CASP1 and prostate cancer: We found that the advanced stage prostate cancer PC3 cells, exhibit comparable NLRP3 protein expression level but higher pro-IL-1β and active P-20 fragment of caspase-1 (Figure 1A–C), paralleled by doubled IL-1β secretion level after 48 h of culture (Figure 1D) compared to the androgen-sensitive LNCaP cells.