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Abstract
Previous studies have established that the regulation of gene expression is dependent upon the nucleosomal integrity of nuclear DNA. To a large extent, this integrity is dictated by the acetylation status of the core histone particles. The acetylation of histones is, in turn, controlled by the combined activity of specific acetylases and deacetylases. Moreover, disruption of histone acetylases and deacetylases has been linked to a wide variety of human cancers. For this reason, the recent availability of potent and specific histone deacetylase inhibitors has provoked a great deal of interest amongst cancer biologists, oncologists and pharmacologists. Within the past 2 - 3 years, several novel histone deacetylase inhibitors have been reported, many of which have already been tested in vivo in mouse models of cancer. In this review we focus on the rationale behind the use of histone deacetylase inhibitors as anticancer agents. Moreover, we review some of the recent findings pertaining to the use of these compounds as anticancer agents.