Metabolic and Innate Immune Cues Merge into a Specific Inflammatory Response via the UPR.
Animals
Cellular Microenvironment
/ genetics
Citric Acid Cycle
/ genetics
Dendritic Cells
/ immunology
Hexokinase
/ genetics
Immunity, Innate
Inflammation
/ genetics
Mice
Mice, Knockout
Mitochondria
/ genetics
Reactive Oxygen Species
/ immunology
Toll-Like Receptors
/ genetics
Unfolded Protein Response
/ genetics
X-Box Binding Protein 1
/ genetics
IL-23
UPR
dendritic cells
fatty acids
glycolysis
hexokinase
innate immunity
metabolic reprogramming
mtROS
psoriasis
Journal
Cell
ISSN: 1097-4172
Titre abrégé: Cell
Pays: United States
ID NLM: 0413066
Informations de publication
Date de publication:
16 05 2019
16 05 2019
Historique:
received:
10
04
2018
revised:
27
01
2019
accepted:
08
03
2019
pubmed:
30
4
2019
medline:
12
2
2020
entrez:
30
4
2019
Statut:
ppublish
Résumé
Innate immune responses are intricately linked with intracellular metabolism of myeloid cells. Toll-like receptor (TLR) stimulation shifts intracellular metabolism toward glycolysis, while anti-inflammatory signals depend on enhanced mitochondrial respiration. How exogenous metabolic signals affect the immune response is unknown. We demonstrate that TLR-dependent responses of dendritic cells (DCs) are exacerbated by a high-fatty-acid (FA) metabolic environment. FAs suppress the TLR-induced hexokinase activity and perturb tricarboxylic acid cycle metabolism. These metabolic changes enhance mitochondrial reactive oxygen species (mtROS) production and, in turn, the unfolded protein response (UPR), leading to a distinct transcriptomic signature with IL-23 as hallmark. Interestingly, chemical or genetic suppression of glycolysis was sufficient to induce this specific immune response. Conversely, reducing mtROS production or DC-specific deficiency in XBP1 attenuated IL-23 expression and skin inflammation in an IL-23-dependent model of psoriasis. Thus, fine-tuning of innate immunity depends on optimization of metabolic demands and minimization of mtROS-induced UPR.
Identifiants
pubmed: 31031005
pii: S0092-8674(19)30280-6
doi: 10.1016/j.cell.2019.03.018
pii:
doi:
Substances chimiques
Reactive Oxygen Species
0
Toll-Like Receptors
0
X-Box Binding Protein 1
0
Xbp1 protein, mouse
0
Hexokinase
EC 2.7.1.1
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1201-1216.e19Subventions
Organisme : Versus Arthritis
ID : 19867
Pays : United Kingdom
Organisme : Cancer Research UK
ID : C29967/A26787
Pays : United Kingdom
Organisme : Cancer Research UK
ID : C29967/A14633
Pays : United Kingdom
Organisme : Medical Research Council
ID : MR/P010008/2
Pays : United Kingdom
Organisme : Medical Research Council
ID : MR/M023230/1
Pays : United Kingdom
Organisme : Medical Research Council
ID : MR/P010008/1
Pays : United Kingdom
Commentaires et corrections
Type : CommentIn
Type : ErratumIn
Informations de copyright
Copyright © 2019 Elsevier Inc. All rights reserved.