Abstract
The functional characterization of “hypothetical” phage genes is a major bottleneck in basic and applied phage research. To compound this issue, the most suitable phages for therapeutic applications—the strictly lytic variety—are largely recalcitrant to classical genetic techniques due to low recombination rates and lack of selectable markers. Here we describe methods for fast and effective phage engineering that rely upon a Type III-A CRISPR-Cas system. In these methods, the CRISPR-Cas system is used as a powerful counterselection tool to isolate rare phage recombinants.
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Acknowledgments
A. H.-A. holds an Investigators in the Pathogenesis of Infectious Disease Award from the Burroughs Wellcome Fund. She is also supported by an NSF/MCB CAREER award [2054755] and NIH/NIAID [R21AI156636-01].
Declaration of Interests
A. H.-A. is the inventor of a US patent relating to this work (US20180251787A1).
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Hill, C.M., Hatoum-Aslan, A. (2024). Genetic Engineering of Therapeutic Phages Using Type III CRISPR-Cas Systems. In: Azeredo, J., Sillankorva, S. (eds) Bacteriophage Therapy. Methods in Molecular Biology, vol 2734. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-3523-0_18
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DOI: https://doi.org/10.1007/978-1-0716-3523-0_18
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