Mucosal-associated invariant T cells are depleted and functionally altered in patients with common variable immunodeficiency
2017
Abstract Common variable immunodeficiency (CVID) is a primary immunoglobulin deficiency characterized by recurrent infections and complications, including autoimmunity, enteropathy, polyclonal lymphocytic infiltration or lymphoid malignancy. Innate T cells can support B cell maturation and antibody production. We investigated the numbers, phenotypes and functions of circulating B cell, γδ T cell, invariant natural killer T (iNKT) cell and mucosal-associated invariant T (MAIT) cell subsets in 23 CVID patients and 27 healthy controls. Switched-memory B cells and plasmablasts were depleted in CVID patients ( p p p p in vitro . Thus, MAIT cell depletion and activation may contribute to immunodeficiency and complications associated with CVID.
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