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Related Concept Videos

B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

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The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
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Cells of the Adaptive Immune Response01:23

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The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
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Lymphoid Cells and Tissues01:18

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Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
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Primary Lymphoid Organs01:16

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Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
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T Cell Activation and Clonal Selection01:22

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T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
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Chromatin Position Affects Gene Expression02:35

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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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Related Experiment Video

Updated: Jan 2, 2026

Combined Immunofluorescence and DNA FISH on 3D-preserved Interphase Nuclei to Study Changes in 3D Nuclear Organization
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3D genome organization during lymphocyte development and activation.

Anne van Schoonhoven1,2, Danny Huylebroeck2, Rudi W Hendriks1

  • 1Department of Pulmonary Medicine, Erasmus MC, Rotterdam, the Netherlands.

Briefings in Functional Genomics
|December 11, 2019
PubMed
Summary

The 3D genome organization guides gene transcription essential for lymphocyte identity and function. Understanding this interplay with transcription factors is crucial for controlling lymphocyte development and activation.

Keywords:
3D genome foldingB-cell differentiationT-cell differentiationchromosome conformationlymphocyte differentiationtranscription factors

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Area of Science:

  • Genomics
  • Immunology
  • Molecular Biology

Background:

  • Chromosomes possess a complex 3D architecture, including A/B compartments and topologically associating domains.
  • This 3D genome organization influences gene transcription and cellular identity.
  • Lymphocyte development and activation rely on precise gene expression control within a 3D chromatin landscape.

Purpose of the Study:

  • To review the interplay between 3D genome organization and transcriptional control in lymphocyte biology.
  • To highlight the role of transcription factors (TFs) in this process.
  • To emphasize the relevance for understanding lymphocyte identity and function.

Main Methods:

  • Review of current knowledge on 3D genome organization.
  • Analysis of transcriptional control mechanisms in lymphocytes.
  • Focus on the role of transcription factors (TFs).

Main Results:

  • 3D genome organization impacts gene transcription at multiple levels (compartments, domains, promoter-enhancer interactions).
  • Transcription factors are key regulators operating within the 3D chromatin landscape during lymphocyte development and activation.
  • Aberrant lymphocyte activity, linked to various morbidities, underscores the importance of understanding these regulatory mechanisms.

Conclusions:

  • The 3D genome organization is fundamental to regulating gene expression critical for lymphocyte identity.
  • Understanding the interplay between 3D genome structure and transcription factors is vital for controlling lymphocyte development and immune responses.
  • Further research in this area holds significant implications for human health and disease.