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  • Genetic variation at the 8q...
    Grampp, Steffen; Platt, James L; Lauer, Victoria; Salama, Rafik; Kranz, Franziska; Neumann, Viviana K; Wach, Sven; Stöhr, Christine; Hartmann, Arndt; Eckardt, Kai-Uwe; Ratcliffe, Peter J; Mole, David R; Schödel, Johannes

    Nature communications, 10/2016, Letnik: 7, Številka: 1
    Journal Article

    Clear cell renal cell carcinoma (ccRCC) is characterized by loss of function of the von Hippel-Lindau tumour suppressor (VHL) and unrestrained activation of hypoxia-inducible transcription factors (HIFs). Genetic and epigenetic determinants have an impact on HIF pathways. A recent genome-wide association study on renal cancer susceptibility identified single-nucleotide polymorphisms (SNPs) in an intergenic region located between the oncogenes MYC and PVT1. Here using assays of chromatin conformation, allele-specific chromatin immunoprecipitation and genome editing, we show that HIF binding to this regulatory element is necessary to trans-activate MYC and PVT1 expression specifically in cells of renal tubular origins. Moreover, we demonstrate that the risk-associated polymorphisms increase chromatin accessibility and activity as well as HIF binding to the enhancer. These findings provide further evidence that genetic variation at HIF-binding sites modulates the oncogenic transcriptional output of the VHL-HIF axis and provide a functional explanation for the disease-associated effects of SNPs in ccRCC.