MAPK8 and malignant colon neoplasm: Our results showed that HCT-116 colon cancer cells without MSM treatment did not exhibit detectable amounts of p-JNK protein and MSM treatment induced the phosphorylation of JNK protein at 200–800 mM concentrations, dose-dependently (p < 0.05), in both HCT-116 p53 +/+ and −/− cells.