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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.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
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Development of Stem Cell-derived Antigen-specific Regulatory T Cells Against Autoimmunity
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Immunologic Profiling Suggests an Association Between Treg Cell Dysfunction and Pain in Knee Osteoarthritis.

Marie Binvignat1,2,3, Johanna Dubois1, Maria Marco Salvador1

  • 1Immunoregulation, Immunopathology, Immunotherapy I3 Laboratory, INSERM UMRS-959, Sorbonne Université, Paris, France.

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Summary

Regulatory T cells (Tregs) may be dysfunctional in osteoarthritis (OA) patients, contributing to OA-related pain. This study identified immune signatures linked to pain severity in OA, suggesting new therapeutic avenues.

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Area of Science:

  • Immunology
  • Systems Biology
  • Rheumatology

Background:

  • Osteoarthritis (OA) pain mechanisms are poorly understood.
  • Innate immunity's role in OA is known, but adaptive immunity, particularly regulatory T cells (Tregs), is understudied.
  • Understanding Treg involvement in OA pain is crucial for developing targeted therapies.

Purpose of the Study:

  • To investigate the role of adaptive immunity, specifically Tregs, in osteoarthritis-related pain.
  • To identify immunological signatures associated with OA pain severity.
  • To explore potential Treg dysfunction in OA pain.

Main Methods:

  • Performed multi-omics profiling (immunophenotyping, cytokine, transcriptomic, TCR analysis) on peripheral blood from 46 knee OA patients.
  • Sorted CD4+ Tregs and effector T cells (Teff) for detailed analysis.
  • Correlated immune markers with the Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain score.

Main Results:

  • Identified an immune signature linked to OA pain, with specific cytokines correlating with WOMAC pain scores.
  • Found correlations between Treg-associated cell subsets and pain severity, suggesting potential Treg dysfunction.
  • Upregulation of inflammasome-related genes and pro-inflammatory pathways in Tregs of high-pain OA patients.

Conclusions:

  • Systems immunology approach reveals potential associations between Treg dysfunction and OA-related pain.
  • Highlights novel hypotheses regarding the adaptive immune system's contribution to OA pain.
  • Suggests Tregs as a potential therapeutic target for OA pain management.