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Cell Rep. 2016 Jul 19;16(3):757-68. doi: 10.1016/j.celrep.2016.06.040. Epub 2016 Jul 7.

miR-182 Regulates Metabolic Homeostasis by Modulating Glucose Utilization in Muscle.

Author information

1
Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China.
2
Department of Neuromuscular Disease, Children's Hospital of Fudan University, Shanghai 201102, China.
3
National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
4
Shanghai Xuhui Central Hospital, Shanghai Clinical Center, Chinese Academy of Sciences, Shanghai 200031, China.
5
Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200031, China.
6
Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200031, China.
7
Department of Orthopedic Surgery, Huandong Hospital, Fudan University, Shanghai 200040, China.
8
Department of Head and Neck Surgery, Fudan University Cancer Center, and Department of Oncology, Fudan University, Shanghai Medical College, Shanghai 200032, China.
9
The Ministry of Education Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.
10
Department of Epidemiology, National Cardiovascular Centre, Suita, Osaka 565-8565, Japan.
11
Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China; Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing 100021, China.
12
Laboratory for Stem Cell and Retinal Regeneration, Division of Ophthalmic Genetics, The Eye Hospital of Wenzhou Medical University, The State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou 325027, China; Institute of Stem Cell Research, Wenzhou Medical University, Wenzhou 325027, China. Electronic address: jinzb@mail.eye.ac.cn.
13
Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China; Shanghai Xuhui Central Hospital, Shanghai Clinical Center, Chinese Academy of Sciences, Shanghai 200031, China; Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing 100021, China. Electronic address: yinghao@sibs.ac.cn.

Abstract

Understanding the fiber-type specification and metabolic switch in skeletal muscle provides insights into energy metabolism in physiology and diseases. Here, we show that miR-182 is highly expressed in fast-twitch muscle and negatively correlates with blood glucose level. miR-182 knockout mice display muscle loss, fast-to-slow fiber-type switching, and impaired glucose metabolism. Mechanistic studies reveal that miR-182 modulates glucose utilization in muscle by targeting FoxO1 and PDK4, which control fuel selection via the pyruvate dehydrogenase complex (PDHC). Short-term high-fat diet (HFD) feeding reduces muscle miR-182 levels by tumor necrosis factor α (TNFα), which contributes to the upregulation of FoxO1/PDK4. Restoration of miR-182 expression in HFD-fed mice induces a faster muscle phenotype, decreases muscle FoxO1/PDK4 levels, and improves glucose metabolism. Together, our work establishes miR-182 as a critical regulator that confers robust and precise controls on fuel usage and glucose homeostasis. Our study suggests that a metabolic shift toward a faster and more glycolytic phenotype is beneficial for glucose control.

PMID:
27396327
DOI:
10.1016/j.celrep.2016.06.040
[Indexed for MEDLINE]
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