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Title

In Silico Identification of Tripeptides as Lead Compounds for the Design of KOR Ligands.

Authors

Stefanucci, Azzurra; Iobbi, Valeria; Della Valle, Alice; Scioli, Giuseppe; Pieretti, Stefano; Minosi, Paola; Mirzaie, Sako; Novellino, Ettore; Mollica, Adriano

Abstract

The kappa opioid receptor (KOR) represents an attractive target for the development of drugs as potential antidepressants, anxiolytics and analgesics. A robust computational approach may guarantee a reduction in costs in the initial stages of drug discovery, novelty and accurate results. In this work, a virtual screening workflow of a library consisting of ~6 million molecules was set up, with the aim to find potential lead compounds that could manifest activity on the KOR. This in silico study provides a significant contribution in the identification of compounds capable of interacting with a specific molecular target. The main computational techniques adopted in this experimental work include: (i) virtual screening; (ii) drug design and leads optimization; (iii) molecular dynamics. The best hits are tripeptides prepared via solution phase peptide synthesis. These were tested in vivo, revealing a good antinociceptive effect after subcutaneous administration. However, further work is due to delineate their full pharmacological profile, in order to verify the features predicted by the in silico outcomes.

Subjects

TRIPEPTIDES; DRUG target; DRUG design; MOLECULAR dynamics; KETAMINE

Publication

Molecules, 2021, Vol 26, Issue 16, p4767

ISSN

1420-3049

Publication type

Academic Journal

DOI

10.3390/molecules26164767

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