Epigenetic regulation in muscle-invasive urothelial carcinoma of the bladder in the dog, a translational model of human cancer.

Muscle-invasive urothelial carcinoma (MIUC) is the most common type of bladder malignancy in dogs, but the treatments used in the clinic are relatively ineffective for most of them. Dogs represent a naturally- occurring model for human MIUC and the advances in veterinary oncology could benefit human oncology as well. The field of epigenetics presents unique opportunities for new cancer therapeutics or biomarkers, as epigenetic modification of key genes can regulate tumor initiation and progression. This review summarizes the existing literature on epigenetic changes in canine MIUC as compared to human MIUC and provides suggestions for future studies that could benefit both human and canine patients.