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Stretching skeletal muscle in vitro: does it replicate in vivo physiology?
1Muscle Cellular and Molecular Physiology Research Group, ISPAR Bedford, University of Bedfordshire, Bedford, UK.
Biotechnology Letters
|April 9, 2011
Summary
Skeletal muscle adapts to mechanical loading via molecular mechanisms. In vitro stretching of engineered muscle constructs aims to mimic these in vivo adaptations for research purposes.
Area of Science:
- Muscle physiology and molecular biology.
- Biomedical engineering and tissue engineering.
Background:
- Skeletal muscle exhibits remarkable adaptability to mechanical stimuli like exercise.
- Molecular mechanisms drive muscle mass increase and contractile phenotype changes.
- In vitro systems using mechanical loading or stretching are developed to study muscle adaptation.
Purpose of the Study:
- To review stretching regimes used for engineered muscle constructs.
- To assess the efficacy of in vitro systems in mimicking in vivo muscle adaptation.
Main Methods:
- Review of literature on in vitro stretching techniques for engineered muscle.
- Comparative analysis of in vitro system outcomes versus in vivo muscle physiology.
Main Results:
- Engineered muscle constructs can undergo adaptations through stretching.
- The degree to which in vitro systems recapitulate in vivo physiology is variable.
Conclusions:
- In vitro stretching offers a valuable tool for studying muscle adaptation mechanisms.
- Further refinement of in vitro models is needed to fully replicate in vivo muscle responses.
