Loharch, Saurabh and Chhabra, Sonali and Kumar, Abhinit and Swarup, Sapna and Parkesh, Raman (2021) Discovery and characterization of small molecule SIRT3-specific inhibitors as revealed by mass spectrometry. BIOORGANIC CHEMISTRY, 110.
Full text not available from this repository. (Request a copy)Abstract
Sirtuins play a prominent role in several cellular processes and are implicated in various diseases. The understanding of biological roles of sirtuins is limited because of the non-availability of small molecule inhibitors, particularly the specific inhibitors directed against a particular SIRT. We performed a high-throughput screening of pharmacologically active compounds to discover novel, specific, and selective sirtuin inhibitor. Several unique in vitro sirtuin inhibitor pharmacophores were discovered. Here, we present the discovery of novel chemical scaffolds specific for SIRT3. We have demonstrated the in vitro activity of these compounds using label-free mass spectroscopy. We have further validated our results using biochemical, biophysical, and computational studies. Determination of kinetic parameters shows that the SIRT3 specific inhibitors have a moderately longer residence time, possibly implying high in vivo efficacy. The molecular docking results revealed the differential selectivity pattern of these inhibitors against sirtuins. The discovery of specific inhibitors will improve the understanding of ligand selectivity in sirtuins, and the binding mechanism as revealed by docking studies can be further exploited for discovering selective and potent ligands targeting sirtuins.
| Item Type: | Article |
|---|---|
| Additional Information: | The copyright of this article belongs to ACADEMIC PRESS INC ELSEVIER SCIENCE |
| Uncontrolled Keywords: | High-throughput screeningl;NAD+ dependent protein deacetylase;Sirtuins;SIRT1;SIRT2;SIRT3;Inhibitors;Mass-spectrometry;MALDI;Fluorescent thermal shift assay;Docking |
| Subjects: | Q Science > QR Microbiology |
| Depositing User: | Dr. K.P.S.Sengar |
| Date Deposited: | 28 May 2021 04:39 |
| Last Modified: | 28 May 2021 04:39 |
| URI: | http://crdd.osdd.net/open/id/eprint/2679 |
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