DEM induces upregulation of GSH(L-c-glutamyl-L-cysteinyl-glycine) metabolism, and the downregulation of pathways of cancer, chemokine signaling, cytokine-cytokine receptor, and focal adhesion in transformed cells. DEM appears to modify microenvironment of transformed cells thereby restraining tumor cell growth. DEM is cytotoxic to the transformed cells in a concentration dependent manner. DEM at 0.25 mM decreases cell viability to 75%. The co-exposure of cells to DEM+GSHe inhibits DEM induced cytotoxicity. DEM exposure increases the ROS generation by multiple orders of magnitude in transformed cells. This is evident from the dose and time dependent increase in fluorescence intensity of CMH2DCFDA. Moreover, DEM activates MAPK pathway and DEM induced activation of ERK is found to be due to phosphorylation at Thr 202/204^[1].