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Bioorg Med Chem. 2010 Jun 1;18(11):4103-10. doi: 10.1016/j.bmc.2010.03.080. Epub 2010 Apr 3.

On the inhibition of histone deacetylase 8.

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Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556-5670, USA.


Histone deacetylases are key regulators of gene expression and have recently emerged as important therapeutic targets for cancer and a growing number of non-malignant diseases. Many widely studied inhibitors of HDACs such as SAHA are thought to have low selectivity within or between the human HDAC isoform classes. Using an isoform-selective assay, we have shown that a number of the known inhibitors have in fact a low activity against HDAC8. Based on the wealth of structural information available for human HDAC8, we use a combination of docking and molecular dynamics simulations to determine the structural origin of the experimental results. A close relationship is found between the activity and the high surface malleability of HDAC8. These results provide a rationale for the recently described 'linkerless' HDAC8 selective inhibitors and design criteria for HDAC8 selective inhibitors.

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