学 心血管生物学
- 代谢障碍 代谢障碍 代谢障碍
背景情况:
- 代谢障碍,如高血糖症,诱导无菌炎症,损害内皮功能.
- 高血糖症引发炎症和内皮功能障碍的确切机制尚未完全理解.
- 干扰素基因刺激器 (STING),一个细胞质DNA传感器,与炎症性疾病的发病有关.
研究的目的:
- 为了调查STING在内皮功能障碍中所扮演的角色,与链条毒素诱导的糖尿病相关.
- 探索STING信号作为与高血糖相关的内皮功能障碍的潜在治疗标.
主要方法:
- 链毒素 (STZ) 用于诱导野生型和STING缺陷小鼠的糖尿病.
- 通过测量对乙胆和酸的反应来评估血管功能.
- 在实验室中使用人类静脉内皮细胞治疗STING激动剂 (循环GMP-AMP,线粒体DNA) 和抑制剂 (C-176) 进行了STING激活的研究.
主要成果:
- STZ注射增加了小鼠主动脉中的STING表达和DNA损伤标志物.
- 在糖尿病小鼠中,遗传删除STING或用STING抑制剂 (C-176) 治疗改善了内皮功能障碍.
- 在体外激活STING会增加炎症标志物和破坏内皮氧化合成酶酸化.
结论:
- 由STING介导的DNA损伤反应途径在高血糖引起的内皮功能障碍中发挥着关键作用.
- 针对STING信号提供了一个有前途的治疗策略,用于管理糖尿病患者内皮功能障碍.
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