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Evidence for the Presence of a Guanine Quadruplex Forming Region within a Polypurine Tract of the Hypoxia Inducible Factor 1α Promoter
Abstract
The promoter of the hypoxia inducible factor 1 alpha (HIF-1alpha) gene has a polypurine/polypyrimidine tract (-65 to -85) overlapping or adjacent to several putative transcription factor binding sites, and we found that mutagenesis of this region diminished basal HIF-1alpha expression. Oligonucleotides representing this region of the HIF-1alpha promoter were analyzed by electrophoretic mobility shift, chemical probing, circular dichroism, and DNA polymerase arrest assays. The guanine-rich strand was found to form a parallel, unimolecular quadruplex in the presence of potassium that was further stabilized by two known quadruplex binding compounds, the cationic porphyrin TmPyP4 and the natural product telomestatin, while TmPyP2, a positional isomer of TmPyP4, did not stabilize quadruplex formation. These data suggest that a quadruplex structure may form in a region of the HIF-1alpha promoter that regulates basal HIF-1alpha expression.
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Cites
Targeting HIF-1 for cancer therapy
Semenza, G. L. (2003) · Nature Reviews Cancer · doi:10.1038/nrc1187 · Cited by 6,717
HIF hydroxylation and the mammalian oxygen-sensing pathway
Safran, M., & Kaelin, W. G. (2003) · Journal of Clinical Investigation · doi:10.1172/jci200318181 · Cited by 365
Cited by
A hitchhiker's guide to G-quadruplex ligands
Monchaud, D., & Teulade-Fichou, M.-P. (2008) · Org. Biomol. Chem. · doi:10.1039/b714772b · Cited by 788
Highly Efficient G-Quadruplex Recognition by Bisquinolinium Compounds
De Cian, A., DeLemos, E., Mergny, J.-L., Teulade-Fichou, M.-P., & Monchaud, D. (2007) · Journal of the American Chemical Society · doi:10.1021/ja067352b · Cited by 451
Chemical and structural studies provide a mechanistic basis for recognition of the MYC G-quadruplex
Calabrese, D. R., Chen, X., Leon, E. C., Gaikwad, S. M., Phyo, Z., Hewitt, W. M., Alden, S., Hilimire, T. A., He, F., Michalowski, A. M., et al. (2018) · Nature Communications · doi:10.1038/s41467-018-06315-w · Cited by 172
Metadata
- Authors
- De Armond, R., Wood, S., Sun, D., Hurley, L. H., & Ebbinghaus, S. W.
- Venue
- Biochemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-11-12
- Volume
- 44
- Issue
- 49
- Pages
- 16341-16350
- ISSN
- 0006-2960 (ISSN-L)
- 1520-4995
- OpenAlex
- W2052024409
- Cited by
- 285
- References
- 2
- FWCI
- 5.88
- Type
- journal article
- Language
- en
- Open access
- closed
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- De Armond, R., Wood, S., Sun, D., Hurley, L. H., & Ebbinghaus, S. W. (2005). Evidence for the Presence of a Guanine Quadruplex Forming Region within a Polypurine Tract of the Hypoxia Inducible Factor 1α Promoter. Biochemistry. https://doi.org/10.1021/bi051618u
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