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Updated: Oct 1, 2025
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Author Spotlight: Mitochondrial Remodeling in Skeletal Muscle
Published on: December 1, 2023
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Mitochondrial Apoptotic Signaling Involvement in Remodeling During Myogenesis and Skeletal Muscle Atrophy
Fasih Ahmad Rahman1, Joe Quadrilatero1
1Department of Kinesiology & Health Sciences, University of Waterloo, Waterloo, ON, Canada.
Seminars in Cell & Developmental Biology
|March 4, 2022
Summary
Mitochondrial apoptotic signaling, involving caspases and BCL2 proteins, is crucial for muscle development and atrophy. Precise control is vital to prevent excessive cell death during skeletal muscle remodeling.
Area of Science:
- Cell Biology
- Muscle Physiology
Background:
- Mitochondria are central to apoptotic signaling, impacting cell survival and death.
- Apoptotic signaling pathways are involved in both muscle differentiation and atrophy.
- Dysregulation of these pathways can lead to pathological conditions.
Purpose of the Study:
- To review the role of mitochondrial apoptotic signaling in skeletal muscle remodeling.
- To discuss its involvement in myogenic differentiation and pathological states like aging and muscular dystrophy.
Main Methods:
- Literature review of studies on mitochondrial apoptosis, caspases, and BCL2 family proteins.
- Analysis of molecular mechanisms underlying skeletal muscle remodeling.
Main Results:
- Caspase activation aids muscle differentiation by cleaving key proteins.
- Mitochondrial nucleases and caspases contribute to myonuclear fragmentation during atrophy.
- BCL2 family proteins regulate the initiation of mitochondrial apoptosis in muscle.
Conclusions:
- Mitochondrial apoptotic signaling is a critical regulator of skeletal muscle homeostasis.
- Understanding these pathways is essential for addressing muscle wasting diseases and aging-related muscle loss.
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