PreprintCited by 127Epigenetics and DNA MethylationGenomics and Chromatin DynamicsCancer-related gene regulation

CG methylated microarrays identify a novel methylated sequence bound by the CEBPB|ATF4 heterodimer that is active in vivo

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Mann, Ishminder K., Chatterjee, Raghunath, Zhao, Jianfei, He, Ximiao, Weirauch, Matthew T., Hughes, Timothy R., Vinson, Charles·2013·Genome Research

Abstract

To evaluate the effect of CG methylation on DNA binding of sequence-specific B-ZIP transcription factors (TFs) in a high-throughput manner, we enzymatically methylated the cytosine in the CG dinucleotide on protein binding microarrays. Two Agilent DNA array designs were used. One contained 40,000 features using de Bruijn sequences where each 8-mer occurs 32 times in various positions in the DNA sequence. The second contained 180,000 features with each CG containing 8-mer occurring three times. The first design was better for identification of binding motifs, while the second was better for quantification. Using this novel technology, we show that CG methylation enhanced binding for CEBPA and CEBPB and inhibited binding for CREB, ATF4, JUN, JUND, CEBPD, and CEBPG. The CEBPB|ATF4 heterodimer bound a novel motif CGAT|GCAA 10-fold better when methylated. The electrophoretic mobility shift assay (EMSA) confirmed these results. CEBPB ChIP-seq data using primary female mouse dermal fibroblasts with 50× methylome coverage for each strand indicate that the methylated sequences well-bound on the arrays are also bound in vivo. CEBPB bound 39% of the methylated canonical 10-mers ATTGC|GCAAT in the mouse genome. After ATF4 protein induction by thapsigargin which results in ER stress, CEBPB binds methylated CGAT|GCAA in vivo, recapitulating what was observed on the arrays. This methodology can be used to identify new methylated DNA sequences preferentially bound by TFs, which may be functional in vivo.

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Authors
Mann, I. K., Chatterjee, R., Zhao, J., He, X., Weirauch, M. T., Hughes, T. R., & Vinson, C.
Affiliations
  • National Institutes of Health (US)
  • Cincinnati Children's Hospital Medical Center (US)
  • University of Toronto (CA)
Corresponding author
  • Hughes, Timothy R.
  • Vinson, Charles
Venue
Genome Research
Published
2013-04-16
Volume
23
Issue
6
Pages
988-997
ISSN
1088-9051 (ISSN-L)
OpenAlex
W2078641190
Cited by
126
References
50
Citations by year
2026: 5 · 2025: 6 · 2024: 13 · 2023: 9 · 2022: 14 · 2021: 11 · 2020: 12 · 2019: 10 · 2018: 10 · 2017: 13 · 2016: 10 · 2015: 7 · 2014: 4 · 2013: 2
Type
posted content
Language
en
Open access
Locations
  • Genome Research (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
  • National Institutes of Health
  • National Cancer Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cancer-related gene regulation
Keywords
DNA methylation, CEBPB, ATF4, protein-DNA interactions, CEBPA, CREB, c-Jun, endoplasmic reticulum stress, thapsigargin, methylome
MeSH terms
Animals, Base Sequence, Binding Sites, Female, Fibroblasts, Protein Binding, Transcription Factors, CpG Islands, DNA Methylation, Thapsigargin, CCAAT-Enhancer-Binding Protein-beta, Mice, Activating Transcription Factor 4, Protein Multimerization, Position-Specific Scoring Matrices, Nucleotide Motifs

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