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Acute lymphoblastic leukemia-derived exosome inhibits cytotoxicity of natural killer cells by TGF-β signaling pathway

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A Correction to this article was published on 27 July 2021

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Abstract

This study was conducted to explore whether acute lymphoblastic leukemia (ALL)-derived exosomes affect natural killer (NK) cells. Exosomes were isolated and identified from Jurkat cells and co-cultured with NK cells. Then, the cytotoxicity, viability, and release of perforin and granzyme B in NK92-MI cells were measured. PCR arrays were used to detect gene expression alterations in the transforming growth factor (TGF)-β pathway of NK92-MI cells treated or not treated with exosomes. The morphology and size of the exosomes isolated from Jurkat cells showed typical characteristics of exosomes, and the expression of cluster of differentiation 63 was detected. Jurkat-derived exosomes were internalized by NK92-MI cells, further inhibiting the proliferation and cytotoxicity of NK92-MI cells. An enzyme-linked immunosorbent assay revealed that the release of perforin and granzyme B from NK92-MI cells decreased after co-culture with exosomes. Similarly, western blot and immunofluorescence staining verified that Jurkat-derived exosomes inhibited the expression of granzyme B and perforin. Furthermore, Jurkat-derived exosomes enhanced the signaling of the TGF-β pathway in NK92-MI cells via the MDS1 and EVI1 complex loci and homeodomain interacting protein kinase 2. In conclusion, we found that ALL-derived exosomes inhibit the biological function of NK cells and provide support for the immunotherapy of ALL.

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The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

This work was supported by Science, Technology and Innovation Bureau of Bao’an District, Basic Research Project of Healthcare in Bao'an District (no. 2019JD450).

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Conceptualization and funding acquisition: JX. Data curation: HY, TH, DW, LC, and XL. Formal analysis: XL, KC, HH, SL, and YZ. Experimental studies: HY, TH, KC, HH, SL, and YZ. Software: DW, LC, XL, and XL. Writing—original draft and review and editing: all authors. All authors read and approved the final manuscript.

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Correspondence to Jiansheng Xie.

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The authors declare no conflict on interests.

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Yu, H., Huang, T., Wang, D. et al. Acute lymphoblastic leukemia-derived exosome inhibits cytotoxicity of natural killer cells by TGF-β signaling pathway. 3 Biotech 11, 313 (2021). https://doi.org/10.1007/s13205-021-02817-5

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  • DOI: https://doi.org/10.1007/s13205-021-02817-5

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