PMID- 31003779 OWN - NLM STAT- MEDLINE DCOM- 20200710 LR - 20200710 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 513 IP - 4 DP - 2019 Jun 11 TI - Inhibition of GIP signaling extends lifespan without caloric restriction. PG - 974-982 LID - S0006-291X(19)30658-8 [pii] LID - 10.1016/j.bbrc.2019.04.036 [doi] AB - AIMS/INTRODUCTION: Caloric restriction (CR) promotes longevity and exerts anti-aging effects by increasing Sirtuin production and activation. Gastric inhibitory polypeptide (GIP), a gastrointestinal peptide hormone, exerts various effects on pancreatic beta-cells and extra-pancreatic tissues. GIP promotes glucose-dependent augmentation of insulin secretion and uptake of nutrients into the adipose tissue. MATERIALS AND METHODS: Gipr(-/-) and Gipr(+/+) mice were used for lifespan analysis, behavior experiments and gene expression of adipose tissue and muscles. 3T3-L1 differentiated adipocytes were used for Sirt1 and Nampt expression followed by treatment with GIP and alpha-lipoic acid. RESULTS: We observed that GIP receptor-knockout (Gipr(-/-)) mice fed normal diet showed an extended lifespan, increased exploratory and decreased anxiety-based behaviors, which are characteristic behavioral changes under CR. Moreover, Gipr(-/-) mice showed increased Sirt1 and Nampt expression in the adipose tissue. GIP suppressed alpha-lipoic acid-induced Sirt1 expression and activity in differentiated adipocytes. CONCLUSIONS: Although maintenance of CR is difficult, food intake and muscle endurance of Gipr(-/-) mice were similar to those of wild-type mice. Inhibition of GIP signaling may be a novel strategy to extend the lifespan of diabetic patients. CI - Copyright (c) 2019 Elsevier Inc. All rights reserved. FAU - Hoizumi, Manabu AU - Hoizumi M AD - Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, Japan. FAU - Sato, Takehiro AU - Sato T AD - Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, Japan. FAU - Shimizu, Tatsunori AU - Shimizu T AD - Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, Japan. FAU - Kato, Shunsuke AU - Kato S AD - Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, Japan. FAU - Tsukiyama, Katsushi AU - Tsukiyama K AD - Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, Japan. FAU - Narita, Takuma AU - Narita T AD - Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, Japan. FAU - Fujita, Hiroki AU - Fujita H AD - Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, Japan. FAU - Morii, Tsukasa AU - Morii T AD - Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, Japan. FAU - Sassa, Mariko Harada AU - Sassa MH AD - Institute for Advancement of Clinical and Translational Science, Kyoto University Hospital, Japan. FAU - Seino, Yutaka AU - Seino Y AD - Kansai Electric Power Medical Research Institute, Osaka, Japan. FAU - Yamada, Yuichiro AU - Yamada Y AD - Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, Japan. Electronic address: yamada@gipc.akita-u.ac.jp. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190417 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Cytokines) RN - 0 (Receptors, Gastrointestinal Hormone) RN - 59392-49-3 (Gastric Inhibitory Polypeptide) RN - D6H00MV7K8 (gastric inhibitory polypeptide receptor) RN - EC 2.4.2.12 (Nicotinamide Phosphoribosyltransferase) RN - EC 2.4.2.12 (nicotinamide phosphoribosyltransferase, mouse) RN - EC 3.5.1.- (Sirtuin 1) SB - IM MH - 3T3-L1 Cells MH - Adipocytes/metabolism MH - Adipose Tissue/metabolism MH - Animals MH - *Caloric Restriction MH - Cytokines/metabolism MH - Gastric Inhibitory Polypeptide/*antagonists & inhibitors MH - Longevity/*physiology MH - Mice MH - Mice, Knockout MH - Nicotinamide Phosphoribosyltransferase/metabolism MH - Receptors, Gastrointestinal Hormone/genetics MH - Signal Transduction/*physiology MH - Sirtuin 1/metabolism OTO - NOTNLM OT - Adipose tissue OT - Gene expression OT - Mouse EDAT- 2019/04/21 06:00 MHDA- 2020/07/11 06:00 CRDT- 2019/04/21 06:00 PHST- 2019/03/27 00:00 [received] PHST- 2019/04/04 00:00 [accepted] PHST- 2019/04/21 06:00 [pubmed] PHST- 2020/07/11 06:00 [medline] PHST- 2019/04/21 06:00 [entrez] AID - S0006-291X(19)30658-8 [pii] AID - 10.1016/j.bbrc.2019.04.036 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2019 Jun 11;513(4):974-982. doi: 10.1016/j.bbrc.2019.04.036. Epub 2019 Apr 17.