Relationship between Multiple Sclerosis-Associated IL2RA Risk Allele Variants and Circulating T Cell Phenotypes in Healthy Genotype-Selected Controls
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- cells-08-00634
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Single nucleotide polymorphisms (SNPs) in or near the IL2RA gene, that encodes the interleukin-2 (IL-2) receptor α (CD25), are associated with increased risk of immune-mediated diseases including multiple sclerosis (MS). We investigated how the MS-associated IL2RA SNPs rs2104286 and rs11256593 are associated with CD25 expression on T cells ex vivo by multiparameter flow cytometry in paired genotype-selected healthy controls. We observed that MS-associated IL2RA SNPs rs2104286 and rs11256593 are associated with expression of CD25 in CD4+ but not CD8+ T cells. In CD4+ T cells, carriers of the risk genotype had a reduced frequency of CD25+ TFH1 cells (p = 0.001) and an increased frequency of CD25+ recent thymic emigrant cells (p = 0.006). Furthermore, carriers of the risk genotype had a reduced surface expression of CD25 in post-thymic expanded CD4+ T cells (CD31-CD45RA+), CD39+ TReg cells and in several non-follicular memory subsets. Our study found novel associations of MS-associated IL2RA SNPs on expression of CD25 in CD4+ T cell subsets. Insight into the associations of MS-associated IL2RA SNPs, as these new findings provide, offers a better understanding of CD25 variation in the immune system and can lead to new insights into how MS-associated SNPs contribute to development of MS.
Original language | English |
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Article number | 634 |
Journal | Cells |
Volume | 8 |
Issue number | 6 |
Number of pages | 19 |
ISSN | 2073-4409 |
DOIs | |
Publication status | Published - 2019 |
- Adult, Aged, Alleles, Antigens, CD/metabolism, CD4-Positive T-Lymphocytes/immunology, CD8-Positive T-Lymphocytes/immunology, Case-Control Studies, Female, Genetic Predisposition to Disease, Genetic Variation, Genotype, Humans, Immunologic Memory, Interleukin-2 Receptor alpha Subunit/genetics, Male, Middle Aged, Multiple Sclerosis/genetics, Phenotype, Risk Factors, T-Lymphocytes/immunology, Young Adult
Research areas
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