The Intermucosal Connection between the Mouth and Gut in Commensal Pathobiont-Driven Colitis.
Cell
; 182(2): 447-462.e14, 2020 07 23.
Article
in En
| MEDLINE
| ID: mdl-32758418
ABSTRACT
The precise mechanism by which oral infection contributes to the pathogenesis of extra-oral diseases remains unclear. Here, we report that periodontal inflammation exacerbates gut inflammation in vivo. Periodontitis leads to expansion of oral pathobionts, including Klebsiella and Enterobacter species, in the oral cavity. Amassed oral pathobionts are ingested and translocate to the gut, where they activate the inflammasome in colonic mononuclear phagocytes, triggering inflammation. In parallel, periodontitis results in generation of oral pathobiont-reactive Th17 cells in the oral cavity. Oral pathobiont-reactive Th17 cells are imprinted with gut tropism and migrate to the inflamed gut. When in the gut, Th17 cells of oral origin can be activated by translocated oral pathobionts and cause development of colitis, but they are not activated by gut-resident microbes. Thus, oral inflammation, such as periodontitis, exacerbates gut inflammation by supplying the gut with both colitogenic pathobionts and pathogenic T cells.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Colitis
/
Enterobacter
/
Gastrointestinal Microbiome
/
Klebsiella
/
Mouth
Type of study:
Prognostic_studies
Limits:
Animals
Language:
En
Journal:
Cell
Year:
2020
Type:
Article
Affiliation country:
United States