TRPV1 and prostate carcinoma: On the other hand, studies by Pecze et al. (62) showed that despite the presence of the TRPV1 protein expression in the breast (MCF7, MDA-MB-231, BT-474) and prostate carcinoma (PC-3, Du 145, LNCaP) cell lines, capsaicin administration at 50 μM dose did not exhibit any cytotoxic effect.