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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.
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T Cell Types and Functions01:24

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When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
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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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Diversity of Antigen Receptors01:28

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Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
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Regulation of Hematopoietic Stem Cells01:01

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All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
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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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Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice
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Regulatory B cells: origin, phenotype, and function.

Elizabeth C Rosser1, Claudia Mauri1

  • 1Centre for Rheumatology Research, Division of Medicine, University College London, 5 University Street, London WC1E 6JF, UK.

Immunity
|April 23, 2015
PubMed
Summary
This summary is machine-generated.

Regulatory B (Breg) cells, crucial for immune tolerance, can arise in multiple subsets. Inflammation drives Breg cell differentiation at various developmental stages, impacting their phenotype and function.

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Regulatory B (Breg) cells are vital for maintaining immunological tolerance.
  • They exert immunosuppressive functions through cytokines like IL-10, IL-35, and TGF-β.
  • Distinct Breg cell populations emerge in response to varying inflammatory environments.

Purpose of the Study:

  • To explore the functional properties and phenotypes of Breg cells.
  • To investigate if Breg cells can develop at any stage of B cell development.
  • To determine if inflammation is the essential trigger for Breg cell differentiation.

Main Methods:

  • Review of current literature on Breg cell biology.
  • Analysis of factors influencing Breg cell differentiation and phenotype.
  • Discussion of Breg cell ontogeny and subset induction.

Main Results:

  • Inflammatory signals play a significant role in inducing distinct Breg cell populations.
  • Breg cell differentiation appears possible across different developmental stages.
  • Multiple Breg cell subsets can be generated in response to inflammation.

Conclusions:

  • Breg cell biology is complex, with diverse subsets arising from various developmental stages.
  • Inflammation is a key driver for Breg cell differentiation and functional specialization.
  • Further research into Breg cell ontogeny and subset heterogeneity is warranted.