Acyl derivatives of p-aminosulfonamides and dapsone as new inhibitors of the arginine methyltransferase hPRMT1.

Abstract

Arginine methylation is an epigenetic modification that receives increasing interest as it plays an important role in several diseases. This is especially true for hormone-dependent cancer, seeing that histone methylation by arginine methyltransferase I (PRMT1) is involved in the activation of sexual hormone receptors. Therefore, PRMT inhibitors are potential drugs and interesting tools for cell biology. A dapsone derivative called allantodapsone previously identified by our group served as a lead structure for inhibitor synthesis. Acylated derivatives of p-aminobenzenesulfonamides and the antilepra drug dapsone were identified as new inhibitors of PRMT1 by in vitro testing. The bis-chloroacetyl amide of dapsone selectively inhibited human PRMT1 in the low micromolar region and was selective for PRMT1 as compared to the arginine methyltransferase CARM1 and the lysine methyltransferase Set7/9. It showed anticancer activity on MCF7a and LNCaP cells and blocked androgen dependent transcription specifically in a reporter gene system. Likewise, a transcriptional block was also demonstrated in LNCaP cells using quantitative RT-PCR on the mRNA of androgen dependent genes.

• Authors: Elisabeth-Maria Bissinger, Ralf Heinke, Astrid Spannhoff, Adrien Eberlin, Eric Metzger, Vincent Cura, Pierre Hassenboehler, Jean Cavarelli, Roland Schüle, Mark T Bedford, Wolfgang Sippl, Manfred Jung
• Journal: Bioorganic & medicinal chemistry (Bioorg Med Chem) Vol. 19 Issue 12 Pg. 3717-31 (Jun 15 2011) ISSN: 1464-3391 [Electronic] England
• PMID: 21440447 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2011 Elsevier Ltd. All rights reserved.

Chemical References

• Antineoplastic Agents
• Enzyme Inhibitors
• Intracellular Signaling Peptides and Proteins
• Receptors, Androgen
• Sulfonamides
• Dapsone
• Methyltransferases
• PRMT2 protein, human
• Protein-Arginine N-Methyltransferases

Topics

• Acylation (drug effects)
• Antineoplastic Agents (chemical synthesis, chemistry, pharmacology)
• Cell Line, Tumor
• Dapsone (chemical synthesis, chemistry, pharmacology)
• Enzyme Inhibitors (chemical synthesis, chemistry, pharmacology)
• Gene Expression Regulation, Neoplastic (drug effects)
• Humans
• Inhibitory Concentration 50
• Intracellular Signaling Peptides and Proteins
• Methyltransferases (antagonists & inhibitors)
• Models, Molecular
• Molecular Structure
• Protein-Arginine N-Methyltransferases
• Receptors, Androgen (genetics)
• Sulfonamides (chemical synthesis, chemistry, pharmacology)