EPSIN 3, a novel p53 target, regulates the apoptotic pathway and gastric carcinogenesis

BACKGROUND & AIM: p53 activation by cellular stresses induces the transcription of hundreds of its target genes. To elucidate the entire picture of its downstream pathway, we screened a cDNA microarray dataset of adriamycin-treated HCT116 p53−/− or p53+/+ cells and identified EPSIN 3 as a novel p53 target. METHODS: Potential p53 binding sequences in the EPSIN 3 locus were evaluated by reporter and CHIP assays. To investigate the role of EPSIN 3 in the p53 downstream pathway, we assessed DNA damage-induced apoptosis in EPSIN 3-knockdown HCT116 cells or Epsin 3-deficient mice.

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