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Mycobacteriophages as Genomic Engineers and Anti-infective Weapons
Mark R Sullivan1, Eric J Rubin1,2, Charles L Dulberger3,4
1Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA.
Abstract:
Mycobacterium abscessus (Mab) is an emerging pathogen that is highly tolerant to current antibiotic therapies, and the current standard of care has a high failure rate. Mycobacteriophages represent a promising alternative treatment that have the potential to kill Mab with few side effects. However, the repertoire of phages that infect Mab is limited, and little is understood about the determinants of phage susceptibility in mycobacteria. Two studies from the Hatfull group (R. M. Dedrick, B. E. Smith, R. A. Garlena, D. A. Russell, et al., mBio 12:e03431-20, 2021, https://doi.org/10.1128/mBio.03431-20, and R. M. Dedrick, H. G. Aull, D. Jacobs-Sera, R. A. Garlena, et al., mBio 12:e03441-20, 2021, https://doi.org/10.1128/mBio.03441-20) shed new light on the natural phage complement of Mab and provide some of the first insights into what factors might drive susceptibility to these phages. These studies not only lay the groundwork for therapeutic development of more effective phage therapy in Mab but also provide a foothold for studying how mobile elements such as phages and plasmids impact Mab biology and evolution.
Insights
Mycobacteriophages offer a promising alternative to antibiotics for treating Mycobacterium abscessus (Mab) infections. These studies reveal factors influencing Mab
Area of Science:
- Microbiology
- Genetics
- Infectious Diseases
Background:
- Mycobacterium abscessus (Mab) is a resilient pathogen with limited treatment options.
- Current antibiotic therapies for Mab have high failure rates.
- Mycobacteriophages are potential alternatives with fewer side effects.
Purpose of the Study:
- To investigate the natural phage complement of Mab.
- To identify factors determining Mab susceptibility to phages.
- To advance phage therapy development for Mab infections.
Main Methods:
- Analysis of natural phage-bacterial interactions.
- Identification of genetic determinants of phage susceptibility.
- Comparative genomics of mycobacteriophages and Mab.
Main Results:
- Characterization of a diverse repertoire of phages infecting Mab.
- Discovery of key factors influencing Mab phage susceptibility.
- Establishment of a foundation for understanding phage-Mab interactions.
Conclusions:
- Phage therapy holds significant promise for treating Mab infections.
- Understanding phage-Mab interactions is crucial for therapeutic development.
- Mobile genetic elements like phages and plasmids impact Mab evolution.
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