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Circulating lymphocyte subsets linked to intracellular cytokine profiles in normal humans

M Matsui1, S Araya, H-Y Wang

  • 1Department of Neurology and Clinical Research Center, Center for Neurological Diseases, Utano National Hospital, Kyoto, Japan. matsuim@utano.hosp.go.jp

Clinical and Experimental Immunology
|November 18, 2003
PubMed

Insights

This study reveals associations between specific T-cell surface markers and intracellular cytokine production in healthy volunteers. Monitoring these lymphocyte subsets can offer insights into immune deviation and the pathogenesis of immune-mediated disorders.

Area of Science:

  • Immunology
  • Cell Biology
  • Flow Cytometry

Background:

  • Understanding the relationship between cell surface markers and intracellular cytokine profiles is crucial for dissecting immune responses.
  • Previous studies have explored T-cell subsets, but simultaneous analysis of cytokine production and surface antigen expression requires further investigation.

Purpose of the Study:

  • To investigate the association between intracellular cytokine profiles and the expression of various surface antigens on lymphocytes.
  • To explore potential immunoregulatory roles of specific lymphocyte subsets in non-pathological conditions.

Main Methods:

  • Simultaneous flow cytometric analysis of peripheral blood lymphocytes from 11 healthy volunteers.
  • Double-staining for CD4/CD8 with surface antigens (CD11a, CD25, CD26, CD29, CD45RA) or chemokine receptors (CCR3, CCR4, CCR5, CXCR3).
  • Intracellular cytokine detection (IFN-gamma, IL-2, TNF-alpha, IL-4) after stimulation with phorbol myristate acetate plus ionomycin.

Main Results:

  • CD4+CD29high cells associated with IFN-gamma and TNF-alpha production; CD4+CXCR3+ cells negatively correlated with IL-4, suggesting Th1 cell dominance.
  • CD4+CD45RA+ cells inversely correlated with IFN-gamma and TNF-alpha production.
  • CD8+CD11ahigh and CCR5+ cells showed inverse correlation with IL-2 production, indicating potential immunoregulatory roles.

Conclusions:

  • Monitoring lymphocyte subsets expressing functional surface antigens provides insights into immune deviation and Th1/Th2 cytokine production.
  • Combined analysis of surface markers and cytokine profiles may elucidate the pathogenesis of immune-mediated disorders.

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