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Related Experiment Video

Updated: Jul 19, 2026

T4 Bacteriophage and E. coli Interaction in the Murine Intestine: A Prototypical Model for Studying Host-Bacteriophage Dynamics In Vivo
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Multicomponent anthrax toxin display and delivery using bacteriophage T4.

Sathish B Shivachandra1, Qin Li, Kristina K Peachman

  • 1Department of Biology, 103 McCort Ward Hall, The Catholic University of America, 620 Michigan Ave., NE, Washington, DC 20064, USA.

Vaccine
|October 31, 2006
PubMed
Summary

Researchers developed a novel multicomponent vaccine system using bacteriophage T4 to display multiple antigens. This system successfully elicited strong immune responses against anthrax toxins, offering a new approach for vaccine development.

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Area of Science:

  • Biotechnology
  • Vaccinology
  • Molecular Biology

Background:

  • Bacteriophage T4 capsid proteins, Hoc and Soc, are suitable for antigen display.
  • Antigen fusion to Hoc allows for display on T4 phage capsids.

Purpose of the Study:

  • To develop a multicomponent antigen display and delivery system using bacteriophage T4.
  • To evaluate the immunogenicity of displayed anthrax toxin antigens (PA, LF, EF).

Main Methods:

  • Fusion of anthrax toxin proteins (PA, LF, EF) to the Hoc protein.
  • Over-expression and purification of recombinant fusion proteins.
  • In vitro assembly of fusion proteins onto T4 phage capsids.
  • Immunization of mice with engineered T4 phage particles.

Main Results:

  • Anthrax-Hoc fusion proteins were efficiently displayed on T4 capsids individually or in combinations.
  • T4 phage displaying PA, LF, and EF elicited strong antigen-specific antibodies and toxin neutralization.
  • Multicomponent T4 phage vaccines showed enhanced immune responses compared to single-antigen vaccines.

Conclusions:

  • Bacteriophage T4 serves as an effective platform for multicomponent antigen display.
  • This system can generate broad immunological responses and offers a promising strategy for developing customized vaccines against infectious diseases.