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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Pflugfelder, Stephen C. Zheng, Xiaofen Li, De-Quan de Paiva, Cintia S. Farley, William J. |
| Description | Country affiliation: United States Author Affiliation: Zheng X ( Department of Ophthalmology, Baylor College of Medicine, Ocular Surface Center, Cullen Eye Institute, Houston, Texas 77030, USA.) |
| Abstract | PURPOSE: To explore the phenomenon that corneal and conjunctival tissues subjected to desiccating stress (DS) promote Th17 differentiation by stimulating the production of Th17-inducing cytokines through a dendritic cell (DC)-mediated pathway. METHODS: Experimental dry eye was created by subjecting C57BL/6 mice to desiccating environmental stress. Corneal and conjunctival explants from dry eye or control mice were cocultured with DCs for 24 hours before CD4(+) T cells were added for an additional 4 to 7 days. Expression of Th17-associated genes in the cornea, conjunctiva, DCs, and CD4(+) T cells was evaluated by real-time PCR. Cytokine concentrations in coculture supernatants were measured by immunobead assay. IL-17-producing T cells were identified by ELISPOT bioassay. RESULTS: Higher levels of IL-17A, TGF-beta1, TGF-beta2, IL-6, IL-23, and IL-1beta mRNA transcripts and TGF-beta1, IL-6, and IL-1beta protein were observed in corneal epithelium and conjunctiva from dry eye mice. DCs cocultured with epithelial explants from dry eye mice for 2 days produced higher levels of TGF-beta1, IL-6, IL-23, and IL-1beta mRNA transcripts and of TGF-beta1, IL-6, and IL-1beta protein. CD4(+) T cells cocultured with DCs and epithelial explants from dry eye mice expressed increased levels of IL-17A, IL-17F, IL-22, CCL-20, and retinoic acid receptor-related orphan receptor-gammat mRNA transcripts and increased IL-17A protein and number of IL-17-producing T cells (Th17 cells). CONCLUSIONS: These findings demonstrate that DS creates an environment on the ocular surface that stimulates the production of Th17-inducing cytokines by corneal and conjunctival epithelia that promote Th17 differentiation through a dendritic cell-mediated pathway. |
| ISSN | 01460404 |
| e-ISSN | 15525783 |
| DOI | 10.1167/iovs.09-3838 |
| Journal | Investigative Opthalmology & Visual Science |
| Issue Number | 6 |
| Volume Number | 51 |
| Language | English |
| Publisher | Association for Research in Vision and Ophthalmology |
| Publisher Date | 2010-06-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Cell Differentiation Conjunctiva Metabolism Cornea Dendritic Cells Physiology Dry Eye Syndromes Interleukin-17 Genetics T-lymphocytes, Helper-inducer Immunology Animals Bone Marrow Cells Cd4-positive T-lymphocytes Coculture Techniques Desiccation Disease Models, Animal Chemically Induced Enzyme-linked Immunosorbent Assay Epithelial Cells Flow Cytometry Gene Expression Immunoenzyme Techniques Mice Mice, Inbred C57bl Reverse Transcriptase Polymerase Chain Reaction Scopolamine Hydrobromide Toxicity Research Support, N.i.h., Extramural Research Support, Non-u.s. Gov't Discipline Ophthalmology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ophthalmology Sensory Systems Cellular and Molecular Neuroscience |
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