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[The correlation between dendritic cell-specific ICAM-3 grabbing nonintegrin expression and Mycobacterium

Jie Zhang1, Shu-liang Guo, Yong-ai Luo

  • 1Department of Respiratory Medicine, First Affiliated Hospital, Chongqing Medical University, Chongqing, China.

Zhonghua Jie He He Hu Xi Za Zhi = Zhonghua Jiehe He Huxi Zazhi = Chinese Journal of Tuberculosis and Respiratory Diseases
|December 5, 2009
PubMed

Insights

Tuberculosis patients show higher expression of dendritic cell-specific ICAM-3 grabbing nonintegrin (DC-SIGN) and IL-10, leading to impaired T lymphocyte response and immune dysfunction.

Area of Science:

  • Immunology
  • Infectious Diseases

Context:

  • Tuberculosis remains a significant global health challenge.
  • Dendritic cells (DCs) play a crucial role in initiating immune responses.
  • DC-SIGN is a C-type lectin receptor expressed on DCs involved in pathogen recognition.

Purpose:

  • To investigate the correlation between DC-SIGN expression and Mycobacterium tuberculosis infection in humans.
  • To assess DC maturation markers, cytokine profiles, and T cell proliferation in tuberculosis patients.

Summary:

  • Tuberculosis patients exhibited significantly lower CD86 expression and higher DC-SIGN expression and mRNA levels on DCs compared to pneumonia patients and healthy individuals.
  • DCs from tuberculosis patients secreted higher levels of IL-10 and showed reduced capacity for T lymphocyte proliferation induction.
  • No significant differences were observed in CD11c, HLA-DR expression, or IL-12 levels among the groups.

Impact:

  • Elevated DC-SIGN expression and IL-10 secretion by DCs may contribute to decreased DC maturity and impaired T cell-mediated immunity in tuberculosis.
  • Findings suggest DC-SIGN as a potential factor in the pathogenesis of tuberculosis and immune evasion.
  • This research highlights the complex interplay between DC-SIGN, cytokine production, and immune response in tuberculosis.
Abstract

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