Most phage-based research has remained focused on naturally occurring viruses, largely because traditional methods for modifying phages are slow, complex, and difficult to scale.<\/p>\n
Using the new system, the team constructed a\u00a0P. aeruginosa\u00a0phage from 28 synthetic DNA fragments. They then programmed the virus with new capabilities by introducing point mutations as well as DNA insertions and deletions. These changes allowed the researchers to swap tail fibre genes to change which bacteria the phage could infect and to add fluorescent markers that made infections visible in real time.<\/p>\n
Bio-technological leap<\/p>\n
Lead scientist Andy Sikkema, as reported by Pharmaceutical Microbiology Resources<\/a>, says: \u201cEven in the best of cases, bacteriophage engineering has been extremely labour-intensive. Researchers spent entire careers developing processes to engineer specific model bacteriophages in host bacteria.\u201d<\/p>\n Sikkema adds: \u201cThis synthetic method offers technological leaps in simplicity, safety and speed, paving the way for biological discoveries and therapeutic development.\u201d<\/p>\n Digital DNA<\/p>\n The platform enables scientists to assemble an entire phage genome outside the cell using synthetic DNA, incorporating all planned genetic changes during construction. Once assembled, the genome is introduced into a safe laboratory strain where it becomes an active bacteriophage.<\/p>\n This strategy avoids many long-standing obstacles in phage research. Traditional approaches depend on maintaining physical phage samples and using specialized host bacteria, which can be especially challenging when working with viruses that infect dangerous human pathogens. The new method also eliminates the need for repeated rounds of screening or step-by-step genetic edits inside living cells.<\/p>\n In contrast with other DNA assembly techniques that combine fewer but longer fragments, the new platform uses shorter DNA segments. These shorter pieces are easier to produce, less toxic to host cells, and less likely to contain errors. The method also works well with phage genomes that contain repeated sequences or extreme GC content, both of which often complicate DNA assembly.<\/p>\n![\"\"](\"https:\/\/www.newsbeep.com\/ca\/wp-content\/uploads\/2026\/04\/Thiomargarita-bacteria.jpg\")
Mycobacterium tuberculosis (Public Health Image Library, NIAID, Image ID: 18139)<\/p>\n
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