Mesenchymal Stem Cells and Adaptive Immune Responses

Immunol Lett. 2015 Dec;168(2):147-53. doi: 10.1016/j.imlet.2015.06.003. Epub 2015 Jun 12.

Abstract

Over the past decade, our understanding of the regulatory role of mesenchymal stem cells (MSCs) in adaptive immune responses through both preclinical and clinical studies has dramatically expanded, providing great promise for treating various inflammatory diseases. Most studies are focused on the modulatory effects of these cells on the properties of T cell-mediated immune responses, including activation, proliferation, survival, and subset differentiation. Interestingly, the immunosuppressive function of MSCs was found to be licensed by IFN-γ and TNF-α produced by T cells and that can be further amplified by cytokines such as IL-17. However, the immunosuppressive function of MSCs can be reversed in certain situation, such as suboptimal levels of inflammatory cytokines, or in the presence of immunosuppressive molecules. Here we review the influence of MSCs on adaptive immune system, especially their bidirectional interaction in tuning the immune microenvironment and subsequently repairing damaged tissue. Understanding MSC-mediated regulation of T cells is expected to provide fundamental information for guiding appropriate applications of MSCs in clinical settings.

Keywords: Adaptive immune responses; Immunoregulation; Mesenchymal stem cells; Plasticity.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Adaptive Immunity / immunology*
  • Cell Communication / immunology
  • Cytokines / immunology*
  • Cytokines / metabolism
  • Humans
  • Interferon-gamma / immunology
  • Interferon-gamma / metabolism
  • Interleukin-17 / immunology
  • Interleukin-17 / metabolism
  • Mesenchymal Stem Cells / cytology
  • Mesenchymal Stem Cells / immunology*
  • Models, Immunological
  • T-Lymphocytes / cytology
  • T-Lymphocytes / immunology*
  • T-Lymphocytes / metabolism
  • Tumor Necrosis Factor-alpha / immunology
  • Tumor Necrosis Factor-alpha / metabolism

Substances

  • Cytokines
  • Interleukin-17
  • Tumor Necrosis Factor-alpha
  • Interferon-gamma