糖尿病内皮细胞糖原合成酶激酶3β激活诱导VCAM1内皮细胞分泌
Masuma Akter Brishti1, Somasundaram Raghavan1, Kennedy Lamar1
1Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, TN 38163, USA.
International journal of molecular sciences
|September 28, 2023
概括
糖尿病内皮细胞由于激活的GSK3β,更容易溶解VCAM1,增加心血管风险. 抑制GSK3β可能会减少这种流失,并提供心脏保护.
科学领域:
- 心血管生物学 心血管生物学
- 免疫学 免疫学 免疫学
- 内分泌学 在内分泌学.
背景情况:
- 溶性细胞粘附分子 (sCAMs),像溶性VCAM1 (sVCAM1),是具有免疫功能的细胞表面分子的碎片.
- 升高的sVCAM1与不良的心血管疾病 (CVD) 结果有关,这表明VCAM1在血管病理学中的作用.
- 循环sCAMs的来源,特别是在糖尿病中,仍然不清楚,促使对内皮细胞 (ECs) 的研究.
研究的目的:
- 为了调查糖尿病中功能障碍的内皮细胞 (EC) 信号是否会导致VCAM1外皮膜脱落.
- 探索GSK3β信号传递在EC VCAM1表达和糖尿病期间脱落中的作用.
- 评估GSK3β抑制在降低sVCAM1水平方面的治疗潜力.
主要方法:
- 使用可诱导的糖尿病小鼠模型来分析血sVCAM1水平.
- 在内皮细胞 (ECs) 上进行蛋白质分析,以评估VCAM1,ADAM10,ADAM17和GSK3β的表达和激活.
- 用一种GSK3β抑制剂来控制EC,以评估其对VCAM1分泌的影响.
主要成果:
- 糖尿病小鼠表现出可溶性VCAM1 (sVCAM1) 的血水平增加.
- 糖尿病ECs显示VCAM1表达升高,金属蛋白酶ADAM10和ADAM17的水平增加.
- 糖尿病EC中激活的GSK3β与增加的VCAM1和ADAM10/17相关,GSK3β抑制逆转,减少sVCAM1的分泌.
结论:
- 糖尿病ECs通过GSK3β介导的VCAM1上调和ADAM10/17依赖的脱落,导致循环中的sVCAM1水平升高.
- GSK3β信号传递是驱动VCAM1流失在糖尿病血管病变中的关键机制.
- 抑制GSK3β是一种潜在的治疗策略,可以降低sVCAM1水平并减轻糖尿病中心血管风险.
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