Cited by 211Extracellular vesicles in diseaseMesenchymal stem cell researchBone Tissue Engineering Materials

Exosomes from conditioned media of bone marrow-derived mesenchymal stem cells promote bone regeneration by enhancing angiogenesis

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Takeuchi, Ryoko, Katagiri, Wataru, Endo, Satoshi, Kobayashi, Tadaharu·2019·PLOS ONE

Abstract

Growth factors in serum-free conditioned media from human bone marrow-derived mesenchymal stem cells (MSC-CM) are known to be effective in bone regeneration. However, the secretomes in MSC-CM that act as active ingredients for bone regeneration, as well as their mechanisms, remains unclear. Exosomes, components of MSC-CM, provide the recipient cells with genetic information and enhance the recipient cellular paracrine stimulation, which contributes to tissue regeneration. We hypothesized that MSC-CM-derived exosomes (MSC-Exo) promoted bone regeneration, and that angiogenesis was a key step. Here, we prepared an MSC-Exo group, MSC-CM group, and Exo-antiVEGF group (MSC-Exo with angiogenesis inhibitor), and examined the osteogenic and angiogenic potential in MSCs. Furthermore, we used a rat model of calvaria bone defect and implanted each sample to evaluate bone formation weekly, until week 4 after treatment. Results showed that MSC-Exo enhanced cellular migration and osteogenic and angiogenic gene expression in MSCs compared to that in other groups. In vivo, early bone formation by MSC-Exo was also confirmed. Two weeks after implantation, the newly formed bone area was 31.5 ± 6.5% in the MSC-Exo group while those in the control and Exo-antiVEGF groups were 15.4 ± 4.4% and 8.7 ± 1.1%, respectively. Four weeks after implantation, differences in the area between the MSC-Exo group and the Exo-antiVEGF or control groups were further broadened. Histologically, notable accumulation of osteoblast-like cells and vascular endothelial cells was observed in the MSC-Exo group; however, fewer cells were found in the Exo-antiVEGF and control groups. In conclusion, MSC-Exo promoted bone regeneration during early stages, as well as enhanced angiogenesis. Considering the tissue regeneration with transplanted cells and their secretomes, this study suggests that exosomes might play an important role, especially in angiogenesis.

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  • Osteogenesis is closely related with vascularization due to cell-to-cell communication between vascular endothelial cells and osteoblasts.

    “osteogenesis is closely related with vascularization due to cell-to-cell communication between vascular endothelial cells and osteoblasts [99].”

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Authors
Takeuchi, R., Katagiri, W., Endo, S., & Kobayashi, T.
Affiliations
Niigata University (JP)
Corresponding author
Katagiri, Wataru
Venue
PLOS ONE
Published
2019-11-21
Volume
14
Issue
11
Pages
e0225472
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2989744940
Cited by
210
References
54
Citations by year
2026: 15 · 2025: 26 · 2024: 33 · 2023: 32 · 2022: 37 · 2021: 51 · 2020: 16
FWCI
8.60
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • Institutional Repositories DataBase (IRDB) (submittedVersion)
Funders
Japan Society for the Promotion of Science (18K09785)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
  • Physical Sciences › Engineering › Biomedical Engineering › Bone Tissue Engineering Materials
Keywords
exosomes, bone marrow-derived mesenchymal stem cells, conditioned medium, bone regeneration, angiogenesis, VEGF inhibitors, osteogenic differentiation, paracrine signaling, cell transplantation, secretome
MeSH terms
Animals, Bone Regeneration, Cell Movement, Cells, Cultured, Disease Models, Animal, Humans, Skull, Culture Media, Conditioned, Neovascularization, Physiologic, Cell Culture Techniques, Paracrine Communication, Angiogenesis Inhibitors, Mesenchymal Stem Cell Transplantation, Cell Proliferation, Rats, Exosomes, Mesenchymal Stem Cells

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