PMID- 34116237 OWN - NLM STAT- MEDLINE DCOM- 20221215 LR - 20221230 IS - 2213-2961 (Electronic) IS - 2095-2546 (Print) IS - 2213-2961 (Linking) VI - 11 IP - 6 DP - 2022 Nov TI - Exercise attenuates angiotensinⅡ-induced muscle atrophy by targeting PPARgamma/miR-29b. PG - 696-707 LID - S2095-2546(21)00067-3 [pii] LID - 10.1016/j.jshs.2021.06.002 [doi] AB - BACKGROUND: Exercise is beneficial for muscle atrophy. Peroxisome proliferator-activated receptor gamma (PPARgamma) and microRNA-29b (miR-29b) have been reported to be responsible for angiotensinⅡ (AngⅡ)-induced muscle atrophy. However, it is unclear whether exercise can protect AngⅡ-induced muscle atrophy by targeting PPARgamma/miR-29b. METHODS: Skeletal muscle atrophy in both the control group and the run group was established by AngⅡ infusion; after 1 week of exercise training, the mice were sacrificed, and muscle weight was determined. Myofiber size was measured by hematoxylin-eosin and wheat-germ agglutinin staining. Apoptosis was evaluated by terminal deoxynucleotidyl transferase dUTP nick end labeling staining. The expression level of muscle atrogenes, including F-box only protein 32 (FBXO32, also called Atrogin-1) and muscle-specific RING-finger 1 (MuRF-1), the phosphorylation level of protein kinase B (PKB, also called AKT)/forkhead box O3A (FOXO3A)/mammalian target of rapamycin (mTOR) pathway proteins, the expression level of PPARgamma and apoptosis-related proteins, including B-cell lymphoma-2 (Bcl-2), Bcl-2-associated X (Bax), cysteine-aspartic acid protease 3 (caspase-3), and cleaved-caspase-3, were determined by western blot. The expression level of miR-29b was checked by reverse-transcription quantitative polymerase chain reaction. A PPARgamma inhibitor (T0070907) or adeno-associated virus serotype-8 (AAV8)-mediated miR-29b overexpression was used to demonstrate whether PPARgamma activation or miR-29b inhibition mediates the beneficial effects of exercise in AngⅡ-induced muscle atrophy. RESULTS: Exercise can significantly attenuate AngⅡ-induced muscle atrophy, which is demonstrated by increased skeletal muscle weight, cross-sectional area of myofiber, and activation of AKT/mTOR signaling and by decreased atrogenes expressions and apoptosis. In AngⅡ-induced muscle atrophy mice models, PPARgamma was elevated whereas miR-29b was decreased by exercise. The protective effects of exercise in AngⅡ-induced muscle atrophy were inhibited by a PPARgamma inhibitor (T0070907) or adeno-associated virus serotype-8 (AAV8)-mediated miR-29b overexpression. CONCLUSION: Exercise attenuates AngⅡ-induced muscle atrophy by activation of PPARgamma and suppression of miR-29b. CI - Copyright (c) 2021. Production and hosting by Elsevier B.V. FAU - Liu, Qi AU - Liu Q AD - Cardiac Regeneration and Ageing Lab, Institute of Cardiovascular Sciences, School of Life Science, Shanghai University, Shanghai 200444, China. FAU - Chen, Liyang AU - Chen L AD - Cardiac Regeneration and Ageing Lab, Institute of Cardiovascular Sciences, School of Life Science, Shanghai University, Shanghai 200444, China. FAU - Liang, Xuchun AU - Liang X AD - Cardiac Regeneration and Ageing Lab, Institute of Cardiovascular Sciences, School of Life Science, Shanghai University, Shanghai 200444, China. FAU - Cao, Yuqing AU - Cao Y AD - Cardiac Regeneration and Ageing Lab, Institute of Cardiovascular Sciences, School of Life Science, Shanghai University, Shanghai 200444, China. FAU - Zhu, Xinyue AU - Zhu X AD - Cardiac Regeneration and Ageing Lab, Institute of Cardiovascular Sciences, School of Life Science, Shanghai University, Shanghai 200444, China. FAU - Wang, Siqi AU - Wang S AD - Cardiac Regeneration and Ageing Lab, Institute of Cardiovascular Sciences, School of Life Science, Shanghai University, Shanghai 200444, China. FAU - Li, Jin AU - Li J AD - Cardiac Regeneration and Ageing Lab, Institute of Cardiovascular Sciences, School of Life Science, Shanghai University, Shanghai 200444, China. FAU - Gao, Juan AU - Gao J AD - Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China. Electronic address: juangao@shu.edu.cn. FAU - Xiao, Junjie AU - Xiao J AD - Cardiac Regeneration and Ageing Lab, Institute of Cardiovascular Sciences, School of Life Science, Shanghai University, Shanghai 200444, China; Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai 200444, China. Electronic address: junjiexiao@shu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210608 PL - China TA - J Sport Health Sci JT - Journal of sport and health science JID - 101606001 RN - 0 (PPAR gamma) RN - EC 3.4.22.- (Caspase 3) RN - 0 (MicroRNAs) RN - 0 (Proto-Oncogene Proteins c-bcl-2) SB - IM MH - Mice MH - Animals MH - *PPAR gamma MH - Caspase 3 MH - Muscular Atrophy/prevention & control MH - *MicroRNAs MH - Proto-Oncogene Proteins c-bcl-2 MH - Mammals PMC - PMC9729927 OTO - NOTNLM OT - Angiotensin Ⅱ OT - Exercise OT - Muscle atrophy OT - PPARgamma OT - miR-29b EDAT- 2021/06/12 06:00 MHDA- 2022/12/15 06:00 PMCR- 2021/06/08 CRDT- 2021/06/11 20:15 PHST- 2021/02/17 00:00 [received] PHST- 2021/04/11 00:00 [revised] PHST- 2021/05/07 00:00 [accepted] PHST- 2021/06/12 06:00 [pubmed] PHST- 2022/12/15 06:00 [medline] PHST- 2021/06/11 20:15 [entrez] PHST- 2021/06/08 00:00 [pmc-release] AID - S2095-2546(21)00067-3 [pii] AID - 10.1016/j.jshs.2021.06.002 [doi] PST - ppublish SO - J Sport Health Sci. 2022 Nov;11(6):696-707. doi: 10.1016/j.jshs.2021.06.002. Epub 2021 Jun 8.