A metabolic switch orchestrated by IL-18 and the cyclic dinucleotide cGAMP programs intestinal tolerance.
IL-18
SLC12A3
bistable circuit
cGAMP
fatty acid oxidation
immunometabolism
intestinal tolerance
macrophage
metabolic reprogramming
metabolic switch
Journal
Immunity
ISSN: 1097-4180
Titre abrégé: Immunity
Pays: United States
ID NLM: 9432918
Informations de publication
Date de publication:
19 Jun 2024
19 Jun 2024
Historique:
received:
19
10
2023
revised:
10
03
2024
accepted:
04
06
2024
medline:
22
6
2024
pubmed:
22
6
2024
entrez:
21
6
2024
Statut:
aheadofprint
Résumé
Tissues are exposed to diverse inflammatory challenges that shape future inflammatory responses. While cellular metabolism regulates immune function, how metabolism programs and stabilizes immune states within tissues and tunes susceptibility to inflammation is poorly understood. Here, we describe an innate immune metabolic switch that programs long-term intestinal tolerance. Intestinal interleukin-18 (IL-18) stimulation elicited tolerogenic macrophages by preventing their proinflammatory glycolytic polarization via metabolic reprogramming to fatty acid oxidation (FAO). FAO reprogramming was triggered by IL-18 activation of SLC12A3 (NCC), leading to sodium influx, release of mitochondrial DNA, and activation of stimulator of interferon genes (STING). FAO was maintained in macrophages by a bistable switch that encoded memory of IL-18 stimulation and by intercellular positive feedback that sustained the production of macrophage-derived 2'3'-cyclic GMP-AMP (cGAMP) and epithelial-derived IL-18. Thus, a tissue-reinforced metabolic switch encodes durable immune tolerance in the gut and may enable reconstructing compromised immune tolerance in chronic inflammation.
Identifiants
pubmed: 38906145
pii: S1074-7613(24)00305-4
doi: 10.1016/j.immuni.2024.06.001
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
Copyright © 2024 Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of interests The authors declare no competing financial interests.