Modeling the cholesteatoma microenvironment: coculture of HaCaT keratinocytes with WS1 fibroblasts induces MMP-2 activation, invasive phenotype, and proteolysis of the extracellular matrix.

Abstract excerpt

BACKGROUND: Increased keratinocyte proliferation, increased keratinocyte migration, elaboration of proteases resulting in proteolysis of the extracellular matrix (ECM), and destruction of surrounding tissues all typify the course of cholesteatoma growth. The contribution of stromal fibroblasts to these behaviors remains relatively unexplored. OBJECTIVES: Our objective for the current studies was to create a...

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