ArticleScientific reports2023
Prenylated isoflavonoids from Fabaceae against the NorA efflux pump in Staphylococcus aureus.
Article in Scientific reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 18 citations in OpenAlex.
- Methicillin-ResistantInternational journal of molecular sciences · 2026Review
- Characterization and targeting of deleterious mutations in Carbapenemase-producing Klebsiella pneumoniae: insights from variant calling, Computer-aided drug design, and DFT analysis.Archives of microbiology · 2026Article
- RND efflux pump inhibitor-like natural products as antibiotic adjuvants against multidrug-resistant gram-negative bacteria: a graded-evidence review.Frontiers in microbiology · 2026Review
- Flavonoids from mulberry leaves: physiological functions, molecular mechanisms and applications in juvenile animal health-A review.Frontiers in veterinary science · 2026Review
- Polyphenolic compounds inFrontiers in pharmacology · 2026Review
- Accessing Citrus and Soybean Flavonoids as Potential Efflux Pump Inhibitors in Drug-ResistantAntibiotics (Basel, Switzerland) · 2025Article
- Molecular features of prenylated (iso)flavonoids from Fabaceae in relation to their potential NorA inhibition inFrontiers in pharmacology · 2025Article
- Therapeutic Potential of Prenylated Flavonoids of the Fabaceae Family in Medicinal Chemistry: An Updated Review.International journal of molecular sciences · 2024Review
- Recent advances in the use of resveratrol againstMedicine internationalReview
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Authors and funding
6 authors at 2 institutions in 3 countries.
Funding
Abstract
Overexpression of NorA efflux pumps plays a pivotal role in the multidrug-resistance mechanism in S. aureus. Here, we investigated the activities of prenylated isoflavonoids, present in the legume plant family (Fabaceae), as natural efflux pump inhibitors (EPIs) in fluoroquinolone-resistant S. aureus. We found that four prenylated isoflavonoids, namely neobavaisoflavone, glabrene, glyceollin I, and glyceollin III, showed efflux pump inhibition in the norA overexpressing S. aureus. At sub-inhibitory concentrations, neobavaisoflavone (6.25 µg/mL, 19 µM) and glabrene (12.5 µg/mL, 39 µM), showed up to 6 times more Eth accumulation in norA overexpressing S. aureus than in the control. In addition, these two compounds boosted the MIC of fluoroquinolones up to eightfold. No fluoroquinolone potentiation was observed with these isoflavonoids in the norA knockout strain, indicating NorA as the main target of these potential EPIs. In comparison to the reported NorA EPI reserpine, neobavaisoflavone showed similar potentiation of fluoroquinolone activity at 10 µM, higher Eth accumulation, and less cytotoxicity. Neobavaisoflavone and glabrene did not exhibit membrane permeabilization effects or cytotoxicity on Caco-2 cells. In conclusion, our findings suggest that the prenylated isoflavonoids neobavaisoflavone and glabrene are promising phytochemicals that could be developed as antimicrobials and resistance-modifying agents to treat fluoroquinolone-resistant S. aureus strains.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.