Monotropein Improves Dexamethasone-Induced Muscle Atrophy via the AKT/mTOR/FOXO3a Signaling Pathways |
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| Authors: | Piao Wang Seok Yong Kang Su Jin Kim Yong-Ki Park Hyo Won Jung |
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| Affiliation: | 1.Department of Herbology, College of Korean Medicine, Dongguk University, Gyeongju 38066, Korea; (P.W.); (Y.-K.P.);2.Korean Medicine R&D Center, Dongguk University, Gyeongju 38066, Korea;3.Department of Anesthesiology and Pain Medicine, College of Medicine, Dongguk University, Gyeongju 38066, Korea; |
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| Abstract: | The present study aimed to investigate the effects of monotropein (MON) on improving dexamethasone (DEX)-induced muscle atrophy in mice and C2C12 mouse skeletal muscle cells. The body weights, grip strengths, and muscle weights of mice were assessed. The histological change in the gastrocnemius tissues was also observed through H&E staining. The expression of myosin heavy chain (MyHC), muscle ring finger 1 (MuRF1), and muscle atrophy F-box (Atrogin1) and the phosphorylation of AKT, mTOR, and FOXO3a in the muscle tissues of mice and C2C12 myotubes were analyzed using Western blotting. MON improved muscle atrophy in mice and C2C12 myotubes by regulating catabolic states via the AKT/mTOR/FOXO3a signaling pathways, and enhanced muscle function by the increases of muscle mass and strength in mice. This suggests that MON could be used for the prevention and treatment of muscle atrophy in patients. |
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| Keywords: | AKT/mTOR/FOXO3a signaling pathways Atrogin1 muscle atrophy monotropein dexamethasone MuRF1 |
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