在脂肪细胞中,TET2和勒之间的负反循环调节了体重
Qin Zeng1,2, Jianfeng Song1,2, Xiaoxiao Sun1,2
1National Clinical Research Center for Metabolic Diseases, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China.
Nature communications
|April 1, 2024
概括
素抑制脂肪细胞中的十-十一转位 (TET) 2,影响肥胖. 抑制TET2降低了勒,揭示了一个反循环,可以抵消代谢功能障碍.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 代谢性疾病是一种代谢性疾病.
- 脂肪细胞生物学 脂肪细胞生物学
背景情况:
- 十-十一转位 (TET) 2对于通过DNA脱甲基化进行表观遗传调节至关重要.
- 在脂肪细胞中TET2的作用,特别是在肥胖期间,仍然在很大程度上未被探索.
研究的目的:
- 研究关于肥胖的脂肪细胞中TET2的调节和功能.
- 阐明脂肪组织中瘦素和TET2之间的关系.
主要方法:
- 通过JAK2-STAT3信号通路分析,研究了丁对脂肪细胞TET2水平的影响.
- 使用脂肪细胞 Tet2 缺乏的小鼠被食高脂肪饮食,以评估对体重增加和瘦素敏感性的影响.
- 研究了TET2和C/EBPα在调节莱普丁基因表达中的相互作用.
- 分析了人类脂肪细胞中的TET2水平,并将脂肪TET2与肥胖和高脂血症相关联.
主要成果:
- 发现丁通过JAK2-STAT3信号抑制脂肪细胞TET2水平.
- 脂肪细胞特异性Tet2缺陷对高脂肪饮食诱导的体重增加和小鼠改善的瘦素敏感性进行了保护.
- TET2与C/EBPα相互作用,通过增加莱普促进剂的5-基甲基细胞素水平来促进莱普基因表达.
- 脂肪TET2水平的降低与人类的肥胖相关的超瘦血症相关,TET2抑制降低了人类脂肪细胞中瘦血素的产生.
结论:
- 在脂肪细胞中,TET2和瘦素之间存在负反循环.
- 脂肪细胞TET2在调节瘦素的产生和能量恒温中发挥着重要作用.
- 这些发现表明,对肥胖引起的代谢功能障碍有补偿机制.
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