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A Macrophage-Tumor Spheroid Co-Invasion Assay
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Macrophage migration and invasion is regulated by MMP10 expression
Megan Y Murray1, Timothy P Birkland, Jonathan D Howe
1School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, Norfolk, United Kingdom.
Plos One
|May 22, 2013
Summary
Matrix metalloproteinase 10 (MMP10) promotes macrophage migration and invasion. Silencing MMP10 reduced cell movement, while adding MMP10 protein restored it, highlighting its role in immune cell function.
Area of Science:
- Immunology
- Cell Biology
- Biochemistry
Background:
- Macrophage migration is crucial for immune responses.
- Metalloproteinases are implicated in cell motility.
- Matrix metalloproteinase 10 (MMP10) role in macrophage migration is unknown.
Purpose of the Study:
- To investigate the role of MMP10 in macrophage migration and invasion.
- To test the hypothesis that MMP10 facilitates macrophage movement.
Main Methods:
- Profiling MMP expression in LPS-stimulated macrophages.
- Using RNA interference (RNAi) to silence MMP10.
- Employing time-lapse microscopy to assess macrophage migration.
- Analyzing invasion through Matrigel and fibronectin matrices.
- Comparing wild-type and Mmp10 knockout (Mmp10-/-) macrophages.
Main Results:
- MMP10 expression was early-stimulated and later down-regulated in LPS-treated macrophages.
- RNAi silencing of MMP10 significantly reduced primary macrophage migration.
- Exogenous active MMP10 protein restored migration in silenced cells.
- Mmp10-/- macrophages showed significantly reduced migration and invasion capabilities on fibronectin and Matrigel.
Conclusions:
- MMP10 is a key facilitator of macrophage migration and invasion.
- MMP10 expression modulates macrophage movement.
- Findings suggest MMP10's involvement in pathologies with altered macrophage activity, such as abnormal wound healing.
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