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4 protocols using anti cd49b dx5

1

Multiparametric Flow Cytometry for Immune Cell Analysis

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Flow cytometry was performed as described previously (11 (link), 14 (link)). In details, single cells were isolated from mouse BM, spleen, and periphery lymph nodes (pLN). If necessary, BM cells were counted by Fuchs-Rosenthal Counting Chamber. Briefly, to analyze the surface marker, cells were blocked with anti-CD16/CD32 antibodies (eBioscience, San Diego, CA) and then stained with surface marker antibodies and washed by PBS. To analyze the intracellular proteins, after staining with surface markers, cells were fixed and permeabilized with Foxp3/Transcription Factor Staining Buffer Kit following the manufacturer's protocols (eBioscience, San Diego, CA).
Antibodies used were as followings: anti-Foxo1 (C29H4) was from Cell Signaling Technology (Boston, MA); anti-NKp46 (29A1.4), anti-CD19 (6D5), anti-CD3 (17A2), anti-Gr1 (RB6-8C5), anti-Ter119 (Ter119), anti-CD4 (GK1.5), anti-CD8 (53-6.7), anti-c-Kit (2B8), anti-Sca-1 (D7), anti-CD127 (A7R34), and anti-CD49b (DX5) were from Biolegend (San Diego, CA); anti-CD27 (LG.3A10), anti-CD11b (M1/70), anti-B220 (RA3-6B2), and anti-CD122 (TM-β1) were form BD Biosciences (San Diego, CA); anti-CD43 (S7), anti-KLRG1 (2F1), anti-CD135(A2F10), anti-Ki-67 (SolA15), and anti-T-bet (4B10) were from eBioscience (San Diego, CA).
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2

Isolation and Activation of Murine ILC2s

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Ten- to 12-week-old B10.BR and BALB/c mice were given 0.4 µg of recombinant mouse IL-17E/IL-25 (R&D Systems, Minneapolis, MN) for 4 days. On day 5, cells were isolated from mesenteric lymph nodes and peritoneum by peritoneal lavage using RPMI with 10% fetal bovine serum (complete media). ILC2s were isolated by negative selection with a MACs column using biotinylated antibodies [anti-CD8α (53-6.7), anti-CD4 (RM 4.4), anti-CD3ε (145-2C11), anti-γδTCR (UC7-13DS), anti-TER119 (TER-119), anti-B220 (RA3-6B2), anti-CD11b (M1/70), and anti-NK1.1 (PK136) (all; eBioscience, San Diego, CA); anti-CD11c (N418), anti-CD19 (MB19-1), anti-Ly6G (1A8), and anti-CD49b (DX5) (all; BioLegend, San Diego, CA); and Streptavidin Microbeads (130-048-101; Miltenyi Biotec, Cambridge, MA)]. Cells were cultured for 6 days in complete media with recombinant IL-7 and recombinant IL-33 (10 ng/mL) (PeproTech, Rocky Hill, NJ), changing the media every 2 days. ILC2 activation was evaluated by using flow cytometry on day 6 by intracellular cytokine staining of lineage-specific markers, ST2, KLRG1, and expression of IL-13. For steroid response assays, dexamethasone (10 nM) (D4902; MilliporeSigma, Burlington, MA) was added to ILC2 cultures on day 4 and evaluated 48 hours later.
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3

Flow Cytometry Analysis of B Cells

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Flow cytometry was performed with an LSRII or Fortessa (BD) and analyzed with Flowjo (Tree Star, Ashland, OR). All antibodies were purchased from Ebioscience, unless specified. For I-Ed-specific B cell staining, cells were preblocked at 4°C with 2.4G2, followed by incubation for 30 mins with lineage-specific antibodies (for dump channel: Anti-CD3 (17A2), anti-CD4 (GK1.5), anti-CD8α (53-6.7), anti-F4/80 (BM8, Biolegend), and anti-CD49b (DX5, Biolegend)), anti-B220 (RA3-6B.2), anti-IgD (11-26C.2a), anti-Fas (JO2, BD Pharmingen), and anti-GL7 (GL7), and followed by I-Ed tetramers.
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4

Comprehensive Immune Cell Profiling of BAL and Lung

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To analyze immune cell populations, BAL and lung cells were incubated with rat anti-mouse CD16/CD32 (BD Biosciences) blocking antibody for 10 min at RT. Then, the BAL cells were stained with anti-Gr-1 (RB6-8C5, BioLegend, San Diego, CA, United States), anti-Siglec-F (E50-2440, BD Biosciences), Ly6c (AL-21, BD Biosciences), anti-MHCII (M5/114.15.2, eBioscience, San Diego, CA, United States), anti-CD11b (M1-70, BioLegend), anti-CD14 (Sa14-2, BioLegend), anti-CD11c (N418, eBioscience), anti-CD49b (DX5, BioLegend), anti-PDCA-1 (eBio927, eBioscience), DAPI (BioLegend), and anti-CD45 (30-F11, BioLegend) antibodies for 30 min at 4°C in dark. The lung cells were also stained with anti-CD3 (17A2, BioLegend), anti-CD4 (RM4-5, BioLegend), anti-CD8 (53-6.7, BioLegend), and anti-CD45 (30-F11, BioLegend) antibodies for 30 min at 4°C in a dark place. The stained cells were fixed in FACS lysing solution (BD biosciences) and analyzed by BD LSR Fortessa (BD Biosciences). All flow cytometry data were analyzed by Flowjo software (TreeStar Inc., Ashland, OR, United States). The gating strategy for immune cell populations is described in Supplementary Figures S1, S2.
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