Abstract
Early childhood caries (ECC) is a biofilm-mediated disease. Social, environmental, and behavioral determinants as well as innate susceptibility are major influences on its incidence; however, from a pathogenetic standpoint, the disease is defined and driven by oral dysbiosis. In other words, the disease occurs when the natural equilibrium between the host and its oral microbiome shifts toward states that promote demineralization at the biofilm-tooth surface interface. Thus, a comprehensive understanding of dental caries as a disease requires the characterization of both the composition and the function or metabolic activity of the supragingival biofilm according to well-defined clinical statuses. However, taxonomic and functional information of the supragingival biofilm is rarely available in clinical cohorts, and its collection presents unique challenges among very young children. This paper presents a protocol and pipelines available for the conduct of supragingival biofilm microbiome studies among children in the primary dentition, that has been designed in the context of a large-scale population-based genetic epidemiologic study of ECC. The protocol is being developed for the collection of two supragingival biofilm samples from the maxillary primary dentition, enabling downstream taxonomic (e.g., metagenomics) and functional (e.g., transcriptomics and metabolomics) analyses. The protocol is being implemented in the assembly of a pediatric precision medicine cohort comprising over 6000 participants to date, contributing social, environmental, behavioral, clinical, and biological data informing ECC and other oral health outcomes.
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Acknowledgments
This work was supported by a grant from the National Institutes of Health, National Institute of Dental and Craniofacial Research, U01-DE025046. DS is supported by the Swedish Research Council (4.1-2016-00416). The Microbiome Core is supported in part by the NIH/National Institute of Diabetes and Digestive and Kidney Diseases grant P30 DK34987.
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Divaris, K. et al. (2019). The Supragingival Biofilm in Early Childhood Caries: Clinical and Laboratory Protocols and Bioinformatics Pipelines Supporting Metagenomics, Metatranscriptomics, and Metabolomics Studies of the Oral Microbiome. In: Papagerakis, P. (eds) Odontogenesis. Methods in Molecular Biology, vol 1922. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-9012-2_40
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DOI: https://doi.org/10.1007/978-1-4939-9012-2_40
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