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Chromatin Position Affects Gene Expression

Chromatin Position Affects Gene Expression

Chromatin is the massive complex of DNA and proteins packaged inside the nucleus. The complexity of chromatin folding and how it is packaged inside the nucleus greatly influences access to genetic information. Generally, the nucleus' periphery is considered transcriptionally repressive, while the cell's interior is considered a transcriptionally active area.
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T Cell Activation and Clonal Selection

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T Cell Types and Functions

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Related Experiment Video

Updated: Jun 30, 2026

Combined Immunofluorescence and DNA FISH on 3D-preserved Interphase Nuclei to Study Changes in 3D Nuclear Organization

Combined Immunofluorescence and DNA FISH on 3D-preserved Interphase Nuclei to Study Changes in 3D Nuclear Organization

Published on: February 3, 2013

Spatial genome organization during T-cell differentiation.

S H Kim¹, P G McQueen, M K Lichtman

¹National Cancer Institute, NIH, Bethesda, MD 20892, USA.

Cytogenetic and Genome Research

|July 9, 2004

Summary

This summary is machine-generated.

Genome organization changes during T-cell differentiation. Centromeres move to the cell periphery, and specific chromosome regions reposition, revealing complex links between nuclear structure and gene regulation.

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Evaluation of T Follicular Helper Cells and Germinal Center Response During Influenza A Virus Infection in Mice

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Evaluation of T Follicular Helper Cells and Germinal Center Response During Influenza A Virus Infection in Mice

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Published on: June 27, 2020

Area of Science:

Cell Biology
Genomics
Developmental Biology

Background:

The spatial arrangement of the genome within the mammalian nucleus is non-random.
Nuclear genome organization influences gene expression during cellular development and differentiation.

Purpose of the Study:

To investigate the dynamic changes in spatial genome organization during mouse T-cell differentiation.
To correlate gene activity with nuclear positioning during T-cell development.

Main Methods:

Systematic analysis of spatial genome organization in differentiating mouse T-cells.
Tracking centromeres, chromosomes, and specific gene loci positions.

Main Results:

Significant global reorganization of centromeres, chromosomes, and gene loci observed during T-cell differentiation.
Centromeres shifted from internal to peripheral nuclear positions in differentiated CD4+ and CD8+ T-cells.
Chromosome 6 and its associated CD4/CD8 loci exhibited distinct positional changes correlating with differentiation pathways.

Conclusions:

Differentiation triggers substantial spatial genome reorganization in T-cells.
The interplay between dynamic genome topology and gene regulation is intricate and complex.