Kayleigh Peters, Trisha McDonald, Fauziyya Muhammad, Adrien Brady, John Dostal, Darren J Lee
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TIGIT stimulation suppresses autoimmune uveitis by inhibiting Th17 cell infiltration.
T cell immunoglobulin and ITIM domain (TIGIT) is an immune checkpoint molecule that suppresses T cell activation and promotes an immunosuppressive environment to suppress autoimmune diseases. However, the impact of a TIGIT agonist as a treatment for ocular autoimmune disease has not been investigated. We examined TIGIT expression on T helper 17 (Th17) and regulatory T cells (Tregs), the role of TIGIT on experimental autoimmune uveitis and Th17 cells, and the impact of Treg generation following TIGIT stimulation. TIGIT stimulation at the onset of clinical symptoms reduced the severity of uveitis and suppressed infiltration of Th17 cells into the eye. Further, Tregs from mice treated with the TIGIT agonist were capable of suppressing experimental autoimmune uveitis in recipient mice. This report demonstrates that stimulation of TIGIT at onset of disease suppresses symptoms and allows for induction of regulatory immunity that provides resistance to uveitis.
期刊介绍：
JLB is a peer-reviewed, academic journal published by the Society for Leukocyte Biology for its members and the community of immunobiologists. The journal publishes papers devoted to the exploration of the cellular and molecular biology of granulocytes, mononuclear phagocytes, lymphocytes, NK cells, and other cells involved in host physiology and defense/resistance against disease. Since all cells in the body can directly or indirectly contribute to the maintenance of the integrity of the organism and restoration of homeostasis through repair, JLB also considers articles involving epithelial, endothelial, fibroblastic, neural, and other somatic cell types participating in host defense. Studies covering pathophysiology, cell development, differentiation and trafficking; fundamental, translational and clinical immunology, inflammation, extracellular mediators and effector molecules; receptors, signal transduction and genes are considered relevant. Research articles and reviews that provide a novel understanding in any of these fields are given priority as well as technical advances related to leukocyte research methods.
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