Cited by 109Genomics and Chromatin DynamicsHeat shock proteins researchChromatin Remodeling and Cancer

Chromatin conformation remains stable upon extensive transcriptional changes driven by heat shock

Open access
Ray, Judhajeet, Munn, Paul R., Vihervaara, Anniina, Lewis, James J., Ozer, Abdullah, Danko, Charles G., Lis, John T.·2019·Proceedings of the National Academy of Sciences

Published version of a preprint

Abstract

Heat shock (HS) initiates rapid, extensive, and evolutionarily conserved changes in transcription that are accompanied by chromatin decondensation and nucleosome loss at HS loci. Here we have employed in situ Hi-C to determine how heat stress affects long-range chromatin conformation in human and Drosophila cells. We found that compartments and topologically associating domains (TADs) remain unchanged by an acute HS. Knockdown of Heat Shock Factor 1 (HSF1), the master transcriptional regulator of the HS response, identified HSF1-dependent genes and revealed that up-regulation is often mediated by distal HSF1 bound enhancers. HSF1-dependent genes were usually found in the same TAD as the nearest HSF1 binding site. Although most interactions between HSF1 binding sites and target promoters were established in the nonheat shock (NHS) condition, a subset increased contact frequency following HS. Integrating information about HSF1 binding strength, RNA polymerase abundance at the HSF1 bound sites (putative enhancers), and contact frequency with a target promoter accurately predicted which up-regulated genes were direct targets of HSF1 during HS. Our results suggest that the chromatin conformation necessary for a robust HS response is preestablished in NHS cells of diverse metazoan species.

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Crossref · 10.1073/pnas.1901244116

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  • This is not an inexorable chain of events; for example, stimulus-responsive enhancers may exhibit open chromatin and 3D interactions with their promoters before activation.

    “However, it should be emphasized that this is not an inexorable chain of events. For example, stimulus-responsive enhancers may exhibit open chromatin and 3D interactions with their promoters before activation92,93.”

    From Towards a comprehensive catalogue of validated and target-linked human enhancers (2020) · cites this paper as [93]

    The section “Pre-programmed chromatin architecture is conserved across metazoans” (page unavailable) reports that contacts between heat-shock-regulated genes and distal HSF1-bound elements were preformed before heat shock, supporting the pre-activation 3D-interaction claim. Our copy does not establish that those enhancers had open chromatin before activation; the Introduction discusses changes in chromatin accessibility upon heat shock instead. (LLM, conf=0.87)

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Cited by

Sorted by citations

Authors
Ray, J., Munn, P. R., Vihervaara, A., Lewis, J. J., Ozer, A., Danko, C. G., & Lis, J. T.
Affiliations
Cornell University (US)
Venue
Proceedings of the National Academy of Sciences
Published
2019-09-10
Volume
116
Issue
39
Pages
19431-19439
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2972670629
Cited by
109
References
16
Citations by year
2026: 10 · 2025: 11 · 2024: 15 · 2023: 13 · 2022: 18 · 2021: 21 · 2020: 15 · 2019: 5 · 2018: 1
FWCI
4.88
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
HHS | NIH | National Heart, Lung, and Blood Institute (U01HL129958)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chromatin Remodeling and Cancer
Keywords
heat shock, chromatin conformation, long-range chromatin interactions, topologically associating domains, HSF1, heat shock response, enhancers, RNA polymerase II, gene expression regulation, Drosophila cells, human cells, chromatin decondensation
MeSH terms
Heat Shock Transcription Factors, Animals, Binding Sites, Cell Line, Chromatin, Chromosomes, Drosophila, Enhancer Elements, Genetic, Biological Evolution, Gene Expression Regulation, Heat-Shock Proteins, Humans, Molecular Conformation, Promoter Regions, Genetic, Heat-Shock Response, K562 Cells, Gene Knockdown Techniques

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