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Related Concept Videos

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Related Experiment Video

Updated: Feb 9, 2026

Assessing the Multiple Dimensions of Engagement to Characterize Learning: A Neurophysiological Perspective
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Enhancer functions in three dimensions: beyond the flat world perspective.

Anita Göndör1, Rolf Ohlsson1

  • 1Department of Oncology and Pathology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.

F1000Research
|June 16, 2018
PubMed
Summary

Transcriptional enhancers, including super-enhancers, boost gene expression by contacting target promoters. Understanding how these DNA elements form and regulate chromatin loops in 3D nuclear architecture remains a key research question.

Keywords:
3DChromatinenhancersgene gatingnuclear architecture

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Area of Science:

  • Molecular Biology
  • Genetics
  • Genomics

Background:

  • Transcriptional enhancers regulate gene expression by interacting with promoters.
  • Super-enhancers are large clusters of enhancers that play critical roles in gene regulation.
  • Enhancer function is linked to physical contacts with target promoters, influencing RNA polymerase loading.

Purpose of the Study:

  • To explore current themes on how enhancers boost gene expression in three dimensions.
  • To identify unresolved questions regarding enhancer function and regulation within the nuclear architecture.

Main Methods:

  • Review of current literature on transcriptional enhancers and super-enhancers.
  • Analysis of mechanisms by which enhancers alter chromatin states.
  • Examination of the role of Pol II machinery in enhancer-promoter interactions.

Main Results:

  • Enhancers physically contact target promoters to facilitate transcription.
  • Enhancer-promoter interactions involve alterations in chromatin states.
  • Super-enhancers represent large regulatory regions with significant impact on gene expression.

Conclusions:

  • Enhancer-promoter looping is crucial for boosting gene expression.
  • The regulation of these chromatin loops and their role in 3D nuclear architecture requires further investigation.
  • Key questions remain regarding the precise mechanisms and regulation of enhancer function in gene transcription.