Interaction between the gut microbiota and colonic enteroendocrine cells regulates host metabolism.
Nat Metab
; 6(6): 1076-1091, 2024 Jun.
Article
de En
| MEDLINE
| ID: mdl-38777856
ABSTRACT
Nutrient handling is an essential function of the gastrointestinal tract. Hormonal responses of small intestinal enteroendocrine cells (EECs) have been extensively studied but much less is known about the role of colonic EECs in metabolic regulation. To address this core question, we investigated a mouse model deficient in colonic EECs. Here we show that colonic EEC deficiency leads to hyperphagia and obesity. Furthermore, colonic EEC deficiency results in altered microbiota composition and metabolism, which we found through antibiotic treatment, germ-free rederivation and transfer to germ-free recipients, to be both necessary and sufficient for the development of obesity. Moreover, studying stool and blood metabolomes, we show that differential glutamate production by intestinal microbiota corresponds to increased appetite and that colonic glutamate administration can directly increase food intake. These observations shed light on an unanticipated host-microbiota axis in the colon, part of a larger gut-brain axis, that regulates host metabolism and body weight.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Côlon
/
Cellules entéroendocrines
/
Microbiome gastro-intestinal
/
Obésité
Limites:
Animals
Langue:
En
Journal:
Nat Metab
Année:
2024
Type de document:
Article
Pays de publication:
ALEMANHA
/
ALEMANIA
/
DE
/
DEUSTCHLAND
/
GERMANY