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Related Experiment Videos

Efficient display of scFv antibodies on bacteriophage lambda.

Paola Vaccaro1, Emiliano Pavoni, Giorgia Monteriù

  • 1Kenton Labs, c/o Sigma-Tau, Pomezia (Rome), Italy.

Journal of Immunological Methods
|February 25, 2006
PubMed
Summary

This study shows functional single-chain (scFv) antibodies can be displayed on bacteriophage lambda capsids. These engineered bacteriophages maintain antigen-binding capabilities, demonstrating a viable method for antibody display.

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Area of Science:

  • Molecular Biology
  • Biotechnology
  • Immunology

Background:

  • Bacteriophage display is a powerful technique for protein engineering.
  • Engineering bacteriophage lambda capsids for antibody display offers a novel platform.

Purpose of the Study:

  • To demonstrate efficient display of functional single-chain (scFv) antibodies on bacteriophage lambda.
  • To compare N- and C-terminal fusion of scFv to the lambda capsid protein D (gpD).

Main Methods:

  • Cloning of anti-CEA scFv antibody gene into two different vectors for N- and C-terminal fusion to gpD.
  • Bacteriophage lambda production and purification.
  • Antigen binding assays to confirm antibody functionality.

Main Results:

Related Experiment Videos

  • Functional scFv antibodies were successfully displayed on bacteriophage lambda capsids.
  • Antibody fragments retained antigen-binding specificity despite the reducing cytoplasmic environment.
  • Comparison of N- and C-terminal fusion revealed differences in display capacity, stability, and assembly efficiency.

Conclusions:

  • Bacteriophage lambda capsids are suitable for displaying functional scFv antibodies.
  • The display system maintains antibody folding and antigen-binding activity.
  • This method provides a robust platform for antibody engineering and selection.