All articles tagged with #bacteriophages
Virginia Tech researchers show that bacteriophages lysing B12-producing bacteria release vitamin B12 into the surrounding environment, feeding neighboring microbes that cannot make enough B12 themselves and reshaping gut microbial communities by altering diversity and composition; the timing and location of B12 release matter, suggesting viruses act as nutrient recyclers in microbial ecosystems.
Researchers used AI to design thousands of bacteriophage genomes, synthesized 300 candidates, and identified 16 novel, functional phages capable of infecting E. coli and overcoming bacterial resistance in tests; the work suggests potential AI‑driven phage therapies but raises biosafety and regulatory concerns about rapid, large‑scale pathogen design.
Stanford researchers used AI models Evo1 and Evo2 to design complete bacteriophage genomes capable of infecting E. coli, producing 16 viable designs—the first time AI designed entire viral genomes. The work could advance treatments for antibiotic-resistant infections, but it raises urgent biosafety and biosecurity questions about creating new life and potential misuse; researchers say they excluded viruses that infect complex organisms, held experiments in secure labs, and stress safeguards, while experts warn of risks including possible autonomous misbehavior by AI systems.
Researchers used AI to design complete bacteriophage genomes, selecting 302 designs and confirming 16 that kill E. coli in the lab; this marks the first time a complete viral genome was designed by AI and could accelerate phage therapy and drug development, but raises urgent biosafety and biosecurity concerns that require safeguards.
Researchers trained large genome models (Evo1 and Evo2) on DNA to generate virus-like genomes related to ΦX174. After screening 285 AI-suggested sequences, 16 produced viable viruses in E. coli, with higher similarity to the original ΦX174 correlating with higher viability. Some candidates carried novel genes or larger changes, illustrating the model's creativity within constraints. The work hints at potential phage-therapy applications but raises biosafety concerns about designing vertebrate-targeting viruses and underscores the need for governance of DNA-sequence design tools.
A NAMRU-SA team identified 14 new bacteriophages that target Enterococcus faecalis, naming them with Texas-themed monikers (one being a new species), in a bid to counter antibiotic-resistant infections and potentially aid dental root canals; phages offer pathogen-specific alternative or adjuncts to antibiotics, but require further study and formal taxonomy review before clinical use.
A study comparing phage-bacteria dynamics on the ISS and on Earth shows that the T7 phage infecting E. coli slows in microgravity but can still replicate after a long interval. Space conditions drive distinct mutation patterns in both phage and host, and researchers used microgravity-informed mutations to engineer phage variants that outperform Earth-informed ones against drug-resistant uropathogenic E. coli. The findings suggest extreme environments can reveal new design principles for phage therapy to combat antibiotic resistance and are reported in PLOS Biology.
A Space.com study compared T7 phage infections of E. coli in identical setups on the ISS and on Earth. In microgravity, infection slowed at short incubation times due to reduced fluid mixing and host stress, but after 23 days the infection could still proceed with fewer bacteria. The research also found microgravity-specific mutations in the phage genome, suggesting space conditions steer phage–host evolution differently. These results have implications for spaceflight microbiology and potentially for Earth-based phage therapies, though more work is needed to assess long-term health risks for astronauts.
Scientists aboard the International Space Station studied T7 phages infecting E. coli and found that microgravity slows the initial infection but drives unique co-evolution, with mutations arising in space that are not common on Earth; findings imply space environments shape microbial evolution and could inform Earth-based phage therapies against drug-resistant infections.
Scientists have developed a novel patch with microneedles loaded with bacteriophages that can be applied to food to target and destroy bacteria like E. coli and Salmonella, potentially reducing food poisoning risks before consumption, though practical and perceptual challenges remain.
A large-scale genomic analysis revealed over 100,000 complete lytic phages embedded within bacterial genomes across diverse species and environments, challenging traditional phage classification and highlighting their potential in therapy and ecology. The study identified new phage lineages, expanded known groups, and found therapeutic phages naturally present in bacterial populations, suggesting a broader and more dynamic phage-bacteria interaction than previously understood.
Researchers at VUB have developed genetically modified bacteriophages that deliver bacterial toxins to specifically target and kill multidrug-resistant E. coli, offering a promising alternative to traditional antibiotics in combating resistant bacterial infections.
Researchers are revisiting phage therapy, an old method using viruses to kill bacteria, as a potential solution to the growing problem of antibiotic-resistant superbugs. A recent study highlights how bacteria like Bacillus subtilis defend themselves against phages, revealing new insights that could improve phage therapy's effectiveness. Despite challenges such as immune system interference, the renewed interest aims to develop alternative treatments to antibiotics amid a looming public health crisis.
Scientists have created the first viruses designed by AI, capable of infecting and killing E. coli bacteria, demonstrating AI's potential in designing complex biological systems and advancing biotechnological therapies, though further research is needed for creating entire living organisms.
The study finds that phages with broad host ranges are common across various ecosystems, supported by extensive metagenomic data and advanced genomic analysis pipelines, highlighting their ecological significance and diversity.