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CD8+ T cells from patients with narcolepsy and healthy controls recognize hypocretin neuron-specific antigens

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Narcolepsy Type 1 (NT1) is a neurological sleep disorder, characterized by the loss of hypocretin/orexin signaling in the brain. Genetic, epidemiological and experimental data support the hypothesis that NT1 is a T-cell-mediated autoimmune disease targeting the hypocretin producing neurons. While autoreactive CD4+ T cells have been detected in patients, CD8+ T cells have only been examined to a minor extent. Here we detect CD8+ T cells specific toward narcolepsy-relevant peptides presented primarily by NT1-associated HLA types in the blood of 20 patients with NT1 as well as in 52 healthy controls, using peptide-MHC-I multimers labeled with DNA barcodes. In healthy controls carrying the disease-predisposing HLA-DQB1*06:02 allele, the frequency of autoreactive CD8+ T cells was lower as compared with both NT1 patients and HLA-DQB1*06:02-negative healthy individuals. These findings suggest that a certain level of CD8+ T-cell reactivity combined with HLA-DQB1*06:02 expression is important for NT1 development.

Original languageEnglish
Article number837
JournalNature Communications
Volume10
Issue number1
Pages (from-to)837
ISSN2041-1723
DOIs
Publication statusPublished - 1 Dec 2019

    Research areas

  • Adolescent, Adult, CD8-Positive T-Lymphocytes/immunology, Case-Control Studies, Child, Female, Genetic Predisposition to Disease, HLA-DQ beta-Chains/genetics, Humans, Male, Middle Aged, Narcolepsy/genetics, Neurons/metabolism, Orexins/immunology, Peptides/immunology

ID: 58007203