Journal of Enzyme Inhibition and Medicinal Chemistry (Dec 2023)

Design and statistical optimisation of emulsomal nanoparticles for improved anti-SARS-CoV-2 activity of N-(5-nitrothiazol-2-yl)-carboxamido candidates: in vitro and in silico studies

  • Ahmed A. Al-Karmalawy,
  • Dalia S. El-Gamil,
  • Rabeh El-Shesheny,
  • Marwa Sharaky,
  • Radwan Alnajjar,
  • Omnia Kutkat,
  • Yassmin Moatasim,
  • Mohamed Elagawany,
  • Sara T. Al-Rashood,
  • Faizah A. Binjubair,
  • Wagdy M. Eldehna,
  • Ayman M. Noreddin,
  • Mohamed Y. Zakaria

DOI
https://doi.org/10.1080/14756366.2023.2202357
Journal volume & issue
Vol. 38, no. 1

Abstract

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In this article, emulsomes (EMLs) were fabricated to encapsulate the N-(5-nitrothiazol-2-yl)-carboxamido derivatives (3a–3g) in an attempt to improve their biological availability and antiviral activity. Next, both cytotoxicity and anti-SARS-CoV-2 activities of the examined compounds loaded EMLs (F3a–g) were assessed in Vero E6 cells via MTT assay to calculate the CC50 and inhibitory concentration 50 (IC50) values. The most potent 3e-loaded EMLs (F3e) elicited a selectivity index of 18 with an IC50 value of 0.73 μg/mL. Moreover, F3e was selected for further elucidation of a possible mode of action where the results showed that it exhibited a combination of virucidal (>90%), viral adsorption (>80%), and viral replication (>60%) inhibition. Besides, molecular docking and MD simulations towards the SARS-CoV-2 Mpro were performed. Finally, a structure–activity relationship (SAR) study focussed on studying the influence of altering the size, type, and flexibility of the α-substituent to the carboxamide in addition to compound contraction on SARS-CoV-2 activity.

Keywords