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Related Concept Videos

Viral Recombination00:57

Viral Recombination

Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.

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Related Experiment Video

Updated: May 15, 2026

Rapid, Seamless Generation of Recombinant Poxviruses using Host Range and Visual Selection
09:25

Rapid, Seamless Generation of Recombinant Poxviruses using Host Range and Visual Selection

Published on: May 24, 2020

Recombinant poxviruses: versatile tools for immunological assays.

Nicholas A Siciliano1, Lan Huang1, Laurence C Eisenlohr2

  • 1Department of Microbiology and Immunology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA.

Methods in Molecular Biology (Clifton, N.J.)
|January 19, 2013
PubMed
Summary

This study explores recombinant poxviruses for studying antigen processing and presentation. Engineered Ectromelia virus offers a natural host-pathogen model, enhancing immune surveillance research.

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Last Updated: May 15, 2026

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Area of Science:

  • Immunology
  • Virology
  • Molecular Biology

Background:

  • Antigen processing and presentation are crucial for immune surveillance.
  • Recombinant poxviruses, particularly Vaccinia virus (VACV), are widely used for model antigen biosynthesis in research.
  • VACV systems offer advantages like large DNA capacity, efficient recombination, broad cell tropism, and high antigen expression.

Purpose of the Study:

  • To describe protocols for recombinant poxvirus systems to study antigen processing and presentation.
  • To introduce engineered Ectromelia virus as a model for studying host-pathogen interactions in antigen presentation.
  • To provide insights and troubleshooting for improving experimental reproducibility and fidelity.

Main Methods:

  • Utilizing recombinant poxviruses, including Vaccinia virus (VACV) and engineered Ectromelia virus, for de novo antigen biosynthesis.
  • Employing these systems to study both MHC class I- and MHC class II-restricted antigen processing and presentation.
  • Developing and refining protocols for generating and using recombinant poxviruses in immunological assays.

Main Results:

  • Poxviruses, including VACV, are effective for high-level antigen expression and infection across various cell types.
  • Engineered Ectromelia virus provides a natural murine host-pathogen model for investigating epitope generation and host response.
  • Established protocols facilitate the study of antigen processing and presentation, with troubleshooting guidance.

Conclusions:

  • Recombinant poxviruses, especially VACV, are valuable tools for studying antigen processing and presentation.
  • Engineered Ectromelia virus presents a promising alternative for in vivo studies within a natural host-pathogen context.
  • Optimized protocols enhance the reliability and accuracy of antigen processing and presentation experiments.