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Published on: March 5, 2017
Controlling mutation: intervening in evolution as a therapeutic strategy
Ryan T Cirz1, Floyd E Romesberg
1The Scripps Research Institute, La Jolla, California 92037, USA.
Abstract:
Mutation is the driving force behind many processes linked to human disease, including cancer, aging, and the evolution of drug resistance. Mutations have traditionally been considered the inevitable consequence of replicating large genomes with polymerases of finite fidelity. Observations over the past several decades, however, have led to a new perspective on the process of mutagenesis. It has become clear that, under some circumstances, mutagenesis is a regulated process that requires the induction of pro-mutagenic enzymes and that, at least in bacteria, this induction may facilitate evolution. Herein, we review what is known about induced mutagenesis in bacteria as well as evidence that it contributes to the evolution of antibiotic resistance. Finally, we discuss the possibility that components of induced mutation pathways might be targeted for inhibition as a novel therapeutic strategy to prevent the evolution of antibiotic resistance.
Insights
Mutations, traditionally seen as random errors, can be regulated processes. Induced mutagenesis in bacteria may drive antibiotic resistance evolution, suggesting new therapeutic targets.
Area of Science:
- Microbiology
- Genetics
- Evolutionary Biology
Background:
- Mutations are fundamental to disease (cancer, aging) and drug resistance.
- Traditionally, mutations were viewed as unavoidable errors during genome replication.
- Recent findings reveal mutagenesis can be a regulated, induced process.
Purpose of the Study:
- To review induced mutagenesis in bacteria.
- To examine evidence linking induced mutagenesis to antibiotic resistance evolution.
- To explore therapeutic strategies targeting induced mutation pathways.
Main Methods:
- Literature review of induced mutagenesis.
- Analysis of evidence for mutagenesis in bacterial evolution.
- Discussion of potential therapeutic interventions.
Main Results:
- Mutagenesis can be induced and regulated, particularly in bacteria.
- Induced mutagenesis plays a role in the evolution of antibiotic resistance.
- Targeting induced mutation pathways is a potential strategy against resistance.
Conclusions:
- Induced mutagenesis is a significant factor in bacterial evolution and drug resistance.
- Understanding regulated mutagenesis opens avenues for novel therapeutic approaches.
- Inhibiting induced mutation pathways could combat antibiotic resistance.
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