Characterisation of the cell type-specificity of collagenase 3 mRNA expression in comparison with membrane type 1 matrix metal loproteinase and gelatinase A in the synovial membrane in rheumatoid arthritis

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Item Type:	Article
Title:	Characterisation of the cell type-specificity of collagenase 3 mRNA expression in comparison with membrane type 1 matrix metal loproteinase and gelatinase A in the synovial membrane in rheumatoid arthritis
Creators Name:	Petrow, P.K., Wernicke, D., Schulze-Westhoff, C., Hummel, K.M., Brauer, R., Kriegsmann, J., Gromnica-Ihle, E., Gay, R.E. and Gay, S.
Abstract:	Objective: To study the pattern and cell type-specificity of collagenase 3, membrane-type 1 matrix metalloproteinase (MT1-MMP), and gelatinase A mRNA expression in the synovial membrane in rheumatoid arthritis (RA). Methods: The mRNA expression of collagenase 3, MT1-MMP, and gelatinase A was characterised by northern blot analysis, reverse transcriptase-polymerase chain reaction, and in situ hybridisation. In situ hybridisation was performed in combination with the immunohistochemical detection of cell type-specific antigens. Results: Synovial membrane specimens from 19 of 21 patients with RA expressing collagenase 3 mRNA were positive for MT1-MMP and gelatinase A mRNA. In control samples from patients without destructive inflammatory joint diseases collagenase 3 mRNA was not expressed and only in two of seven cases was a coexpression of MT1-MMP and gelatinase A mRNA detected. Fibroblast-like cells of the synovial membrane were found to be the predominant source of collagenase 3, MT1-MMP, and gelatinase A mRNA expression in lining and sublining layers as well as at the synovial membrane-cartilage interface. Additionally, the expression of MT1-MMP mRNA was detected in endothelial cells. Collagenase 3 mRNA expression was found in about 5% of CD68 positive macrophages. Conclusions: Collagenase 3 mRNA is expressed simultaneously with MT1-MMP and gelatinase A mRNA in fibroblast-like cells of the synovial membrane in RA. These results suggest (a) a broad extracellular proteolytic potential of fibroblast-like cells and (b) an important role of cell surface associated procollagenase 3 activation by MT1-MMP and gelatinase A for cartilage degradation by invading fibroblast-like cells.
Keywords:	Collagenases, In Situ Hybridization, Matrix Metalloproteinase 13, Matrix Metalloproteinase 2, Membrane-Associated Matrix Metalloproteinases, Messenger RNA, Metalloendopeptidases, Northern Blotting, Rheumatoid Arthritis, Reverse Transcriptase Polymerase Chain Reaction, Synovial Membrane
Source:	Annals of the Rheumatic Diseases
ISSN:	0003-4967
Publisher:	British Medical Journal Publishing Group
Volume:	61
Number:	5
Page Range:	391-397
Date:	May 2002
Official Publication:	https://doi.org/10.1136/ard.61.5.391
PubMed:	View item in PubMed

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