Narcolepsy-Associated HLA Class I Alleles Implicate Cell-Mediated Cytotoxicity.

Details

Serval ID
serval:BIB_14FD4267AF6D
Type
Article: article from journal or magazin.
Collection
Publications
Title
Narcolepsy-Associated HLA Class I Alleles Implicate Cell-Mediated Cytotoxicity.
Journal
Sleep
Author(s)
Tafti M., Lammers G.J., Dauvilliers Y., Overeem S., Mayer G., Nowak J., Pfister C., Dubois V., Eliaou J.F., Eberhard H.P., Liblau R., Wierzbicka A., Geisler P., Bassetti C.L., Mathis J., Lecendreux M., Khatami R., Heinzer R., Haba-Rubio J., Feketeova E., Baumann C.R., Kutalik Z., Tiercy J.M.
ISSN
1550-9109 (Electronic)
ISSN-L
0161-8105
Publication state
Published
Issued date
2016
Volume
39
Number
3
Pages
581-587
Language
english
Notes
Publication types: Journal Article
Publication Status: epublish
Abstract
STUDY OBJECTIVES: Narcolepsy with cataplexy is tightly associated with the HLA class II allele DQB1*06:02. Evidence indicates a complex contribution of HLA class II genes to narcolepsy susceptibility with a recent independent association with HLA-DPB1. The cause of narcolepsy is supposed be an autoimmune attack against hypocretin-producing neurons. Despite the strong association with HLA class II, there is no evidence for CD4+ T-cell-mediated mechanism in narcolepsy. Since neurons express class I and not class II molecules, the final effector immune cells involved might include class I-restricted CD8+ T-cells.
METHODS: HLA class I (A, B, and C) and II (DQB1) genotypes were analyzed in 944 European narcolepsy with cataplexy patients and in 4,043 control subjects matched by country of origin. All patients and controls were DQB1*06:02 positive and class I associations were conditioned on DQB1 alleles.
RESULTS: HLA-A*11:01 (OR = 1.49 [1.18-1.87] P = 7.0*10(-4)), C*04:01 (OR = 1.34 [1.10-1.63] P = 3.23*10(-3)), and B*35:01 (OR = 1.46 [1.13-1.89] P = 3.64*10(-3)) were associated with susceptibility to narcolepsy. Analysis of polymorphic class I amino-acids revealed even stronger associations with key antigen-binding residues HLA-A-Tyr(9) (OR = 1.32 [1.15-1.52] P = 6.95*10(-5)) and HLA-C-Ser(11) (OR = 1.34 [1.15-1.57] P = 2.43*10(-4)).
CONCLUSIONS: Our findings provide a genetic basis for increased susceptibility to infectious factors or an immune cytotoxic mechanism in narcolepsy, potentially targeting hypocretin neurons.
Pubmed
Open Access
Yes
Create date
24/04/2016 10:36
Last modification date
19/11/2019 7:26
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