PreprintCited by 219Retinal Development and DisordersGenomics and Chromatin DynamicsRetinal Diseases and Treatments

CRX ChIP-seq reveals the cis-regulatory architecture of mouse photoreceptors

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Corbo, Joseph C., Lawrence, Karen A., Karlstetter, Marcus, Myers, Connie A., Abdelaziz, Musa, Dirkes, William, Weigelt, Karin, Seifert, Martin +4 more·2010·Genome Research

Abstract

Approximately 98% of mammalian DNA is noncoding, yet we understand relatively little about the function of this enigmatic portion of the genome. The cis-regulatory elements that control gene expression reside in noncoding regions and can be identified by mapping the binding sites of tissue-specific transcription factors. Cone-rod homeobox (CRX) is a key transcription factor in photoreceptor differentiation and survival, but its in vivo targets are largely unknown. Here, we used chromatin immunoprecipitation with massively parallel sequencing (ChIP-seq) on CRX to identify thousands of cis-regulatory regions around photoreceptor genes in adult mouse retina. CRX directly regulates downstream photoreceptor transcription factors and their target genes via a network of spatially distributed regulatory elements around each locus. CRX-bound regions act in a synergistic fashion to activate transcription and contain multiple CRX binding sites which interact in a spacing- and orientation-dependent manner to fine-tune transcript levels. CRX ChIP-seq was also performed on Nrl(-/-) retinas, which represent an enriched source of cone photoreceptors. Comparison with the wild-type ChIP-seq data set identified numerous rod- and cone-specific CRX-bound regions as well as many shared elements. Thus, CRX combinatorially orchestrates the transcriptional networks of both rods and cones by coordinating the expression of photoreceptor genes including most retinal disease genes. In addition, this study pinpoints thousands of noncoding regions of relevance to both Mendelian and complex retinal disease.

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Authors
Corbo, J. C., Lawrence, K. A., Karlstetter, M., Myers, C. A., Abdelaziz, M., Dirkes, W., Weigelt, K., Seifert, M., Benes, V., Fritsche, L. G., Weber, B. H. F., & Langmann, T.
Affiliations
  • Washington University in St. Louis (US)
  • Erasmus MC (NL)
Venue
Genome Research
Published
2010-08-06
Volume
20
Issue
11
Pages
1512-1525
ISSN
1088-9051 (ISSN-L)
OpenAlex
W2114715558
Cited by
219
References
87
Citations by year
2026: 6 · 2025: 12 · 2024: 16 · 2023: 16 · 2022: 14 · 2021: 15 · 2020: 16 · 2019: 7 · 2018: 12 · 2017: 8 · 2016: 12 · 2015: 15 · 2014: 22 · 2013: 16 · 2012: 11
Type
posted content
Language
en
Open access
Locations
  • Genome Research (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Digital Commons@Becker (Washington University School of Medicine) (submittedVersion)
  • RePub (Erasmus University Rotterdam) (submittedVersion, other-oa)
  • University of Regensburg Publication Server (University of Regensburg) (submittedVersion)
  • HighWire Press Open Archive (submittedVersion)
  • RePub (Erasmus University Rotterdam) (submittedVersion)
Funders
  • American Health Assistance Foundation
  • Deutsche Forschungsgemeinschaft
  • National Institutes of Health
  • National Eye Institute (F32EY029571, R01EY018826, EY018826)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Health Sciences › Medicine › Ophthalmology › Retinal Diseases and Treatments
Keywords
CRX, photoreceptors, cis-regulatory elements, transcription factor binding sites, non-coding genome, cone photoreceptors, rod photoreceptors, retinal disease genes, mouse retina
MeSH terms
Animals, Base Sequence, Binding Sites, Chromosome Mapping, Mice, Inbred C57BL, Molecular Sequence Data, Phylogeny, Protein Binding, Regulatory Sequences, Nucleic Acid, Sequence Homology, Nucleic Acid, Trans-Activators, Sequence Analysis, DNA, Retinal Cone Photoreceptor Cells, Mice, Knockout, Homeodomain Proteins, Chromatin Immunoprecipitation, Mice, High-Throughput Nucleotide Sequencing

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