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Persistence of Tannerella forsythia and Fusobacterium nucleatum in Dental Plaque: a Strategic Alliance

  • Host Parasite Interactions in Periodontal Disease (C Genco and D Kinane, Section Editors)
  • Published:
Current Oral Health Reports Aims and scope Submit manuscript

Abstract

Purpose of Review

The Gram-negative oral pathogen Tannerella forsythia is implicated in the pathogenesis of periodontitis, an inflammatory disease characterized by progressive destruction of the tooth-supporting structures affecting over 700 million people worldwide. This review highlights the basis of why and how T. forsythia interacts with Fusobacterium nucleatum, a bacterium considered to be a bridge between the early and late colonizing bacteria of the dental plaque.

Recent Findings

The recent findings indicate that these two organisms have a strong mutualistic relationship that involves foraging by T. forsythia on F. nucleatum peptidoglycan and utilization of glucose, released by the hydrolytic activity of T. forsythia glucanase, as a nutrient by F. nucleatum. In addition, T. forsythia has the unique ability to generate a toxic and inflammogenic compound, methylglyoxal, from glucose. This compound can induce inflammation, leading to the degradation of periodontal tissues and release of host components as nutrients for bacteria to further exacerbate the disease.

Summary

In summary, this article will present our current understanding of mechanisms underpinning T. forsythia-F. nucleatum mutualism, and how this mutualism might impact periodontal disease progression.

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Acknowledgments

I thank Dr. Karen Falkner for the critical reading of this article and her helpful suggestions.

Funding

The work cited from the author’s laboratory was supported by grants (DE014749 and DE022870) from the NIDCR.

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  1. Department of Oral Biology, School of Dental Medicine, 3435 Main Street, University at Buffalo, State University of New York, Buffalo, NY, 14214, USA

    Ashu Sharma

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Sharma, A. Persistence of Tannerella forsythia and Fusobacterium nucleatum in Dental Plaque: a Strategic Alliance. Curr Oral Health Rep 7, 22–28 (2020). https://doi.org/10.1007/s40496-020-00254-6

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