Low molecular weight amidoximes that act as potent inhibitors of lysine-specific demethylase 1

Stuart Hazeldine, Boobalan Pachaiyappan, Nora Steinbergs, Shannon Nowotarski, Allison S. Hanson, Robert A. Casero, Patrick M. Woster

Research output: Contribution to journalArticle

Abstract

The recently discovered enzyme lysine-specific demethylase 1 (LSD1) plays an important role in the epigenetic control of gene expression, and aberrant gene silencing secondary to LSD1 dysregulation is thought to contribute to the development of cancer. We reported that (bis)guanidines, (bis)biguanides, and their urea- and thiourea isosteres are potent inhibitors of LSD1 and induce the re-expression of aberrantly silenced tumor suppressor genes in tumor cells in vitro. We now report a series of small molecule amidoximes that are moderate inhibitors of recombinant LSD1 but that produce dramatic changes in methylation at the histone 3 lysine 4 (H3K4) chromatin mark, a specific target of LSD1, in Calu-6 lung carcinoma cells. In addition, these analogues increase cellular levels of secreted frizzle-related protein (SFRP) 2, H-cadherin (HCAD), and the transcription factor GATA4. These compounds represent leads for an important new series of drug-like epigenetic modulators with the potential for use as antitumor agents.

Original languageEnglish (US)
Pages (from-to)7378-7391
Number of pages14
JournalJournal of medicinal chemistry
Volume55
Issue number17
DOIs
StatePublished - Sep 13 2012

ASJC Scopus subject areas

  • Molecular Medicine
  • Drug Discovery

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    Hazeldine, S., Pachaiyappan, B., Steinbergs, N., Nowotarski, S., Hanson, A. S., Casero, R. A., & Woster, P. M. (2012). Low molecular weight amidoximes that act as potent inhibitors of lysine-specific demethylase 1. Journal of medicinal chemistry, 55(17), 7378-7391. https://doi.org/10.1021/jm3002845