Immunophenotyping of lymphocyte, monocyte and dendritic cell subsets in normal rhesus macaques by 12-color flow

Patrick Autissier1, Caroline Soulas, Tricia H Burdo

  • 1Department of Biology, Boston College, Higgins Hall 468, 140 Commonwealth Avenue, Chestnut Hill, MA 02467, USA.

Insights

This study developed a 12-color flow cytometry panel to simultaneously analyze rhesus macaque immune cells. This comprehensive panel aids in understanding immune responses during infectious diseases like SIV.

Area of Science:

  • Immunology
  • Primate Research
  • Flow Cytometry

Background:

  • Monitoring immune cell dynamics in rhesus macaques is vital for infectious disease research.
  • Existing methods often require multiple panels, limiting simultaneous analysis.

Purpose of the Study:

  • To develop and validate a single 12-color flow cytometry panel for comprehensive immune cell phenotyping in rhesus macaques.
  • To enable simultaneous analysis of lymphocyte, monocyte, and dendritic cell subsets.

Main Methods:

  • A 12-color flow cytometry panel was designed using a cocktail of 12 antibodies.
  • Blood samples from healthy rhesus macaques were analyzed.
  • Data were compared against smaller, lineage-specific panels.

Main Results:

  • The panel successfully identified major immune cell subsets, including T lymphocytes (CD4+, CD8+), B cells, NK cells, NKT cells, and monocyte subsets.
  • Four distinct Lin-HLA-DR+ subsets were identified: CD34+ hematopoietic stem cells, plasmacytoid dendritic cells (DCs), and two types of myeloid DCs (CD11c+ CD16+ and CD11c(-/dim) CD1c+).
  • The 12-color panel provided comparable and comprehensive data to smaller panels.

Conclusions:

  • A single, multiparameter flow cytometry panel allows for the simultaneous enumeration of key immune cell populations in rhesus macaques.
  • This approach offers a broader perspective on immune responses, particularly during Simian Immunodeficiency Virus (SIV) infection.
  • It facilitates a better understanding of individual cell types' roles in AIDS pathogenesis.

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