Abstract
Introduction
The purpose of the current study was to evaluate the effect of mesenchymal stem cells-derived extracellular vesicles (MSC-EVs) on the production of cytokines and expression of genes, which are corresponded to the subsets of T helper cells.
Materials and Methods
The supernatant of the second passage of MSCs that had been isolated from C57BL/6 mice abdominal adipose tissue was used to collect the MSC-EV. Splenocytes of healthy mice were activated using anti-CD3 and anti-CD28 antibodies and simultaneously were treated using the MSC-EVs. The proliferation rate of lymphocytes and the frequency of regulatory T cells were measured using flow cytometry. In addition, the expressions of T helper cell subset-specific transcription factors were evaluated using a real-time PCR assay. To appraise the effects of MSC-EV on splenocytes, the levels of IFN-γ, IL-17A, IL-10, and TGF-β were measured using ELISA.
Results
The results showed that the treatment of the CD3/CD28-activated splenocytes with MSC-EV did not statistically change the proliferation of CD3+ splenocytes. However, after the treatment, the mRNA levels of Foxp3 and Elf4 as well as the frequency of regulatory T cells was significantly higher when compared to the control group. The expression levels of Gata3, Rorc, and Tbx21 were down-regulated while, the corresponding cytokines levels did not alter.
Conclusion
The results revealed that the in vitro treatment of MSC-EV was associated with the increase in the frequency of CD4+CD25+FOXP3+ T cells and upregulation of Foxp3 mRNA level.
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Acknowledgements
The present study was supported financially by grants from the deputy of research, Shahid Beheshti University of Medical Sciences (Grant Nos. 8818 and 19547).
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Funding was provided by Shahid Beheshti University of Medical Sciences (Grant Nos. 8818 and 19547).
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Yeganeh, A., Fathollahi, A., Hashemi, S.M. et al. In vitro treatment of murine splenocytes with extracellular vesicles derived from mesenchymal stem cells altered the mRNA levels of the master regulator genes of T helper cell subsets. Mol Biol Rep 50, 3309–3316 (2023). https://doi.org/10.1007/s11033-023-08247-1
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DOI: https://doi.org/10.1007/s11033-023-08247-1