Trichostatin A (TSA), an inhibitor of histone deacetylase (HDAC), is widely used to study the role of histone acetylation in gene expression, since genes that use histone acetylation as a means of regulating expression may be up regulated when TSA is added. In this study, however, we show that TSA has an unexpected paradoxical effect leading to inhibition of NF-Y-associated histone acetyl transferase (HAT) activity and phosphorylation of the HAT, hGCN5. TSA treatment of cells resulted in dimi...Expand abstract
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Paradoxical effects of trichostatin A: inhibition of NF-Y-associated histone acetyltransferase activity, phosphorylation of hGCN5 and downregulation of cyclin A and B1 mRNA.
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