内皮腺素受体2A损失通过阻断CREB1-SNAI1驱动的EndMT来缓解糖尿病血管化
Yaqi Zhou1, Dingwei Zhao2, Qian Ma3
1State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China; Department of Physiology, Research Center of Basic Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, 232 Waihuan East Road, University Town, Guangzhou 510006, China; Vascular Biology Center, Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA.
无活化内皮腺受体A2A (ADORA2A) 通过阻断内皮到介质细胞转换 (EndMT) 来降低糖尿病患者的血管化 (VC). 这表明ADORA2A抗剂可以治疗糖尿病并发症.
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:
- 血管化 (VC) 是糖尿病 (DM) 的主要并发症,增加心血管疾病风险和死亡率.
- 血管内皮细胞到介质细胞的转换 (EndMT) 是VC的一个关键机制,血管内皮细胞获得骨质生成潜力.
- 氨酸受体A2A (ADORA2A) 介导的内皮功能障碍与心血管疾病有关,但其在糖尿病VC中的作用尚不清楚.
研究的目的:
- 为了研究内皮ADORA2A在糖尿病血管化的发病过程中的作用.
- 为了确定向内皮ADORA2A是否可以改善糖尿病风险冠状动脉.
主要方法:
- 在糖尿病小鼠模型和高葡萄糖治疗的人类大动脉内皮细胞 (HAECs) 中检查了ADORA2A表达.
- 在糖尿病小鼠中利用了内皮Adora2a的遗传删除和药理抑制 (KW6002).
- 评估了EndMT,骨质分化和沉积在体外和体内.
- 研究了涉及CREB1-SNAI1.1的下游信号通路.
主要成果:
- 在糖尿病小鼠和高葡萄糖暴露的HAECs的内皮中,ADORA2A被上调.
- 在糖尿病小鼠中,内皮的Adora2a删除或ADORA2A抑制显著降低了EndMT,骨质分化和血管化.
- 在HAEC中ADORA2A的淘汰/抑制抑制了高葡萄糖诱导的EndMT和骨质分化.
- 通过CREB1-SNAI1通路,ADORA2A促进了EndMT和骨质分化.
结论:
- 内皮的ADORA2A通过驱动EndMT,在促进糖尿病血管化方面发挥着至关重要的作用.
- 内皮ADORA2A的无活化有效地减轻了糖尿病的VC.
- 阿多拉2A抗剂代表了治疗糖尿病血管并发症的潜在治疗策略.
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