Treg Isolation
Treg Isolation - Related Videos
15:33
Adenoviral Transduction of Naive CD4 T Cells to Study Treg Differentiation
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Cited by 7 •
2013
Adenoviral gene transfer into naive CD4 T cells with transgenic expression of the Coxsackie adenovirus receptor enables the molecular analysis of regulatory T cell differentiation in vitro.
12:59
Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes
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Cited by 33 •
2013
With effector functions distinct from other T cell subsets, Th17 cells have been centrally implicated in inflammatory autoimmunity. This in vitro Th17 differentiation protocol provides a means to determine whether naïve CD4+ T lymphocytes can differentiate into Th17 cells, and to further examine their role in autoimmunity and host response.
07:12
Mouse Naïve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets
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Cited by 71 •
2015
Naïve CD4+ T cells polarize to various subsets depending on the environment at the time of activation. The differentiation of naïve CD4+ T cells to various effector subsets can be achieved in vitro through the addition of T cell receptor stimuli and specific cytokine signals.
08:09
Vasodilation of Isolated Vessels and the Isolation of the Extracellular Matrix of Tight-skin Mice
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Cited by 1 •
2017
We describe the isolation of cardiac extracellular matrix from C57Bl/6J control mice, tight-skin mice, and tight-skin mice treated with the IRF5 inhibitory peptide. We also describe the vasodilation studies on the isolated vessels from C57Bl/6J, tight-skin mice and tight-skin mice treated with the IRF5 inhibitory peptide.
07:12
Neutrophil Isolation Protocol
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Cited by 173 •
2008
Neutrophils are among the first cells to arrive on the site of inflammatory immune response, and their functions and mechanisms have been studied extensively in vitro. We demonstrate a standard density gradient separation method to isolate human neutrophils from whole blood using commercially available separation media.
FAQs
Antibody-coated magnetic beads provide the initial enrichment by capturing cells with the targeted surface phenotype, particularly CD4 and CD25. Flow cytometry then examines marker combinations and can sort cells using CD4, CD25, and FOXP3. This layered strategy separates selection from verification, helping investigators obtain a population suitable for downstream functional or molecular analyses.
CD25 alone does not establish that every recovered cell is a regulatory T cell, so adding CD4 and FOXP3 improves phenotypic discrimination. Conventional T-cell contamination matters because those cells may not share regulatory activity and can alter assay or molecular readouts. Marker-based refinement therefore strengthens the link between the isolated population and the biological conclusions.
Suppression assays test whether the isolated cells inhibit responder T-cell proliferation and cytokine production. These two readouts provide complementary evidence: proliferation reflects responder-cell expansion, whereas cytokine production reflects inflammatory functional output. Comparing suppression across preparations can reveal differences in regulatory activity, rather than relying only on the number or apparent purity of recovered cells.
A typical workflow begins with antibody-coated magnetic-bead enrichment of CD4+CD25+ cells from a mixed immune-cell population. The enriched fraction then undergoes flow-cytometric analysis or sorting with CD4, CD25, and FOXP3 markers. Researchers can subsequently use the isolated cells in suppression assays or molecular studies, depending on whether the goal is functional or molecular characterization.
When the objective is functional comparison, preserving a clearly defined phenotype is essential before placing cells into suppression assays. If conventional T cells remain in the preparation, measured proliferation or cytokine effects may reflect mixed-cell behavior rather than Treg activity alone. Purity assessment by flow cytometry therefore serves as an interpretive safeguard, not merely a technical endpoint.
Within Immunology and Infection, isolated Tregs help investigators examine how immune tolerance changes during infection and how regulatory activity relates to disease progression. The same approach supports studies of autoimmunity, transplantation, and cancer, including questions about altered Treg abundance or activity and possible effects on therapeutic responses. Its value lies in connecting cell phenotype with immune regulation in disease contexts.