Cited by 162Genomics and Chromatin DynamicsGene Regulatory Network AnalysisProtein Structure and Dynamics

How subtle changes in 3D structure can create large changes in transcription

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Xiao, Jordan Yupeng, Hafner, Antonina, Boettiger, Alistair N·2021·eLife

Published version of a preprint

Abstract

Animal genomes are organized into topologically associated domains (TADs). TADs are thought to contribute to gene regulation by facilitating enhancer-promoter (E-P) contacts within a TAD and preventing these contacts across TAD borders. However, the absolute difference in contact frequency across TAD boundaries is usually less than 2-fold, even though disruptions of TAD borders can change gene expression by 10-fold. Existing models fail to explain this hypersensitive response. Here, we propose a futile cycle model of enhancer-mediated regulation that can exhibit hypersensitivity through bistability and hysteresis. Consistent with recent experiments, this regulation does not exhibit strong correlation between E-P contact and promoter activity, even though regulation occurs through contact. Through mathematical analysis and stochastic simulation, we show that this system can create an illusion of E-P biochemical specificity and explain the importance of weak TAD boundaries. It also offers a mechanism to reconcile apparently contradictory results from recent global TAD disruption with local TAD boundary deletion experiments. Together, these analyses advance our understanding of cis-regulatory contacts in controlling gene expression and suggest new experimental directions.

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  • Reducing the dose of dox tunes the effective rTetR-VP48 concentration as measured in vitro by an Electrophoretic Mobility Shift Assay.

    “By reducing the dose of dox, we tuned the effective rTetR-VP48 concentration36 as measured in vitro by an Electrophoretic Mobility Shift Assay (Fig. S4L–O)”

    From Single-molecule states link transcription factor binding to gene expression (2024) · cites this paper as [36]

    The Materials and methods section discusses transcription-factor concentration and enhancer occupancy only in general terms. Searches for rTetR-VP48, doxycycline or dox, and electrophoretic mobility shift assays found no passage in our copy addressing whether reducing dox tunes effective rTetR-VP48 concentration or how that was measured. The copy provides no page numbers for these passages. (LLM, conf=0.75)

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  1. Boettiger AN 2021 How subtle changes in 3D structure can create large changes in transcription Software Heritage swh:1:rev:8af1e7fcf1fa126908465558c4ef6d127000a9c8 https://archive.softwareheritage.org/swh:1:rev:8af1e7fcf1fa126908465558c4ef6d127000a9c8 PMC8352591 34240703

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Authors
Xiao, J. Y., Hafner, A., & Boettiger, A. N.
Affiliations
Stanford University (US)
Corresponding author
Boettiger, Alistair N
Venue
eLife
Published
2021-07-09
Volume
10
ISSN
2050-084X (ISSN-L)
OpenAlex
W3181995425
Cited by
162
References
109
Citations by year
2026: 18 · 2025: 29 · 2024: 37 · 2023: 36 · 2022: 26 · 2021: 16
FWCI
9.10
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institutes of Health (U01 DK127419)
  • NIH (DGM132935A)
  • Stanford University (GM008294, The Walter V. and Idun Berry Postdoctoral Fellowship Program)
  • Burroughs Wellcome Fund (CASI)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
Keywords
topologically associating domains, TAD boundaries, enhancer-promoter interactions, gene expression regulation, bistability, hysteresis, 3D genome organization, stochastic gene expression, promoter activity
MeSH terms
Animals, Chromatin, Gene Expression Regulation, Humans, Hypersensitivity, Promoter Regions, Genetic, Transcription, Genetic, Genome, Computational Biology, Mice

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