MicroRNA-210 overexpression promotes psoriasis-like inflammation by inducing Th1 and Th17 cell differentiation
Ruifang Wu, … , Ming Zhao, Qianjin Lu
Ruifang Wu, … , Ming Zhao, Qianjin Lu
Published May 14, 2018
Citation Information: J Clin Invest. 2018;128(6):2551-2568. https://doi.org/10.1172/JCI97426.
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Research Article Autoimmunity Dermatology

MicroRNA-210 overexpression promotes psoriasis-like inflammation by inducing Th1 and Th17 cell differentiation

Abstract

Immune imbalance of T lymphocyte subsets is a hallmark of psoriasis, but the molecular mechanisms underlying this aspect of psoriasis pathology are poorly understood. Here, we report that microRNA-210 (miR-210), a miR that is highly expressed in both psoriasis patients and mouse models, induces helper T (Th) 17 and Th1 cell differentiation but inhibits Th2 differentiation through repressing STAT6 and LYN expression, contributing to several aspects of the immune imbalance in psoriasis. Both miR-210 ablation in mice and inhibition of miR-210 by intradermal injection of antagomir-210 blocked the immune imbalance and the development of psoriasis-like inflammation in an imiquimod-induced or IL-23–induced psoriasis-like mouse model. We further showed that TGF-β and IL-23 enhance miR-210 expression by inducing HIF-1α, which recruits P300 and promotes histone H3 acetylation in the miR-210 promoter region. Our results reveal a crucial role for miR-210 in the immune imbalance of T lymphocyte subsets in psoriasis and suggest a potential therapeutic avenue.

Authors

Ruifang Wu, Jinrong Zeng, Jin Yuan, Xinjie Deng, Yi Huang, Lina Chen, Peng Zhang, Huan Feng, Zixin Liu, Zijun Wang, Xiaofei Gao, Haijing Wu, Honglin Wang, Yuwen Su, Ming Zhao, Qianjin Lu

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Figure 7

STAT6 and LYN are required for miR-210–induced effects.

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STAT6 and LYN are required for miR-210–induced effects. (A and B) Normal...
(A and B) Normal human CD4+ T cells were transfected with STAT6 siRNAs and overexpression plasmid (A, n = 3) or LYN siRNAs and overexpression plasmid (B, n = 3) separately for 48 hours. STAT6 and LYN protein levels (left panel), and the mRNA levels of IL17A, IL17F, IFNG, and IL4 (middle and right panels) were detected in transfected cells. (C and D) Normal human CD4+ T cells were transfected with agomir-210 or agomir-NC, and after 24 hours, the STAT6 overexpression plasmid or plasmid control (C, n = 3) and LYN overexpression plasmid or plasmid control (D, n = 3) were transfected into cells. Then, cells were collected to detect the protein levels of STAT6 or LYN (left panel) and the mRNA levels of IL17A, IL17F, IFNG, and IL4 (right panel) at 48 hours after transfection. Similar results were obtained from 3 independent experiments. Data represent the mean ± SEM. *P < 0.05, **P < 0.01, ***P < 0.001. NS, not significant. Two-tailed unpaired Student’s t test (A and B) or 1-way ANOVA with Bonferroni’s post hoc test (C and D) was used.