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Methods for Observing and Quantifying Muscle Satellite Cell Motility and Invasion In Vitro
Dane K Lund1,2, Patrick McAnulty1,3, Ashley L Siegel1,4
1Division of Biological Sciences and Christopher S. Bond Life Sciences Center, University of Missouri, 1201 Rollins Street, Columbia, MO, 65211 7310, USA.
Methods in Molecular Biology (Clifton, N.J.)
|March 2, 2017
Summary
Satellite cell motility is crucial for muscle regeneration and understanding factors influencing it is key. This study presents novel timelapse microscopy protocols to quantitatively analyze satellite cell movement in various complex environments.
Area of Science:
- Muscle stem cell biology
- Cellular dynamics
- Regenerative medicine
Background:
- Satellite cell motility and chemotaxis are vital for muscle regeneration, especially with cell engraftment.
- Understanding factors influencing satellite cell movement is critical for improving regenerative therapies.
- Satellite cell invasion through the extracellular matrix (ECM) is essential for in vivo relocation.
Purpose of the Study:
- To develop and present quantitative protocols for analyzing satellite cell motility and invasion.
- To investigate cell-autonomous and environmental factors affecting satellite cell behavior.
- To overcome challenges in quantitatively assessing satellite cell migration in vitro.
Main Methods:
- Utilized timelapse microscopy for longitudinal evaluation of individual satellite cells.
- Developed three distinct protocols for quantitative motility analysis.
- Assessed cell behavior in 2D on purified ECM substrates and 3D on living myofibers and artificial matrices.
Main Results:
- Established robust methods for quantifying satellite cell motility and invasion dynamics.
- Enabled detailed observation and analysis of cellular activities over time.
- Provided a framework for dissecting factors influencing satellite cell migration.
Conclusions:
- Timelapse microscopy offers a powerful approach to quantitatively analyze satellite cell motility.
- The presented protocols facilitate a deeper understanding of satellite cell behavior in diverse microenvironments.
- This work lays the foundation for optimizing satellite cell-based muscle regeneration strategies.
