Reinventing the fight against bacteria,
one phage at a time.

Source : full video here  https://www.canal-u.tv/177442 As phage therapy gains momentum as a potential solution to the global antibiotic resistance crisis, understanding why bacteria resist phage infection has become one of the field's most pressing challenges. For decades, phage resistance was largely viewed through a relatively simple framework: bacteria escape infection by modifying or losing the surface receptors used by phages for attachment. While receptor-mediated resistance remains a fundamental mechanism, recent discoveries suggest that the interaction between bacteriophages and their hosts is considerably more complex. During a presentation delivered at the Phages 2026 conference, Clarisse Plantady explored the determinants of phage resistance in clinical isolates of Pseudomonas aeruginosa, one of the most problematic opportunistic pathogens encountered in modern healthcare. The study provides a detailed examination of how both extracellular and intracellular mechanisms c...

Media contact:   HSNews@pitt.edu As antimicrobial resistance continues to rise worldwide, bacteriophage therapy is increasingly being viewed as one of the most promising alternatives to conventional antibiotics. While numerous compassionate-use cases and early clinical studies have demonstrated the potential of phages to treat multidrug-resistant infections, the field still faces significant scientific and regulatory challenges. A major obstacle has been the lack of standardized tools capable of predicting how phages behave in the human body, how they should be formulated, and how therapeutic cocktails can be optimized for clinical use. ©  www.medschool.pitt.edu To address these challenges, the U.S. National Institute of Allergy and Infectious Diseases (NIAID) has established the first coordinated national research network dedicated specifically to advancing phage therapeutics. Through its new Centers for Accelerating Phage Therapy to Combat ESKAPE Pathogens program, known as ...

Microbial ecosystems responsible for converting carbon dioxide into methane are attracting growing attention as sustainable technologies for carbon recycling and renewable energy production. Yet despite their industrial importance, these complex communities remain vulnerable to biological forces that are often poorly understood. Among the most influential of these forces are bacteriophages, viruses that infect bacteria and can profoundly reshape microbial populations. A new study published in Nature Communications provides a detailed look at how phages and their hosts continuously adapt to one another within an anaerobic carbon dioxide-converting microbiome, revealing a dynamic evolutionary conflict driven by single-nucleotide genetic variation. The Phage Therapy  © The research followed a thermophilic biomethanation reactor over a period of 353 days. During this time, the system experienced an unexpected disturbance caused by a technical malfunction, creating a rare opportunity to...

For decades, bacteriophages have been studied primarily as bacterial predators, but a growing body of work now shows that some of their most sophisticated biological weapons are not the viral particles themselves, but the enzymatic systems they carry on their surface. Among these, phage depolymerases have emerged as one of the most promising tools in modern anti-infective research, especially against encapsulated multidrug-resistant pathogens such as Klebsiella pneumoniae. A new study published in Nature Communications introduces DepoCatalog, the largest experimentally validated collection of recombinant Klebsiella phage depolymerases assembled to date. The project brings together 129 distinct enzymes capable of degrading bacterial capsules across 75 Klebsiella capsule types, providing an unprecedented structural and functional overview of how bacteriophages adapt to the remarkable diversity of bacterial polysaccharides. The Phage Therapy (c) Klebsiella pneumoniae remains one of the m...

For decades, immunologists considered bacterial antiviral defenses and human immune systems to be largely unrelated biological inventions. Bacteria were thought to rely on relatively simple molecular mechanisms to defend themselves against bacteriophages, while complex antiviral immunity in humans and other eukaryotes was assumed to have emerged much later during evolution. A growing body of research is now profoundly reshaping that perspective. According to a major feature published in Science, some of the most important components of human innate immunity may ultimately trace their origins back billions of years to ancient molecular warfare between microbes and bacteriophages. Molecular components of human immunity depicted in this illustration can be traced to some of the antiviral arsenal wielded by bacteria.  RIOKA HAYAMA  ©   2026 American Association for the Advancement of Science. The discovery emerged gradually as researchers began uncovering an enormous diversit...

As antimicrobial resistance continues to threaten healthcare systems worldwide, researchers at Near East University are advancing the development of bacteriophage-based therapies targeting multidrug-resistant bacterial infections. The university recently announced the isolation of a third therapeutic bacteriophage, named NEU2025, representing another major step in the institution’s expanding phage therapy program. Dr Ferdiye Taner, neu.edu.tr The newly identified phage was isolated through a collaboration between Near East University and La Trobe University in Australia. Genome analysis classified NEU2025 within the Pbunavirus group, a family of lytic bacteriophages known for infecting Pseudomonas aeruginosa, one of the most clinically problematic opportunistic pathogens associated with hospital-acquired infections and antibiotic resistance. Pseudomonas aeruginosa is particularly concerning because of its remarkable ability to develop multidrug resistance through mechanisms such ...

As bacteriophages and bacteria continue their evolutionary arms race, researchers are uncovering increasingly sophisticated defense strategies used by microbial cells to survive viral infection. A new study published in Nature Communications reveals how a bacterial anti-phage defense system known as Hna can be directly activated by proteins encoded by invading phages, triggering a destructive immune response based on uncontrolled DNA degradation. The Phage Therapy The work, conducted by researchers at the University of Texas at Austin, provides one of the clearest mechanistic descriptions to date of how abortive infection systems function at the molecular level. Unlike classical bacterial immune systems such as CRISPR-Cas or restriction-modification complexes, abortive infection systems do not necessarily aim to save the infected bacterium itself. Instead, they sacrifice the infected cell to prevent viral replication and protect the surrounding bacterial population. The Hna system, or...