Community-wide transcriptome of the oral microbiome in subjects with and without periodontitis

生物 口腔微生物群 微生物群 转录组 牙周炎 基因组 人体微生物群 疾病 毒力 基因 微生物学 遗传学 基因表达 病理 医学 内科学
作者
Ana E. Duran‐Pinedo,Tsute Chen,Ricardo Teles,Jacqueline R. Starr,Xiaoshan Wang,Keerthana Krishnan,Jorge Frias‐Lopez
出处
期刊:The ISME Journal [Springer Nature]
卷期号:8 (8): 1659-1672 被引量:283
标识
DOI:10.1038/ismej.2014.23
摘要

Despite increasing knowledge on phylogenetic composition of the human microbiome, our understanding of the in situ activities of the organisms in the community and their interactions with each other and with the environment remains limited. Characterizing gene expression profiles of the human microbiome is essential for linking the role of different members of the bacterial communities in health and disease. The oral microbiome is one of the most complex microbial communities in the human body and under certain circumstances, not completely understood, the healthy microbial community undergoes a transformation toward a pathogenic state that gives rise to periodontitis, a polymicrobial inflammatory disease. We report here the in situ genome-wide transcriptome of the subgingival microbiome in six periodontally healthy individuals and seven individuals with periodontitis. The overall picture of metabolic activities showed that iron acquisition, lipopolysaccharide synthesis and flagellar synthesis were major activities defining disease. Unexpectedly, the vast majority of virulence factors upregulated in subjects with periodontitis came from organisms that are not considered major periodontal pathogens. One of the organisms whose gene expression profile was characterized was the uncultured candidate division TM7, showing an upregulation of putative virulence factors in the diseased community. These data enhance understanding of the core activities that are characteristic of periodontal disease as well as the role that individual organisms in the subgingival community play in periodontitis.
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