Flow cytometry-based isolation of tumor-associated regulatory T cells and assessment of their suppressive potential

Regulatory T cells (Tregs) play a major role in establishing an immunosuppressive tumor microenvironment. In order to fully uncover their role and molecular regulation in tumor-bearing hosts, it is critical to combine phenotypical characterization with functional analyses. A standard method to deter...

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Bibliographic Details
Published in:Methods in enzymology Vol. 632; p. 259
Main Authors: Kos, Kevin, van Baalen, Martijn, Meijer, Denize A, de Visser, Karin E
Format: Journal Article
Language:English
Published: United States 2020
Subjects:
Animals
Cell Proliferation
Female
Flow Cytometry - methods
Fluorescent Antibody Technique - methods
Immune Tolerance
Lymphocyte Activation
Mammary Neoplasms, Animal - immunology
Mice
Neoplasms - immunology
T-Lymphocytes, Regulatory - immunology
Tumor Microenvironment
Flow cytometry
Immunosuppression
Suppression assay
Regulatory T cells
Cancer
ISSN:1557-7988, 1557-7988
Online Access:Get more information
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Summary:Regulatory T cells (Tregs) play a major role in establishing an immunosuppressive tumor microenvironment. In order to fully uncover their role and molecular regulation in tumor-bearing hosts, it is critical to combine phenotypical characterization with functional analyses. A standard method to determine the suppressive potential of Tregs is with an in vitro suppression assay, in which the impact of freshly isolated Tregs on T cell proliferation is assessed. The assay requires the isolation of substantial numbers of Tregs from tissues and tumors, which can be challenging due to low yield or cell damage during sample preparation. In this chapter, we discuss a flexible suppression assay which can be used to assess the suppressive potential of low numbers of murine Tregs, directly isolated from tumors. We describe methods for tissue preparation, flow cytometry-based sorting of Tregs and optimal conditions to perform a suppression assay, to obtain reliable and reproducible results.
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ISSN:1557-7988
1557-7988
DOI:10.1016/bs.mie.2019.07.035