Phage-mediated Inhibition
Phage-mediated Inhibition - Related Videos
03:00
Assessing Phage-Mediated Bacterial Growth Inhibition Using Optical Density Measurements
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2026
Source: Niu, Y. D., et al. Bacteriophage Effectiveness for Biocontrol of Foodborne Pathogens Evaluated via High-Throughput Settings. J. Vis. Exp. (2021)This video demonstrates a microplate-based assay to evaluate the lytic activity of phage cocktails against E.coli bacterial cultures. It highlights how changes in optical density reveal phage potency and the concentration needed for complete bacterial...
03:36
Generating Gene Deletions in E. coli via Phage-Mediated Transfer of an Excisable Antibiotic Cassette
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2026
Source: Saragliadis, A., et al. Producing Gene Deletions in Escherichia coli by P1 Transduction with Excisable Antibiotic Resistance Cassettes. J. Vis. Exp. (2018)This video demonstrates the phage-mediated transfer of donor DNA carrying an excisable antibiotic resistance cassette into Escherichia coli. The integrated cassette replaces the target gene via homologous recombination, resulting in a stable gene deletion.
02:46
A Phage Therapy against Pseudomonas aeruginosa Infection in Zebrafish Embryos
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2025
The video demonstrates the phage therapy technique targeting Pseudomonas aeruginosa infection in cystic fibrosis zebrafish embryos. Phage therapy effectively diminishes bacterial load and mitigates proinflammatory immune responses in CF zebrafish embryos infected with bacteria, leading to reduced CF embryo lethality.
04:30
Phage Purification from Borrelia burgdorferi
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2026
Source: Eggers, C. H. Phage-Mediated Genetic Manipulation of the Lyme Disease Spirochete Borrelia burgdorferi. J. Vis. Exp. (2022).This video demonstrates the isolation of borrelial phage particles from a Borrelia burgdorferi suspension using polyethylene glycol-mediated phase separation. The sample is centrifuged, treated with a salt solution, and a molecular crowding agent to precipitate phages. Chloroform extraction is done to remove debris and concentrate phage particles. The purified phage...
03:42
Evaluating Virus Spread Inhibition Through microRNA Mimic-Mediated Genome Silencing
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2026
Source: Ruiz, A. J. and Russell, S. J. MicroRNA-based Regulation of Picornavirus Tropism. J. Vis. Exp. (2017)This video demonstrates the use of synthetic microRNA mimics to inhibit viral replication in cultured epithelial-like cells selectively. It highlights how microRNA-directed genome silencing can block virus spread and confirm targeting specificity through downstream infectivity analysis.
FAQs
The decisive early event is receptor recognition. A phage must attach to a compatible receptor on a susceptible bacterium before it can inject its genetic material. This specificity helps explain why inhibition is directed toward particular bacterial cells rather than indiscriminately affecting microbial populations. In biology, receptor compatibility links virus-host interaction to observed selectivity.
After entry, the phage genetic material redirects bacterial host functions toward production of new phage particles. This shift changes the infected cell into a source of progeny. The infection cycle matters because inhibition is not caused only by genetic-material entry; it also depends on takeover of host functions, particle production, and subsequent release.
The key distinction is its targeted dependence on phage recognition of susceptible bacterial cells. Conventional antimicrobials are presented in the overview as a broader comparison, whereas phage-mediated inhibition is linked specifically to virus-host compatibility and cell lysis. That selectivity makes the process relevant when researchers seek approaches aimed at particular bacterial populations.
Researchers can examine the process as a sequence: phage attachment to a bacterial receptor, injection of genetic material, redirection of host functions, production of new phage particles, and cell lysis. Connecting these stages helps distinguish initial recognition from later population reduction and provides a framework for studying virus-host interactions experimentally.
The process informs several settings identified in the overview, including phage therapy, food safety, environmental biocontrol, and targeted management of bacterial infections. These applications reflect the same central outcome: reducing bacterial populations through a biologically directed process. Its potential value lies in applying phage specificity where conventional antimicrobial approaches may not provide the desired targeting.
Phage-mediated inhibition supports investigation of virus-host interactions, bacterial resistance, and microbial population dynamics. Researchers can relate receptor recognition and infection progression to changes in bacterial survival, while cell lysis provides a clear population-level outcome. Studying these connections helps place individual infection events within broader patterns of bacterial persistence and decline.