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Related Concept Videos

Cellular Differentiation00:57

Cellular Differentiation

How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
A zygote is a...
Chromatin Position Affects Gene Expression02:35

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. 
Topologically Associated Domains (TADs)
The 3-dimensional positioning of chromatin in the nucleus influences the timing and level of...
Methods of Nuclear Reprogramming01:24

Methods of Nuclear Reprogramming

Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for injury repair.
Introduction to Nuclear Reprogramming01:14

Introduction to Nuclear Reprogramming

Nuclear reprogramming is the process of switching gene expression of one cell type to that of another cell type, usually from a differentiated cell state to an undifferentiated cell state. Differentiation occurs during processes such as development and morphogenesis, tissue regeneration, and malignancy. Cells can also be artificially induced to reprogram their gene expression by techniques such as nuclear transfer, induced pluripotency, and cell fusion. Such techniques have many applications in...
Inheritance of Chromatin Structures03:17

Inheritance of Chromatin Structures

Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying DNA...
Determination01:51

Determination

During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In contrast, determination...

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Updated: Jul 11, 2026

Exploiting Live Imaging to Track Nuclei During Myoblast Differentiation and Fusion
09:03

Exploiting Live Imaging to Track Nuclei During Myoblast Differentiation and Fusion

Published on: April 13, 2019

Gene dynamics and nuclear architecture during differentiation.

Christian Schöfer1, Klara Weipoltshammer

  • 1Center for Anatomy and Cell Biology, Medical University of Vienna, Schwarzspanierstr. 17, 1090 Vienna, Austria. christian.schoefer@meduniwien.ac.at

Differentiation; Research in Biological Diversity
|October 3, 2007
PubMed
Summary

Gene positioning within the nucleus is crucial for coordinated gene expression and cellular differentiation. Understanding chromatin dynamics reveals new insights into gene regulation during cell development.

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High-resolution Imaging of Nuclear Dynamics in Live Cells under Uniaxial Tensile Strain
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High-resolution Imaging of Nuclear Dynamics in Live Cells under Uniaxial Tensile Strain

Published on: June 2, 2019

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Last Updated: Jul 11, 2026

Exploiting Live Imaging to Track Nuclei During Myoblast Differentiation and Fusion
09:03

Exploiting Live Imaging to Track Nuclei During Myoblast Differentiation and Fusion

Published on: April 13, 2019

High-resolution Imaging of Nuclear Dynamics in Live Cells under Uniaxial Tensile Strain
09:20

High-resolution Imaging of Nuclear Dynamics in Live Cells under Uniaxial Tensile Strain

Published on: June 2, 2019

Area of Science:

  • Molecular Biology
  • Genetics
  • Cell Biology

Background:

  • Gene regulation involves complex mechanisms beyond DNA sequence.
  • Nuclear context and 3D genome organization influence gene expression.
  • Cellular differentiation involves dynamic gene activation and silencing.

Purpose of the Study:

  • To explore the role of nuclear context in coordinated gene expression.
  • To investigate the mechanisms and dynamics of chromatin positioning.
  • To enhance understanding of gene regulation during cellular differentiation.

Main Methods:

  • Analysis of gene positioning within the nucleus.
  • Studying dynamic changes in gene activation and silencing.
  • Investigating gene relocations relative to genomic regions and nuclear compartments.

Main Results:

  • Specific nuclear contexts are important for coordinated gene expression.
  • Gene relocations accompany alterations in gene activation/silencing during differentiation.
  • Chromatin positioning adds complexity to gene regulation.

Conclusions:

  • Nuclear organization is a key factor in gene regulation.
  • Chromatin dynamics are integral to cellular differentiation processes.
  • Further research into chromatin positioning will advance knowledge of gene regulation.