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Related Concept Videos

Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

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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.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
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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

Cells of the Adaptive Immune Response

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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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T Cell Types and Functions01:24

T Cell Types and Functions

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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.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
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Functions of the Lymphatic and Immune System01:28

Functions of the Lymphatic and Immune System

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The lymphatic system plays a crucial role in bolstering our immune system. It consists of a network of lymphoid organs, lymph, and lymphatic vessels that provide structural and functional support in safeguarding the body against pathogens such as viruses and bacteria.
The primary lymphoid organs, including the bone marrow and the thymus, serve as the maturation sites for lymphocytes. Secondary lymphoid organs, like the mucosa-associated lymphoid tissue, activate these lymphocytes and serve as...
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Lymphoid Cells and Tissues01:18

Lymphoid Cells and Tissues

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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.
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
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Related Experiment Video

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Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes
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B-lymphocyte tolerance and effector function in immunity and autoimmunity.

Wasif N Khan1, Jacqueline A Wright, Eden Kleiman

  • 1Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL, 33136, USA, wnkhan@med.miami.edu.

Immunologic Research
|December 3, 2013
PubMed
Summary
This summary is machine-generated.

B-cells are key to fighting infections and causing autoimmune diseases. Understanding their signaling pathways is crucial for developing new therapies targeting B-cell activation and function.

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Area of Science:

  • Immunology
  • Molecular Biology

Background:

  • B-lymphocytes are critical for host defense against pathogens and implicated in autoimmune diseases.
  • B-cell receptor and BAFF-R regulate self-tolerance and homeostasis.
  • Immune tolerance shapes the B-cell repertoire, leading to distinct B-cell populations.

Purpose of the Study:

  • To review the regulation of peripheral B-cell tolerance.
  • To discuss B-cell effector functions in immune responses.
  • To explore emerging therapies targeting B-cell signaling in autoimmune diseases.

Main Methods:

  • Review of gene expression and signaling networks.
  • Analysis of B-cell activation pathways.
  • Discussion of therapeutic strategies.

Main Results:

  • B-cell activation is pathogen-specific and modulated by T-cell and innate cell help.
  • Activated B cells produce antibodies and cytokines, influencing immune responses.
  • B cells play multifaceted roles in infection and autoimmunity.

Conclusions:

  • Gene expression and signaling networks are central to B-cell tolerance and function.
  • Targeting B-cell signaling offers potential therapeutic avenues for autoimmune diseases.