Abstract:
:CD26 displays variable levels between effector (TH17 ≫ TH1 > TH2 > Treg) and naïve/memory (memory > naïve) CD4+ T lymphocytes. Besides, IL-6/IL-6R is associated with TH17-differentiation and asthma severity. Allergic/atopic asthma (AA) is dominated by TH2 responses, while TH17 immunity might either modulate the TH2-dependent inflammation in AA or be an important mechanism boosting non-allergic asthma (NAA). Therefore, in this work we have compared the expression of CD26 and CD126 (IL-6Rα) in lymphocytes from different groups of donors: allergic (AA) and non-allergic (NAA) asthma, rhinitis, and healthy subjects. For this purpose, flow cytometry, haematological/biochemical, and in vitro proliferation assays were performed. Our results show a strong CD26-CD126 correlation and an over-representation of CD26- subsets with a highly-differentiated effector phenotype in AA (CD4+CD26-/low T cells) and NAA (CD4-CD26- γδ-T cells). In addition, we found that circulating levels of CD26 (sCD26) were reduced in both AA and NAA, while loss of CD126 expression on different leukocytes correlated with higher disease severity. Finally, selective inhibition of CD26-mRNA translation led to enhanced T cell proliferation in vitro. These findings support that CD26 down-modulation could play a role in facilitating the expansion of highly-differentiated effector T cell subsets in asthma.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Nieto-Fontarigo JJ,Salgado FJ,San-José ME,Cruz MJ,Valdés L,Pérez-Díaz A,Arias P,Nogueira M,González-Barcala FJdoi
10.1038/s41598-019-43622-8subject
Has Abstractpub_date
2019-05-17 00:00:00pages
7556issue
1issn
2045-2322pii
10.1038/s41598-019-43622-8journal_volume
9pub_type
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