Functional Differences in Epigenetic ModulatorsSuperiority of Mercaptoacetamide-Based Histone Deacetylase Inhibitors Relative to Hydroxamates in Cortical Neuron Neuroprotection Studies
摘要:
We compare the ability of two structurally different classes of epigenetic modulators, namely, histone deacetylase (HDAC) inhibitors containing either a hydroxamate or a mercaptoacetamide as the zinc binding group, to protect cortical neurons in culture from oxidative stress-induced death. This study reveals that some of the mercaptoacetamide-based HDAC inhibitors are fully protective, whereas the hydroxamates show toxicity at higher concentrations. Our present results appear to be consistent with the possibility that the mercaptoacetamide-based HDAC inhibitors interact with a different subset of the HDAC isozymes [less activity at HDAC1 and 2 correlates with less inhibitor toxicity], or alternatively, are interacting selectively with only the cytoplasmic HDACs that are crucial for protection from oxidative stress.
Histone Deacetylase Inhibitors and Methods of Use Thereof
申请人:Kozikowski Alan P.
公开号:US20110098504A1
公开(公告)日:2011-04-28
The invention provides novel classes of HDAC inhibitors. Methods of sensitizing a cancer cell to the cytotoxic effects of radiotherapy are also provided as well as methods for treating cancer and methods for treating neurological diseases. Additionally, the invention further provides pharmaceutical compositions comprising an HDAC inhibitor of the invention, and kits comprising a container containing an HDAC inhibitor of the invention.