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Updated: May 15, 2025

Testing the Role of Multicopy Plasmids in the Evolution of Antibiotic Resistance
Published on: May 2, 2018
Blocking horizontal transfer of antibiotic resistance genes: an effective strategy in combating antibiotic resistance
Pragyan Paramita Swain1, Rajesh Kumar Sahoo1
1Centre for Biotechnology, Siksha O Anusandhan (Deemed to be University), Bhubaneswar, India.
Abstract:
Antimicrobial resistance (AMR) poses a significant public health threat, with emerging and novel forms of antibiotic resistance genes (ARGs) and antibiotic resistant bacteria (ARB) potentially crossing international borders and challenging the global health systems. The rate of development of antibiotic resistance surpasses the development of new antibiotics. Consequently, there is a growing threat of bacteria acquiring resistance even to newer antibiotics further complicating the treatment of bacterial infections. Horizontal gene transfer (HGT) is the key mechanism for the spread of antibiotic resistance in bacteria through the processes of conjugation, transformation, and transduction. Several compounds, other than antibiotics, have also been shown to promote HGT of ARGs. Given the crucial role of HGT in the dissemination of ARGs, inhibition of HGT is a key strategy to mitigate AMR. Therefore, this review explores the contribution of HGT in bacterial evolution, identifies specific hotspots andhighlights the role of HGT inhibitors in impeding the spread of ARGs. By specifically focusing on the HGT mechanism and its inhibition, these inhibitors offer a highly promising approach to combating AMR.
Insights
Antimicrobial resistance (AMR) is a global threat. Inhibiting horizontal gene transfer (HGT), a key mechanism for spreading antibiotic resistance genes (ARGs), offers a promising strategy to combat AMR.
Area of Science:
- Microbiology
- Public Health
- Genetics
Background:
- Antimicrobial resistance (AMR) is a significant global health challenge.
- The development of new antibiotics lags behind the emergence of antibiotic resistance genes (ARGs) and antibiotic-resistant bacteria (ARB).
- Horizontal gene transfer (HGT) is a primary driver for the dissemination of ARGs among bacteria.
Purpose of the Study:
- To review the contribution of HGT to bacterial evolution.
- To identify hotspots for ARG dissemination via HGT.
- To highlight the potential of HGT inhibitors as a strategy to mitigate AMR.
Main Methods:
- Literature review focusing on HGT mechanisms (conjugation, transformation, transduction).
- Analysis of factors promoting HGT of ARGs.
- Exploration of HGT inhibitors as a therapeutic strategy.
Main Results:
- HGT plays a crucial role in the spread of ARGs and bacterial evolution.
- Certain non-antibiotic compounds can promote HGT of ARGs.
- Inhibiting HGT is identified as a key strategy to control AMR.
Conclusions:
- Targeting HGT mechanisms is a promising approach to combat the spread of antimicrobial resistance.
- HGT inhibitors offer a novel strategy to mitigate the public health threat of AMR.
- Further research into HGT inhibitors is warranted to develop effective interventions against resistant bacteria.
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