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Related Concept Videos

T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

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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.
Naive T cells that have not yet encountered an antigen express two primary CD...
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Special Features of Adaptive Immunity01:20

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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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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.
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The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
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Interrogating Individual Autoreactive Germinal Centers by Photoactivation in a Mixed Chimeric Model of Autoimmunity
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Balancing immune activation with Itk.

Zenia Kaul1, Pamela L Schwartzberg1

  • 1National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.

Trends in Pharmacological Sciences
|October 2, 2024
PubMed
Summary
This summary is machine-generated.

Interleukin-2-inducible T cell kinase (Itk) is crucial for balancing immune responses. Inhibiting Itk may offer therapeutic benefits by modulating T helper 17 cells and regulatory T cells.

Keywords:
Ca(2+) signalingItkTh17 cellsTregscytokines

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Area of Science:

  • Immunology
  • Cellular Biology
  • T cell differentiation

Background:

  • Immune responses depend on a balance between pro-inflammatory CD4 T helper (Th) cells, like Th17 cells, and regulatory T cells (Tregs).
  • This balance is critical for maintaining immune homeostasis and preventing autoimmunity.
  • Dysregulation of this balance is implicated in various immune-related diseases.

Purpose of the Study:

  • To investigate the role of interleukin-2-inducible T cell kinase (Itk) in regulating the balance between Th17 cells and Tregs.
  • To explore the therapeutic potential of Itk inhibition in modulating immune responses.

Main Methods:

  • Utilizing mouse models and in vitro assays to study T cell differentiation and function.
  • Analyzing gene and protein expression related to Itk signaling pathways.
  • Assessing the impact of Itk inhibition on Th17 and Treg cell populations.

Main Results:

  • Itk activity was found to be a key regulator of the differentiation and function of both Th17 cells and Tregs.
  • Inhibition of Itk led to a modulation of the Th17/Treg cell balance.
  • Specific molecular mechanisms by which Itk influences T cell fate were elucidated.

Conclusions:

  • Itk plays a pivotal role in maintaining the critical balance between pro-inflammatory and regulatory CD4 T cells.
  • Targeting Itk represents a promising therapeutic strategy for immune-mediated disorders characterized by Th17/Treg imbalance.