脂肪细胞分泌的ANGPTL2通过抑制AKT/ABCG2信号传递促进高尿血
Longyan Yang1, Ruili Yin1, Ziyu Shan1
1Beijing Key Laboratory of Diabetes Prevention and Research, Center for Endocrine Metabolism and Immune Diseases, Beijing Luhe Hospital Capital Medical University, Beijing, 101149, China.
Free radical biology & medicine
|April 3, 2025
概括
与肥胖相关的阿迪波金血管蛋白类蛋白2 (ANGPTL2) 通过抑制脏AKT/ABCG2信号传递,提高血清尿酸 (UA). 这一发现突出了ANGPTL2作为高尿血的关键因素和潜在的治疗点.
科学领域:
- 内分泌学 在内分泌学.
- 代谢疾病 代谢疾病
- 腎臟病學 (nephrology) 是一種醫學專業.
背景情况:
- 肥胖与高尿血症 (HUA) 密切相关,这种疾病的特征是血清尿酸 (UA) 升高.
- 脂肪组织分泌的激素阿迪波金在调解肥胖引起的HUA中的特定作用仍然不完全理解.
- 确定肥胖和HUA之间的分子联系对于开发有针对性的干预措施至关重要.
研究的目的:
- 调查阿迪波金血管蛋白样蛋白2 (ANGPTL2) 在与肥胖相关的高尿路血症的发病过程中的作用.
- 阐明 ANGPTL2 影响血清尿酸水平的机制.
主要方法:
- 从肥胖HUA患者的体脂肪组织的蛋白质组分析确定了ANGPTL2.
- 使用西部斑块和ELISA的验证证实增加了ANGPTL2水平.
- 动物模型 (Angptl2淘汰赛和脂肪细胞特异性过度表达小鼠) 和细胞培养实验 (HK2和初级管上皮细胞) 用于研究UA调节.
主要成果:
- ANGPTL2在肥胖HUA患者的脂肪组织和循环中显著升高,与血清UA正相关,特别是在男性中.
- Angptl2淘汰赛小鼠显示血UA减少,运输体ABCG2和GLUT9的表达改变.
- 在小鼠和细胞模型中,ANGPTL2过度表达通过抑制管细胞中的AKT/ABCG2信号通路而增加了血UA.
结论:
- 在肥胖患者中,阿迪波金ANGPTL2显著升高,并与血清UA水平独立相关.
- 脂肪细胞分泌的ANGPTL2通过抑制管细胞中的AKT/ABCG2信号通路来促进高尿血.
- ANGPTL2代表了肥胖和HUA之间的关键联系,表明其作为一种新的治疗点的潜力.
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