Journal
BRAIN, BEHAVIOR, & IMMUNITY - HEALTH
Volume 15, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.bbih.2021.100265
Keywords
Microglia; Transcriptomics; Macaque; Mouse; Human; Zebrafish
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Funding
- Graduate School of Medical Sciences, UMCG
- Dutch MS Research Foundation [16-947]
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The study presents a gene expression profile of purified microglia isolated from the rhesus macaque, intersected with transcriptional programs of microglia from mouse, zebrafish, and human CNS tissues, showing an extensive overlap of genes between macaque and human microglia.
Microglia are tissue-resident macrophages of the central nervous system (CNS), and important for CNS development and homeostasis. In the adult CNS, microglia monitor environmental changes and react to tissue damage, cellular debris, and pathogens. Here, we present a gene expression profile of purified microglia isolated from the rhesus macaque, a non-human primate, that consists of 666 transcripts. The macaque microglia transcriptome was intersected with the transcriptional programs of microglia from mouse, zebrafish, and human CNS tissues, to determine (dis)similarities. This revealed an extensive overlap of 342 genes between the transcriptional profile of macaque and human microglia, and showed that the gene expression profile of zebrafish is most distant when compared to other species. Furthermore, an evolutionair core based on the overlapping gene expression signature from all four species was identified. This study presents a macaque microglia transcriptomics profile, and identifies a gene expression program in microglia that is preserved across species, underscoring their CNS-tailored tissue macrophage functions as innate immune cells with CNS-surveilling properties.
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