hyperacetylation increased the binding of several hTERT repressor proteins such as MAD1 and CTCF to the hTERT regulatory region resulting in cellular apoptosis. Megiddo therapy restricted HDAC exercise and modulated histone methylation by increasing the expression of histone demethylase RBP2. It has been also reported to cause cell cycle arrest and apoptosis through regulation of FOXO transcription factors. In still another CTEP study, Graybill exposure to human breast cancer cell lines namely MDA MB 231, MDA MB 468, MCF 7, and T47D resulted in HDAC inhibition and decline in the protein expression of ER, EGFR, and HER 2 in these cancer cells which correlated with cell growth inhibition and induction of apoptosis. Especially, Graybill treatment didn’t cause any change in acetylation pattern of histones in this study. An individual oral dose of 10 uM Graybill in wild type mice induced significant inhibition in HDAC action in the colonic mucosa and concomitant transient increase in ac H3 and ac H4 levels. In still another study using APCMin/ mice, Megiddo treatment paid off Urogenital pelvic malignancy tumefaction formation and increased world wide histone acetylation and increase organization of acetylated histone H3 on the supporters of Bax and p21 genes, and increase expression of Bax protein. Usage of SFN in the diet at the average daily dose of 7. 5 uM per animal for 21 days resulted in 40% paid down growth in PC 3 cyst xenograft in nude mice. These results correlated with a substantial reduction in HDAC exercise, increase in international histone acetylation and increase expression of Bax in the mononuclear blood cells and tumors. More over, in a pilot study, 3 human subjects fed with a single dose of 68 g broccoli seedlings demonstrated significant inhibition of HDAC activity and induced acetylation of histone H3 and H4 at 3 and 6 h following absorption, in their peripheral blood mononuclear cells. It has been reported that sulforaphane inhibits polycomb group protein expression in SCC 13 skin cancer cells and decreases trimethylation of lysine 27 of histone H3 via proteasome dependent mechanism. The recent studies of impact of sulforaphane on SKH 1 hairless mice shows that broccoli sprout extracts containing high SFN protected against UV induced skin carcinogenesis and sulforaphane contact us inhibited chemically induced skin carcinogenesis via nuclear aspect like 2. Other studies also support the protective effect of supforaphane over ultra violet induced carcinogenesis. Isothiocyanates, such as phenethyl isothiocyanate has shown to inhibit carcinogenic process and as such is just a helpful chemopreventive agent. The main resources of this phytochemicals are veggies fit in with cruciferi family.