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Related Experiment Videos

Engineered immunoglobulin molecules as vehicles for T cell epitopes

H Zaghouani1, Y Kuzo, H Kuzo

  • 1Department of Microbiology, Mount Sinai School of Medicine, New York, New York 10029.

International Reviews of Immunology
|January 1, 1993
PubMed
Summary

Engineered antibodies can display foreign peptides, stimulating T cell responses against the peptides and influenza virus. This approach offers a safe, long-lived alternative to current peptide-based vaccines.

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Area of Science:

  • Immunology
  • Molecular Biology
  • Vaccine Development

Background:

  • Immunoglobulins (Igs) possess variable (V) regions with antigenic determinants.
  • Complementarity-determining regions (CDRs) within V regions can accommodate foreign peptide insertions.

Purpose of the Study:

  • To engineer immunoglobulins to express foreign epitopes.
  • To evaluate the efficacy of engineered Igs in stimulating cellular immune responses.

Main Methods:

  • Insertion of influenza virus epitopes into the heavy chain CDR3 loop of an anti-arsonate antibody.
  • Assessment of Ig V region integrity and peptide expression.
  • Evaluation of T cell responses to engineered Igs.

Main Results:

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  • Foreign peptides (11-15 amino acids) were successfully expressed in the Ig heavy chain without affecting light chain pairing.
  • Cellular machinery processed the Ig-context peptides for T cell recognition.
  • Engineered Igs induced T cell responses specific for the inserted peptide and influenza virus.

Conclusions:

  • Engineered Igs can serve as effective vehicles for presenting T and B cell epitopes.
  • This strategy provides a potential platform for developing safe, long-lived vaccines with reduced side effects.
  • This approach overcomes limitations of synthetic peptide vaccines and recombinant viral vaccines.