Mass Spectrometry-Based Proteomic Technology and Its Application to Study Skeletal Muscle Cell Biology

Area of Science:

• Muscle physiology and cell biology
• Proteomics and mass spectrometry
• Systems biology approaches

Background:

• Skeletal muscle proteome is dynamic, adapting to physiological changes and disease.
• Muscle tissue's significant body mass impacts overall physiology.
• Proteomic alterations are linked to myogenesis, exercise, aging, and neuromuscular disorders.

Purpose of the Study:

• To review bioanalytical methods for skeletal muscle proteomic characterization.
• To highlight advancements in understanding muscle protein diversity and myofiber heterogeneity.
• To emphasize the integration of proteomic data with other omics for systems biology.

Main Methods:

• Top-down proteomics for intact proteoforms and post-translational modifications.
• Bottom-up proteomics for large-scale protein detection in complex mixtures.
• Subproteomics for analyzing distinct subcellular fractions.

Main Results:

• Mass spectrometry has significantly advanced the understanding of skeletal muscle protein diversity.
• Detailed proteomic knowledge reveals myofiber heterogeneity.
• Established methods allow for comprehensive characterization of the muscle proteome.

Conclusions:

• Proteomic characterization provides critical insights into skeletal muscle function and dysfunction.
• Advanced analytical techniques have improved our understanding of muscle biology.
• Integrating proteomic data with other omics enables a systems biology view of skeletal muscle.