Vascular targeting and the inhibition of angiogenesis

R Bicknell1

  • 1Imperial Cancer Research Fund, John Radcliffe Hospital, Oxford, U.K.

Insights

New anticancer therapies target tumour vasculature by exploiting differences between normal and tumour blood vessels. Anti-angiogenic strategies and gene therapy approaches are discussed, highlighting tumour vasculature as a promising target.

Area of Science:

  • Oncology
  • Vascular Biology
  • Biomedical Science

Background:

  • Tumours stimulate the formation of new blood vessels (angiogenesis) to support their growth.
  • Significant differences exist between the blood vessels supplying tumours and those in normal tissues.
  • Understanding these differences offers novel therapeutic opportunities.

Purpose of the Study:

  • To review the current landscape of anti-angiogenic therapies.
  • To explore strategies for targeting tumour vasculature.
  • To outline the potential of tumour vasculature as a target for anticancer gene therapy.

Main Methods:

  • Literature review of recent advances in tumour angiogenesis.
  • Analysis of current anti-angiogenic therapeutic approaches.
  • Evaluation of gene therapy strategies targeting tumour vasculature.

Main Results:

  • Advances in understanding tumour angiogenesis reveal new therapeutic avenues.
  • Targeting tumour vasculature presents a viable strategy for cancer treatment.
  • Anticancer gene therapy can leverage tumour vasculature as a specific target.

Conclusions:

  • Targeting tumour vasculature is a promising strategy in anticancer therapy.
  • Differences between normal and tumour vasculature can be exploited therapeutically.
  • Anticancer gene therapy offers a novel approach by targeting tumour vasculature.

Related Concept Videos

Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against specific...
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...
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...