TH17 cells contribute to uveitis and scleritis and are expanded by IL-2 and inhibited by IL-27/STAT1

T-helper type 17 cells (T H 17) are implicated in rodent models of immune-mediated diseases. Here we report their involvement in human uveitis and scleritis, and validate our findings in experimental autoimmune uveoretinitis (EAU), a model of uveitis. T H 17 cells were present in human peripheral bl...

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Veröffentlicht in:Nature medicine 2007-06, Vol.13 (6), p.711-718
Hauptverfasser: Amadi-Obi, Ahjoku, Yu, Cheng-Rong, Liu, Xuebin, Mahdi, Rashid M, Clarke, Grace Levy, Nussenblatt, Robert B, Gery, Igal, Lee, Yun Sang, Egwuagu, Charles E
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container_issue 6
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container_title Nature medicine
container_volume 13
creator Amadi-Obi, Ahjoku
Yu, Cheng-Rong
Liu, Xuebin
Mahdi, Rashid M
Clarke, Grace Levy
Nussenblatt, Robert B
Gery, Igal
Lee, Yun Sang
Egwuagu, Charles E
description T-helper type 17 cells (T H 17) are implicated in rodent models of immune-mediated diseases. Here we report their involvement in human uveitis and scleritis, and validate our findings in experimental autoimmune uveoretinitis (EAU), a model of uveitis. T H 17 cells were present in human peripheral blood mononuclear cells (PBMC), and were expanded by interleukin (IL)-2 and inhibited by interferon (IFN)-γ. Their numbers increased during active uveitis and scleritis and decreased following treatment. IL-17 was elevated in EAU and upregulated tumor necrosis factor (TNF)-α in retinal cells, suggesting a mechanism by which T H 17 may contribute to ocular pathology. Furthermore, IL-27 was constitutively expressed in retinal ganglion and photoreceptor cells, was upregulated by IFN-γ and inhibited proliferation of T H 17. These findings suggest that T H 1 cells may mitigate uveitis by antagonizing the T H 17 phenotype through the IFN-γ–mediated induction of IL-27 in target tissue. The finding that IL-2 promotes T H 17 expansion provides explanations for the efficacy of IL-2R antibody therapy in uveitis, and suggests that antagonism of T H 17 by IFN-γ and/or IL-27 could be used for the treatment of chronic inflammation.
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Here we report their involvement in human uveitis and scleritis, and validate our findings in experimental autoimmune uveoretinitis (EAU), a model of uveitis. T H 17 cells were present in human peripheral blood mononuclear cells (PBMC), and were expanded by interleukin (IL)-2 and inhibited by interferon (IFN)-γ. Their numbers increased during active uveitis and scleritis and decreased following treatment. IL-17 was elevated in EAU and upregulated tumor necrosis factor (TNF)-α in retinal cells, suggesting a mechanism by which T H 17 may contribute to ocular pathology. Furthermore, IL-27 was constitutively expressed in retinal ganglion and photoreceptor cells, was upregulated by IFN-γ and inhibited proliferation of T H 17. These findings suggest that T H 1 cells may mitigate uveitis by antagonizing the T H 17 phenotype through the IFN-γ–mediated induction of IL-27 in target tissue. 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source MEDLINE; Springer Nature - Complete Springer Journals; Nature
subjects Animals
Autoimmune diseases
Autoimmune Diseases - immunology
Autoimmune Diseases - metabolism
Autoimmune Diseases - pathology
Biomedical and Life Sciences
Biomedicine
Cancer Research
Cell Proliferation
Cells, Cultured
Coculture Techniques
Eye diseases
Growth Inhibitors - physiology
Humans
Infectious Diseases
Inflammatory diseases
Interleukin-2 - physiology
Interleukins - biosynthesis
Interleukins - genetics
Interleukins - physiology
Metabolic Diseases
Mice
Mice, Inbred C57BL
Molecular Medicine
Neurosciences
Organ Culture Techniques
Pathology
Rodents
Scleritis - immunology
Scleritis - metabolism
Scleritis - pathology
STAT1 Transcription Factor - physiology
T-Lymphocytes, Helper-Inducer - cytology
T-Lymphocytes, Helper-Inducer - immunology
T-Lymphocytes, Helper-Inducer - metabolism
Tumors
Uveitis - immunology
Uveitis - metabolism
Uveitis - pathology
title TH17 cells contribute to uveitis and scleritis and are expanded by IL-2 and inhibited by IL-27/STAT1
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