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Each human somatic cell contains 6 billion base pairs of DNA. Each base pair is 0.34 nm long, meaning each diploid cell contains a staggering 2 meters of DNA. This long DNA strand is packed inside a nucleus measuring only 10-20 microns in diameter with the help of specialized DNA-binding proteins called histones. Together they form a compact DNA-protein complex called chromatin. The chromatin is further compacted into higher-order structures. The highest level of compaction is achieved during...
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Each human somatic cell contains 6 billion base-pairs of DNA. Each base-pair is 0.34 nm long, which means that each diploid cell contains a staggering 2 meters of DNA. How is such a long DNA strand packed inside a nucleus measuring only 10 - 20 microns in diameter? 
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3D Multicolor DNA FISH Tool to Study Nuclear Architecture in Human Primary Cells
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Evolving methodologies and concepts in 4D nucleome research.

Thomas M Sparks1, Izabela Harabula1, Ana Pombo1

  • 1Epigenetic Regulation and Chromatin Architecture Group, Berlin Institute for Medical Systems Biology, Max-Delbrück Centre for Molecular Medicine, Hannoversche Strasse 28, 10115 Berlin, Germany; Institute for Biology, Humboldt University of Berlin, Berlin, Germany.

Current Opinion in Cell Biology
|May 31, 2020
PubMed
Summary
This summary is machine-generated.

The 3D genome

Keywords:
3D topologyGenomeImagingLong-range chromatin contactsSingle-cell biology

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Area of Science:

  • Genomics
  • Molecular Biology
  • Cell Biology

Background:

  • The genome's spatial and temporal regulation is crucial for cell function.
  • The 3D genome comprises a complex hierarchical network of structures.
  • Epigenetic and transcriptional mechanisms regulate chromatin states.

Purpose of the Study:

  • To review recent advancements in 4D nucleome methodologies.
  • To provide a perspective on the future directions of 3D genome research.
  • To highlight the integration of multiomics information for understanding genome organization.

Main Methods:

  • Review of current 4D nucleome methodologies.
  • Analysis of technological developments for increased genomic resolution.
  • Integration of multiomics data to identify 3D genome players.

Main Results:

  • The 3D genome involves compartments, topologically associating domains, and loops.
  • Technological advances enable higher resolution and single-cell analysis of genome folding.
  • Multiomics integration offers mechanistic insights into genome organization.

Conclusions:

  • Future technologies will enhance our understanding of in vivo genome dynamics.
  • Further research will identify new 3D genome players and regulatory mechanisms.
  • The 4D nucleome field is rapidly evolving with significant future potential.