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Proteins Expressed on Tumor Endothelial Cells as Potential Targets for Anti-Angiogenic Therapy

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Author(s): Han-Chung Wu | Pi-Chun Li

Journal: Journal of Cancer Molecules
ISSN 1816-0735

Volume: 4;
Issue: 1;
Start page: 17;
Date: 2008;
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Keywords: angiogenesis | tumor endothelial cells | tumor endothelial marker | VEGF

ABSTRACT
The fact that solid tumors are dependent on blood supply has inspired many researchers to search for anti-angiogenic molecules that could be used therapeutically to halt the blood flow and rob tumors of nourishment and oxygen. Some promising preclinical and clinical results further confirmed the advantages of angiogenesis inhibitors. However, toxicity side effects and development of drug resistance in cancer cells have suggested the necessity to develop more specific and potent anti-angiogenic targets. Tumor blood vessels express some molecules that are not present in resting blood vessels in normal tissues. Many of these proteins, such as vascular endothelial growth factor receptor, integrins, delta-like ligand 4, EphB4, ephrin-B2, tumor endothelial markers 5 and 8, annexin A1 and fibronectin extra-domain B, are functionally important to tumor angiogenesis, and therefore can be taken as potential targets for anti-angiogenic therapy. In this review article, we discuss these potential target proteins expressed on the tumor endothelial cells and their possible therapeutic use.
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