Matrix Metalloproteinases and Melanoma Progression
Author Information
Author(s): Hofmann U B, Westphal J R, Waas E T, Zendman A J W, Cornelissen I M H A, Ruiter D J, Muijen G N P van
Primary Institution: University Hospital, Nijmegen, The Netherlands
Hypothesis
Increased expression of activated matrix metalloproteinase-2 (MMP-2) correlates with melanoma progression.
Conclusion
The study found that only the expression of activated MMP-2 is associated with increased malignancy in melanoma.
Supporting Evidence
- MMP-1 mRNA was detectable in all cell lines, but protein expression was too low to be detected.
- MMP-2 mRNA and protein were present in all cell lines, with the highest levels in the most metastatic lines.
- MMP-3 was expressed in some cell lines, but protein was only found in the most metastatic ones.
- No MMP-9 was expressed in any melanoma cell lines.
- TIMP-1 and TIMP-2 were present in all cell lines, but their expression did not correlate with metastatic capacity.
Takeaway
This study looked at how certain proteins are related to melanoma growth, and found that one protein, MMP-2, is really important for how bad the melanoma can get.
Methodology
The study used in vitro and in vivo models to analyze the expression of various matrix metalloproteinases and their inhibitors in melanoma cell lines and xenografts.
Digital Object Identifier (DOI)
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