HDAC inhibitor SB939

Definition / meaning of HDAC inhibitor SB939

An orally bioavailable, small-molecule histone deacetylase (HDAC) inhibitor with potential antineoplastic activity. HDAC inhibitor SB939 inhibits HDACs, which may result in the accumulation of highly acetylated histones, followed by the induction of chromatin remodeling; the selective transcription of tumor suppressor genes; the tumor suppressor protein-mediated inhibition of tumor cell division; and, finally, the induction of tumor cell apoptosis. This agent may possess improved metabolic, pharmacokinetic and pharmacological properties compared to other HDAC inhibitors.

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The Web site of the National Cancer Institute (http://www.cancer.gov/)

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