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Updated: Jul 13, 2026

A Simple and Efficient Approach to Construct Mutant Vaccinia Virus Vectors
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Published on: October 30, 2016

Mucosal vaccine vectors: replication-competent versus replication-deficient poxviruses.

Lukena U Karkhanis1, Ted M Ross

  • 1Department of Infectious Diseases and Microbiology, University of Pittsburgh, Pittsburgh, PA 15261, USA.

Current Pharmaceutical Design
|July 14, 2007
PubMed
Summary

Viral vectors offer promising mucosal immunization strategies against infectious diseases. Enhancing replication-deficient vectors with genetic adjuvants or genomic modifications may improve vaccine efficacy and safety.

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Area of Science:

  • Immunology
  • Vaccinology
  • Microbiology

Background:

  • Mucosal surfaces are primary entry points for pathogens.
  • Targeting vaccines to mucosal surfaces is crucial for preventing pathogen transmission.
  • Viral vectors are being explored for effective mucosal immunization.

Purpose of the Study:

  • To evaluate viral vectors, particularly poxviruses, as a strategy for mucosal immunization.
  • To compare the efficacy and safety of replication-competent versus replication-deficient viral vectors.
  • To explore methods for enhancing the efficiency of mucosal vaccines.

Main Methods:

  • Utilizing poxviruses as gene-insert-expressing vectors for mucosal vaccination.
  • Comparing replication-competent (e.g., vaccinia) and replication-deficient (e.g., MVA, ALVAC, NYVAC) vectors.

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Last Updated: Jul 13, 2026

A Simple and Efficient Approach to Construct Mutant Vaccinia Virus Vectors
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Published on: October 30, 2016

Rapid, Seamless Generation of Recombinant Poxviruses using Host Range and Visual Selection
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Published on: May 24, 2020

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  • Investigating strategies like co-delivery with genetic adjuvants (cytokines) or genomic modifications to improve vaccine performance.

    • Main Results:

    • Replication-competent vectors show high efficacy but raise safety concerns.
    • Replication-deficient vectors may offer improved safety but potentially reduced immunogenicity.
    • Co-delivery with genetic adjuvants or genomic alterations are promising for enhancing vaccine efficiency.

    Conclusions:

    • Viral vectors, especially poxviruses, are attractive for mucosal immunization.
    • Optimizing vector design and delivery (e.g., using genetic adjuvants) is key to developing effective and safe mucosal vaccines.
    • Further research into modified viral vectors holds promise for next-generation mucosal vaccines.