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CD4+ T cells proliferation assay to analyze Mo-MDSCs suppressive function.

María Iglesias-Escudero1, David San Segundo2, Marcos López-Hoyos3

  • 1Immunology Department, Universitary Hospital Germans Trias i Pujol, Badalona, Spain.

Methods in Cell Biology
|March 30, 2024
PubMed
Summary

This study details a protocol for assessing myeloid-derived suppressor cells (MDSCs) and their capacity to inhibit T cell proliferation. This method aids in understanding MDSC function in immune regulation and disease.

Keywords:
CD4 T cellsMyeloid-derived suppressor cellsProliferationSuppression

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Myeloid regulatory cells (MRCs) include myeloid-derived suppressor cells (MDSCs), which regulate immune responses and are implicated in chronic diseases and cancer.
  • Distinguishing MDSCs from other myeloid cells is challenging due to a lack of specific markers, necessitating functional assays.

Purpose of the Study:

  • To provide a detailed in vitro protocol for assessing the T cell suppressive function of human monocytic MDSCs (Mo-MDSCs).
  • To enable functional characterization of Mo-MDSCs by analyzing their impact on T lymphocyte proliferation.

Main Methods:

  • Isolation of Mo-MDSCs and CD4+ T cells from peripheral blood.
  • In vitro co-culture of Mo-MDSCs with CD4+ T cells.
  • Assessment of T cell proliferation in response to Mo-MDSC co-culture.

Main Results:

  • The protocol allows for the evaluation of Mo-MDSC-mediated suppression of T cell proliferation.
  • Functional assessment provides insights into the regulatory capacity of Mo-MDSCs.

Conclusions:

  • This protocol offers a standardized method for functionally characterizing human Mo-MDSCs.
  • Understanding MDSC suppressive activity is crucial for research in cancer immunology and chronic inflammatory diseases.