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- W2080968105 abstract "The goal of the present work is to establish a correlation between the degree of histone post-translational modifications and the effects caused by treatment of HT29 colon cancer cells with class I-selective (MS-275 and MC1855), class II-selective (MC1568), and non-selective (suberoylanilide hydroxamic acid (SAHA) histone deacetylase inhibitors (HDACi). This correlation could afford a mean to better understand the mechanism of action of new, more potent, and selective HDACi directly on the cells. To this end, LC coupled to MS was applied in studies of time and concentration-dependent treatment with HDACi in HT29 cells. The results were correlated to their potency of histone deacetylase inhibition and to their effects on the cell cycle. The results indicate that the four tested inhibitors show a different pattern of time- and concentration-dependent modification after treatment of HT29 cells. At the selected concentrations, they cause different histone hyperacetylation and different cell cycle effects. In particular, SAHA (non-selective HDACi) affected hyperacetylation of all histones and caused massive cell death. MC1855 (class I-selective HDACi, hydroxamate) proved to be more potent and less toxic (cell arrest in G2/M phase) than SAHA. MS-275 (class I-selective HDACi, benzamide) exhibited a higher degree of hyperacetylation of H4 and a lower degree of H2A, H2B, and H3 acetylation, causing a cell arrest in G0/G1 phase. On the contrary, MC1568 (class II-selective HDACi) produced only a modest hyperacetylation of H4, was ineffective on the other histones, and showed no effect on cell cycle in HT29 cells." @default.
- W2080968105 created "2016-06-24" @default.
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- W2080968105 date "2009-12-01" @default.
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- W2080968105 title "Histone post-translational modifications by HPLC-ESI-MS after HT29 cell treatment with histone deacetylase inhibitors" @default.
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- W2080968105 doi "https://doi.org/10.1002/pmic.200800866" @default.
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