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Negative Regulation of Hypoxia-Inducible Genes by the von Hippel--Lindau Protein
Othon Iliopoulos, Andrew P. Levy, Chian Jiang, William G. Kaelin and Mark A. Goldberg
Proceedings of the National Academy of Sciences of the United States of America
Vol. 93, No. 20 (Oct. 1, 1996), pp. 10595-10599
Published by: National Academy of Sciences
Stable URL: http://www.jstor.org/stable/40197
Page Count: 5
You can always find the topics here!Topics: Messenger RNA, Carcinoma, Plasmids, Cell lines, Cell culture techniques, RNA, Cell growth, Complementary DNA, Oxygen, Tumors
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Inactivation of the von Hippel--Lindau protein (pVHL) has been implicated in the pathogenesis of renal carcinomas and central nervous system hemangioblastomas. These are highly vascular tumors which overproduce angiogenic peptides such as vascular endothelial growth factor/vascular permeability factor (VEGF/VPF). Renal carcinoma cells lacking wild-type pVHL were found to produce mRNAs encoding VEGF/VPF, the glucose transporter GLUT1, and the platelet-derived growth factor B chain under both normoxic and hypoxic conditions. Reintroduction of wild-type, but not mutant, pVHL into these cells specifically inhibited the production of these mRNAs under normoxic conditions, thus restoring their previously described hypoxia-inducible profile. Thus, pVHL appears to play a critical role in the transduction of signals generated by changes in ambient oxygen tension.
Proceedings of the National Academy of Sciences of the United States of America © 1996 National Academy of Sciences