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Updated: Jun 9, 2025

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Transient promoter interactions modulate developmental gene activation.

Sylvia Mahara1, Sonja Prüssing1, Valeriia Smialkovska1

  • 1Mechanisms of Genome Control, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, Heidelberg, Germany.

Molecular Cell
|October 30, 2024
PubMed
Summary
This summary is machine-generated.

Gene activation involves changes in 3D genome structure. This study reveals how dynamic changes in chromatin topology and distal regulatory elements (DREs) influence the magnitude of gene induction during cell differentiation.

Keywords:
Capture-Cchromatin organizationdistal regulatory elementsembryonic stem cell differentiationgene expressiongenome topologyhistone modificationstemporal dynamics

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Area of Science:

  • Genomics
  • Molecular Biology
  • Developmental Biology

Background:

  • Transcriptional induction is linked to chromatin topology changes.
  • Gene activation typically involves increased promoter-enhancer interactions.
  • The coordination of these topological changes during transcription remains unclear.

Purpose of the Study:

  • To investigate the relationship between 3D genome restructuring and transcriptional transitions.
  • To understand how chromatin topology dynamics are coordinated in time and space during transcriptional activation.
  • To identify distinct topological alterations associated with the magnitude of transcriptional induction.

Main Methods:

  • Combined chromatin conformation capture (3C) with transcription and chromatin profiling.
  • Utilized an embryonic stem cell (ESC) differentiation time course.
  • Performed genetic deletions to assess the role of distal regulatory elements (DREs) and interactions.

Main Results:

  • Identified distinct topological alterations correlating with the magnitude of transcriptional induction.
  • Detected transiently formed interactions critical for gene regulation.
  • Demonstrated that the formation and disruption of these interactions, involving DREs, contribute to transcriptional induction.

Conclusions:

  • Linked topological dynamics to the magnitude of transcriptional induction.
  • Identified a novel class of transcriptionally important distal regulatory elements (DREs).
  • Provided insights into the coordination of 3D genome restructuring during transcriptional activation.