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Related Concept Videos

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.
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Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
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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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Development of Stem Cell-derived Antigen-specific Regulatory T Cells Against Autoimmunity
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Regulatory T cell-based therapies for autoimmunity.

Benjamine Arellano1, David J Graber1, Charles L Sentman1

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Autoimmune diseases cause widespread health issues due to immune system dysfunction. Enhancing regulatory T (Treg) cells offers a promising strategy for targeted autoimmune disease treatment with fewer side effects.

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Area of Science:

  • Immunology
  • Autoimmunity
  • Cellular Biology

Background:

  • Autoimmune disorders are chronic diseases impacting quality of life and are a leading cause of death.
  • These conditions arise from a loss of self-tolerance, triggering immune-mediated organ destruction.
  • Current treatments suppress inflammation but increase infection risk due to broad immunosuppression.

Purpose of the Study:

  • To review the function of regulatory T (Treg) cells in autoimmunity.
  • To explore the therapeutic potential of enhancing Treg cell activity for autoimmune diseases.
  • To discuss Treg-based strategies for antigen-specific immune suppression.

Main Methods:

  • Review of current literature on Treg cell biology and function.
  • Analysis of preclinical and clinical studies investigating Treg cell-based therapies.
  • Examination of the mechanisms underlying Treg cell dysfunction in autoimmune patients.

Main Results:

  • Treg cells possess inherent antigen-specific immune suppressive capabilities.
  • Dysfunctional Treg cells are a common feature in patients with autoimmune disorders.
  • Therapeutic strategies aimed at enhancing Treg cell function show promise.

Conclusions:

  • Boosting Treg cell function represents a potential therapeutic avenue for autoimmune diseases.
  • Targeting Treg cells may allow for specific immune suppression, preserving responses to other antigens.
  • Further research into Treg cell enhancement could lead to improved treatments for autoimmunity.