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Therapeutic effect of llama derived VHH fragments against Streptococcus mutans on the development of dental caries

Abstract

Streptococcus mutans is the main cause of dental caries. We evaluated the therapeutic effect of variable regions of a llama heavy chain antibody fragments directed against S. mutans named S36-VHH (S for Streptococcus) alone or fused with glucose oxidase (GOx) from Aspergillus niger. Western blot analysis and ELISA revealed binding of the S36-VHH to the streptococcal antigen I/II adhesin molecule of S. mutans serotype C. In a rat-desalivated caries model, daily administration of S36-VHH significantly reduced the development of smooth surface caries. No additional therapeutic effect of GOx was observed. Our results suggest that llama VHH antibodies may be a potential benefit as prophylaxis against dental caries.

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Acknowledgement

This work was supported by the Foundation for Preventive Caries Research (Patentmedelsfonden) and the Swedish Research Council.

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Correspondence to Lennart Hammarström.

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Krüger, C., Hultberg, A., Marcotte, H. et al. Therapeutic effect of llama derived VHH fragments against Streptococcus mutans on the development of dental caries. Appl Microbiol Biotechnol 72, 732–737 (2006). https://doi.org/10.1007/s00253-006-0347-0

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Keywords

  • Dental Caries
  • Streptococcus Mutans
  • Heavy Chain Antibody
  • Streptococcal Antigen
  • Talon Metal Affinity Resin