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2 protocols using mpdca 1 bst2

1

Flow Cytometric Phenotyping and Cytokine Analysis

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Cells were stained with fluorescein-conjugated mAbs to mouse CD3α (145-2C11), CD4 (RM4–5), CD8α (53–6.7), CD11c (HL3), CD40 (3/23), CD44 (IM7), CD45.1 (A20), CD62L (MEL-14), CD80 (16-10A1), CD86 (GL1), CD154 (MR1), I-A/I-E (M5/114.15.2), B220 (RA3-6B2), Vα2 TCR (B20.1), γδTCR (GL3), IFN-γ (XMG1.2), IL-17A (TC11-18H10), isotype-matched control mAb (BD Biosciences), CD209b (22D1), CD253/TRAIL (N2B2) (eBioscience), CD11b (M1/70), CD178/FasL (MFL3), F4/80 (BM8), Ly6C (HK1.4), Ly6G (1A8), γδTCR (GL3) (Biolegend), mPDCA-1/BST2 (JF05-1C2.4.1) (Miltenyi Biotec), H-2Kb OVA tetramer (MBL) and Siglec-H (440c; Hycult Biotechnology). For the intracellular expression of cytokines, cells were incubated for 4 hrs with phorbol 12-myristate 13-acetate (PMA, 50 ng/ml; Sigma-Aldrich) plus ionomycin (500 ng/ml; Sigma-Aldrich) or OVA257–264 peptide (SIINFEKL; 10 μM) plus GolgiPlug (BD Biosciences) during the final 2 hrs. Subsequently, the cells were resuspended in Fixation-Permeabilization solution (BD Cytofix/Cytoperm kit; BD Biosciences) and intracellular cytokine staining was carried out according to the manufacturer’s directions. Fluorescence staining was analyzed with a FACSCalibur flow cytometer and CELLQuest software (both from BD Biosciences).
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2

Identification and Sorting of DC Subsets

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Cells were stained with the following fluorochrome- or biotin-conjugated antibodies obtained from eBioscience (or another manufacturer, as indicated): anti-CD11c (N418), MHC II (M5/114.15.2), CD11b (M1/70), CD8α (53–6.7), Gr-1 (RB6-8C5), TCRβ (H57-597), CD3 (17A2), B220 (RA3-6B2), NK1.1 (PK136), Ter119 (TER-119), CD49b (DX5), CD4 (RM4-5 and GK1.5), FoxP3 (FJK-16s), CD24 (M1/69), Flt3 (A2F10), c-Kit (2B8), Sca-1 (D7), CD115 (AFS98), IL7-Rα (A7R34), CD45.1 (A20), CD45.2 (104), PD-L1 (MIH5), CD86 (GL1), DEC205 (NLDC-145; BioLegend), mPDCA-1/Bst2 (Miltenyi Biotec), Sirpα (P84, BD), CD80 (16-10A1), CD40 (1C10), and MHC I (AF6-88.5.5.3). Intracellular staining of FoxP3 was performed per the manufacturer’s instructions (eBioscience). Cell acquisition was done on LSR II or LSR Fortessa (BD) and analysis was done using FlowJo (Tree Star).
For sorting, spleens were harvested from Flt3+/+ or Flt3ITD/+ FVB-B6 F1 mice and sorted on either FACSAria (BD) or MoFlo (Beckman Coulter) instruments. DC populations were sorted as follows: pDC (Bst2+ B220+), cDCs (CD11chi MHCII+ B220) and subsets thereof; canonical CD8+ (CD8+ SSChi DEC205+ or CD86+); noncanonical CD8+ (CD8+ SSClo DEC205 or CD86); Esamhi (CD11b+ Esamhi); and Esamlo (CD11b+ Esamlo).
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