Halogenated indoles eradicate bacterial persister cells and biofilms

Jin Hyung Lee, Yong Guy Kim, Giyeon Gwon, Thomas Keith Wood, Jintae Lee

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The emergence of antibiotic resistance has necessitated new therapeutic approaches to combat recalcitrant bacterial infections. Persister cells, often found in biofilms, are metabolically dormant, and thus, are highly tolerant to all traditional antibiotics and represent a major drug resistance mechanism. In the present study, 36 diverse indole derivatives were investigated with the aim of identifying novel compounds that inhibit persisters and biofilm formation by Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus. 5-Iodoindole and other halogenated indoles, 4-fluoroindole, 7-chloroindole, and 7-bromoindole, eradicated persister formation by E. coli and S. aureus, and 5-iodoindole most potently inhibited biofilm formation by the two bacteria. Unlike other antibiotics, 5-iodoindole did not induce persister cell formation, and 5-iodoindole inhibited the production of the immune-evasive carotenoid staphyloxanthin in S. aureus; hence, 5-iodoindole diminished the production of virulence factors in this strain. These results demonstrate halogenated indoles are potentially useful for controlling bacterial antibiotic resistance.

Original languageEnglish (US)
Article number123
JournalAMB Express
Volume6
Issue number1
DOIs
StatePublished - Dec 1 2016

Fingerprint

Indoles
Biofilms
Staphylococcus aureus
Bacterial Drug Resistance
Escherichia coli
Anti-Bacterial Agents
Virulence Factors
Carotenoids
Microbial Drug Resistance
Bacterial Infections
Drug Resistance
Bacteria
Therapeutics

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Applied Microbiology and Biotechnology
  • Orthopedics and Sports Medicine
  • Physiology (medical)

Cite this

Lee, Jin Hyung ; Kim, Yong Guy ; Gwon, Giyeon ; Wood, Thomas Keith ; Lee, Jintae. / Halogenated indoles eradicate bacterial persister cells and biofilms. In: AMB Express. 2016 ; Vol. 6, No. 1.
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Halogenated indoles eradicate bacterial persister cells and biofilms. / Lee, Jin Hyung; Kim, Yong Guy; Gwon, Giyeon; Wood, Thomas Keith; Lee, Jintae.

In: AMB Express, Vol. 6, No. 1, 123, 01.12.2016.

Research output: Contribution to journalArticle

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