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Related Concept Videos

Autoimmune Disorders01:29

Autoimmune Disorders

2.1K
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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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.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
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The bm12 Inducible Model of Systemic Lupus Erythematosus SLE in C57BL/6 Mice
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Slamf6 negatively regulates autoimmunity.

Ninghai Wang1, Marton Keszei1, Peter Halibozek1

  • 1Division of Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA.

Clinical Immunology (Orlando, Fla.)
|July 3, 2016
PubMed
Summary
This summary is machine-generated.

SLAMF6 acts as an inhibitory receptor controlling autoimmune responses. Its absence in CD4+ T cells triggers lupus-like disease, highlighting its crucial role in immune regulation.

Keywords:
AutoantibodyGVHSlamf6Tfh cells

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Area of Science:

  • Immunology
  • Autoimmunity
  • Molecular Biology

Background:

  • SLAM family (Slamf) receptors modulate immune responses and autoimmune diseases.
  • The specific role of Slamf6 in T cell-mediated autoimmunity requires further elucidation.

Purpose of the Study:

  • To investigate the function of Slamf6 in regulating CD4+ T cell-driven autoimmunity.
  • To determine the impact of Slamf6 deficiency on the development of lupus-like disease.

Main Methods:

  • Transfer of Slamf6-/- B6 CD4+ T cells into co-isogenic bm12 mice.
  • Analysis of autoantibody levels, Tfh cells, IFN-γ-producing CD4+ cells, and GC B cells.
  • Evaluation of Slamf1-/- and Slamf5-/- CD4+ T cells, and Slamf6-H1 isoform expression.

Main Results:

  • Slamf6-/- CD4+ T cell transfer induced SLE-like autoimmunity and elevated autoantibodies.
  • Increased percentages of Tfh cells, IFN-γ-producing CD4+ cells, and GC B cells were observed.
  • Slamf1 was requisite for Slamf6-/- CD4+ T cells to induce autoantibodies.

Conclusions:

  • Slamf6 functions as an inhibitory receptor that suppresses autoimmune responses.
  • Slamf6 deficiency in CD4+ T cells promotes lupus-like pathology.
  • Slamf1 plays a critical role in Slamf6-mediated regulation of autoantibody production.