Related Experiment Video
Updated: Jul 18, 2026
08:49
A Multilabel Single Molecule Localization Microscopy Protocol for Investigation of Chromatin in the Dense Nuclear Environment
Published on: June 5, 2026
Chromatin domains and the interchromatin compartment form structurally defined and functionally interacting nuclear
Heiner Albiez1, Marion Cremer, Cinzia Tiberi
1Department of Biology II, LMU Biozentrum, Grosshaderner Strasse 2, 82152, Planegg-Martinsried, Germany.
Summary
The nucleus features a distinct interchromatin compartment (IC) that dynamically interacts with chromatin territories. This finding supports the chromosome territory-interchromatin compartment model of nuclear organization.
Area of Science:
- Cell Biology
- Molecular Biology
- Genetics
Background:
- Nuclear architecture is highly organized, yet consensus on global organization principles remains elusive.
- Conflicting models exist regarding the structure of the nucleus, specifically the interchromatin compartment (IC) and chromatin territories (CTs).
Purpose of the Study:
- To resolve conflicting views on nuclear architecture by investigating the existence and nature of the interchromatin compartment.
- To elucidate the relationship between chromatin condensation and the interchromatin compartment.
Main Methods:
- Analysis of chromatin higher-order domain compaction levels.
- Experimental manipulation of chromatin condensation and IC channel width.
- Electron microscopy.
Main Results:
- Chromatin exists in higher-order domains with compaction levels significantly exceeding 30 nm fibers.
- The interchromatin compartment (IC) is a dynamic, structurally distinct nuclear compartment.
- The IC is functionally linked to the chromatin compartment.
Conclusions:
- The study provides strong evidence supporting the chromosome territory-interchromatin compartment (CT-IC) model.
- The interchromatin compartment (IC) is a real and dynamic entity within the nucleus.
- Nuclear organization involves a complex interplay between condensed chromatin and the IC.
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