期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 114, 期 32, 页码 8596-8601出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1708037114
关键词
mitochondrial synchrony; Activin-beta; complex I perturbation; NF-kappa B/Relish; lipid metabolism
资金
- NIH [5P01CA120964, 5R01DK088718]
- American Diabetes Association [1-16-PDF-108]
Mitochondrial dysfunction has been associated with obesity and metabolic disorders. However, whether mitochondrial perturbation in a single tissue influences mitochondrial function and metabolic status of another distal tissue remains largely unknown. We analyzed the nonautonomous role of muscular mitochondrial dysfunction in Drosophila. Surprisingly, impaired muscle mitochondrial function via complex I perturbation results in simultaneous mitochondrial dysfunction in the fat body (the fly adipose tissue) and subsequent triglyceride accumulation, the major characteristic of obesity. RNA-sequencing (RNA-seq) analysis, in the context of muscle mitochondrial dysfunction, revealed that target genes of the TGF-beta signaling pathway were induced in the fat body. Strikingly, expression of the TGF-beta family ligand, Activin-beta (Act beta), was dramatically increased in the muscles by NF-kappa B/Relish (Rel) signaling in response to mitochondrial perturbation, and decreasing Act beta expression in mitochondrial-perturbed muscles rescued both the fat body mitochondrial dysfunction and obesity phenotypes. Thus, perturbation of muscle mitochondrial activity regulates mitochondrial function in the fat body nonautonomously via modulation of Activin signaling.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据