PMID- 35303676 OWN - NLM STAT- MEDLINE DCOM- 20220411 LR - 20220505 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 604 DP - 2022 May 14 TI - SIRT3 improves bone regeneration and rescues diabetic fracture healing by regulating oxidative stress. PG - 109-115 LID - S0006-291X(22)00320-5 [pii] LID - 10.1016/j.bbrc.2022.03.001 [doi] AB - Diabetes mellitus (DM), a chronic metabolic disorder caused by uncontrolled high blood glucose levels due to insufficient insulin secretion or insulin resistance, is one of the most common metabolic diseases globally and is responsible for severe socio-economic burden. DM is associated with impaired fracture healing caused by oxidative stress induced-excessive bone resorption. Sirtuin3 (SIRT3), predominantly located in mitochondria, offers great influence on mitochondrial homeostasis, oxidative stress and immune cell function. However, the exact effect of SIRT3 on fracture healing with DM still remains to be elucidated. The present study demonstrated that SIRT3 expression was diminished in diabetic fracture healing and genetic deletion of SIRT3 increased mitochondrial oxidative stress and delayed diabetic bone healing via exacerbating the impact of DM on cartilage and osteoclast. The Honokiol (HKL) extracted from bark of magnolia trees, is a small molecular weight compound with various pharmaceutical properties by activating SIRT3. Our study proved that the SIRT3 agonist HKL could partially reverse the effect of diabetes on fracture healing, which provides a new promising approach for improving fracture healing in DM. CI - Copyright (c) 2022. Published by Elsevier Inc. FAU - Huang, Xiaowen AU - Huang X AD - Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing, 210029, China. FAU - Shu, Haoming AU - Shu H AD - Department of Orthopedics, Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China. FAU - Ren, Changzhen AU - Ren C AD - Department of General Practice, 960th Hospital of PLA, Jinan, 250031, China. Electronic address: renchangzhen90@163.com. FAU - Zhu, Jian AU - Zhu J AD - Department of Orthopedics, Changzheng Hospital, Naval Medical University, No.415 Fengyang Road, Shanghai, 200003, China. Electronic address: zhuspine@smmu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220302 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - EC 3.5.1.- (SIRT3 protein, human) RN - EC 3.5.1.- (Sirtuin 3) SB - IM MH - Bone Regeneration MH - *Diabetes Mellitus MH - Fracture Healing MH - Humans MH - Oxidative Stress MH - *Sirtuin 3/metabolism OTO - NOTNLM OT - Diabetes mellitus OT - Honokiol OT - Osteogenesis OT - Oxidative stress OT - SIRT3 COIS- Declaration of competing interest All authors declare that they have no known conflict of interests or personal relationships that could have appeared to influence the work reported in the present study. EDAT- 2022/03/19 06:00 MHDA- 2022/04/12 06:00 CRDT- 2022/03/18 20:13 PHST- 2022/01/20 00:00 [received] PHST- 2022/02/24 00:00 [revised] PHST- 2022/03/01 00:00 [accepted] PHST- 2022/03/19 06:00 [pubmed] PHST- 2022/04/12 06:00 [medline] PHST- 2022/03/18 20:13 [entrez] AID - S0006-291X(22)00320-5 [pii] AID - 10.1016/j.bbrc.2022.03.001 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2022 May 14;604:109-115. doi: 10.1016/j.bbrc.2022.03.001. Epub 2022 Mar 2.