PMID- 31925461 OWN - NLM STAT- MEDLINE DCOM- 20210401 LR - 20210401 IS - 1432-0428 (Electronic) IS - 0012-186X (Linking) VI - 63 IP - 4 DP - 2020 Apr TI - An adipocyte-specific defect in oxidative phosphorylation increases systemic energy expenditure and protects against diet-induced obesity in mouse models. PG - 837-852 LID - 10.1007/s00125-019-05082-7 [doi] AB - AIMS/HYPOTHESIS: Mitochondrial oxidative phosphorylation (OxPhos) is essential for energy production and survival. However, the tissue-specific and systemic metabolic effects of OxPhos function in adipocytes remain incompletely understood. METHODS: We used adipocyte-specific Crif1 (also known as Gadd45gip1) knockout (AdKO) mice with decreased adipocyte OxPhos function. AdKO mice fed a normal chow or high-fat diet were evaluated for glucose homeostasis, weight gain and energy expenditure (EE). RNA sequencing of adipose tissues was used to identify the key mitokines affected in AdKO mice, which included fibroblast growth factor 21 (FGF21) and growth differentiation factor 15 (GDF15). For in vitro analysis, doxycycline was used to pharmacologically decrease OxPhos in 3T3L1 adipocytes. To identify the effects of GDF15 and FGF21 on the metabolic phenotype of AdKO mice, we generated AdKO mice with global Gdf15 knockout (AdGKO) or global Fgf21 knockout (AdFKO). RESULTS: Under high-fat diet conditions, AdKO mice were resistant to weight gain and exhibited higher EE and improved glucose tolerance. In vitro pharmacological and in vivo genetic inhibition of OxPhos in adipocytes significantly upregulated mitochondrial unfolded protein response-related genes and secretion of mitokines such as GDF15 and FGF21. We evaluated the metabolic phenotypes of AdGKO and AdFKO mice, revealing that GDF15 and FGF21 differentially regulated energy homeostasis in AdKO mice. Both mitokines had beneficial effects on obesity and insulin resistance in the context of decreased adipocyte OxPhos, but only GDF15 regulated EE in AdKO mice. CONCLUSIONS/INTERPRETATION: The present study demonstrated that the adipose tissue adaptive mitochondrial stress response affected systemic energy homeostasis via cell-autonomous and non-cell-autonomous pathways. We identified novel roles for adipose OxPhos and adipo-mitokines in the regulation of systemic glucose homeostasis and EE, which facilitated adaptation of an organism to local mitochondrial stress. FAU - Choi, Min Jeong AU - Choi MJ AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea. AD - Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea. FAU - Jung, Saet-Byel AU - Jung SB AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea. FAU - Lee, Seong Eun AU - Lee SE AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea. FAU - Kang, Seul Gi AU - Kang SG AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea. AD - Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea. FAU - Lee, Ju Hee AU - Lee JH AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea. AD - Department of Internal Medicine, Chungnam National University Hospital, Daejeon, 35015, South Korea. FAU - Ryu, Min Jeong AU - Ryu MJ AD - Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, South Korea. FAU - Chung, Hyo Kyun AU - Chung HK AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea. FAU - Chang, Joon Young AU - Chang JY AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea. AD - Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea. FAU - Kim, Yong Kyung AU - Kim YK AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea. FAU - Hong, Hyun Jung AU - Hong HJ AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea. AD - Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea. FAU - Kim, Hail AU - Kim H AD - Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. FAU - Kim, Hyun Jin AU - Kim HJ AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea. AD - Department of Internal Medicine, Chungnam National University Hospital, Daejeon, 35015, South Korea. FAU - Lee, Chul-Ho AU - Lee CH AD - Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea. FAU - Mardinoglu, Adil AU - Mardinoglu A AD - Science for Life Laboratory, KTH - Royal Institute of Technology, Stockholm, Sweden. AD - Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK. FAU - Yi, Hyon-Seung AU - Yi HS AUID- ORCID: 0000-0002-3767-1954 AD - Department of Internal Medicine, Chungnam National University Hospital, Daejeon, 35015, South Korea. jmpbooks@cnuh.co.kr. FAU - Shong, Minho AU - Shong M AUID- ORCID: 0000-0002-0247-7115 AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea. minhos@cnu.ac.kr. AD - Department of Internal Medicine, Chungnam National University Hospital, Daejeon, 35015, South Korea. minhos@cnu.ac.kr. LA - eng GR - 2018R1C1B6004439/National Research Foundation of Korea/International PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200110 PL - Germany TA - Diabetologia JT - Diabetologia JID - 0006777 RN - 0 (Cell Cycle Proteins) RN - 0 (Crif1 protein, mouse) SB - IM MH - Adipocytes/*metabolism/pathology MH - Animals MH - Cell Cycle Proteins/*genetics/metabolism MH - Diet, High-Fat MH - Disease Models, Animal MH - Energy Metabolism/*genetics MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Mice, Obese MH - Obesity/*genetics/metabolism/prevention & control MH - Organ Specificity/genetics MH - Oxidative Phosphorylation OTO - NOTNLM OT - Adipose tissue OT - Energy metabolism OT - Insulin resistance OT - Mitochondria OT - Mitokine EDAT- 2020/01/12 06:00 MHDA- 2021/04/02 06:00 CRDT- 2020/01/12 06:00 PHST- 2019/07/16 00:00 [received] PHST- 2019/10/30 00:00 [accepted] PHST- 2020/01/12 06:00 [pubmed] PHST- 2021/04/02 06:00 [medline] PHST- 2020/01/12 06:00 [entrez] AID - 10.1007/s00125-019-05082-7 [pii] AID - 10.1007/s00125-019-05082-7 [doi] PST - ppublish SO - Diabetologia. 2020 Apr;63(4):837-852. doi: 10.1007/s00125-019-05082-7. Epub 2020 Jan 10.