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Ren S.,National Center for Clinical Laboratories and Beijing Hospital | Hu J.,National Center for Clinical Laboratories and Beijing Hospital | Chen Y.,General Hospital of Beijing Military Area Command | Yuan T.,National Center for Clinical Laboratories and Beijing Hospital | And 2 more authors.
Clinical and Experimental Immunology | Year: 2016

Inflammation instigated by interleukin (IL)-17-producing cells is central to the development and pathogenesis of several human autoimmune diseases and animal models of autoimmunity. The expansion of IL-17-producing cells from healthy donors is reportedly promoted by mesenchymal stem cells derived from fetal bone marrow. In the present study, human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) were examined for their effects on lymphocytes from healthy donors and from patients with systemic lupus erythematosus (SLE). Significantly higher levels of IL-17 were produced when CD4+ T cells from healthy donors were co-cultured with hUC-MSCs than those that were cultured alone. Blocking experiments identified that this effect might be mediated partially through prostaglandin E2 (PGE2) and IL-1β, without IL-23 involvement. We then co-cultured hUC-MSCs with human CD4+ T cells from systemic lupus erythematosus patients. Ex-vivo inductions of IL-17 by hUC-MSCs in stimulated lymphocytes were significantly higher in SLE patients than in healthy donors. This effect was not observed for IL-23. Taken together, our results represent that hUC-MSCs can promote the IL-17 production from CD4+ T cells in both healthy donor and SLE patients. PGE2 and IL-1β might also be partially involved in the promotive effect of hUC-MSCs. © 2016 British Society for Immunology.

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