Immune interferon inhibits collagen synthesis by rheumatoid synovial cells associated wth decreaded levels of the procollagen mRNAs(FEBS 2156)

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Abstract
Recombinant immune interferon, (interferon-gamma, IFN-gamma) inhibits types I and III collagen synthesis by rheumatoid synovial fibroblast-like cells in culture. This decrease is associated with a decrease in the levels of types I and III procollagen mRNAs in these cells as measured by dot blot hybridization. In the control synovial cells the level of alpha 2(I) mRNA is disproportionately high compared with that of alpha 1(I) or alpha 1(III) mRNA, and IFN-gamma suppresses the level of alpha 1(I) and alpha 1(III) mRNA to a greater extent than that of alpha 2(I) mRNA. The lymphokine, IFN-gamma, may thus have a role in the regulation of collagen synthesis in inflammatory joint disease and other conditions.