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Activating Autophagy by Aerobic Exercise in Mice
Published on: February 3, 2017
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Sarcopenia targeting with autophagy mechanism by exercise
Sung Sup Park1, Young-Kyo Seo2, Ki-Sun Kwon1
1Aging Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141; Department of Life Science, University of Science and Technology (UST), Daejeon 34113, Korea.
BMB Reports
|December 12, 2018
Summary
Exercise-induced autophagy activation aids skeletal muscle regeneration and combats sarcopenia by improving muscle mass and function. Understanding these pathways offers therapeutic targets for age-related muscle loss.
Area of Science:
- Cellular Biology
- Gerontology
- Muscle Physiology
Background:
- Sarcopenia, the age-related loss of skeletal muscle, significantly diminishes quality of life.
- Autophagy, a cellular process, is implicated in reducing muscle atrophy, but its precise role in aging remains under investigation.
Purpose of the Study:
- To review the current understanding of exercise-induced autophagy activation in skeletal muscle.
- To explore the role of autophagy in skeletal muscle regeneration, remodeling, and sarcopenia intervention.
Main Methods:
- Literature review focusing on autophagy pathways in skeletal muscle aging.
- Analysis of signaling pathways like AMPK-ULK1 and FoxO/PGC-1ɑ in autophagy induction.
- Examination of autophagy's role in satellite cell differentiation and muscle mass regulation.
Main Results:
- Aging dysregulates autophagy flux, impairing lysosomal processes crucial for muscle biogenesis.
- AMPK-ULK1 and FoxO/PGC-1ɑ signaling pathways are key inducers of skeletal muscle autophagy.
- Autophagy regulates stem cell fate, influencing satellite cell differentiation and muscle fiber formation.
Conclusions:
- Autophagy plays a critical role in skeletal muscle aging and sarcopenia.
- Targeting autophagy-related signaling pathways presents a potential therapeutic strategy for sarcopenia.
- Exercise-induced autophagy activation is vital for muscle regeneration and combating age-related muscle decline.
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