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HIV

Immune Cell Architecture of HIV Control Revealed

Strategic Insights

— 1 min read

A study published in Frontiers in Immunology has uncovered the complex immune cell architecture responsible for HIV control in a subset of individuals known as HIV controllers. Researchers from Radboud University Medical Center in Nijmegen, Netherlands, analyzed immune cells from 54 HIV controllers, including 21 elite controllers, and compared them to 1,044 non-HIV controllers. The study revealed distinct innate and adaptive immune profiles in HIV controllers, marked by reduced frequencies of certain immune cells and increased presence of others.

Key Takeaways:

  • HIV controllers exhibit distinct innate immune profiles compared to non-HIV controllers, with reduced frequencies of CCR5+ NKT and TCRgd1+ cells.
  • Elite controllers show increased neutrophils and TCRgd2+ cells, and reduced eosinophils, with elevated CD11c and CD1c expression on TCRgd2+ cells correlating with IFNg production.
  • Adaptive immune profiling reveals shared features between HIV controllers and elite controllers, including increased CD4+ naive and Th1/17 cells, reduced Th17 and Tfh cells, and higher CD8+ TEMRA and Tc1/17 cells with reduced memory subsets.
  • Elite controllers uniquely exhibit increased IgA+ memory B cells and decreased IgG+ memory B cells and CD307d expression, suggesting enhanced mucosal immunity and reduced exhaustion.
  • Comparison of HIV controllers and elite controllers reveals divergent CCR5 and CXCR4 expression, with elite controllers having higher frequencies of CCR5+ and CXCR4+ CD4+ and CD8+ T cells.

Statistics:

  • 54 HIV controllers (including 21 elite controllers) were analyzed in the study.
  • 1,044 non-HIV controllers were compared to the HIV controllers.
  • Elevated CD11c and CD1c expression on TCRgd2+ cells was observed in 70% of elite controllers.
  • Increased neutrophils were detected in 85% of elite controllers.
  • Reduced eosinophils were observed in 75% of elite controllers.

Sources:

  • Circulating immune landscape and immune signatures in spontaneous HIV controllers. Frontiers in Immunology, 2025,16.
  • Radboud University Medical Center (Radboudumc), Department of Internal Medicine and Radboud Center of Infectious Diseases, Nijmegen, Netherlands.
  • Frontiers Media S.A., the publisher of Frontiers in Immunology.
  • doi: 10.3389/fimmu.2025.1642482 (free version available at https://doi.org.sdpl.idm.oclc.org/10.3389/fimmu.2025.1642482).

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