After 6 weeks of low-fat diet (LFD) or high-fat diet (HFD), mice had splenic injection of MC38 colorectal cancer (CRC) cells and continued on LFD or HFD for 2 additional weeks. (A) The mRNA expression of inflammasome components (IL-1β, caspase-1, ASC, NLRP3, NLRC4) in tumors was examined by quantitative real-time PCR. n=6, each group. Data are shown as mean ± SEM per group. (B,C) Western blot analyses for IL-1β and caspase-1. Representative images are shown. The quantifications were analyzed by Image J. n=5, each group. Data are shown as mean ± SEM per group.