Methylsulfonylmethane Induces Cell Cycle Arrest and Apoptosis, and Suppresses the Sternness Potential of HT-29 Cells

Background/Aim: Colorectal cancer is one of the most common malignancies worldwide. Small moleculebased chemotherapy is an attractive approach for the chemoprevention and treatment of colorectal cancer. Methylsulfonylmethane (MSM) is a natural organosulfur compound with anticancer properties, as revealed by studies on in vitro models of gingival, prostate, lung, hepatic, and breast cancer. However, the molecular mechanisms underlying the effects of MSM in colon cancer cells remain unclear. Materials and Methods: Here, we investigated the effects of MSM, especially on the cell cycle arrest and apoptosis, in HT-29 cells. Results: MSM suppressed the viability of HT-29 cells by inducing apoptosis and cell cycle arrest at the Go/G I phase. MSM suppressed the sphere-forming ability and expression of stemness markers in HT-29 cells. Conclusion: MSM has anti-cancer effects on HT-29 cells, and induces cell cycle arrest and apoptosis, while suppressing the stemness potential.