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Updated: Jun 21, 2026

Isolation and Culture Expansion of Tumor-specific Endothelial Cells
10:15

Isolation and Culture Expansion of Tumor-specific Endothelial Cells

Published on: October 14, 2015

Tumor endothelial cells join the resistance

Andrew C Dudley1, Michael Klagsbrun

  • 1Vascular Biology Program, Departments of Surgery and Pathology, Harvard Medical School, Boston, MA 02115, USA. andrew.dudley@childrens.harvard.edu

Clinical Cancer Research : an Official Journal of the American Association for Cancer Research
|July 30, 2009
PubMed

Insights

Tumor blood vessels are surprisingly complex. Tumor-specific endothelial cells show reduced sensitivity to anti-cancer drugs compared to normal cells, impacting antiangiogenesis therapy effectiveness.

Area of Science:

  • Oncology
  • Vascular Biology
  • Cancer Therapeutics

Background:

  • Antiangiogenesis research aims to inhibit tumor blood vessel formation.
  • Tumor vasculature is unexpectedly complex and dynamic.
  • Previous assumptions about tumor blood vessels require revision.

Purpose of the Study:

  • To investigate the sensitivity of tumor-specific endothelial cells to cytotoxic and antiangiogenic drugs.
  • To understand the implications of endothelial cell heterogeneity in cancer treatment.

Main Methods:

  • Comparative drug sensitivity assays.
  • Analysis of endothelial cell responses to various therapeutic agents.
  • Utilizing models to study tumor-specific endothelial cell behavior.

Main Results:

  • Tumor-specific endothelial cells exhibit significantly lower sensitivity to cytotoxic drugs.
  • These specialized cells are also less responsive to antiangiogenic agents.
  • This differential sensitivity challenges existing therapeutic strategies.

Conclusions:

  • Endothelial cell differences between tumors and normal tissues are critical.
  • The reduced drug sensitivity of tumor endothelial cells may limit the efficacy of antiangiogenesis therapies.
  • Further research is needed to develop strategies overcoming this resistance.

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