New Insights into the Epigenetic Activities of Natural Compounds

Abstract : Histone deacetylases (HDACs) are a family of enzymes found in bacteria, fungi, plants, and animals that profoundly affect cellular function by catalyzing the removal of acetyl groups from -N-acetylated lysine residues of various protein substrates including histones, transcription factors, alpha-tubulin, and nuclear importers. Although the precise roles of HDAC isoforms in cellular function are not yet completely understood, inhibition of HDAC activity has emerged as a promising approach for reversing the aberrant epigenetic states associated with cancer and other chronic diseases. Potent new isoform-selective HDAC inhibitors would therefore help expand our understanding of the HDAC enzymes and represent attractive lead compounds for drug design, especially if combined with high-resolution structural analyses of such inhibitors to shed light on the three-dimensional pharmacophoric features necessary for the future design of more potent and selective compounds. Here we present structural and functional analyses of a series of beta-amino-acid-containing HDAC inhibitors inspired by cyclic tetrapeptide natural products. To survey a diverse ensemble of pharmacophoric configurations, we systematically varied the position of the beta-amino acid, amino acid chirality, functionalization of the Zn(2+)-coordinating amino acid side chain, and alkylation of the backbone amide nitrogen atoms around the macrocycle. In many cases, the compounds were a single conformation in solution and exhibited potent activities against a number of HDAC isoforms as well as effective antiproliferative and cytotoxic activities against human tumor cells. High-resolution NMR solution structures were determined for a selection of the inhibitors, providing a useful means of correlating detailed structural information with potency. The structure-based approach described here is expected to furnish valuable insights toward the future design of more selective HDAC inhibitors.
Document type :
Journal articles
Complete list of metadatas

Cited literature [22 references]  Display  Hide  Download

https://www.hal.inserm.fr/inserm-01981397
Contributor : Elizabeth Bernardo <>
Submitted on : Tuesday, January 15, 2019 - 8:57:32 AM
Last modification on : Tuesday, November 26, 2019 - 4:12:09 PM
Long-term archiving on: Tuesday, April 16, 2019 - 12:46:53 PM

File

Vidakovic2018Eq4.pdf
Publication funded by an institution

Identifiers

Citation

Melita Vidakovic, Jessica Marinello, Maija Lahtela-Kakkonen, Daumantas Matulis, Vaida Linkuvienė, et al.. New Insights into the Epigenetic Activities of Natural Compounds. OBM Genetics, LIDSEN Publishing Inc., 2018, 131 (8), pp.3033-41. ⟨10.21926/obm.genet.1803029⟩. ⟨inserm-01981397⟩

Share

Metrics

Record views

107

Files downloads

211