Cited by 2,617Erythropoietin and Anemia TreatmentCancer, Hypoxia, and MetabolismGenomics and Chromatin Dynamics

A nuclear factor induced by hypoxia via de novo protein synthesis binds to the human erythropoietin gene enhancer at a site required for transcriptional activation

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Semenza, G L, Wang, G L·1992·Molecular and Cellular Biology

Abstract

We have identified a 50-nucleotide enhancer from the human erythropoietin gene 3'-flanking sequence which can mediate a sevenfold transcriptional induction in response to hypoxia when cloned 3' to a simian virus 40 promoter-chloramphenicol acetyltransferase reporter gene and transiently expressed in Hep3B cells. Nucleotides (nt) 1 to 33 of this sequence mediate sevenfold induction of reporter gene expression when present in two tandem copies compared with threefold induction when present in a single copy, suggesting that nt 34 to 50 bind a factor which amplifies the induction signal. DNase I footprinting demonstrated binding of a constitutive nuclear factor to nt 26 to 48. Mutagenesis studies revealed that nt 4 to 12 and 19 to 23 are essential for induction, as substitutions at either site eliminated hypoxia-induced expression. Electrophoretic mobility shift assays identified a nuclear factor which bound to a probe spanning nt 1 to 18 but not to a probe containing a mutation which eliminated enhancer function. Factor binding was induced by hypoxia, and its induction was sensitive to cycloheximide treatment. We have thus defined a functionally tripartite, 50-nt hypoxia-inducible enhancer which binds several nuclear factors, one of which is induced by hypoxia via de novo protein synthesis.

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  • HIF-2α, HIF-3α, ARNT2, and ARNTL exhibit pronounced cell type- and tissue-specific expression patterns.

    “In contrast, HIF-2α, HIF-3α, ARNT2, and ARNTL exhibit pronounced cell type– and tissue-specific expression patterns [29,63,64]”

    From HIF inhibition: Current strategies and clinical challenges (2026) · cites this paper as [63]

    The indexed copy does not provide a passage about expression of HIF-2α, HIF-3α, ARNT2, or ARNTL. Searches for those names and for tissue-specific expression returned material about the erythropoietin enhancer and references, but no discussion of the claimed expression patterns. (LLM, conf=0.72)

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Sorted by citations

Authors
Semenza, G. L., & Wang, G. L.
Affiliations
Johns Hopkins University (US)
Venue
Molecular and Cellular Biology
Published
1992-12
Volume
12
Issue
12
Pages
5447-5454
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W2135836641
Cited by
2,617
References
1
Citations by year
2026: 15 · 2025: 49 · 2024: 72 · 2023: 97 · 2022: 119 · 2021: 129 · 2020: 120 · 2019: 96 · 2018: 91 · 2017: 99 · 2016: 97 · 2015: 111 · 2014: 107 · 2013: 112 · 2012: 104
FWCI
10.74
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Biology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01dk039869-16)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK 39869)
Topics
  • Health Sciences › Medicine › Hematology › Erythropoietin and Anemia Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
erythropoietin gene, transcriptional activation, hypoxia response, de novo protein synthesis, nuclear factor binding, 3' flanking region, enhancer function, cycloheximide sensitivity, DNase I footprinting, mutagenesis
MeSH terms
Base Sequence, Binding Sites, Cell Line, Deoxyribonuclease I, DNA, Enhancer Elements, Genetic, Erythropoietin, Gene Expression Regulation, Humans, Molecular Sequence Data, Oxygen, Transcription Factors, Transcription, Genetic, Cell Hypoxia

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