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RESEARCH PRODUCT

Interleukin-9 and T helper type 9 cells in rheumatic diseases

Roberto GiacomelliGiuliana GugginoFrancesco CicciaGiovanni TrioloAngelo FerrantePaola Cipriani

subject

0301 basic medicinerheumatoid arthritispsoriatic arthritisystemic sclerosisSLEReview ArticleIL-9; psoriatic arthritis; rheumatoid arthritis; SLE; systemic sclerosis; Th9 cells; vasculitis; Immunology and Allergy; ImmunologyTh9 cellsvasculitisArthritis RheumatoidInterleukin 210302 clinical medicineT-Lymphocyte SubsetsTh9 cellIL-9; SLE; Th9 cells; psoriatic arthritis; rheumatoid arthritis; systemic sclerosis; vasculitisLupus Erythematosus SystemicMedicineImmunology and AllergyIL-2 receptorpsoriatic arthritisB-LymphocytesInterleukin-17Innate lymphoid cellT-Lymphocytes Helper-InducerAcquired immune systemInterleukin 10vasculitiInterleukin 12systemic sclerosiSignal TransductionImmunologyAutoimmune Diseases03 medical and health sciencesRheumatic DiseasesAnimalsHumans030203 arthritis & rheumatologyScleroderma Systemicbusiness.industryArthritis PsoriaticInterleukin-9rheumatoid arthritiIL-9Immunity HumoralInterleukin 33Settore MED/16 - Reumatologia030104 developmental biologyCTLA-4Immunologybusiness

description

Summary Interleukin (IL)-9 is a 28-30 kDa monomeric glycosylated polypeptide belonging to the IL-7/IL-9 family of proteins that bind to a composite receptor consisting of the private receptor IL-9R and the IL-2 receptor, gamma (IL-2RG), a common gamma subunit shared by the receptors of many different cytokines. The IL-9R is expressed widely and IL-9 impacts a number of effector cells, such as effector T cells, B cells, innate lymphoid cells, mast cells, polymorphonuclear cells, epithelial cells and smooth muscle cells, playing an important role in regulating inflammatory immunity. The critical role of IL-9 in promoting cellular and humoral immune responses makes it an important focus of potential therapeutic interventions. Recently, a defined subset of T helper type cells, Th9 cells, has been identified by the potent production of IL-9. The involvement of the Th9 cell subset has been described in many types of inflammatory diseases, namely atopic diseases, helminth infections, experimental autoimmune encephalomyelitis and ulcerative colitis. In this review, we summarize the IL-9 biological activities, highlighting roles for IL-9 and Th9 cells in rheumatoid and psoriatic arthritis, systemic vasculitis, systemic lupus erythematosus and systemic sclerosis.

10.1111/cei.12807http://hdl.handle.net/11697/100078