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Updated: Jun 24, 2026

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Targeted Antibody Blocking by a Dual-Functional Conjugate of Antigenic Peptide and Fc-III Mimetics (DCAF)
Published on: September 17, 2019
Towards quorum-quenching catalytic antibodies
Prashant B Kapadnis1, Evan Hall, Madeleine Ramstedt
1Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UKCB2 1EW. drspring@ch.cam.ac.uk.
Summary
Researchers developed a new way to reduce bacterial harm by creating catalytic antibodies. These antibodies break down bacterial quorum-sensing molecules, a key factor in virulence.
Area of Science:
- Biochemistry
- Immunology
- Microbiology
Background:
- Bacterial virulence relies on quorum-sensing molecules.
- Targeting these molecules offers a novel strategy to control bacterial infections.
Purpose of the Study:
- To develop a novel method for attenuating bacterial virulence.
- To utilize designed transition-state analogues for antibody selection.
Main Methods:
- Selection of human catalytic antibodies using designed transition-state analogues.
- Demonstration of antibody capability in degrading bacterial quorum-sensing molecules.
Main Results:
- Successful development of catalytic antibodies.
- Confirmation of antibodies' ability to degrade quorum-sensing molecules, thereby reducing virulence.
Conclusions:
- This approach offers a promising strategy for developing new anti-virulence therapies.
- Catalytic antibodies present a viable tool for degrading bacterial signaling molecules.
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