间歇性禁食诱导的Orm2通过GP130/IL23R-p38级联促进脂肪棕色化
Xuejuan Zhu1, Xinran Wang1,2, Jingang Wang1
1Department of Endocrinology, Tongji Hospital Affiliated to Tongji University, School of Medicine, Tongji University, Shanghai, 200092, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|September 9, 2024
概括
间歇性禁食诱导Orosomucoid 2 (Orm2),一种促进脂肪色和减肥的肝脏蛋白. 这一发现通过了解Orm2-GP130/IL23R-p38信号通路,为肥胖症提供了一个新的治疗标.
科学领域:
- 代谢和内分泌学
- 分子生物学分子生物学
- 肥胖问题研究研究
背景情况:
- 间歇性禁食 (IF) 在肥胖管理中的作用是公认的,但潜在的分子机制尚未完全理解.
- 识别由IF激活的新信号通路对于开发有针对性的肥胖干预措施至关重要.
- 肝素,肝脏分泌的因素,越来越多地涉及到代谢调节.
研究的目的:
- 为了识别间歇性禁食诱导的新型肝激素.
- 阐明IF诱导因素调节脂肪组织的机制.
- 调查肥胖中已识别的因素的治疗潜力.
主要方法:
- 研究了Orosomucoid 2 (Orm2) 作为一种IF诱导的肝毒素.
- 使用过氧体增殖器激活受体α (PPARα) 信号通路分析.
- 检查了Orm2与脂肪组织中的糖蛋白130/介质素23受体 (GP130/IL23R) 的结合.
- 评估了p38中位素激活蛋白激酶 (p38-MAPK) 信号传递的作用.
- 在肥胖小鼠和人类遗传关联研究中进行了实验.
主要成果:
- 间歇性禁食诱导了通过PPARα的Orm2表达和分泌.
- 通过与GP130/IL23R结合并激活p38-MAPK,Orm2激活了脂肪色.
- 在肥胖小鼠中,Orm2的使用促进了脂肪色和体重减轻.
- 一种与肥胖相关的人类Orm2变体 (D178E) 呈现出受损的GP130/IL23R结合和降低的色能力.
结论:
- 欧罗苏木可因2 (Orm2) 是一种间歇性禁食诱导的肝激素,可刺激脂肪色.
- 信号通路GP130/IL23R-p38调解了Orm2对热生成的影响.
- Orm2代表了对抗肥胖的潜在治疗目标.
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