普拉蒂科丁D通过通过G蛋白结合雌激素受体介导的eNOS活性增加氧化来逆转瘤缩因子α诱导的内皮功能障碍
Ju Yeon Chae1, Gi Ho Lee1, Seung Yeon Lee1
1College of Pharmacy, Chungnam National University, Daejeon, 34134, Republic of Korea.
普拉提科丁D (PCD) 通过通过eNOS激活来促进氧化 (NO) 生产,从而防止内皮功能障碍. 这种机制涉及G蛋白结合雌激素受体 (GPER) 信号,提供潜在的心血管益处.
科学领域:
- 药理学和毒理学 药理学和毒理学
- 心血管生物学 心血管生物学
- 分子医学是分子医学.
背景情况:
- 普拉提科丁D (PCD) 是来自Platycodon grandiflorum的一种素,表现出各种生物活性.
- 内皮功能障碍是心血管疾病的关键因素.
- 现在正在研究PCD在预防心血管问题的潜力,包括抗动脉样硬化.
研究的目的:
- 调查Platycodin D (PCD) 对瘤坏死因子-α (TNF-α) 诱导的内皮功能障碍的保护作用.
- 阐明PCD作用背后的分子机制,重点关注氧化 (NO) 生产和内皮氧化合成酶 (eNOS) 活性.
- 探索G蛋白结合雌激素受体 (GPER) 在调解PCD影响中的作用.
主要方法:
- 使用MTT和乳酸脱酶试验来评估细胞活力.
- 采用定量PCR,西部涂抹和免疫光技术进行分子分析.
- 进行单细胞粘附,细胞内Ca2+成像和NO生成试验以评估内皮功能.
主要成果:
- 通过降低VCAM-1和ICAM-1表达的调节,PCD减轻了TNF-α诱导的单细胞粘附.
- 通过对Ca2+/calmodulin依赖蛋白激酶β (CaMKKβ),Ca2+/calmodulin依赖蛋白激酶IIα (CaMKIIα) 和AMP激活蛋白激酶 (AMPK) 的酸化,PCD增强了NO生产和eNOS活性.
- 抑制G蛋白结合雌激素受体 (GPER) 消除了PCD对NO生产和eNOS活性的影响,表明GPER依赖信号.
结论:
- 普拉提科丁D (PCD) 通过通过eNOS激活增强NO产生来缓解TNF-α诱导的内皮功能障碍.
- PCD的有益作用通过涉及Ca2+/CaMKKβ/AMPK和Ca2+/CaMKIIα的GPER依赖信号通路进行介导.
- PCD显示出作为预防内皮功能障碍和促进心血管健康的治疗剂的潜力.
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