PMID- 30373107 OWN - NLM STAT- MEDLINE DCOM- 20190205 LR - 20190215 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 19 IP - 11 DP - 2018 Oct 26 TI - SREBP-1c-Dependent Metabolic Remodeling of White Adipose Tissue by Caloric Restriction. LID - 10.3390/ijms19113335 [doi] LID - 3335 AB - Caloric restriction (CR) delays the onset of many age-related pathophysiological changes and extends lifespan. White adipose tissue (WAT) is not only a major tissue for energy storage, but also an endocrine tissue that secretes various adipokines. Recent reports have demonstrated that alterations in the characteristics of WAT can impact whole-body metabolism and lifespan. Hence, we hypothesized that functional alterations in WAT may play important roles in the beneficial effects of CR. Previously, using microarray analysis of WAT from CR rats, we found that CR enhances fatty acid (FA) biosynthesis, and identified sterol regulatory element-binding protein 1c (SREBP-1c), a master regulator of FA synthesis, as a mediator of CR. These findings were validated by showing that CR failed to upregulate factors involved in FA biosynthesis and to extend longevity in SREBP-1c knockout mice. Furthermore, we revealed that SREBP-1c is implicated in CR-associated mitochondrial activation through the upregulation of peroxisome proliferator-activated receptor gamma coactivator-1alpha (PGC-1alpha), a master regulator of mitochondrial biogenesis. Notably, these CR-associated phenotypes were observed only in WAT. We conclude that CR induces SREBP-1c-dependent metabolic remodeling, including the enhancement of FA biosynthesis and mitochondrial activation, via PGC-1alpha in WAT, resulting in beneficial effects. FAU - Kobayashi, Masaki AU - Kobayashi M AUID- ORCID: 0000-0002-0985-0322 AD - Laboratory of Molecular Pathology and Metabolic Disease, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan. kobayashim@rs.tus.ac.jp. AD - Translational Research Center, Research Institute of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan. kobayashim@rs.tus.ac.jp. FAU - Fujii, Namiki AU - Fujii N AD - Laboratory of Molecular Pathology and Metabolic Disease, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan. 3b16710@ed.tus.ac.jp. FAU - Narita, Takumi AU - Narita T AD - Epidemiology and Prevention Division, Research Center for Cancer Prevention and Screening, National Cancer Center, Tsukiji, Chuo-ku, Tokyo 104-0045, Japan. tanarita@ncc.go.jp. FAU - Higami, Yoshikazu AU - Higami Y AD - Laboratory of Molecular Pathology and Metabolic Disease, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan. higami@rs.noda.tus.ac.jp. AD - Translational Research Center, Research Institute of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan. higami@rs.noda.tus.ac.jp. LA - eng GR - 17K13231/Grants-in-Aid for Young Scientists (B)/ GR - 17H02179/Grants-in-Aid for Scientific Research (B)/ GR - 2014-2018/MEXT Supported Program for the Strategic Research Foundation at Private Universities/ PT - Journal Article PT - Review DEP - 20181026 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Fatty Acids) RN - 0 (Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha) RN - 0 (Sterol Regulatory Element Binding Protein 1) SB - IM MH - Adipose Tissue, White/*metabolism MH - Animals MH - *Caloric Restriction/methods MH - Fatty Acids/metabolism MH - Humans MH - Lipogenesis MH - Longevity MH - Mitochondria/metabolism MH - Organelle Biogenesis MH - Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha/metabolism MH - Sterol Regulatory Element Binding Protein 1/*metabolism PMC - PMC6275055 OTO - NOTNLM OT - PGC-1alpha OT - SREBP-1c OT - caloric restriction OT - fatty acid synthesis OT - mitochondrion OT - white adipose tissue COIS- The authors declare no conflict of interest. EDAT- 2018/10/31 06:00 MHDA- 2019/02/06 06:00 PMCR- 2018/11/01 CRDT- 2018/10/31 06:00 PHST- 2018/08/31 00:00 [received] PHST- 2018/10/21 00:00 [revised] PHST- 2018/10/21 00:00 [accepted] PHST- 2018/10/31 06:00 [entrez] PHST- 2018/10/31 06:00 [pubmed] PHST- 2019/02/06 06:00 [medline] PHST- 2018/11/01 00:00 [pmc-release] AID - ijms19113335 [pii] AID - ijms-19-03335 [pii] AID - 10.3390/ijms19113335 [doi] PST - epublish SO - Int J Mol Sci. 2018 Oct 26;19(11):3335. doi: 10.3390/ijms19113335.