内皮YAP调解高血糖引起的血小板过活和动脉血栓形成
Zhiyu Li1, Jiachen Zhang1, Zejun Ma1,2
1Tianjin Key Laboratory of Metabolic Diseases, Province and Ministry Co-Sponsored Collaborative Innovation Center for Medical Epigenetics, Department of Physiology and Pathophysiology (Z.L., J.Z., G.Z., X.H., X.Z., Y.Z., J.H.), Tianjin Medical University, China.
Arteriosclerosis, thrombosis, and vascular biology
|November 2, 2023
概括
高血糖症通过内皮YAP和PGE2信号恶化了血小板激活和动脉血栓形成. 用DG-041准EP3可能治疗与糖尿病相关的血栓形成.
科学领域:
- 心血管生物学 心血管生物学
- 内分泌学 在内分泌学.
- 分子医学是分子医学.
背景情况:
- 高血糖,糖尿病的标志,显著增加了动脉血症并发症的风险.
- 将高血糖与血小板激活和动脉血栓形成的确切机制仍然不完全理解.
研究的目的:
- 阐明高血糖症促进血小板过活和血栓形成的分子途径.
- 调查内皮质YAP信号在高血糖驱动的血栓形成中的作用.
- 评估针对糖尿病相关血栓事件的EP3信号的治疗潜力.
主要方法:
- 针对性代谢组,以对糖尿病患者的多不和脂肪酸代谢物进行分析.
- 在活体研究中,使用心动脉损伤模型,对小鼠进行了操作内皮细胞 (EC) 特定YAP表达.
- 流细胞计,凝块收缩试验,RNA测序和生物化学分析,以评估血小板激活和潜在的分子机制.
主要成果:
- 在患有血栓性并发症的糖尿病患者中,血前列腺素E2 (PGE2) 水平升高与血小板激活相关.
- 在高血糖条件下,内皮细胞显示PGE2合成酶 (COX-2,mPGES-1) 的表达增加.
- 内皮YAP激活被确定为一个关键的调解者,将高血糖与增加的COX-2/mPGES-1表达,升高的PGE2,以及随后的血小板激活和动脉血栓形成联系起来.
- 药理上阻断EP3与DG-041进行信号传递,有效降低了血小板过活性和延迟了血栓形成.
结论:
- 高血糖引起的内皮YAP激活通过PGE2/EP3信号通路加剧了血小板激活和动脉血栓形成.
- 通过DG-041准EP3受体,为糖尿病患者的血栓形成管理提供了潜在的治疗策略.
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