We observed a significant induction of ovarian cancer cells’ growth, invasion and cisplatin resistance, and established a mechanism of resistin action that included induction of EMT and stemness, as evidenced by down-regulated epithelial marker e-cadherin and up-regulated mesenchymal markers vimentin/ ZEB1 and stemness markers sox2, oct4 and nanog. This evidence concerns the gene POU5F1 and ovarian cancer.