Cited by 604Diffusion and Search DynamicsGenomics and Chromatin DynamicsPluripotent Stem Cells Research

Single-Molecule Dynamics of Enhanceosome Assembly in Embryonic Stem Cells

Open access
Chen, Jiji, Zhang, Zhengjian, Li, Li, Chen, Bi-Chang, Revyakin, Andrey, Hajj, Bassam, Legant, Wesley, Dahan, Maxime +4 more·2014·Cell

Abstract

Enhancer-binding pluripotency regulators (Sox2 and Oct4) play a seminal role in embryonic stem (ES) cell-specific gene regulation. Here, we combine in vivo and in vitro single-molecule imaging, transcription factor (TF) mutagenesis, and ChIP-exo mapping to determine how TFs dynamically search for and assemble on their cognate DNA target sites. We find that enhanceosome assembly is hierarchically ordered with kinetically favored Sox2 engaging the target DNA first, followed by assisted binding of Oct4. Sox2/Oct4 follow a trial-and-error sampling mechanism involving 84-97 events of 3D diffusion (3.3-3.7 s) interspersed with brief nonspecific collisions (0.75-0.9 s) before acquiring and dwelling at specific target DNA (12.0-14.6 s). Sox2 employs a 3D diffusion-dominated search mode facilitated by 1D sliding along open DNA to efficiently locate targets. Our findings also reveal fundamental aspects of gene and developmental regulation by fine-tuning TF dynamics and influence of the epigenome on target search parameters.

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Crossref · 10.1016/j.cell.2014.01.062

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  • Transcription factor binding to DNA appears to be very transient.

    “While it is clear that enhancers typically favour the more flexible models of sequence organisation, the degree of necessary cooperation between TFs is less obvious, particularly since TF binding to DNA appears to be very transient [113–117].”
  • Regulatory processes at the interface between enhancers and promoters have been estimated to occur in the order of tens of seconds.

    “Regulatory processes at the interface between enhancers and promoters have been estimated to occur in the order of tens of seconds41,43,46, consistent with the condition that intermediate regulatory steps should be faster than bursting kinetics (Fig. 3f).”

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Authors
Chen, J., Zhang, Z., Li, L., Chen, B.-C., Revyakin, A., Hajj, B., Legant, W., Dahan, M., Lionnet, T., Betzig, E., Tjian, R., & Liu, Z.
Affiliations
  • Howard Hughes Medical Institute (US)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Liu, Zhe
Venue
Cell
Publisher
Elsevier BV
Published
2014-03
Volume
156
Issue
6
Pages
1274-1285
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2028200156
Cited by
602
References
48
Citations by year
2026: 29 · 2025: 38 · 2024: 46 · 2023: 40 · 2022: 57 · 2021: 63 · 2020: 57 · 2019: 40 · 2018: 50 · 2017: 56 · 2016: 49 · 2015: 55 · 2014: 22
FWCI
25.03
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
Howard Hughes Medical Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Diffusion and Search Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Pluripotent Stem Cells Research
Keywords
SOX2, Oct4, embryonic stem cells, enhancer binding, ChIP-exo
MeSH terms
Animals, DNA, Enhancer Elements, Genetic, Kinetics, Epigenesis, Genetic, Chromatin Immunoprecipitation, Octamer Transcription Factor-3, Mice, Embryonic Stem Cells, Genome-Wide Association Study, SOXB1 Transcription Factors, Single-Cell Analysis

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