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Na ve cd4 isolation kit

Manufactured by Miltenyi Biotec
Sourced in Germany

The Naïve CD4 isolation kit is a product designed to isolate naïve CD4+ T cells from human peripheral blood mononuclear cells (PBMCs). The kit utilizes a magnetic bead-based separation process to negatively select for naïve CD4+ T cells, retaining their native phenotype and functionality.

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4 protocols using na ve cd4 isolation kit

1

Induction of Th1 and iTreg Cells from Murine Naive CD4+ T Cells

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Naïve CD4 T cells were purified from splenocytes of WT mice using Miltenyi naïve CD4 isolation kit. For Th1 induction in Figure 1A, naïve CD4 T cells were cultured on 24-well plates coated with 1 μg/ml of αCD3/CD28 (Biolegend) plus IL-12 (0.5 ng/ml) and AS1842856 (or DMSO) for 72h. For iTreg induction in Figure 5, αCD3/CD28 (1 μg/ml) and recombinant mouse PD-L1-Ig chimera or human IgG1-Ig (10 μg/ml) (Biolegend) were used to coat plates. Naïve CD4 T cells were cultured on coated plates plus TGFβ (4 μg/ml) and AS1842856 (or DMSO) for 72h. For the expansion of human Th1 cells in Figure 4 CD, PBMCs from treatment-naïve MS patients were plated in flasks for 2–4 hrs to remove adherent cells. The suspension cells were then collected and activated with plate-bound αCD3/CD28 plus IL-12 (0.5 ng/ml) and AS1842856 (0.1 μM) or DMSO for 3 days.
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2

Isolation and Differentiation of Murine TH17 Cells

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Naïve CD4+ T cells were isolated from mouse spleens and lymph nodes using the Miltenyi Biotec Naïve CD4+ Isolation Kit according to the manufacturer’s protocol. Cells were differentiated using the CellXVivo Mouse TH17 Cell Differentiation Kit (R&D Systems, catalog no. CDK017) according to the manufacturer’s protocol. Cells were cultured for 5 days (refreshed the differentiation media at day 3). On day 5, cells were stimulated with Cell Stimulation Cocktail for 4 hours before cytokine staining and examined using flow cytometry.
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3

Naive CD4+ T Cell Isolation and Adoptive Transfer

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Naïve CD4+ T cells were purified from the spleen and mLN using the Naïve CD4 Isolation Kit according to the manufacturer’s instructions (Miltenyi, Germany). Purity was always greater than 98%. In some experiments as indicated in the figure legends, naïve CD4+ T cells were FACS-sorted on a FACSAria instrument (BD Biosciences) by the Flow Cytometry Core Facility at the WIBR. Purity was always greater than 98%. Purified CD4+ T cells were used in adoptive transfer (by intravenous injection) experiments or in vitro proliferation assays as indicated in the figure legends.
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4

Tofacitinib Modulates T Cell Proliferation

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PBMCs were isolated from healthy volunteer whole blood samples using Lymphoprep (Axis Shield, Dundee, United Kingdom) according to the manufacturer’s instructions. Pan T cells were isolated using a Pan T Cell isolation kit (Miltenyi Biotec, Bergisch Gladbach, Germany), stimulated with αCD3/αCD28 for 3 days in the presence of tofacitinib (10–500 nM) or dimethyl sulfoxide and the proliferation was measured using a WST-1 assay. For flow cytometric analyses, pan T cells were stained with CFSE prior to stimulation with αCD3/αCD28 for 5 days in the presence of tofacitinib (10–500 nM) or dimethyl sulfoxide. Human naïve CD4+ T cells were isolated from PMBCs using a naïve CD4+ isolation kit (Miltenyi Biotec). For cytokine and RNA measurements the cells were stimulated with αCD3/αCD28 and IL-12 (Th1), IL-4 (Th2) or IL-6, IL-1β, TGF-β, and IL-23 (Th17) for 5 days. Tofacitinib or dimethyl sulfoxide was either added at the start of the experiment or after the differentiation (day 5) and cells were restimulated with PHA. For flow cytometric analysis naïve CD4+ T cells were stained with CFSE prior to differentiation as mentioned above.
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