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Related Concept Videos

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...
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...
Eukaryotic Compartmentalization01:37

Eukaryotic Compartmentalization

One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that carry out specialized functions. Since biological membranes are only selectively permeable to solutes, they help create a compartment with controlled conditions inside an organelle. These microenvironments are tailored to the organelle's specific functions and help isolate them from the surrounding cytosol.
For example, lysosomes in the animal cells...
Eukaryotic Compartmentalizations01:46

Eukaryotic Compartmentalizations

One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that carry out specialized functions. Since biological membranes are only selectively permeable to solutes, they help create a compartment with controlled conditions inside an organelle. These microenvironments are tailored to the organelle's specific functions and help isolate them from the surrounding cytosol.
For example, lysosomes in the animal cells...
Eukaryotic Compartmentalization01:46

Eukaryotic Compartmentalization

One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that carry out specialized functions. Since biological membranes are only selectively permeable to solutes, they help create a compartment with controlled conditions inside an organelle. These microenvironments are tailored to the organelle's specific functions and help isolate them from the surrounding cytosol.
For example, lysosomes in the animal cells...
Regulation of Nuclear Protein Sorting01:45

Regulation of Nuclear Protein Sorting

Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...

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Related Experiment Video

Updated: Jun 13, 2026

Visualization of Endoplasmic Reticulum Subdomains in Cultured Cells
16:43

Visualization of Endoplasmic Reticulum Subdomains in Cultured Cells

Published on: February 18, 2014

Resolving Sub-Nuclear Architecture from Compartments to Functional Domains.

Margherita Cavallo1, Adel Diaf1, Gloria Milanesi1

  • 1Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, 27100 Pavia, Italy.

International Journal of Molecular Sciences
|June 12, 2026
PubMed
Summary

The cell nucleus is a dynamic regulatory hub, not just a data store. Advanced imaging reveals how its architecture controls gene expression and genome stability.

Keywords:
LLPSchromatincytochemistryelectron microscopyimaginglncRNAsnuclear bodiesnuclear compartmentssuper-resolutiontranscription

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High-Resolution Complexome Profiling by Cryoslicing BN-MS Analysis
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High-Resolution Complexome Profiling by Cryoslicing BN-MS Analysis

Published on: October 15, 2019

Related Experiment Videos

Last Updated: Jun 13, 2026

Visualization of Endoplasmic Reticulum Subdomains in Cultured Cells
16:43

Visualization of Endoplasmic Reticulum Subdomains in Cultured Cells

Published on: February 18, 2014

High-Resolution Complexome Profiling by Cryoslicing BN-MS Analysis
09:33

High-Resolution Complexome Profiling by Cryoslicing BN-MS Analysis

Published on: October 15, 2019

Area of Science:

  • Cell Biology
  • Genomics
  • Microscopy

Background:

  • The cell nucleus is a complex organelle crucial for cellular functions.
  • Nuclear architecture significantly impacts gene transcription, RNA processing, and genome stability.
  • Understanding nuclear organization requires integrating molecular data with spatial resolution.

Purpose of the Study:

  • To review classical and emerging imaging strategies for studying nuclear organization.
  • To highlight how these methods reveal the spatial arrangement of nuclear components.
  • To demonstrate the link between nuclear architecture and genome function.

Main Methods:

  • Multiplexed and super-resolution light microscopy
  • Barcoding-based spatial methods
  • Live-cell imaging
  • Ultrastructural electron microscopy

Main Results:

  • These imaging techniques provide insights into the localization and dynamics of RNAs and genomic regions.
  • Distinct nuclear compartments are identified and characterized.
  • The spatial organization of the nucleus is shown to govern genome function.

Conclusions:

  • Advanced imaging technologies are revolutionizing the study of nuclear organization.
  • Understanding nuclear architecture is key to comprehending genome function and cellular processes.
  • Future research will continue to leverage these spatial methods to explore nuclear complexity.