Protective Effect of Sulforaphane On Indomethacin
Protective Effect of Sulforaphane On Indomethacin Protective effect of sulforaphane on indomethacin-induced cytotoxicity via heme oxygenase-1 expression in human intestinal Int 407 cells. Mol Nutr Food Res. 2009 Sep;53(9):1166-76. Yeh CT, Chiu HF, Yen GC. National Institute of Cancer Research, National Health Research Institutes, Miaoli County, Taiwan. Sulforaphane is known to be an indirect antioxidant that acts by inducing NF-E2-related factor 2 (Nrf2)-dependent phase II enzymes. In the present study, we investigated the effect of sulforaphane on the expression of heme oxygenase-1 (HO-1) in human intestinal Int 407 cells. RT-PCR and Western blot data revealed that sulforaphane induced an increase in HO-1 expression at the mRNA and protein levels, respectively. This induction was also marked by an increase in HO-1 activity. Actinomycin D (an RNA synthesis inhibitor) and cycloheximide (a protein synthesis inhibitor) inhibited sulforaphane-responsive HO-1 mRNA expression, indicating that sulforaphane is a requirement for transcription and de novo protein synthesis. Moreover, sulforaphane increased the nuclear levels of Nrf2 and increased the binding activity of nuclear proteins to the antioxidant