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Published on: October 14, 2021
Shared T cell receptor chains in blood memory CD4+ T cells of narcolepsy type 1 patients
Eduardo Beltrán1, Xuan-Hung Nguyen2, Clémence Quériault3
1Institute of Clinical Neuroimmunology, Biomedical Center and Hospital of the Ludwig-Maximilians-University Munich, Munich, Germany.
Abstract:
Convergent evidence points to the involvement of T cells in the pathogenesis of narcolepsy type 1 (NT1). Here, we hypothesized that expanded disease-specific T cell clones could be detected in the blood of NT1 patients. We compared the TCR repertoire of circulating antigen-experienced CD4+ and CD8+ T cells from 13 recently diagnosed NT1 patients and 11 age-, sex-, and HLA-DQB1*06:02-matched healthy controls. We detected a bias in the usage of TRAV3 and TRAV8 families, with public CDR3α motifs only present in CD4+ T cells from patients with NT1. These findings may offer a unique tool to identify disease-relevant antigens.
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