CORP: Using transgenic mice to study skeletal muscle physiology.

Area of Science:

• Molecular Biology
• Genetics
• Physiology

Background:

• Tissue-specific inducible transgenic mice are crucial for studying gene function and cell biology.
• These models allow temporal and spatial control over genetic modifications in living animals.
• Skeletal muscle research benefits significantly from precise genetic manipulation tools.

Purpose of the Study:

• To provide a comprehensive guide on utilizing two inducible transgenic systems for skeletal muscle research.
• To detail the application of Cre-loxP and Tet-ON/OFF systems in studying skeletal muscle physiology.
• To facilitate the integration of these advanced mouse models into skeletal muscle research programs.

Main Methods:

• Description of myofiber- and satellite cell-specific Cre-loxP transgenic mice for gene knockout and cell depletion.
• Explanation of a myofiber-specific Tet-ON system for gene overexpression and myonuclei labeling.
• Guidance on breeding and genotyping these specialized transgenic mouse lines.

Main Results:

• Demonstration of how Cre-loxP systems enable gene knockout in adult skeletal muscle myofibers.
• Illustration of satellite cell depletion using specific Cre-loxP mouse models.
• Showcasing the utility of Tet-ON systems for inducible gene overexpression and myonuclei labeling in myofibers.

Conclusions:

• Inducible transgenic mouse models offer powerful, versatile tools for skeletal muscle research.
• The Cre-loxP and Tet systems provide precise control over gene function studies in skeletal muscle.
• This review equips researchers with the foundational knowledge to implement these models effectively.