6533b7dbfe1ef96bd1270b56
RESEARCH PRODUCT
Potential involvement of IL-9 and Th9 cells in the pathogenesis of rheumatoid arthritis
B. VitoloMarco Pio La MannaCarlomaurizio MontecuccoAntonio ManzoFrancesco CicciaFrancesco DieliGiovanni TrioloRiccardo AlessandroAroldo RizzoGiuseppina GiardinaGiuliana GugginoGuido Sirecisubject
CD4-Positive T-LymphocytesMaleCitrullinated peptide; IL-9; Rheumatoid arthritis; Th9 cells; Adolescent; Adult; Arthritis Rheumatoid; CD4-Positive T-Lymphocytes; Cells Cultured; Cytokines; Female; Gene Expression Regulation; Humans; Interleukin-4; Interleukin-9; Lymphocyte Activation; Male; Middle Aged; RNA Messenger; Synovial Membrane; T-Lymphocyte Subsets; Transforming Growth Factor beta; Young Adult; Rheumatology; Medicine (all); Pharmacology (medical)MessengerLymphocyte ActivationArthritis RheumatoidT-Lymphocyte SubsetsTransforming Growth Factor betaRheumatoidTh9 cellPharmacology (medical)Cells CulturedCulturedmedicine.diagnostic_testbiologyMedicine (all)Synovial MembraneMiddle Agedmedicine.anatomical_structureCD4-Positive T-LymphocyteCytokinesFemaleArthritiHumanAdultThymic stromal lymphopoietinAdolescentT cellCD3T-Lymphocyte SubsetCitrullinated peptidePeripheral blood mononuclear cellFlow cytometryYoung AdultRheumatologyThymic Stromal LymphopoietinmedicineHumansInterleukin 9RNA MessengerCytokineInterleukin 4Rheumatoid arthritibusiness.industryInterleukin-9IL-9Settore MED/16 - ReumatologiaGene Expression RegulationImmunologybiology.proteinRNACellInterleukin-4Synovial membranebusinessdescription
Objective IL-9 has been shown to be upregulated before the clinical onset of articular disease in RA. The exact role of IL-9 and Th9 cells in RA, however, has not yet been adequately studied. The aim of this study was to evaluate the expression of IL-9 and IL-9-expressing cells in RA patients. Methods IL-9, IL-9R, PU.1, IL-9, thymic stromal lymphopoietin (TSLP), IL-4 and TGF-β expression was assessed by real-time-PCR in the synovial tissues of RA and OA patients. IL-9, IL-9R, IL-4, TSLP and TGF-β were also investigated by immunohistochemistry. Peripheral CD4(+) T cell subsets were studied by flow cytometry analysis before and after incubation with citrullinated peptides. Results IL-9 was overexpressed in RA synovial tissues and correlated with the degree of histological organization of B and T cells in ectopic lymphoid structures. The majority of IL-9-producing cells were identified as CD3(+) cells. Increased mRNA and protein expression of IL-9R, IL-4, TSLP and TGF-β was also observed in RA synovial tissue. Blood peripheral Th9 cells were expanded by citrullinated peptides. Conclusion These results indicate that Th9 cells and IL-9 were frequently detected in peripheral blood mononuclear cells and synovia of RA patients. A possible pathogenic role for Th9 in RA is discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-01-01 |