Oncogenic RAS mutations in myeloma cells selectively induce cox-2 expression, which participates in enhanced adhesion to fibronectin and chemoresistance.

Abstract excerpt

Oncogenic RAS expression occurs in up to 40% of multiple myeloma (MM) cases and correlates with aggressive disease. Since activated RAS induces cyclooxygenase-2 (cox-2) expression in other tumor models, we tested a role for cox-2 in mutant RAS-containing MM cells. We used the ANBL-6 isogenic MM cell lines in which the IL-6-dependent parental line becomes cytokine independent following transfection with mutated...

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