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Inhibition of vascular endothelial growth factor with a sequence-specific hypoxia response element antagonist.


ABSTRACT: Vascular endothelial growth factor (VEGF) and its receptors have been implicated as key factors in tumor angiogenesis that are up-regulated by hypoxia. We evaluated the effects of DNA-binding small molecules on hypoxia-inducible transcription of VEGF. A synthetic pyrrole-imidazole polyamide designed to bind the hypoxia response element (HRE) was found to disrupt hypoxia-inducible factor (HIF) binding to HRE. In cultured HeLa cells, this resulted in a reduction of VEGF mRNA and secreted protein levels. The observed effects were polyamide-specific and dose-dependent. Analysis of genome-wide effects of the HRE-specific polyamide revealed that a number of hypoxia-inducible genes were down-regulated. Pathway-based regulation of hypoxia-inducible gene expression with DNA-binding small molecules may represent a new approach for targeting angiogenesis.

SUBMITTER: Olenyuk BZ 

PROVIDER: S-EPMC534742 | biostudies-literature | 2004 Nov

REPOSITORIES: biostudies-literature

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Inhibition of vascular endothelial growth factor with a sequence-specific hypoxia response element antagonist.

Olenyuk Bogdan Z BZ   Zhang Guo-Jun GJ   Klco Jeffery M JM   Nickols Nicholas G NG   Kaelin William G WG   Dervan Peter B PB  

Proceedings of the National Academy of Sciences of the United States of America 20041119 48


Vascular endothelial growth factor (VEGF) and its receptors have been implicated as key factors in tumor angiogenesis that are up-regulated by hypoxia. We evaluated the effects of DNA-binding small molecules on hypoxia-inducible transcription of VEGF. A synthetic pyrrole-imidazole polyamide designed to bind the hypoxia response element (HRE) was found to disrupt hypoxia-inducible factor (HIF) binding to HRE. In cultured HeLa cells, this resulted in a reduction of VEGF mRNA and secreted protein l  ...[more]

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