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3 protocols using nk1.1 bv605

1

Isolation of Murine and Human Intestinal Cells

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After 4 days of murine and 7 days of human co-culture, Matrigel was disrupted and cells were collected into 15ml falcon tubes. For murine ILC1 cultures Matrigel disruption was not required, and cells were gently rinsed from the bottom of the plate using PBS+2%FCS. Samples were rinsed with PBS, then dissociated in TrypLe (Gibco) for 20mins at 37°C. The sorting buffer after this step contained DNAse (250µg/ml), EDTA (1μl/ml), and HEPES (1μl/ml) to maintain single epithelial cells and avoid clumping. Cells were titruated gently, centrifuged and resuspended in sorting buffer. Cells were then filtered (70µm), having pre-coated the filter with sorting buffer to minimize cell loss, and either rinsed with PBS for fixable Live/Dead staining (UV or nearInfraRed, Thermofisher), or stained with EpCAM, CD45, and the requisite combination of antibodies for the experiment, and analyzed (BD Fortessa) or sorted (BD ARIA3 Fusion & BD Aria 2 using BD FACS Diva 8.0.1 software). Isolation of murine IEC and ILC1 following co-culture was performed using EpCAM–APC Cy7 (G8.8, BioLegend), CD45-BV510 (30-F11, bioLegend), NK1.1 BV605 (PK136, BioLegend), CD44-PE (IM7, BioLegend). Isolation of human IEC, FB, and hILC1 used fixable Live/Dead-UV or Live/Dead-nIR CD45-eFluor450(HI30) Invitrogen, EpCAM-FITC (9C4; BioLegend), CD90-PE/Dazzle (Thy1; BioLegend)
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2

Isolation of Murine and Human Intestinal Cells

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After 4 days of murine and 7 days of human co-culture, Matrigel was disrupted and cells were collected into 15ml falcon tubes. For murine ILC1 cultures Matrigel disruption was not required, and cells were gently rinsed from the bottom of the plate using PBS+2%FCS. Samples were rinsed with PBS, then dissociated in TrypLe (Gibco) for 20mins at 37°C. The sorting buffer after this step contained DNAse (250µg/ml), EDTA (1μl/ml), and HEPES (1μl/ml) to maintain single epithelial cells and avoid clumping. Cells were titruated gently, centrifuged and resuspended in sorting buffer. Cells were then filtered (70µm), having pre-coated the filter with sorting buffer to minimize cell loss, and either rinsed with PBS for fixable Live/Dead staining (UV or nearInfraRed, Thermofisher), or stained with EpCAM, CD45, and the requisite combination of antibodies for the experiment, and analyzed (BD Fortessa) or sorted (BD ARIA3 Fusion & BD Aria 2 using BD FACS Diva 8.0.1 software). Isolation of murine IEC and ILC1 following co-culture was performed using EpCAM–APC Cy7 (G8.8, BioLegend), CD45-BV510 (30-F11, bioLegend), NK1.1 BV605 (PK136, BioLegend), CD44-PE (IM7, BioLegend). Isolation of human IEC, FB, and hILC1 used fixable Live/Dead-UV or Live/Dead-nIR CD45-eFluor450(HI30) Invitrogen, EpCAM-FITC (9C4; BioLegend), CD90-PE/Dazzle (Thy1; BioLegend)
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3

Multiparametric Flow Cytometry of Murine Immune Cells

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Blood was taken routinely from anesthetized mice (retrobulbar venous plexus). Spleen and tumor tissues were dissociated. Single cells were stained with a panel of conjugated monoclonal antibodies (mAb, 0.125 μg to 1.5 μg each). Zombie NIR™ Fixable Viability Kit by Biolegend (San Diego, United States) staining was performed following the protocol Zombie NIR™ Fixable Viability Kit by Biolegend, extracellular staining was performed following the protocol BD Horizon Briliant Stain Buffer (BD Bioscience), followed by lysis and intracellular staining using the protocol of True-Nuclear™ Transcription Factor Buffer Set by Biolegend. Measurements were performed on a spectral flow cytometer (Cytek™ Aurora). For extracellular stainings Gr1 Alexa Fluor700, CD8 FITC, CD4 APC Fire, CD11b BV570, PD-L1 BV421, NK1.1 BV605, CD19 Spark Blue (Biolegend), CD25 PerCP-eFluor710 (Thermofisher), CD83 BV750, PD-1 BV650 (BD Bioscience) and for intracellular stainings CTLA-4 PE/Cy7, CD3 PerCP, and Foxp3 Alexa Fluor 647 (Biolegend) were used. Data were analyzed using SpectroFlow™ Version 2.2.0.3. and FlowJo™ Version 10.6.1.
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