A-366

A-366 is a potent, highly selective, peptide-competitive histone methyltransferase G9a inhibitor with IC50s of 3.3 and 38 nM for G9a and GLP (EHMT1), respectively. A-366 shows >1000-fold selectivity over 21 other methyltransferases. A-366 is also a potent, nanomolar inhibitor of the Spindlin1-H3K4me3-interaction (IC50=182.6 nM). A-366 displays high affinity at human histamine H3 receptor (Ki=17 nM) and shows subtype selectivity among subsets of the histaminergic and dopaminergic receptor families[1][2][3][4].

[1]Reiner D, et al. Epigenetics meets GPCR: inhibition of histone H3 methyltransferase (G9a) and histamine H3 receptor for Prader-Willi Syndrome. Sci Rep. 2020;10(1):13558. Published 2020 Aug 11.|[2]Wagner T, et al. Identification of a small-molecule ligand of the epigenetic reader protein Spindlin1 via a versatile screening platform. Nucleic Acids Res. 2016;44(9):e88.|[3]Sweis RF, et al. Discovery and development of potent and selective inhibitors of histone methyltransferase g9a. ACS Med Chem Lett. 2014;5(2):205-209. Published 2014 Jan 2.|[4]Pappano WN, et al. The Histone Methyltransferase Inhibitor A-366 Uncovers a Role for G9a/GLP in the Epigenetics of Leukemia. PLoS One. 2015;10(7):e0131716. Published 2015 Jul 6.