Human ribonucleotide reductase M2 subunit gene amplification and transcriptional regulation in a homogeneous staining chromosome region responsible for the mechanism of drug resistance

Abstract excerpt

In our previous publication it was shown that a Gemcitabine-resistant KBGem clone derived from step-wise exposure to Gemcitabine resulted in overexpression of the human Ribonucleotide Reductase M2 subunit (hRRM2) mRNA and protein (Goan et al., 1999). In this study we confirm these results and show that the hRRM2 gene amplification arises in a homogeneous staining region (hsr) derived from chromosome...

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