Adipose derived mesenchymal stem cell exosomes loaded with miR-10a promote the differentiation of Th17 and Treg from naive CD4 + T cell.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

The balance between various CD4 + T cell subsets through highly regulated differentiation of naïve T cells is critical to ensure proper immune response, disruption of which may cause autoimmunity and cancers. miR-10a has been reported to regulate the fate of naïve T cells. Mesenchymal stem cells (MSC) derived exosomes are known effective immunomodulators and ideal vehicles for delivery of microRNAs. This study was aimed to examine the impacts of miR-10a on CD4 + cell fate upon exosomal delivery in combination with immunomodulatory effects of MSCs. Exosomes isolated form adipose tissue derived mesenchymal stem cells (AD-MSC-Exo) were transfected with miR-10a and added to naïve T cells purified from mouse spleen. AD-MSC-Exos were characterized and the efficacy of miR-10a delivery was evaluated. The expression levels of T-bet, GATA3, RORγt, and Foxp3 and the secreted levels of IFN-γ, IL-4, IL-17, and TGF-β respectively specific to Th1, Th2, Th17 and Treg, were assessed by qPCR and ELISA. Being transferred by AD-MSC-Exo, miR-10a was effectively induced in CD4 + T cells. Upon treatment with miR-10a loaded exosomes, the expression levels of RORγt and Foxp3 were enhanced and that of T-bet was reduced. Similarly, the secreted levels of IL-17, and TGF-β were increased and that of IFN-γ was decreased. Our data indicate that miR-10a loaded exosomes, promote Th17 and Tregs response while r

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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