Single-cell transcriptomics reveals distinct inflammation-induced microglia signatures.

Abstract:

:Microglia are specialized parenchymal-resident phagocytes of the central nervous system (CNS) that actively support, defend and modulate the neural environment. Dysfunctional microglial responses are thought to worsen CNS diseases; nevertheless, their impact during neuroinflammatory processes remains largely obscure. Here, using a combination of single-cell RNA sequencing and multicolour flow cytometry, we comprehensively profile microglia in the brain of lipopolysaccharide (LPS)-injected mice. By excluding the contribution of other immune CNS-resident and peripheral cells, we show that microglia isolated from LPS-injected mice display a global downregulation of their homeostatic signature together with an upregulation of inflammatory genes. Notably, we identify distinct microglial activated profiles under inflammatory conditions, which greatly differ from neurodegenerative disease-associated profiles. These results provide insights into microglial heterogeneity and establish a resource for the identification of specific phenotypes in CNS disorders, such as neuroinflammatory and neurodegenerative diseases.

journal_name

EMBO Rep

journal_title

EMBO reports

authors

Sousa C,Golebiewska A,Poovathingal SK,Kaoma T,Pires-Afonso Y,Martina S,Coowar D,Azuaje F,Skupin A,Balling R,Biber K,Niclou SP,Michelucci A

doi

10.15252/embr.201846171

subject

Has Abstract

pub_date

2018-11-01 00:00:00

issue

11

eissn

1469-221X

issn

1469-3178

pii

embr.201846171

journal_volume

19

pub_type

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