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Updated: May 19, 2026

Detection of Functional Matrix Metalloproteinases by Zymography
Published on: November 8, 2010
Matrix metalloproteinases in skeletal muscles: friends or foes?
1UMRS 974 INSERM-Université Paris 6-CNRS UMR 7215, Institut de Myologie, Bâtiment Babinski, Groupe Hospitalier Pitié-Salpêtrière, 47, boulevard de l'Hôpital, 75651 Paris Cedex 13, France. h.alameddine@institut-myologie.org
Abstract:
Matrix metalloproteinases (MMPs) are members of an enzyme family that require a zinc ion at their active site. Active at neutral pH, they catalyze normal turnover of extracellular matrix (ECM) and are critical for maintaining tissue allostasis. Subtle coordination between MMP activity and its inhibition by tissue inhibitors of metalloproteinases (TIMPs) insures ECM homeostasis. Loss of control of MMPs expression/activity in numerous pathologies usually associates with host response to injuries, facilitation of disease progression and significant tissue damage. In skeletal muscles, fragmentary knowledge of MMPs/TIMPs regulation and function underscores the need for a better understanding of their role which may lead to therapeutic alternatives. This review presents the current knowledge of MMPs in the biology and pathology of skeletal muscles and puts into perspective therapeutic alternatives that could be challenged in experimental models or that might emerge from in depth investigation of MMPs/TIMPs status in neuromuscular diseases.
Insights
Matrix metalloproteinases (MMPs) regulate extracellular matrix (ECM) turnover. Dysregulation of MMPs and their inhibitors (TIMPs) in skeletal muscle impacts disease, necessitating further research for therapeutic strategies.
Area of Science:
- Biochemistry and Molecular Biology
- Skeletal Muscle Physiology
- Pathology
Background:
- Matrix metalloproteinases (MMPs) are zinc-dependent enzymes crucial for extracellular matrix (ECM) remodeling and tissue homeostasis.
- The balance between MMPs and tissue inhibitors of metalloproteinases (TIMPs) is vital for maintaining ECM integrity.
- Impaired MMP regulation is implicated in various pathologies, leading to tissue damage and disease progression.
Purpose of the Study:
- To review the current understanding of MMPs and TIMPs in skeletal muscle biology and pathology.
- To highlight the knowledge gaps in MMP/TIMP regulation and function within skeletal muscle.
- To explore potential therapeutic avenues targeting MMPs/TIMPs in neuromuscular diseases.
Main Methods:
- Literature review of existing research on MMPs and TIMPs in skeletal muscle.
- Analysis of the role of MMPs in ECM turnover and tissue homeostasis.
- Examination of MMP dysregulation in skeletal muscle pathologies and neuromuscular diseases.
Main Results:
- MMPs are essential for normal ECM turnover and tissue allostasis in skeletal muscle.
- Loss of MMP/TIMP control contributes to skeletal muscle injury, disease progression, and tissue damage.
- Fragmentary knowledge exists regarding MMP/TIMP regulation and function in skeletal muscles.
Conclusions:
- A comprehensive understanding of MMPs/TIMPs in skeletal muscle is needed to develop effective therapeutic strategies.
- Investigating MMP/TIMP status in neuromuscular diseases may reveal novel therapeutic targets.
- Further research into MMPs/TIMPs holds promise for future therapeutic interventions in skeletal muscle disorders.
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