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Related Concept Videos

Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
Mechanism of Angiogenesis01:10

Mechanism of Angiogenesis

Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...
The Tumor Microenvironment02:17

The Tumor Microenvironment

Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...

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Related Experiment Video

Updated: Jun 24, 2026

Monitoring Functionality and Morphology of Vasculature Recruited by Factors Secreted by Fast-growing Tumor-generating Cells
09:03

Monitoring Functionality and Morphology of Vasculature Recruited by Factors Secreted by Fast-growing Tumor-generating Cells

Published on: November 23, 2014

[Neoplastic angiogenesis].

P Khosravi Shahi1, A Del Castillo Rueda, G Pérez Manga

  • 1Servicio de Oncología Médica, Hospital General Universitario Gregorio Marañón, Madrid, España. drkhosravi@hotmail.com

Anales De Medicina Interna (Madrid, Spain : 1984)
|March 20, 2009
PubMed
Summary
This summary is machine-generated.

Neoplastic angiogenesis, crucial for tumor growth and metastasis, is targeted by therapies like bevacizumab and multi-kinase inhibitors. These treatments inhibit vascular endothelial growth factor (VEGF) and other key receptors, showing promise in cancer treatment.

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Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Context:

  • Neoplastic angiogenesis is vital for tumor progression and metastasis.
  • Vascular Endothelial Growth Factor (VEGF) plays a critical role in tumor angiogenesis.
  • Targeting angiogenesis is a key strategy in cancer therapy.

Purpose:

  • To review the role of VEGF in neoplastic angiogenesis.
  • To discuss anti-angiogenic therapies targeting VEGF and other receptors.
  • To highlight the clinical application of these therapies in various cancers.

Summary:

  • Angiogenesis, the formation of new blood vessels, is essential for tumor growth and metastasis.
  • VEGF is a key mediator of neoplastic angiogenesis, making it a significant therapeutic target.
  • Bevacizumab, an anti-VEGF antibody, and multi-kinase inhibitors (sorafenib, sunitinib) targeting VEGFR and PDGFR are used to treat advanced renal-cell carcinoma and are being investigated in other tumors.

Impact:

  • Anti-angiogenic therapies offer a novel approach to cancer treatment by inhibiting tumor vascularization.
  • Targeting VEGF and related pathways can potentially improve chemotherapy delivery to tumors.
  • These therapies represent an important advancement in the management of advanced cancers, with ongoing research exploring broader applications.