The von Hippel-Lindau Gene and Protein in Tumorigenesis and Angiogenesis: A Potential Target for Therapeutic Designs

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Abstract:

The von Hippel-Lindau (VHL) protein is able to suppress tumor growth and to down-regulate many angiogenic factors, and is ubiquitously detected in adult and fetal tissues. This makes VHL an excellent target for therapeutic intervention. Observation of VHL alterations in sporadic tumors has been increasing as a result of examination of abnormalities other than intragenic mutations. These abnormalities include loss of chromosome 3p25, changes in the promoter, down-regulation of transcript, and changes in protein level. This article also presents the finding of differential expression of two common VHL proteins among rat tissues, suggesting tissue- and development-dependent functional difference between these two isoforms. Molecular pathways linking VHL to angiogenesis have been extensively characterized and mechanisms have been proposed to explain how altered VHL leads to tumorigenesis. VHL functions in the presence of oxygen and / or oxygen species. Two strategies are proposed here for anti-tumor and anti-angiogenic treatments of VHL-deficient tumors and those without detectable VHL intragenic mutations. One is to restore wild-type VHL function in VHL-deficient tumors and the other is to enhance wild-type VHL expression and activity in tumors under hypoxic conditions.

Keywords: alterations in sporadic tumors; angiogenesis; animals; functions; humans; therapeutic designs; tumorigenesis; von hippel-lindau

Document Type: Review Article

DOI: http://dx.doi.org/10.2174/0929867033456639

Affiliations: Laboratory of Comparative Carcinogenesis, Building 538, Room 205, National Cancer Institute at Frederick, National Institutes of Health, Frederick, MD 21702, USA.

Publication date: November 1, 2003

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  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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