CD39-mediated effect of human bone marrow-derived mesenchymal stem cells on the human Th17 cell function

Area of Science:

• Immunology
• Cell Biology
• Stem Cell Research

Background:

• T helper 17 (Th17) cells play a crucial role in immune responses and inflammatory diseases.
• Mesenchymal stem cells (MSCs) possess immunomodulatory properties, but the underlying mechanisms are not fully elucidated.
• The CD39-CD73-adenosine pathway is implicated in immune suppression, but its role in MSC-mediated Th17 cell modulation requires further investigation.

Purpose of the Study:

• To investigate the immunomodulatory effects of human bone marrow-derived mesenchymal stem cells (hBMSCs) on human Th17 cell function.
• To determine the role of the CD39-mediated adenosine-producing pathway in hBMSC-induced suppression of Th17 cells.
• To analyze the impact of hBMSCs on Th17 cell proliferation and cytokine secretion (IFN-γ and IL-17A).

Main Methods:

• Co-culture of human Th17 cells with hBMSCs.
• Assessment of Th17 cell proliferation and cytokine secretion (IFN-γ, IL-17A) using flow cytometry and ELISA.
• Evaluation of CD39 and CD73 expression on T cells via flow cytometry.
• Inhibition of the CD39 pathway using anti-CD39 treatment.

Main Results:

• hBMSCs significantly suppressed Th17 cell proliferation and secretion of IL-17A and IFN-γ.
• Anti-CD39 treatment partially reversed the suppressive effects of hBMSCs on Th17 cell proliferation and cytokine secretion.
• hBMSCs increased CD39 and CD73 expression on T cells, correlating with enhanced adenosine production and suppressive function.

Conclusions:

• hBMSCs effectively suppress Th17 cell immune responses.
• The CD39-CD73-adenosine pathway is a key mechanism mediating the immunomodulatory effects of hBMSCs on Th17 cells.
• Targeting the CD39-CD73-adenosine pathway may offer therapeutic strategies for immune-mediated diseases involving Th17 cells.