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Related Concept Videos

Autoimmune Disorders01:29

Autoimmune Disorders

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Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune...
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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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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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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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Diversity of Antigen Receptors01:28

Diversity of Antigen Receptors

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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.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
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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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Related Experiment Video

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Author Spotlight: Novel Assay for Studying B-Cell Responses in Multiple Sclerosis Research
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B Cells and Autoantibodies in Multiple Sclerosis.

Anne-Katrin Pröbstel1,2, Nicholas S R Sanderson3,4, Tobias Derfuss5,6

  • 1Department of Neurology, University Hospital Basel, Petersgraben 4 & Clinical Neuroimmunology, Hebelstrasse 20, 4031 Basel, Switzerland. anne-katrin.proebstel@usb.ch.

International Journal of Molecular Sciences
|July 22, 2015
PubMed
Summary
This summary is machine-generated.

B cells are now recognized as key players in multiple sclerosis (MS) pathogenesis, not just antibody producers. Research highlights their complex roles in T cell regulation and inflammation, though MS-specific B cell autoantigens remain elusive.

Keywords:
B cellsautoantibodiesautoantigenmultiple sclerosisneuromyelitis opticapathogenesistherapy

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Area of Science:

  • Neuroimmunology
  • Autoimmunity
  • Cellular Immunology

Background:

  • T cells were historically central to multiple sclerosis (MS) pathogenesis.
  • Emerging evidence and therapeutic successes highlight a significant role for B cells in MS.

Purpose of the Study:

  • To review the clinical and experimental evidence for B cell involvement in MS pathogenesis.
  • To explore potential autoantigen targets for B cells in MS.
  • To critically evaluate current B cell-directed therapies for MS.

Main Methods:

  • Review of clinical trial data.
  • Analysis of experimental animal studies.
  • Synthesis of immunological research on B cell function in MS.

Main Results:

  • B cells are increasingly recognized for their multifaceted roles beyond antibody production, including T cell priming and regulation.
  • B cells can act as both pro-inflammatory and anti-inflammatory mediators in MS.
  • Despite extensive research, the specific autoantigens targeted by B cells in MS are not yet identified.

Conclusions:

  • B cells are critical players in multiple sclerosis pathogenesis, exhibiting complex immunomodulatory functions.
  • Identifying B cell autoantigens is crucial for advancing targeted MS therapies.
  • B cell-targeted therapies have shown clinical success, underscoring their therapeutic potential.