Phagosomal removal of fungal melanin reprograms macrophage metabolism to promote antifungal immunity.
Animals
Aspergillus fumigatus
/ immunology
Calcium Signaling
Glucose
/ metabolism
Glycolysis
Humans
Hypoxia-Inducible Factor 1, alpha Subunit
/ metabolism
Immunity
Lactates
/ metabolism
Macrophages
/ immunology
Melanins
/ metabolism
Mice, Inbred C57BL
Phagosomes
/ metabolism
TOR Serine-Threonine Kinases
/ metabolism
Transcriptome
/ genetics
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
08 05 2020
08 05 2020
Historique:
received:
19
07
2019
accepted:
14
04
2020
entrez:
10
5
2020
pubmed:
10
5
2020
medline:
6
8
2020
Statut:
epublish
Résumé
In response to infection, macrophages adapt their metabolism rapidly to enhance glycolysis and fuel specialized antimicrobial effector functions. Here we show that fungal melanin is an essential molecule required for the metabolic rewiring of macrophages during infection with the fungal pathogen Aspergillus fumigatus. Using pharmacological and genetic tools, we reveal a molecular link between calcium sequestration by melanin inside the phagosome and induction of glycolysis required for efficient innate immune responses. By remodeling the intracellular calcium machinery and impairing signaling via calmodulin, melanin drives an immunometabolic signaling axis towards glycolysis with activation of hypoxia-inducible factor 1 subunit alpha (HIF-1α) and phagosomal recruitment of mammalian target of rapamycin (mTOR). These data demonstrate a pivotal mechanism in the immunometabolic regulation of macrophages during fungal infection and highlight the metabolic repurposing of immune cells as a potential therapeutic strategy.
Identifiants
pubmed: 32385235
doi: 10.1038/s41467-020-16120-z
pii: 10.1038/s41467-020-16120-z
pmc: PMC7210971
doi:
Substances chimiques
Hypoxia-Inducible Factor 1, alpha Subunit
0
Lactates
0
Melanins
0
TOR Serine-Threonine Kinases
EC 2.7.11.1
Glucose
IY9XDZ35W2
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
2282Subventions
Organisme : Medical Research Council
ID : MR/N006364/2
Pays : United Kingdom
Organisme : Wellcome Trust
ID : 102705
Pays : United Kingdom
Organisme : Medical Research Council
ID : MR/N006364/1
Pays : United Kingdom
Commentaires et corrections
Type : CommentIn
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