PSMC6 and ovarian carcinoma: We therefore explored the expression levels of PSMC6 in a large panel of ovarian carcinoma cell lines representative of different histological subtypes, including A2780, TOV21G, TOV112D, ES-2, OVCAR-3, OVCAR-4, OVCAR-5, OVCAR-8, PEO1, CAOV3, SKOV-3 as well as some resistant variants (A2780/CP, OVCAR-5/Pt, PEO4, TOV21G/Pt) by qRT-PCR and by western blotting.