title: Expression of MicroRNAs in the Eyes of Lewis Rats with Experimental Autoimmune Anterior Uveitis.
abstract: Purpose. This study aimed to determine the dynamic changes of NF-κB-related microRNAs (miRNAs) and cytokines over the course of experimental autoimmune anterior uveitis (EAAU) and elucidate the possible immunopathogenesis. Materials and Methods. Uveitis was induced in Lewis rats using bovine melanin-associated antigen. The inflammatory activity of the anterior chamber was clinically scored, and leukocytes in the aqueous humor were quantified. RNA was extracted from the iris/ciliary bodies and popliteal lymph nodes to reveal the dynamic changes of eight target miRNAs (miR-155-5p, miR-146a-5p, miR-182-5p, miR-183-5p, miR-147b, miR-21-5p, miR-9-3p, and miR-223-3p) and six cytokine mRNAs (IFN-γ, IL-17, IL-12A, IL-1β, IL-6, and IL-10). In situ hybridization of miRNA and enzyme-linked immunosorbent assay quantification of cytokines were performed to confirm the results. Results. Disease activity and leukocyte quantification were maximum at day 15 after immunization. The profiling of miRNA revealed downregulation of miR-146a-5p, miR-155-5p, miR-223-3p, and miR-147b and upregulation of miR-182-5p, miR-183-5p, and miR-9-3p. Cytokine analysis revealed IFN-γ, IL-17, IL-12A, IL-1β, and IL-6 overexpression, with IL-10 downregulation. Conclusions. Dynamic changes of miRNAs were observed over the course of EAAU. By initiating NF-κB signaling, the expressions of downstream cytokines and effector cells from the Th17 and Th1 lineages were sequentially activated, contributing to the disease.
authors.affiliation: Department of Ophthalmology, Far Eastern Memorial Hospital, New Taipei City 22056, Taiwan ; Department of Ophthalmology, National Taiwan University Hospital, Taipei 10002, Taiwan ; National Taiwan University College of Medicine, Taipei 10002, Taiwan.
authors.forename: Yung-Ray
authors.initials: YR
authors.lastname: Hsu
authors.affiliation: Department of Ophthalmology, Far Eastern Memorial Hospital, New Taipei City 22056, Taiwan ; Department of Ophthalmology, National Taiwan University Hospital, Taipei 10002, Taiwan ; National Taiwan University College of Medicine, Taipei 10002, Taiwan.
authors.forename: Shu-Wen
authors.initials: SW
authors.lastname: Chang
authors.affiliation: National Taiwan University College of Medicine, Taipei 10002, Taiwan.
authors.forename: Yu-Cheng
authors.initials: YC
authors.lastname: Lin
authors.affiliation: Department of Ophthalmology, Far Eastern Memorial Hospital, New Taipei City 22056, Taiwan ; Department of Ophthalmology, National Taiwan University Hospital, Taipei 10002, Taiwan ; National Taiwan University College of Medicine, Taipei 10002, Taiwan.
authors.forename: Chang-Hao
authors.initials: CH
authors.lastname: Yang
mesh_terms: D000818:Animals; D001082:Aqueous Humor / Q000276:immunology; D002924:Ciliary Body / Q000276:immunology; D016207:Cytokines / Q000032:analysis; D004195:Disease Models, Animal; D005123:Eye / Q000276:immunology*; D005786:Gene Expression Regulation; D007498:Iris / Q000276:immunology; D035683:MicroRNAs / Q000032:analysis* / Q000235:genetics; D016328:NF-kappa B / Q000502:physiology; D051381:Rats; D011917:Rats, Inbred Lew; D015398:Signal Transduction; D014606:Uveitis, Anterior / Q000209:etiology / Q000276:immunology*
chemical_list: D016207:Cytokines; D035683:MicroRNAs; D016328:NF-kappa B