Rapid phagosome isolation enables unbiased multiomic analysis of human microglial phagosomes.
glioblastoma
human pluripotent stem cells
metabolomics
microglia
organelle
phagocytosis
phagosome
proteomics
quinolinic acid
synaptic pruning
Journal
Immunity
ISSN: 1097-4180
Titre abrégé: Immunity
Pays: United States
ID NLM: 9432918
Informations de publication
Date de publication:
07 Aug 2024
07 Aug 2024
Historique:
received:
17
09
2023
revised:
25
01
2024
accepted:
19
07
2024
medline:
17
8
2024
pubmed:
17
8
2024
entrez:
16
8
2024
Statut:
aheadofprint
Résumé
Microglia are the resident macrophages of the central nervous system (CNS). Their phagocytic activity is central during brain development and homeostasis-and in a plethora of brain pathologies. However, little is known about the composition, dynamics, and function of human microglial phagosomes under homeostatic and pathological conditions. Here, we developed a method for rapid isolation of pure and intact phagosomes from human pluripotent stem cell-derived microglia under various in vitro conditions, and from human brain biopsies, for unbiased multiomic analysis. Phagosome profiling revealed that microglial phagosomes were equipped to sense minute changes in their environment and were highly dynamic. We detected proteins involved in synapse homeostasis, or implicated in brain pathologies, and identified the phagosome as the site where quinolinic acid was stored and metabolized for de novo nicotinamide adenine dinucleotide (NAD
Identifiants
pubmed: 39151426
pii: S1074-7613(24)00368-6
doi: 10.1016/j.immuni.2024.07.019
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 R.J. is an advisor/co-founder of Fate Therapeutics and Fulcrum Therapeutics.