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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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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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The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
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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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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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Updated: May 6, 2026

Regulatory T cells: Therapeutic Potential for Treating Transplant Rejection and Type I Diabetes
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Regulatory B cells: the new "it" cell.

I Goode1, H Xu1, S T Ildstad1

  • 1Institute for Cellular Therapeutics, University of Louisville, Louisville, Kentucky, USA.

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|November 13, 2013
PubMed
Summary
This summary is machine-generated.

Regulatory B cells (Breg) are crucial immune cells with a suppressive function. Their deficiency exacerbates autoimmune diseases, highlighting their therapeutic potential in conditions like lupus and arthritis.

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Regulatory B cells (Breg) are a distinct B cell subset with immunosuppressive functions.
  • Their role in maintaining immune homeostasis and preventing autoimmunity is increasingly recognized.
  • Interleukin 10 (IL-10) is a key cytokine produced by Breg, and intracellular staining for IL-10 is a reliable identification method.

Purpose of the Study:

  • To review the multifaceted role of Breg in the immune system.
  • To summarize recent findings on Breg cell surface markers.
  • To elucidate the involvement of Breg in the development and progression of autoimmune diseases and transplantation tolerance.

Main Methods:

  • Review of existing literature on Breg function, development, and association with diseases.
  • Analysis of experimental data from murine models and human studies.
  • Focus on intracellular staining for IL-10 as a consistent identification marker.

Main Results:

  • Breg deficiency is linked to the exacerbation of autoimmune conditions such as collagen-induced arthritis, systemic lupus erythematosus, and experimental autoimmune encephalomyelitis in mice.
  • Recent studies have identified novel cell surface markers associated with Breg populations.
  • Breg play a critical role in immune tolerance, particularly in the context of transplantation.

Conclusions:

  • Regulatory B cells are vital for immune suppression and preventing autoimmunity.
  • Understanding Breg development and function offers potential therapeutic strategies for autoimmune diseases.
  • Breg are key players in inducing tolerance, with implications for transplant outcomes.