PUBLICATION

Preliminary Insight of Pyrrolylated-Chalcones as New Anti-Methicillin-Resistant Staphylococcus aureus (Anti-MRSA) Agents

Authors
Gunasekharan, M., Choi, T.I., Rukayadi, Y., Mohammad Latif, M.A., Karunakaran, T., Mohd Faudzi, S.M., Kim, C.H.
ID
ZDB-PUB-210911-4
Date
2021
Source
Molecules   26(17): (Journal)
Registered Authors
Kim, Cheol-Hee
Keywords
anti-MRSA, molecular docking, pyrrolylated-chalcones, synthesis, zebrafish toxicity
MeSH Terms
  • Anti-Bacterial Agents/chemistry
  • Anti-Bacterial Agents/pharmacology*
  • Chalcones/chemistry
  • Chalcones/pharmacology*
  • Dose-Response Relationship, Drug
  • Methicillin-Resistant Staphylococcus aureus/drug effects*
  • Microbial Sensitivity Tests
  • Molecular Structure
  • Pyrroles/chemistry
  • Pyrroles/pharmacology*
  • Structure-Activity Relationship
PubMed
34500755 Full text @ Molecules
Abstract
Bacterial infections are regarded as one of the leading causes of fatal morbidity and death in patients infected with diseases. The ability of microorganisms, particularly methicillin-resistant Staphylococcus aureus (MRSA), to develop resistance to current drugs has evoked the need for a continuous search for new drugs with better efficacies. Hence, a series of non-PAINS associated pyrrolylated-chalcones (1-15) were synthesized and evaluated for their potency against MRSA. The hydroxyl-containing compounds (8, 9, and 10) showed the most significant anti-MRSA efficiency, with the MIC and MBC values ranging from 0.08 to 0.70 mg/mL and 0.16 to 1.88 mg/mL, respectively. The time-kill curve and SEM analyses exhibited bacterial cell death within four hours after exposure to 9, suggesting its bactericidal properties. Furthermore, the docking simulation between 9 and penicillin-binding protein 2a (PBP2a, PDB ID: 6Q9N) suggests a relatively similar bonding interaction to the standard drug with a binding affinity score of -7.0 kcal/mol. Moreover, the zebrafish model showed no toxic effects in the normal embryonic development, blood vessel formation, and apoptosis when exposed to up to 40 µM of compound 9. The overall results suggest that the pyrrolylated-chalcones may be considered as a potential inhibitor in the design of new anti-MRSA agents.
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