miR-369-3p通过调节巨细胞糖酸-GPR91信号传递来改善与糖尿病相关的动脉样硬化
Shruti Rawal1, Vinay Randhawa1, Syed Husain Mustafa Rizvi2,3
1Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA.
Cardiovascular research
|May 4, 2024
概括
微RNA-369-3p (miR-369-3p) 通过向糖酸受体GPR91.1,可以阻止糖尿病加速动脉样硬化. 在巨细胞中恢复miR-369-3p水平可以减少炎症和斑块大小.
科学领域:
- 心血管研究研究心血管研究
- 免疫代谢过程中的免疫代谢.
- 分子生物学分子生物学
背景情况:
- 糖尿病通过调节巨细胞免疫代谢来加速动脉样硬化.
- 微RNAs (miRNAs) 在细胞信号传递中发挥作用,但它们在糖尿病相关动脉样硬化中的治疗潜力在很大程度上尚未被探索.
- 确定新的标以恢复代谢平衡和解决糖尿病动脉样硬化的炎症至关重要.
研究的目的:
- 研究miR-369-3p在糖尿病加速动脉样硬化中的作用.
- 为了确定miR-369-3p是否可以调节巨细胞代谢和炎症.
- 在动脉样硬化小鼠模型中探索miR-369-3p的治疗潜力.
主要方法:
- 在小鼠大动脉病变和人类外周血液单核细胞中进行miRNA分析.
- 在体外研究中,使用氧化低密度脂蛋白 (oxLDL) 处理的骨髓衍生巨细胞 (BMDMs).
- 代谢概况,RNA测序和治疗用miR-369-3p在Ldlr-/-小鼠中的模仿剂.
- 评估斑块大小,炎症标志物,以及巨细胞细胞分裂.
主要成果:
- 在糖尿病小鼠和冠状动脉疾病患者的动脉样硬化病变中观察到减少miR-369-3p的表达.
- 巨细胞中的miR-369-3p过度表达阻断了oxLDL诱导的糖酸盐增加,减少了线粒体呼吸,并抑制了炎症.
- miR-369-3p直接针对GPR91,减轻oxLDL诱导的炎症酶激活.
- 在小鼠中,治疗性miR-369-3p的使用减少了斑块大小,炎症细胞透,并增强了细胞增生.
- 一个GPR91抗剂减少了oxLDL诱导的人类糖尿病单细胞的炎症.
结论:
- 在糖尿病相关动脉样硬化中,miR-369-3p作为巨细胞免疫代谢的关键调节剂.
- 用miR-369-3p针对GPR91提供了一个潜在的治疗策略,可以阻止糖尿病患者的动脉样硬化进展.
- 恢复miR-369-3p水平可以促进炎症的解消,并改善动脉样硬化斑块的特征.
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