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Rapid fine conformational epitope mapping using comprehensive mutagenesis and deep sequencing.

Caitlin A Kowalsky1, Matthew S Faber2, Aritro Nath3

  • 1From the Department of Chemical Engineering and Materials Science.

The Journal of Biological Chemistry
|August 23, 2015
PubMed
Summary
This summary is machine-generated.

Researchers developed a high-throughput method to map antibody epitopes, accelerating vaccine and therapeutic design. This approach precisely identifies conformational epitopes for antibody-antigen interactions, enhancing our understanding of antibody efficacy.

Keywords:
Bordetella pertussisTROP2antibodyantibody engineeringconformational epitope mappingepitope mappingprotein-protein interactiontumor necrosis factor (TNF)

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Area of Science:

  • Immunology
  • Structural Biology
  • Biotechnology

Background:

  • Understanding antibody-antigen interactions is crucial for developing effective vaccines and therapeutics.
  • Current methods for mapping conformational epitopes are limited in throughput and cost-effectiveness.
  • Single-cell techniques and antibody repertoire sequencing generate vast data awaiting efficient epitope mapping tools.

Purpose of the Study:

  • To develop a high-throughput, inexpensive method for mapping conformational epitopes.
  • To enable a deeper understanding of the structural basis of antibody efficacy.
  • To expedite the rational design of vaccines, prophylactics, and therapeutics.

Main Methods:

  • A novel approach combining comprehensive mutagenesis, cell surface display, and DNA deep sequencing.
  • Development of analytical equations to precisely identify epitope positions.
  • Application of the method to map epitopes for antibodies targeting TNF, pertussis toxin, and TROP2.

Main Results:

  • The developed method successfully mapped fine conformational epitopes for antibodies against TNF, pertussis toxin, and TROP2.
  • Experimentally determined epitopes were consistent with existing datasets, validating the method's reliability.
  • The pipeline allows for the generation of fine conformational epitope maps at a rate of four per day.

Conclusions:

  • The new method provides a high-throughput and cost-effective solution for mapping conformational epitopes.
  • This advancement facilitates a more comprehensive understanding of antibody-antigen interactions.
  • The rapid epitope mapping capability will accelerate the development of novel vaccines and therapeutics.