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  • Title: RRM2 induces NF-kappaB-dependent MMP-9 activation and enhances cellular invasiveness.
    Author: Duxbury MS, Whang EE.
    Journal: Biochem Biophys Res Commun; 2007 Mar 02; 354(1):190-6. PubMed ID: 17222798.
    Abstract:
    Ribonucleotide reductase is a dimeric enzyme that catalyzes conversion of ribonucleotide 5'-diphosphates to their 2'-deoxynucleotide forms, a rate-limiting step in the production of 2'-deoxyribonucleoside 5'-triphosphates required for DNA synthesis. The ribonucleotide reductase M2 subunit (RRM2) is a determinant of malignant cellular behavior in a range of human cancers. We examined the effect of RRM2 overexpression on pancreatic adenocarcinoma cellular invasiveness and nuclear factor-kappaB (NF-kappaB) transcription factor activity. RRM2 overexpression increases pancreatic adenocarcinoma cellular invasiveness and MMP-9 expression in a NF-kappaB-dependent manner. RNA interference (RNAi)-mediated silencing of RRM2 expression attenuates cellular invasiveness and NF-kappaB activity. NF-kappaB is a key mediator of the invasive phenotypic changes induced by RRM2 overexpression.
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