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Twin study identifies early immunological and metabolic dysregulation of CD8 <sup>+</sup> T cells in multiple sclerosis

Abstract (Expand)

Multiple sclerosis (MS) is an inflammatory neurological disease of the central nervous system with a subclinical phase preceding frank neuroinflammation. CD8 + T cells are abundant within MS lesions, …ndant within MS lesions, but their potential role in disease pathology remains unclear. Using high-throughput single-cell RNA sequencing and single-cell T cell receptor analysis, we compared CD8 + T cell clones from the blood and cerebrospinal fluid (CSF) of monozygotic twin pairs in which the cotwin had either no or subclinical neuroinflammation (SCNI). We identified peripheral MS-associated immunological and metabolic alterations indicative of an enhanced migratory, proinflammatory, and activated CD8 + T cell phenotype, which was also evident in cotwins with SCNI and in an independent validation cohort of people with MS. Together, our in-depth single-cell analysis indicates a disease-driving proinflammatory role of infiltrating CD8 + T cells and identifies potential immunological and metabolic therapeutic targets in both prodromal and definitive stages of the disease.

Authors: Vladyslav Kavaka, Luisa Mutschler, Clara de la Rosa del Val, Klara Eglseer, Ana M. Gómez Martínez, Andrea Flierl-Hecht, Birgit Ertl-Wagner, Daniel Keeser, Martin Mortazavi, Klaus Seelos, Hanna Zimmermann, Jürgen Haas, Brigitte Wildemann, Tania Kümpfel, Klaus Dornmair, Thomas Korn, Reinhard Hohlfeld, Martin Kerschensteiner, Lisa Ann Gerdes, Eduardo Beltrán

Date Published: 27th Sep 2024

Publication Type: Journal Article

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