A A schematic diagram shows the animal experimental design for the crossing of Hi-Myc mice and OTUD6A null mice. B Depletion of Otud6a reduced the prostatic tumorigenesis of Hi-Myc PrCa mice. The prostate tumors/tissues were collected and weighed at 7-month of age. N = 7, 7, 5, and 6 for Otud6a+/y, Otud6a−/y, Hi-Myc;Otud6a+/y and Hi-Myc;Otud6a−/y group, respectively. ***p < 0.001. One-way ANOVA. C Representative images for the prostate tissue or tumor in Otud6a+/y, Otud6a−/y, Hi-Myc;Otud6a+/y and Hi-Myc;Otud6a−/y mice. D Depletion of Otud6a reduced the tumor weight in the different lobes of prostate in Hi-Myc mice. The DLP (dorsolateral prostate), VP (ventral prostate) and AP (anterior prostate) lobes of prostate tissue were collected and weighed for each mice at 7-month of age. N = 5 and 6 for Hi-Myc;Otud6a+/y and Hi-Myc;Otud6a−/y group, respectively. *p < 0.05, **p < 0.001. One-way ANOVA. E Representative images for the different lobes of prostate tumor in Hi-Myc;Otud6a+/y and Hi-Myc;Otud6a−/y mice. F Representative H&E staining images for the different lobes of prostate tumor in Hi-Myc;Otud6a+/y and Hi-Myc;Otud6a−/y mice at 7-month and 12-month of age. G Representative IHC staining images of c-Myc for the DLP lobe of prostate tumor in Hi-Myc;Otud6a+/y and Hi-Myc;Otud6a−/y mice.