Moreover, when used in combination with paclitaxel, one of the therapeutic options for recurrent ovarian carcinoma, PEP-010 showed a beneficial effect leading to the reduction of the IC50 of paclitaxel of 2.2 times and to apoptosis in 87% of cells. The described results suggest the potential therapeutic interest for PEP-010 and lead to the choice of ovarian adenocarcinoma as one of the major indications of the ongoing clinical trial.
We have compared specific features related to the mechanism-of-action of PEP-010 in sensitive (MDA-MB-231, IGROV1) and not sensitive cell models of different tumor origins and in tissue sections derived from Patient-Derived Xenografts models of breast cancer treated or not with PEP-010. Widely used techniques as immunofluorescent staining and immunohistochemistry were employed, making these results easily transferable in clinical routine.Taken together, our pre-clinical data showed the potential of PEP-010 as an anti-cancer peptide on a wide variety of malignancies and enabled the identification of pharmacodynamic biomarker candidates, important to ease the clinical development.