Collagenase specificity in chondrosarcoma metastasis.

Published

Journal Article

The treatment of some mesenchymal malignancies has made significant gains over the past few decades with the development of effective systemic therapies. In contrast, the treatment of chondrosarcoma has been limited to surgical resection, with the most significant prognostic indicators being surgical margins and histologic grade. We have reported that MMP-1/TIMP-1 gene expression serves to prognosticate for tumor recurrence in this group of patients. This led to the hypothesis that collagenase activity facilitates cell egression from the cartilaginous matrix. In the current study we examine the specificity of collagenase gene expression in archival human chondrosarcoma samples using semi-quantitative PCR. Messenger RNA was affinity extracted and subject to reverse transcription. The subsequent cDNA was amplified using novel primers and quantitated by densitometry. Ratios of gene expression were constructed and compared to disease-free survival. The data demonstrate that the significance of the MMP-1/TIMP-1 ratio as a predictor of recurrence is confirmed with a larger number of patients. Neutrophil collagenase or MMP-8 was observed in only 5 of 29 samples. Collagenase-3 or MMP-13 was observed in all samples but the level did not correlate with disease-free survival. Since the collagenases have similar activity for fibrillar collagens and cleave the peptide in the same location, post-transcriptional regulatory mechanisms may account for the observed specificity. The determination of the MMP-1/TIMP-1 gene expression ratio not only serves to identify those patients at risk for recurrence but may also serve as a novel therapeutic avenue as an adjunct to surgical resection.

Full Text

Duke Authors

Cited Authors

  • Scully, SP; Berend, KR; Qi, WN; Harrelson, JM

Published Date

  • July 1999

Published In

Volume / Issue

  • 32 / 7

Start / End Page

  • 885 - 889

PubMed ID

  • 10454748

Pubmed Central ID

  • 10454748

International Standard Serial Number (ISSN)

  • 0100-879X

Digital Object Identifier (DOI)

  • 10.1590/s0100-879x1999000700013

Language

  • eng

Conference Location

  • Brazil