PreprintCited by 23Genomics and Chromatin DynamicsChromatin Remodeling and CancerNuclear Structure and Function

Cohesin is required for long-range enhancer action

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Kane, Lauren, Williamson, Iain, Flyamer, Ilya M., Kumar, Yatendra, Hill, Robert E., Lettice, Laura A., Bickmore, Wendy A.·2021·bioRxiv (Cold Spring Harbor Laboratory)

Abstract

Summary: The mammalian genome is organised into topologically associating domains (TADs) that are formed through the process of cohesin-driven loop extrusion 1–3 and whose extent is constrained at TAD boundaries by orientation-dependent CTCF binding 4–7 . The large regulatory landscapes of developmental genes frequently correspond to TADs, leading to the hypothesis that TADs and/or loop extrusion are important for enhancers to act on their cognate gene 8,9 . However, it has proven hard to interpret the consequences of experimental disruption of TADs or loop-extrusion on gene regulation 3,6,10 , in part because of the difficulty in distinguishing direct from indirect effects on enhancer-driven gene expression. By coupling acute protein degradation with synthetic activation by targeted transcription factor recruitment in mouse embryonic stem cells, here we show that cohesin, but not CTCF, is required for activation of a target gene by distant distal regulatory elements. Cohesin is not required for activation directly at the promoter or activation from an enhancer located closer to the gene. Our findings support the hypothesis that chromatin compaction mediated by cohesin-mediated loop extrusion allows for genes to be activated by regulatory elements that are located many hundreds of kilobases away in the linear genome but suggests that cohesin is dispensable for more genomically close enhancers.

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  1. Sanborn, A.L., et al. Chromatin extrusion explains key features of loop and domain formation in wild-type and engineered genomes. Proc. Natl. Acad. Sci. U. S. A. 112, E6456-E6465 (2015).
  2. Moore, J.M., et al. Loss of Maternal CTCF Is Associated with Peri-Implantation Lethality of Ctcf Null Embryos. PLoS One 7, e34915 (2012).
  3. Paliou, C., et al. Preformed chromatin topology assists transcriptional robustness of Shh during limb development. Proc. Natl. Acad. Sci. U. S. A. 116, 12390-12399 (2019).
  4. Benabdallah, N.S., et al. SBE6: a novel long-range enhancer involved in driving sonic hedgehog expression in neural progenitor cells. Open Biol. 6, 160197 (2016).
  5. Jessica Z., et al. Nonlinear control of transcription through enhancer-promoter interactions. bioRxiv 04.22.440891 (2021)

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Authors
Kane, L., Williamson, I., Flyamer, I. M., Kumar, Y., Hill, R. E., Lettice, L. A., & Bickmore, W. A.
Affiliations
Institute of Genetics and Cancer (GB)
Corresponding author
Bickmore, Wendy A.
Venue
bioRxiv (Cold Spring Harbor Laboratory)
Publisher
openRxiv
Published
2021-06-24
OpenAlex
W3174482644
Cited by
23
References
11
Citations by year
2025: 1 · 2024: 1 · 2023: 3 · 2022: 13 · 2021: 5
Type
posted content
Language
en
Open access
Licence
cc-by-nc-nd
Locations
bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
Funders
  • University of Oxford
  • Medical Research Council (MC_UU_00007/8, MC_UU_00007/2)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chromatin Remodeling and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nuclear Structure and Function
Keywords
cohesin, topologically associating domains, loop extrusion, CTCF, chromatin condensation, distal regulatory elements, enhancer-gene interactions, mouse embryonic stem cells, transcription factor recruitment

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