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Updated: Feb 15, 2026

LINE-1 Methylation Analysis in Mesenchymal Stem Cells Treated with Osteosarcoma-Derived Extracellular Vesicles
Published on: February 1, 2020
Osteosarcoma-derived extracellular vesicles induce a tumor-like phenotype in normal recipient cells
Enrica Urciuoli1,2, Ezio Giorda3, Marco Scarsella3
1Multifactorial Diseases Unit-Research Laboratories, Bambino Gesù Children's Hospital, Rome, Italy.
Osteosarcoma cells release extracellular vesicles (EVs) that transform normal cells into tumor-like cells. These EVs promote cancer cell growth and spread by altering recipient cell behavior and gene expression.
Area of Science:
- Oncology
- Cell Biology
- Biochemistry
Background:
- Osteosarcoma is the most common primary bone cancer in children and adolescents.
- Osteosarcoma cells interact with bone cells, creating a detrimental cycle that promotes tumor growth.
- Extracellular Vesicles (EVs) are implicated in intercellular communication and may play a role in osteosarcoma progression.
Purpose of the Study:
- To investigate the role of EVs released by osteosarcoma cells in promoting tumor growth.
- To assess the communication between osteosarcoma cells and normal recipient cells via EVs.
- To determine the biological and functional effects of osteosarcoma-derived EVs on recipient cells.
Main Methods:
- Assessed EV production by three osteosarcoma cell lines with varying aggressiveness.
- Treated murine fibroblast NIH3T3 cells with osteosarcoma-derived EVs.
- Analyzed changes in proliferation, survival, migration, adhesion, and gene expression in treated cells.
Main Results:
- Osteosarcoma-derived EVs efficiently fused with and were taken up by recipient NIH3T3 cells.
- EV treatment enhanced NIH3T3 cell proliferation, survival under starvation, migration, adhesion, and 3D sphere formation.
- EVs induced anchorage-independent growth in NIH3T3 cells and altered gene expression, including de novo murine MMP-9 and TNF-α expression.
Conclusions:
- Osteosarcoma-derived EVs possess transforming capabilities, inducing tumor-like phenotypes in recipient cells.
- EVs mediate intercellular communication that promotes osteosarcoma progression and metastasis.
- Targeting osteosarcoma-derived EVs may offer a novel therapeutic strategy for bone cancer.
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11:15A Preclinical Mouse Model of Osteosarcoma to Define the Extracellular Vesicle-mediated Communication Between Tumor and Mesenchymal Stem Cells
Published on: May 6, 2018
08:02In Vivo Immunogenicity Screening of Tumor-Derived Extracellular Vesicles by Flow Cytometry of Splenic T Cells
Published on: September 23, 2021
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