The thymus is critical in establishing and maintaining the appropriate microenvironment for promoting the development and selection of T cells. regulatory functions of T cells and their role in the immune system. In addition, the levels of cytokines secreted in the thymus have a significant effect on thymic functions, including thymocyte migration and development, thymic atrophy and thymic recovery. Furthermore, the regulation and molecular mechanisms of stress-mediated thymic atrophy and involution were investigated, with particular emphasis on thymic function as a potential target for drug development and discovery using proteomics. (1992); Dalloul (1991)IFN-17.1Activated T cells; Natural killer cellsAffects T-cell, B-cell, and macrophage differentiation and maturation(36,37)Nitta and Suzuki (2016); Galy (1990); Savino (2016)IL-117.3; 17.5Thymic epithelial cells; Macrophages; MonocytesCan Nelarabine cost act as a growth factor for thymocytes and promote thymocyte T cell activation, proliferation and differentiation; Members of the IL-1 family of receptors contain activators and suppressors of inflammation(31,38,39)Savino and Dardenne (2000); Muegge (1993)IL-213C17Activated T cellsPromotes the development of Treg cells within the inner thymus; Promotes the activation of T cell proliferation, differentiation and cytokine productio(40,41)Bayer (2007); Varas (1997); Weist (2015); Meilin (1997)IL-418C19Activated T cellsT cell growth factor(42C45)Zlotnik (1987); Shevach (2009); Barnes and Powrie (2009)IL-619C28Monocytes; Macrophages; Fibroblasts; T cells; Endothelial cells; B cellsPromotes the development and maturation of thymocytes(46C48)Mittal and Roche (2009); Patel (1995)IL-720C28Stromal cells; Keratinocytes Hepatocytes; Dendritic cellsPromotes differentiation of CD8+ T cells in the thymus; Maintains T cell proliferation(49,50)Meilin (1995); Baseta and Stutman (2000)IL-914C25Activated T cellsT cell growth factor(51,52)Z?iga-Pflcker (1995); Arzt (2000)IL-1275T cellsMaintains thymic integrity and function(53,54)Cohen-Kaminsky (1991); Wang (2016)IL-1734C52T lymphocytesActivates CD4+ memory T lymphocytes; Produces Treg 17 cells(55,56)Shanley (2009); Dooley and Liston (2012); Kappler (1987)IL-2115C18Activated CD4 T cellsTreg 17 cells Promotes CD4 T cell differentiation; Reduces the Th17 pathway; Costimulates activated natural killer and CD8 lymphocytes; Desensitizes responding cells to the inhibitory effects of; Treg cells act as a switch for immunoglobulin G production in B cells(57C59)Xing and Hogquist (2012); Roberts (1990)IL-2217C22T helper 17 cellsPromotes thymic epithelial cells proliferation and survival; Affects T cell development(60,61)Kisielow (1988); Ramsdell and Fowlkes (1990); Howard (1999)TGF-12.5Activated T cells; Activated B cellsInhibits the IL-1, IL-2 and IL-7-dependent Mouse monoclonal to BLK proliferation of thymocytes(62,63,67)Wang (1994); Mller-Hermelink (1987); Gruver and Sempowski (2008)TNF-17C26Monocytes; MacrophagesPromotes T cells and B cell proliferation(68C70)Boyd Nelarabine cost (1932); Gruver (2007)TSLP18.1Epithelial and dendritic cellsPromotes T helper 2 differentiation of na?ve CD4 T cells; Activates natural killer T cells, basophils and other innate immune cells(71,72) Open in a separate window CD, cluster of differentiation; IFN, interferon; IL, interleukin; TGF-, transforming growth factor ; TNF-, tumor necrosis factor ; Treg, regulatory T; TSLP, Thymic stromal lymphopoietin. 4.?Regulation of molecular mechanisms in stress-mediated thymic atrophy and involution Stress is able to disrupt homeostasis of the immune system, and various stressful conditions cause acute thymic involution, including emotional distress, malnutrition and pregnancy (56,57). Furthermore, numerous processes can trigger thymic involution during pathological conditions, such as bacterial and viral infections, inflammation, disease, clinical malignancy treatment and Nelarabine cost preparative regimens for bone marrow transplants (58), as presented in Fig. 4. Therefore, mechanisms must exist to regulate these processes in various contexts. It is well known that this thymus serves an important role in the body’s immune response. It provides the microenvironment essential for the development of T cells from hematopoietic stem cells. The central functions of the thymus are crucial to immune tolerance in several rodent and large animal models under normal or pathological conditions. These Nelarabine cost functions act through various mechanisms, such as clonal deletion or clonal anergy of self-reactive T cells, elimination or control of self-reactive T cells, and anergy of self-reactive T cells (59C63). Recent mechanistic studies regarding central and peripheral T cell tolerance have assisted in the design of novel, immunomodulating therapeutic Nelarabine cost strategies for the treatment of autoimmune diseases, and improve the prevention, detection and treatment of cancer and associated diseases, as well as exert immunoregulatory effects in transplantation outcomes using pharmacological or biological interventions.