TH1834 dihydrochloride is a specific Tip60 (KAT5) histone acetyltransferase inhibitor. TH1834 dihydrochloride induces apoptosis and increases DNA damage in breast cancer. TH1834 dihydrochloride does not affect the activity of related histone acetyltransferase MOF. Anticancer activity. In Vitro TH1834 dihydrochloride (0-500 μM; 1 hour; MCF7 cells) treatment significantly reduces the viability of MCF7 cells. TH1834 dihydrochloride (0-500 μM; 1 hour; MCF7 cells) treatment highly significant increase in cytotoxicity. TH1834 dihydrochloride (500 μM; 1 hour; MCF7 cells) treatment induces caspase 3 activation in MCF7 cells. TH1834 dihydrochloride significantly inhibits Tip60 activity in vitro and treating cells with TH1834 results in apoptosis and increased unrepaired DNA damage in breast cancer. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Cell Viability AssayCell Line: MCF7 cells Concentration: 0 μM, 0.5 μM, 5 μM, 50 μM and 500 μM Incubation Time: 1 hour Result: Significantly reduced the viability of MCF7 cells. Cell Cytotoxicity AssayCell Line: MCF7 cells Concentration: 0 μM, 0.5 μM, 5 μM, 50 μM and 500 μM Incubation Time: 1 hour Result: Highly significant increase in cytotoxicity at all concentrations used. Western Blot AnalysisCell Line: MCF7 cells Concentration: 500 μM Incubation Time: 1 hour Result: Marked caspase 3 activation was observed in MCF7 cells in an independent assay. Form:Solid