Background:

JNJ-26481585 is a novel histone deacetylase (HDAC) inhibitor that exerts a strong potency towards class I HDAC (including HDAC1, HDAC2 and HDAC3), with values of inhibition constant IC₅₀of 0.11, 0.33 and 4.8 nmol/L respectively, leading to strong anti-proliferative activities (IC₅₀ranging from 3.1 to 246 nmol/L) against a broad range of cancer cell lines including lung, breast, colon, prostate, brain and overian cancer cell lines. Recent study results have shown that JNJ-26481585 strongly induce the HDAC1-suppressed p21^waf1,cip1promoter in vivo, histone H3 acetylation in tumor tissue and apoptosis in human colon cancer cell lines (both APC wild-type and mutant) in vitro.

Reference

Arts J, King P, Mari?n A, Floren W, Beli?n A, Janssen L, Pilatte I, Roux B, Decrane L, Gilissen R, Hickson I, Vreys V, Cox E, Bol K, Talloen W, Goris I, Andries L, Du Jardin M, Janicot M, Page M, van Emelen K, Angibaud P. JNJ-26481585, a novel "second-generation" oral histone deacetylase inhibitor, shows broad-spectrum preclinical antitumoral activity. Clin Cancer Res. 2009;15(22):6841-6851