Tie2/TEK and Glioma Cell Interaction with Endothelial Cells
Author Information
Author(s): Liu Dan, Martin Vanesa, Fueyo Juan, Lee Ok-Hee, Xu Jing, Cortes-Santiago Nahir, Alonso Marta M., Aldape Kenneth, Colman Howard, Gomez-Manzano Candelaria
Primary Institution: The University of Texas M. D. Anderson Cancer Center
Hypothesis
Does the Angiopoietin 1 (Ang1)/Tie2 axis regulate crosstalk between glioma cells and endothelial cells?
Conclusion
The Tie2 signaling in glioma cells enhances their adhesion to endothelial cells and promotes an invasive phenotype.
Supporting Evidence
- Ang1 enhances the adhesion of Tie2-expressing glioma and brain tumor stem cells to endothelial cells.
- Specific knockdown of Tie2 expression inhibits glioma cell adhesion.
- Activation of Tie2 induces upregulation of integrin β1 and N-cadherin.
- Intracranial co-implantation of Tie2-positive glioma cells and endothelial cells results in invasive tumors.
Takeaway
This study shows that a specific protein helps brain cancer cells stick to blood vessel cells, making them spread more easily.
Methodology
The study used in vitro and in vivo models to analyze the interaction between glioma cells and endothelial cells, focusing on the Tie2 receptor.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
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