Human peripheral blood‑derived exosomes for microRNA delivery

Ji Young Kang, Hyewon Park, Hyoeun Kim, Dasom Mun, Hyelim Park, Nuri Yun, Boyoung Joung

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


Exosomes serve important functions in cell-to-cell communication and biological functions by serving as a delivery cargo shuttle for various molecules. The application of an improved delivery method for microRNAs (miRNAs/miRs) may enhance their potential as a therapeutic tool in cardiac diseases. Thus, the present study investigated whether human peripheral blood-derived exosomes may be used as a delivery cargo system for miRNAs, and whether the delivery of miR-21 using a human peripheral blood derived-exosome may influence the degree of remodeling following myocardial infarction (MI). In H9C2 and HL-1 cells, miR-21 expression was successfully regulated by treatment with human peripheral blood derived-exosomes loaded with an miR-21 mimic or inhibitor compared with untreated cells. In addition, the mRNA and protein expression levels of SMAD family member 7 (Smad7), phosphatase and tensin homolog (PTEN) and matrix metalloproteinase 2 (MMP2), which are involved in cardiac fibrosis, were associated with the uptake of miR‑21 mimic‑ or inhibitor-loaded exosomes. Similarly, the in vivo mRNA and protein expression of Smad7, PTEN and MMP2 were altered following treatment with miR-21 mimic- or inhibitor-loaded exosomes. Furthermore, miR-21 mimic-loaded exosomes enhanced fibrosis, whereas miR‑21 inhibitor‑loaded exosomes reduced fibrosis in a mouse MI model. These results suggested that miRNA-loaded human peripheral blood derived-exosomes may be used as a therapeutic tool for cardiac diseases.

Original languageEnglish
Pages (from-to)2319-2328
Number of pages10
JournalInternational journal of molecular medicine
Issue number6
Publication statusPublished - 2019 Jun

Bibliographical note

Publisher Copyright:
© 2019 Spandidos Publications. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Genetics


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