Related Experiment Video
Updated: Jul 8, 2026
Colony Formation Assay Detecting the Proliferative Capacity of LncRNA-knockdown Osteosarcoma Cells
Published on: January 16, 2026
[Effect of EPHA2-siRNA plasmid on biological behavior of human osteosarcoma cells in vitro]
Li-zhi Zhang1, Xuan-song Cai, Zhi-kang Qian
1The Affiliated Tongji Hospital of Tongji University, Shanghai 200065, China.
Objective:
To investigate the role of EPHA2 in regulating apoptosis, proliferation and vasculogenic mimicry of osteosarcoma cells, by gene silencing through RNA interference.
Methods:
EPHA2-siRNA plasmids were achieved by gene cloning. The plasmids were transfected into human osteosarcoma cells (MG63). The expression level of EPHA2 protein was measured by Western blotting. The proliferation, apoptosis and vasculogenic mimicry features of osteosarcoma MG63cells were assessed by light microscopy, MTIP assay, flow cytometry, annexin V-FITC/PI and HE staining, respectively.
Results:
The EPHA2-siRNA plasmid was confirmed by DNA sequencing. After treatment with Sequence-specific siRNA targeted EPHA2, the protein level of the transfected group decreased significantly. As compared to non-siRNA transfected cells, the transfected group showed lower proliferation, higher and earlier apoptosis and less osteosarcoma-generated vasculogenic mimicry.
Conclusion:
EPHA2 gene may be involoved in apoptosis and proliferation of osteosarcoma cells, and may be necessary for vasculogenic mimicry. Down-regulation of EPHA2 expression by sequence-specific siRNA may be considered as a new option in the treatment of EPHA2 over-expressing cancer including osteosarcoma in future.
Insights
Silencing the EPHA2 gene in osteosarcoma cells significantly reduced proliferation and promoted apoptosis. EPHA2 is crucial for osteosarcoma cell proliferation, apoptosis, and vasculogenic mimicry.
Area of Science:
- Molecular Biology
- Cancer Research
- Cell Biology
Context:
- Osteosarcoma is a primary bone cancer with limited treatment options.
- Understanding the molecular mechanisms driving osteosarcoma progression is critical.
- The role of EPHA2 in osteosarcoma biology remains largely unexplored.
Purpose:
- To investigate the function of EPHA2 in osteosarcoma cell apoptosis, proliferation, and vasculogenic mimicry.
- To assess the therapeutic potential of targeting EPHA2 using RNA interference (RNAi).
Summary:
- EPHA2-siRNA plasmids were successfully constructed and transfected into human osteosarcoma MG63 cells.
- Gene silencing of EPHA2 led to a significant decrease in EPHA2 protein levels.
- Downregulation of EPHA2 resulted in reduced cell proliferation, increased apoptosis, and diminished vasculogenic mimicry.
Impact:
- EPHA2 plays a significant role in regulating osteosarcoma cell proliferation and apoptosis.
- EPHA2 is essential for the formation of vasculogenic mimicry in osteosarcoma.
- Targeting EPHA2 through sequence-specific siRNA presents a potential novel therapeutic strategy for osteosarcoma.
More Related Videos
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
07:31A Syngeneic Orthotopic Osteosarcoma Sprague Dawley Rat Model with Amputation to Control Metastasis Rate
Published on: May 3, 2021