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Quorum-sensing system in Acinetobacter baumannii: a potential target for new drug development
K Saipriya1, C H Swathi1, K S Ratnakar1
1Department of Molecular Diagnostics & Biomarkers, Global Medical Education & Research Foundation (GMERF), Lakdi-Ka-Pul, Hyderabad, India.
Journal of Applied Microbiology
|May 19, 2019
Summary
Acinetobacter baumannii
Area of Science:
- Microbiology
- Infectious Diseases
- Drug Resistance
Background:
- Acinetobacter baumannii is a significant cause of hospital-acquired infections, particularly in intensive care units.
- Multidrug-resistant and extensively drug-resistant strains are a growing concern, leading to high mortality rates.
- Biofilm formation is a key factor in Acinetobacter baumannii's drug resistance.
Purpose of the Study:
- To review the current state of knowledge on quorum sensing (QS) in Gram-negative bacteria, with a focus on Acinetobacter baumannii.
- To explore QS mediators, their detection, and quantification.
- To identify potential drug targets within the QS pathway and candidate quorum quenchers for therapeutic development.
Main Methods:
- Literature review of quorum sensing mechanisms in Gram-negative bacteria and Acinetobacter baumannii.
- Analysis of QS mediators, their characteristics, and detection methods.
- Identification and compilation of candidate quorum quenching compounds and their mechanisms of action.
Main Results:
- Quorum sensing facilitates biofilm formation and virulence factor synthesis in Acinetobacter baumannii.
- Several QS mediators and their pathways have been identified as potential drug targets.
- Various quorum quenching compounds show promise in inhibiting biofilm formation and virulence, with a low likelihood of resistance development.
Conclusions:
- Quorum quenching and biofilm inhibition represent promising strategies to combat drug-resistant Acinetobacter baumannii infections.
- Quorum quenchers can serve as adjunct therapeutics, enhancing antibiotic efficacy and reducing resistance.
- Targeting QS pathways offers a novel approach to developing new treatments for Acinetobacter baumannii infections.
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