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A Matrigel-Based Tube Formation Assay to Assess the Vasculogenic Activity of Tumor Cells
Published on: September 7, 2011
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Vasculogenic Mimicry-An Overview
Emily Marques Dos Reis1, Fernanda Vieira Berti2
1Chemical and Food Engineering Department, Federal University of Santa Catarina, Florianópolis, SC, Brazil. emimreis@gmail.com.
Methods in Molecular Biology (Clifton, N.J.)
|June 30, 2022
Summary
Vasculogenic mimicry (VM) is a tumor blood vessel network formed by cancer cells, not endothelial cells. This finding explains why anti-angiogenesis drugs fail in some cancer treatments, impacting patient prognosis.
Area of Science:
- Oncology
- Cancer Biology
- Tumor Microenvironment
Background:
- Vasculogenic mimicry (VM) is a tumor microcirculation model observed in melanoma.
- VM involves vascular channels formed by tumor cells, lacking endothelial cells.
- VM is characterized by Periodic Acid-Schiff (PAS) positivity and CD31 negativity.
Purpose of the Study:
- To elucidate the role of VM in tumor growth and metastasis.
- To understand the implications of VM in cancer prognosis.
- To explain the limited efficacy of angiogenesis inhibitors in certain cancers.
Main Methods:
- Histopathological analysis of tumor tissues.
- Immunohistochemical staining for PAS and CD31.
- Correlation of VM presence with clinical outcomes.
Main Results:
- VM channels were identified as tumor cell-derived structures.
- VM provides oxygen and nutrients to aggressive tumor cells.
- The presence of VM is associated with poor patient prognosis.
Conclusions:
- VM represents an alternative tumor vascularization pathway.
- VM's independence from endothelial cells contributes to treatment resistance.
- Targeting VM may offer new therapeutic strategies for aggressive cancers.
