Role of IL-22- and TNF-α-producing Th22 cells in uveitis patients with Behcet's disease.
J Immunol
; 190(11): 5799-808, 2013 Jun 01.
Article
in En
| MEDLINE
| ID: mdl-23630362
ABSTRACT
Behçet's disease is a systemic inflammatory disorder with recurrent episodes of oral ulceration, skin lesions, genital ulceration, and intraocular inflammation (uveitis). The intraocular inflammation is strictly associated with Th effector cells. IL-22 is a member of the IL-10 cytokine family that is involved in inflammatory processes. Recently, Th22 cells were identified as a Th cell population that produces IL-22 and TNF-α and are distinct from Th1, Th2, and Th17 cells. In this study, we established Th22-type T cell clones from ocular samples taken from Behçet's disease patients with active uveitis. These clones produced large amounts of IL-22 and TNF-α but not the Th1 cytokine IFN-γ and the Th17 cytokine IL-17. CD4(+) T cells from the peripheral blood of Behçet's disease patients differentiated into Th22 cells in the presence of IL-6 and TNF-α in vitro. The polarized Th22 cell lines produced large amounts of IL-22, and the polarized Th1 and Th17 cells also produced IL-22. In the presence of anti-TNF-α- and anti-IL-6-blocking Abs, Behçet's disease Th22-type T cells failed to produce IL-22. In addition, infliximab-pretreated Th22 cells and Th22-type ocular T cells produced less IL-22 and TNF-α. Moreover, IL-22-producing T cells were isolated from mice with experimental autoimmune uveitis, an animal model of Behçet's disease, and the intraocular T cells from uveitis models produced large amounts of IL-22 in the presence of retinal Ags. Our results suggest that inflammatory cytokines IL-22 and TNF-α may play a key role in the ocular immune response in Behçet's disease.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Uveitis
/
Behcet Syndrome
/
Interleukins
/
Tumor Necrosis Factor-alpha
/
T-Lymphocytes, Helper-Inducer
Type of study:
Prognostic_studies
Limits:
Animals
/
Humans
Language:
En
Journal:
J Immunol
Year:
2013
Document type:
Article
Affiliation country:
Japón