Cited by 371Genomics and Chromatin DynamicsCancer, Hypoxia, and MetabolismGenomics and Phylogenetic Studies

Evaluation of myc E-box phylogenetic footprints in glycolytic genes by chromatin immunoprecipitation assays

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Kim, Jung-whan, Zeller, Karen I., Wang, Yunyue, Jegga, Anil G., Aronow, Bruce J., O'Donnell, Kathryn A., Dang, Chi V.·2004·Molecular and Cellular Biology

Abstract

Prediction of gene regulatory sequences using phylogenetic footprinting has advanced considerably but lacks experimental validation. Here, we report whether transcription factor binding sites predicted by dot plotting or web-based Trafac analysis could be validated by chromatin immunoprecipitation assays. MYC overexpression enhances glycolysis without hypoxia and hence may contribute to altered tumor metabolism. Because the full spectrum of glycolytic genes directly regulated by Myc is not known, we chose Myc as a model transcription factor to determine whether it binds target glycolytic genes that have conserved canonical Myc binding sites or E boxes (5'-CACGTG-3'). Conserved canonical E boxes in ENO1, HK2, and LDHA occur in 31- to 111-bp islands with high interspecies sequence identity (>65%). Trafac analysis revealed another region in ENO1 that corresponds to a murine region with a noncanonical E box. Myc bound all these conserved regions well in the human P493-6 B lymphocytes. We also determined whether Myc could bind nonconserved canonical E boxes found in the remaining human glycolytic genes. Myc bound PFKM, but it did not significantly bind GPI, PGK1, and PKM2. Binding to BPGM, PGAM2, and PKLR was not detected. Both GAPD and TPI1 do not have conserved E boxes but are induced and bound by Myc through regions with noncanonical E boxes. Our results indicate that Myc binds well to conserved canonical E boxes, but not nonconserved E boxes. However, the binding of Myc to unpredicted genomic regions with noncanonical E boxes reveals a limitation of phylogenetic footprinting. In aggregate, these observations indicate that Myc is an important regulator of glycolytic genes, suggesting that MYC plays a key role in a switch to glycolytic metabolism during cell proliferation or tumorigenesis.

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  1. [31]Oster, S. K., C. S. Ho, E. L. Soucie, and L. Z. Penn. 2002. The myc oncogene: marvelously complex. Adv. Cancer Res. 84:81-154. [DOI] [PubMed] [Google Scholar]

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Authors
Kim, J.-W., Zeller, K. I., Wang, Y., Jegga, A. G., Aronow, B. J., O'Donnell, K. A., & Dang, C. V.
Affiliations
  • Graduate Program of Pathobiology
  • Department of Medicine
  • Graduate Program in Cellular and Molecular Medicine
  • University of Cincinnati (US)
  • Program in Human Genetics and Molecular Biology, The Johns Hopkins University School of Medicine
  • Johns Hopkins University (US)
Corresponding author
Dang, Chi V.
Venue
Molecular and Cellular Biology
Published
2004-07
Volume
24
Issue
13
Pages
5923-5936
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W2066807386
Cited by
371
References
47
Citations by year
2026: 10 · 2025: 14 · 2024: 21 · 2023: 26 · 2022: 28 · 2021: 28 · 2020: 22 · 2019: 17 · 2018: 22 · 2017: 19 · 2016: 15 · 2015: 15 · 2014: 17 · 2013: 14 · 2012: 14
FWCI
4.94
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Biology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (T32HL007525)
  • National Cancer Institute (CA 57341, R01CA057341, CA 51497, R37CA051497, R01CA051497)
  • National Institute of General Medical Sciences (T32GM07819)
  • U.S. National Library of Medicine (G13LM007515, LM07515)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
Keywords
c-Myc, E-box, phylogenetic footprinting, transcription factor binding sites, glycolytic genes, chromatin immunoprecipitation, alpha-enolase, HK2, LDHA, cancer metabolism, glycolysis, gene expression regulation
MeSH terms
Base Sequence, Binding Sites, Chromatin, Glycolysis, Humans, Lymphocytes, Phylogeny, Precipitin Tests, Regulatory Sequences, Nucleic Acid, Transcription Factors, Proto-Oncogene Proteins c-myc, Conserved Sequence, DNA Footprinting, E-Box Elements, Cell Line, Tumor

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