(Bis)urea and (Bis)thiourea Inhibitors of Lysine-Specific Demethylase 1 as Epigenetic Modulators
摘要:
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 overexpression is thought to contribute to the development of cancer. We recently reported a series of (bis)guanidines and (bis)biguanides that 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 isosteric ureas and thioureas that are also potent inhibitors of LSD1. These compounds induce increases 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 and.transcription factor GATA4. These compounds represent an important new series of epigenetic modulators with the potential for use as antitumor agents.
[EN] (BIS) UREA AND (BIS) THIOUREA COMPOUNDS AS EPIGENIC MODULATORS OF LYSINE-SPECIFIC DEMETHYLASE 1 AND METHODS OF TREATING DISORDERS [FR] COMPOSÉS (BIS)URÉE ET (BIS)THIOURÉE EN TANT QUE MODULATEURS ÉPIGÉNIQUES DE LA DÉMÉTHYLASE 1 SPÉCIFIQUE À LA LYSINE ET MÉTHODES DE TRAITEMENT DE TROUBLES
Discovery of Novel Alkylated (bis)Urea and (bis)Thiourea Polyamine Analogues with Potent Antimalarial Activities
作者:Bianca K. Verlinden、Jandeli Niemand、Janette Snyman、Shiv K. Sharma、Ross J. Beattie、Patrick M. Woster、Lyn-Marie Birkholtz
DOI:10.1021/jm200463z
日期:2011.10.13
A series of alkylated (bis)urea and (bis)thiourea polyamineanalogues were synthesized and screened for antimalarial activity against chloroquine-sensitive and -resistant strains of Plasmodium falciparum in vitro. All analogues showed growth inhibitory activity against P. falciparum at less than 3 μM, with the majority having effective IC50 values in the 100–650 nM range. Analogues arrested parasitic
(BIS)UREA AND (BIS)THIOREA COMPOUNDS AS EIPGENIC MODULATORS OF LYSINE-SPECIFIC DEMETHYLASE 1 AND METHODS OF TREATING DISORDERS
申请人:Casero Robert A.
公开号:US20120322877A1
公开(公告)日:2012-12-20
The invention provides for novel (bis)urea and (bis)thiourea compounds which are inhibitors of lysine-specific demethylase 1 (LSD1). Such compounds may be used to treat disorders, including cancer.
Interrogating alkyl and arylalkylpolyamino (bis)urea and (bis)thiourea isosteres as potent antimalarial chemotypes against multiple lifecycle forms of Plasmodium falciparum parasites
作者:Bianca K. Verlinden、Marna de Beer、Boobalan Pachaiyappan、Ethan Besaans、Warren A. Andayi、Janette Reader、Jandeli Niemand、Riette van Biljon、Kiplin Guy、Timothy Egan、Patrick M. Woster、Lyn-Marie Birkholtz
DOI:10.1016/j.bmc.2015.01.036
日期:2015.8
A new series of potent potent aryl/alkylated (bis)urea- and (bis) thiourea polyamine analogues were synthesized and evaluated in vitro for their antiplasmodial activity. Altering the carbon backbone and terminal substituents increased the potency of analogues in the compound library 3-fold, with the most active compounds, 15 and 16, showing half-maximal inhibitory concentrations (IC50 values) of 28 and 30 nM, respectively, against various Plasmodium falciparum parasite strains without any cross-resistance. In vitro evaluation of the cytotoxicity of these analogues revealed marked selectivity towards targeting malaria parasites compared to mammalian HepG2 cells (>5000-fold lower IC50 against the parasite). Preliminary biological evaluation of the polyamine analogue antiplasmodial phenotype revealed that (bis) urea compounds target parasite asexual proliferation, whereas (bis) thiourea compounds of the same series have the unique ability to block transmissible gametocyte forms of the parasite, indicating pluripharmacology against proliferative and non-proliferative forms of the parasite. In this manuscript, we describe these results and postulate a refined structure-activity relationship (SAR) model for antiplasmodial polyamine analogues. The terminally aryl/alkylated (bis) urea-and (bis) thiourea-polyamine analogues featuring a 3-5-3 or 3-6-3 carbon backbone represent a structurally novel and distinct class of potential antiplasmodials with activities in the low nanomolar range, and high selectivity against various lifecycle forms of P. falciparum parasites. (C) 2015 Elsevier Ltd. All rights reserved.
(BIS) UREA AND (BIS) THIOUREA COMPOUNDS AS EPIGENIC MODULATORS OF LYSINE-SPECIFIC DEMETHYLASE 1 AND METHODS OF TREATING DISORDERS