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Functional expression of dental plaque microbiota
Scott N Peterson1, Tobias Meissner2, Andrew I Su2
1Infectious Diseases, J. Craig Venter Institute Rockville, MD, USA.
Frontiers in Cellular and Infection Microbiology
|September 2, 2014
Summary
Understanding dental caries (tooth decay) is crucial. This study analyzed gene expression in dental plaque, identifying key microbial functions and networks, offering new insights into oral health and disease. Keywords: dental caries, gene expression, dental plaque, oral health.
Area of Science:
- Microbiology
- Genomics
- Oral Health Research
Background:
- Dental caries is a global public health issue, challenging to predict due to microbial variability.
- Identifying microbial species linked to dental health or disease is complex.
- Dental plaque microbiota plays a critical role in oral health outcomes.
Purpose of the Study:
- To analyze global gene expression of dental plaque microbiota.
- To define a functional core microbiota associated with dental caries.
- To investigate the influence of host genetics and environment on the oral microbiome.
Main Methods:
- RNA-sequencing (RNA-Seq) was used for global gene expression analysis.
- Dental plaque microbiota from 19 twin pairs (concordant/discordant for caries) were studied.
- Correlation analysis and functional role categorization were applied to transcription data.
Main Results:
- A functional core microbiota of nearly 60 species was defined.
- Gene expression patterns provided insights into host genetics, environmental factors, and caries phenotype.
- Functional networks were identified, suggesting environmental co-selection of microbial groups.
- Dominant microbial functions include sugar metabolism and stress response (acid/oxidative).
Conclusions:
- Deep sequencing of expressed transcripts offers a comprehensive view of dental plaque microbiota function.
- This research expands understanding of the functional expression within oral biofilms.
- Findings contribute to predicting dental caries and identifying protective microbial factors.
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