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Related Concept Videos

B Cell Activation and Differentiation01:24

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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.
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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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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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Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure.
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Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
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Related Experiment Video

Updated: Apr 25, 2026

Combined Immunofluorescence and DNA FISH on 3D-preserved Interphase Nuclei to Study Changes in 3D Nuclear Organization
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Mi-2/NuRD chromatin remodeling complexes regulate B and T-lymphocyte development and function.

Carissa Dege1, James Hagman

  • 1Integrated Department of Immunology, National Jewish Health and School of Medicine, University of Colorado, Denver, Aurora, CO, USA.

Immunological Reviews
|August 16, 2014
PubMed
Summary
This summary is machine-generated.

Mi-2/nucleosomal remodeling and deacetylase (NuRD) complexes regulate gene expression and cell development. Their dysregulation in lymphopoiesis can lead to leukemogenesis, highlighting their critical role in immune cell formation.

Keywords:
B cellsT cellsgene regulationhematopoiesislineage commitment/specificationtranscription factors

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Area of Science:

  • Epigenetics
  • Molecular Biology
  • Immunology

Background:

  • Mi-2/nucleosomal remodeling and deacetylase (NuRD) complexes are crucial epigenetic regulators.
  • These complexes orchestrate chromatin structure and gene expression through histone modification, DNA binding, and nucleosome mobilization.
  • NuRD complexes play dual roles in gene transcription, acting as either activators or repressors depending on their genomic context.

Purpose of the Study:

  • To review the general properties of Mi-2/NuRD complexes.
  • To focus on the functions of Mi-2/NuRD in gene regulation within lymphocytes.
  • To examine the role of Mi-2/NuRD in lymphocyte development and hematopoiesis.

Main Methods:

  • Literature review of Mi-2/NuRD complex functions.
  • Analysis of NuRD's role in hematopoietic stem cell maintenance.
  • Examination of NuRD's involvement in B-cell and T-cell development pathways.

Main Results:

  • Mi-2/NuRD complexes are essential for maintaining hematopoietic stem cell pools.
  • They regulate critical stages of B-cell development, including differentiation inhibition and plasma cell formation.
  • NuRD complexes, in conjunction with Ikaros, influence T-cell development and peripheral responses.

Conclusions:

  • Mi-2/NuRD complexes are vital regulators of hematopoiesis and lymphopoiesis.
  • Dysregulation of NuRD during lymphocyte development is linked to leukemogenesis.
  • Understanding NuRD's functions is key to comprehending immune cell development and associated diseases.