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miR-27a and miR-214 exert opposite regulatory roles in Th17 differentiation via mediating different signaling pathways in peripheral blood CD4+ T lymphocytes of patients with relapsing–remitting multiple sclerosis

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Abstract

Multiple sclerosis (MS) is one of the most prevalent autoimmune diseases, which involves the central nervous system. In this illness, Treg/Th17 cell imbalance causes the defect. Several studies revealed that T helper 17 (Th17) cells play a crucial role in pathogenesis, inflammation, and autoimmunity of several autoimmune diseases such as MS. In the present study, we assessed transcript levels of miR-27a and miR-214, in purified CD4+ T cells of MS patients, during relapsing and remitting phases in inducing differentiation of T naïve cells to Th17 cells. Forty RR-MS patient samples including those in relapsing (n = 20) and remitting (n = 20) phases were participated in this study. In addition, transcript levels of IL-17A, RORγt, IL-23R, Foxp3, and TGF-β in purified CD4+ T cells of patients in relapsing and remitting phases of RRMS patients were compared to healthy controls. Expression levels of miR-27a and miR-214 were measured by RT-qPCR and compared to healthy control group (n = 10). Data indicated upregulation of miR27a in relapsing phase of multiple sclerosis compared to remitting phase and healthy volunteers while miR-214 downregulated in relapsing phase of MS compared to remitting phase and healthy volunteers. In silico studies demonstrated pathways which miR-27a and miR-214 could effect on CD4+ T cell lineage fate including TGF-β and mTOR signaling, respectively. Our data suggest that miR-27a may probably inhibit negative regulators of Th17 cell differentiation, thus promoting its differentiation while miR-214 has an adverse effect.

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Acknowledgments

We thank the blood donors, Al-Zahra Hospital staffs, and our colleagues especially the MS research team in Royan Institute for their helpful participation and comments. All authors support submission to this journal.

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Correspondence to Ali Bidmeshki Pour, Kamran Ghaedi or Mohammad Hossein Nasr-Esfahani.

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Fig. S1

Real-time PCR profiles and gel electrophoresis patterns. a. b. c Real-time PCR profiles for miR-27a, miR-214, and RNU48. d Real-time PCR products for miR-27a, miR-214, and RNU48 were run on 12 % polyacrylamide gel to evaluate the specificity of primers used (M 50 bp) (GIF 60 kb)

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Ahmadian-Elmi, M., Bidmeshki Pour, A., Naghavian, R. et al. miR-27a and miR-214 exert opposite regulatory roles in Th17 differentiation via mediating different signaling pathways in peripheral blood CD4+ T lymphocytes of patients with relapsing–remitting multiple sclerosis. Immunogenetics 68, 43–54 (2016). https://doi.org/10.1007/s00251-015-0881-y

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  • DOI: https://doi.org/10.1007/s00251-015-0881-y

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