PMID- 36905457 OWN - NLM STAT- MEDLINE DCOM- 20230714 LR - 20230718 IS - 1877-8755 (Electronic) IS - 1138-7548 (Linking) VI - 79 IP - 3 DP - 2023 Aug TI - Guf1 overexpression improves pancreatic beta cell functions in type 2 diabetes mellitus rats with Roux-en-Y gastric bypass (RYGB) surgery. PG - 569-582 LID - 10.1007/s13105-023-00952-6 [doi] AB - The Roux-en-Y gastric bypass (RYGB) is a one-of-a-kind treatment among contemporary bariatric surgical procedures, and its therapeutic effects for type 2 diabetes mellitus (T2DM) are satisfactory. The present study performed isobaric tags for relative and absolute quantification (iTRAQ) combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis identifying different proteomics between T2DM rats with or without Roux-en-Y gastric bypass (RYGB) surgery, and GTP binding elongation factor GUF1 (Guf1) was first found to be significantly upregulated in rats from the T2DM plus RYGB group. In the cellular lipotoxicity model induced by palmitic acid stimulation of rat pancreatic beta cell line, INS-1, palmitic acid treatment inhibited cell viability, suppressed GSIS, promoted lipid droplet formation, promoted cell apoptosis, and induced mitochondrial membrane potential loss. The effects of palmitic acid on INS-1 cells mentioned above could be partially eliminated by Guf1 overexpression but aggravated by Guf1 knockdown. Last, under palmitic acid treatment, Guf1 overexpression promotes the PI3K/Akt and NF-kappaB signaling but inhibits the AMPK activation. Guf1 is upregulated in T2DM rats who received RYGB, and Guf1 overexpression improves cell mitochondrial functions, increases cell proliferation, inhibits cell apoptosis, and promotes cell functions in palmitic acid-treated beta cells. CI - (c) 2023. The Author(s) under exclusive licence to University of Navarra. FAU - Li, Pengzhou AU - Li P AD - Department of General Surgery, Third Xiangya Hospital, Central South University, Changsha, 410013, China. FAU - Dai, Song AU - Dai S AD - Department of General Surgery, Third Xiangya Hospital, Central South University, Changsha, 410013, China. FAU - Gao, Xiang AU - Gao X AD - Department of General Surgery, Third Xiangya Hospital, Central South University, Changsha, 410013, China. FAU - Li, Weizheng AU - Li W AUID- ORCID: 0000-0002-7183-9554 AD - Department of General Surgery, Third Xiangya Hospital, Central South University, Changsha, 410013, China. 2204060326@csu.edu.cn. LA - eng GR - YX202106/Wisdom Accumulation and Talent Cultivation Project of the Third Xiangya Hospital of Central South University/ PT - Journal Article DEP - 20230311 PL - Spain TA - J Physiol Biochem JT - Journal of physiology and biochemistry JID - 9812509 RN - 2V16EO95H1 (Palmitic Acid) RN - EC 2.7.1.- (Phosphatidylinositol 3-Kinases) SB - IM MH - Rats MH - Animals MH - *Diabetes Mellitus, Type 2/surgery/metabolism MH - *Gastric Bypass/methods MH - *Insulin-Secreting Cells/metabolism MH - Chromatography, Liquid MH - Palmitic Acid MH - Phosphatidylinositol 3-Kinases MH - Tandem Mass Spectrometry OTO - NOTNLM OT - Guf1 OT - Pancreatic beta cell OT - Roux-en-Y gastric bypass (RYGB) OT - Type 2 diabetes mellitus (T2DM) EDAT- 2023/03/12 06:00 MHDA- 2023/07/14 13:07 CRDT- 2023/03/11 11:15 PHST- 2022/06/09 00:00 [received] PHST- 2023/02/20 00:00 [accepted] PHST- 2023/07/14 13:07 [medline] PHST- 2023/03/12 06:00 [pubmed] PHST- 2023/03/11 11:15 [entrez] AID - 10.1007/s13105-023-00952-6 [pii] AID - 10.1007/s13105-023-00952-6 [doi] PST - ppublish SO - J Physiol Biochem. 2023 Aug;79(3):569-582. doi: 10.1007/s13105-023-00952-6. Epub 2023 Mar 11.