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Related Concept Videos

The Nucleus01:25

The Nucleus

The nucleus is a membrane-bound organelle that acts as a control center in a eukaryotic cell. It contains chromosomal DNA, which controls gene expression and precisely regulates the production of proteins within the cell. In contrast, the DNA inside the mitochondria and chloroplast only carries out functions that are specific to those organelles.
Arrangement of DNA within Nucleus
The regulation of gene expression inside the nucleus is dependent on many factors, including the DNA structure. The...
The Nucleus01:32

The Nucleus

The nucleus is a membrane-bound organelle that acts as a control center in a eukaryotic cell. It contains chromosomal DNA, which controls gene expression and precisely regulates the production of proteins within the cell. In contrast, the DNA inside the mitochondria and chloroplast only carries out functions that are specific to those organelles.
Arrangement of DNA within Nucleus
The regulation of gene expression inside the nucleus is dependent on many factors, including the DNA structure. The...
The Nucleus01:25

The Nucleus

The nucleus is a membrane-bound organelle that acts as a control center in a eukaryotic cell. It contains chromosomal DNA, which controls gene expression and precisely regulates the production of proteins within the cell. In contrast, the DNA inside the mitochondria and chloroplast only carries out functions that are specific to those organelles.
Arrangement of DNA within Nucleus
The regulation of gene expression inside the nucleus is dependent on many factors, including the DNA structure. The...
Additional Subnuclear Structures02:10

Additional Subnuclear Structures

The eukaryotic nucleus is a double membrane-bound organelle that contains nearly all of the cell’s genetic material in the form of chromosomes. It is rightly called the “brain” of the cell as it shoulders the responsibility of responding to various physiological processes, stress, altered metabolic conditions, and other cellular signals. 
The nucleus contains many membrane-less subnuclear organelles or nuclear bodies, such as nucleoli, Cajal bodies, speckles, paraspeckles, etc. These nuclear...
Nuclear Protein Sorting01:34

Nuclear Protein Sorting

Nuclear protein sorting is the selective trafficking of histones, polymerases, gene regulatory proteins into the nucleus and exporting RNAs and ribosomes to the cytosol. It is a tightly controlled process that regulates gene expression within a cell.
Proteins targeted to the nucleus carry nuclear localization signals or NLS recognized by import receptors in the cytosol. Similarly, proteins with nuclear export signals are recognized by export receptors. Import and export receptors are...
The Nucleolus02:55

The Nucleolus

The nucleolus is the most prominent substructure of the nucleus. When it was first discovered, it was considered to be an isolated organelle that forms fibrils and granules. In 1931, the relationship between the nucleolus and chromosomes was first described by Heitz. He observed that the appearance and size of nucleolus varies depending on the stage of the cell cycle. He also noticed constricted regions on different chromosomes clustered together at definite cell cycle stages. These regions,...

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Related Experiment Video

Updated: Jun 10, 2026

Intranuclear Microinjection of DNA into Dissociated Adult Mammalian Neurons
13:39

Intranuclear Microinjection of DNA into Dissociated Adult Mammalian Neurons

Published on: December 10, 2009

Networking the nucleus.

Indika Rajapakse1, David Scalzo, Stephen J Tapscott

  • 1Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.

Molecular Systems Biology
|July 29, 2010
PubMed
Summary
This summary is machine-generated.

Cell nuclei self-organize through complex network interactions during differentiation. Studying these nuclear networks reveals emergent order and dynamic function, offering insights into cell-specific signatures.

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Mapping Absolute DNA Density in Cell Nuclei using Single-molecule Localization Microscopy

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Related Experiment Videos

Last Updated: Jun 10, 2026

Intranuclear Microinjection of DNA into Dissociated Adult Mammalian Neurons
13:39

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Published on: December 10, 2009

Analyzing the Size, Shape, and Directionality of Networks of Coupled Astrocytes
10:10

Analyzing the Size, Shape, and Directionality of Networks of Coupled Astrocytes

Published on: October 4, 2018

Mapping Absolute DNA Density in Cell Nuclei using Single-molecule Localization Microscopy
10:57

Mapping Absolute DNA Density in Cell Nuclei using Single-molecule Localization Microscopy

Published on: November 11, 2025

Area of Science:

  • Cell biology
  • Systems biology
  • Genomics

Background:

  • Cell nuclei exhibit self-organization principles.
  • Complex interactions among nuclear components lead to cell-specific signatures.
  • Nuclear organization involves gene expression and chromosome topology.

Purpose of the Study:

  • To investigate the self-organization principles of cell nuclei during differentiation.
  • To understand how nuclear networks rewire and how higher-order structures emerge.
  • To explore the relationship between spatial and transcriptional information in nuclear networks.

Main Methods:

  • Analyzing the complex network of dynamical units within the cell nucleus.
  • Examining spatial relationships and transcriptional information to represent nuclear networks.
  • Formulating hypotheses on network rewiring rules during differentiation.

Main Results:

  • Cell nuclei are composed of interconnected dynamical units forming complex networks.
  • A cell-specific signature emerges from interactions, coordinating gene expression and chromosome topology.
  • Self-organizing systems can be simplified by studying element relationships within networks.

Conclusions:

  • Nuclear networks rewire according to simple rules during differentiation, leading to emergent order.
  • Studying interactions within and among nuclear networks is crucial for understanding nuclear organization and function.
  • This network-based approach provides a framework for investigating nuclear dynamics.