K-Ras Regulates the Steady-state Expression of Matrix Metalloproteinase 2 in Fibroblasts

Abstract excerpt

Fibroblasts constitutively express matrix metalloproteinase 2 (MMP-2), which specifically cleaves type IV collagen, a major structural component of basement membranes. The level of MMP-2 expression was not altered by serum withdrawal, suggesting that MMP-2 expression is regulated by a series of steady-state conditions that impinge on the MMP-2 promoter. Expression of a dominant-negative Ras protein significantly...

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