Abstract
Background
Donor cell-derived exosomes regulate recipient cell functions. The aim of this study was to investigate the effect of human normal bladder stromal cell (hBSC) derived exosomal miR-217 on bladder cell cancer proliferation and migration.
Methods
Human BSCs were transfected with miR-217 mimic or inhibitor and hBSC-derived exosomes were isolated. Human bladder cancer cell lines (T24 and 5367) were co-cultured with hBSC-derived exosomal miR-217 mimic or inhibitor. Proliferation, migration, and apoptosis of the bladder cancer cells were assessed by Edu assay, Transwell migration assay, and Annexin V assay.
Results
Expression of miR-217 was significantly higher in the T24 and 5367 cell lines (P < 0.01). Exosomal miR-217 mimic enhanced proliferation and migration of T24 and 5367 cells, but inhibited apoptosis of the cells (P < 0.01); in contrast, exosomal miR-217 inhibitor suppressed proliferation and migration but stimulated apoptosis of the two cancer cell lines (P < 0.01). Moreover, exosomal miR-217 mimic stimulated YAP and its target proteins including Cyr61, CTGF, and ANKRD1 (P < 0.01), and in contrast, exosomal miR-217 inhibitor suppressed YAP and its target proteins (P < 0.01).
Conclusion
These findings suggested that hBSC-derived exosomal miR-217 may act as oncogene in bladder cancer cells, and that Hippo-YAP signaling pathway maybe the target for miR-217 in the bladder cancer cell lines.
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Data availability
The datasets generated and analyzed during the current study are available from the corresponding author on reasonable request.
Abbreviations
- hBSC:
-
Human normal bladder stromal cell
- YAP:
-
Yes-associated proteins
- TAZ:
-
Transcriptional activator with PDZ domain
- Cyr 61:
-
Cysteine-rich protein 61
- CTGF:
-
Connective tissue growth factor
- ANKRD1:
-
Ankyrin repeat domain 1
- FCS:
-
Fetal calf serum
- DMEM:
-
Dulbecco’s modified Eagle’s medium
- SV-HUC-1:
-
Normal human bladder epithelial cell line
- TEM:
-
Transmission electron microscopy
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ZMH and ZGJ contributed to the conception and design of the study; ZMH contributed to the acquisition of data and performed the experiments; HW contributed to the analysis of data; ZMH wrote the manuscript; all authors reviewed and approved the final version of the manuscript.
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This research was approved by the Ethics Committee of Peking Union Medical College Hospital. All methods were carried out in accordance with relevant guidelines and regulations. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.
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Huang, ZM., Wang, H. & Ji, ZG. Bladder mesenchymal stromal cell-derived exosomal miRNA-217 modulates bladder cancer cell survival through Hippo-YAP pathway. Inflamm. Res. 70, 959–969 (2021). https://doi.org/10.1007/s00011-021-01494-7
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DOI: https://doi.org/10.1007/s00011-021-01494-7