Ectopic colonization of oral bacteria in the intestine drives T(H)1 cell induction and inflammation.

Ectopic colonization of oral bacteria in the intestine drives T(H)1 cell induction and inflammation.
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DOI:
10.1126/science.aan4526
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发表时间:
2017-10-20
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Honda K
Honda K
中科院分区:
其他
文献类型:
--
作者:
Atarashi K;Suda W;Luo C;Kawaguchi T;Motoo I;Narushima S;Kiguchi Y;Yasuma K;Watanabe E;Tanoue T;Thaiss CA;Sato M;Toyooka K;Said HS;Yamagami H;Rice SA;Gevers D;Johnson RC;Segre JA;Chen K;Kolls JK;Elinav E;Morita H;Xavier RJ;Hattori M;Honda K

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Intestinal colonization by bacteria of oral origin has been correlated with several negative health outcomes, including inflammatory bowel disease. However, a causal role of oral bacteria ectopically colonizing the intestine remains unclear. Using gnotobiotic techniques, we show that strains of Klebsiella spp. isolated from the salivary microbiota are strong inducers of T helper 1 (TH1) cells when they colonize in the gut. These Klebsiella strains are resistant to multiple antibiotics, tend to colonize when the intestinal microbiota is dysbiotic, and elicit a severe gut inflammation in the context of a genetically susceptible host. Our findings suggest that the oral cavity may serve as a reservoir for potential intestinal pathobionts that can exacerbate intestinal disease.
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