Open Access

Involvement of MM cell‑derived exosomes in T lymphocytes immune responses

  • Authors:
    • Qing Shao
    • Ling Deng
    • Hui Liu
    • Zhaoyun Liu
    • Jin Chen
    • Fengjuan Jiang
    • Siyang Yan
    • Rong Fu
  • View Affiliations

  • Published online on: July 17, 2020     https://doi.org/10.3892/ol.2020.11892
  • Article Number: 31
  • Copyright: © Shao et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Exosomes were reported to mediate cell communication in the tumor microenvironment; however, the effects of multiple myeloma (MM)‑derived exosomes on the quantity and function of T cells remain unknown. Exosomes were extracted from MM cell lines (OPM2 and U266B1) by ultracentrifugation using a Total Exosome Isolation kit. Exosomes were co‑cultured with CD4+ T, CD8+ T and regulatory T (Treg) cells that were isolated from healthy donors (HDs) and patients with MM using magnetic beads. Flow cytometry was used to detect T cells apoptosis and expression of perforin and granzyme B in CD8+ T cells. Cell viability was detected using Cell Counting kit‑8, and interleukin 10 (IL‑10) and transforming growth factor β (TGF‑β) in cell supernatants were detected by ELISA. The apoptosis of HD‑CD4+ T was higher in the OPM2 group, and viability in the U266B1 group was decreased. The apoptosis of HD‑CD8+ T decreased in the OPM2 and U266B1 groups, and cell viability increased in the OPM2 and the U266B1 groups. Perforin of HD‑CD8+ T in the U266B1 group was lower while perforin of MM‑CD8+ T in OPM2 and U266B1 groups was markedly decreased. The apoptosis of HD‑Treg was lower in the U266B1 group, but apoptosis of MM‑Treg was higher in the U266B1 group. The viability of HD‑Treg in U266B1 group increased but the viability of MM‑Treg in OPM2 and U266B1 groups decreased. TGF‑β from MM‑Treg decreased in the OPM2 and U266B1 groups when compared with the control group (P<0.05). MM‑derived exosomes promote apoptosis and inhibit proliferation of HD‑CD4+ T, inhibit apoptosis and promote proliferation, but inhibit perforin of HD‑CD8+ T, inhibit apoptosis and promote proliferation HD‑Treg, and inhibit perforin of MM‑CD8+ T and TGF‑β secretion of MM‑Treg.
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October-2020
Volume 20 Issue 4

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Online ISSN:1792-1082

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Copy and paste a formatted citation
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Spandidos Publications style
Shao Q, Deng L, Liu H, Liu Z, Chen J, Jiang F, Yan S and Fu R: Involvement of MM cell‑derived exosomes in T lymphocytes immune responses. Oncol Lett 20: 31, 2020
APA
Shao, Q., Deng, L., Liu, H., Liu, Z., Chen, J., Jiang, F. ... Fu, R. (2020). Involvement of MM cell‑derived exosomes in T lymphocytes immune responses. Oncology Letters, 20, 31. https://doi.org/10.3892/ol.2020.11892
MLA
Shao, Q., Deng, L., Liu, H., Liu, Z., Chen, J., Jiang, F., Yan, S., Fu, R."Involvement of MM cell‑derived exosomes in T lymphocytes immune responses". Oncology Letters 20.4 (2020): 31.
Chicago
Shao, Q., Deng, L., Liu, H., Liu, Z., Chen, J., Jiang, F., Yan, S., Fu, R."Involvement of MM cell‑derived exosomes in T lymphocytes immune responses". Oncology Letters 20, no. 4 (2020): 31. https://doi.org/10.3892/ol.2020.11892