Osteopontin associates with brain TRM-cell transcriptome and compartmentalization in donors with and without multiple sclerosis

Cheng-Chih Hsiao, Hendrik J Engelenburg, Aldo Jongejan, Jing Zhu, Baohong Zhang, Michael Mingueneau, Perry D Moerland, Inge Huitinga, Joost Smolders, Jörg Hamann

Research output: Contribution to journal/periodicalArticleScientificpeer-review

8 Citations (Scopus)
49 Downloads (Pure)

Abstract

The human brain is populated by perivascular T cells with a tissue-resident memory T (TRM)-cell phenotype, which in multiple sclerosis (MS) associate with lesions. We investigated the transcriptional and functional profile of freshly isolated T cells from white and gray matter. RNA sequencing of CD8+ and CD4+ CD69+ T cells revealed TRM-cell signatures. Notably, gene expression hardly differed between lesional and normal-appearing white matter T cells in MS brains. Genes up-regulated in brain TRM cells were MS4A1 (CD20) and SPP1 (osteopontin, OPN). OPN is also abundantly expressed by microglia and has been shown to inhibit T cell activity. In line with their parenchymal localization and the increased presence of OPN in active MS lesions, we noticed a reduced production of inflammatory cytokines IL-2, TNF, and IFNγ by lesion-derived CD8+ and CD4+ T cells ex vivo. Our study reports traits of brain TRM cells and reveals their tight control in MS lesions.

Original languageEnglish
Pages (from-to)105785
JournaliScience
Volume26
Issue number1
DOIs
Publication statusPublished - 01 Jan 2023

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