Cited by 215Extracellular vesicles in diseaseMicroRNA in disease regulationMesenchymal stem cell research

Employing mesenchymal stem cells to support tumor-targeted delivery of extracellular vesicle (EV)-encapsulated microRNA-379

Open access
O’Brien, K. P., Khan, S., Gilligan, K. E., Zafar, H., Lalor, P., Glynn, C., O’Flatharta, C., Ingoldsby, H. +10 more·2018·Oncogene

Abstract

Adult Mesenchymal Stem Cells (MSCs) have a well-established tumor-homing capacity, highlighting potential as tumor-targeted delivery vehicles. MSCs secrete extracellular vesicle (EV)-encapsulated microRNAs, which play a role in intercellular communication. The aim of this study was to characterize a potential tumor suppressor microRNA, miR-379, and engineer MSCs to secrete EVs enriched with miR-379 for in vivo therapy of breast cancer. miR-379 expression was significantly reduced in lymph node metastases compared to primary tumor tissue from the same patients. A significant reduction in the rate of tumor formation and growth in vivo was observed in T47D breast cancer cells stably expressing miR-379. In more aggressive HER2-amplified HCC-1954 cells, HCC-379 and HCC-NTC tumor growth rate in vivo was similar, but increased tumor necrosis was observed in HCC-379 tumors. In response to elevated miR-379, COX-2 mRNA and protein was also significantly reduced in vitro and in vivo. MSCs were successfully engineered to secrete EVs enriched with miR-379, with the majority found to be of the appropriate size and morphology of exosomal EVs. Administration of MSC-379 or MSC-NTC cells, or EVs derived from either cell population, resulted in no adverse effects in vivo. While MSC-379 cells did not impact tumor growth, systemic administration of cell-free EVs enriched with miR-379 was demonstrated to have a therapeutic effect. The data presented support miR-379 as a potent tumor suppressor in breast cancer, mediated in part through regulation of COX-2. Exploiting the tumor-homing capacity of MSCs while engineering the cells to secrete EVs enriched with miR-379 holds exciting potential as an innovative therapy for metastatic breast cancer.

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Crossref · 10.1038/s41388-017-0116-9

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  • MSC-derived exosomes containing miR-379 have a therapeutic effect on breast cancer, with significantly reduced tumor growth rates in T47D breast cell line expressing miR-379.

    “Brien et al. reported that mesenchymal stem cells (MSC)-derived exosomes containing miR-379 were shown to have a therapeutic effect on breast cancer, with significantly reduced tumor growth rates in T47D breast cell line expressing miR-379 [51].”

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Authors
O’Brien, K. P., Khan, S., Gilligan, K. E., Zafar, H., Lalor, P., Glynn, C., O’Flatharta, C., Ingoldsby, H., Dockery, P., De Bhulbh, A., Schweber, J. R., St John, K., Leahy, M., Murphy, J. M., Gallagher, W. M., O’Brien, T., Kerin, M. J., & Dwyer, R. M.
Affiliations
  • Ollscoil na Gaillimhe – University of Galway (IE)
  • University Hospital Galway (IE)
  • University College Dublin (IE)
Corresponding author
Dwyer, R. M.
Venue
Oncogene
Published
2018-01-25
Volume
37
Issue
16
Pages
2137-2149
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2793133729
Cited by
215
References
54
Citations by year
2026: 11 · 2025: 23 · 2024: 21 · 2023: 38 · 2022: 41 · 2021: 33 · 2020: 29 · 2019: 12 · 2018: 7
FWCI
7.22
Type
journal article
Language
en
Open access
Licence
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
  • Arrow@dit (Dublin Institute of Technology) (acceptedVersion)
  • ARAN (University of Galway Research Repository) (Ollscoil na Gaillimhe – University of Galway) (acceptedVersion, cc-by-nc-nd)
  • ARAN (University of Galway Research Repository) (Ollscoil na Gaillimhe – University of Galway) (acceptedVersion, cc-by)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
Keywords
mesenchymal stem cells, extracellular vesicles, tumor-targeted delivery, breast cancer, tumor suppressor microRNA, cyclooxygenase-2, HER2-amplified breast cancer, lymph node metastasis, cell-free therapy, exosomes
MeSH terms
Extracellular Vesicles, Animals, Breast Neoplasms, Cells, Cultured, Drug Compounding, Female, Humans, Lymphatic Metastasis, Mice, Inbred BALB C, Mice, Nude, Neoplasm Metastasis, Genetic Therapy, Gene Expression Regulation, Neoplastic, Drug Delivery Systems, Xenograft Model Antitumor Assays, MicroRNAs, Therapies, Investigational, Mesenchymal Stem Cell Transplantation, Mice, Adult Stem Cells, Mesenchymal Stem Cells

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