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19 protocols using h57 597

1

Phosphorylated STAT3 Quantification

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Cells were stained with mouse CD11c (N418, 1/200, eBioscience), F4/80 (BM8, 1/200, Biolegend), or TCR-β (H57-597, 1/200, Biolegend) antibodies at 37°C for 10 min, stimulated with cytokines for 15 min, fixed with 2% paraformaldehyde at 37°C for 10 min, permeabilized in 90% ice-cold methanol for 30 min, washed twice with FACS buffer (PBS with 1% FBS), stained with pSTAT3 (Y705)-PE or pSTAT3 (Y705)-Alexa Fluor 647 antibodies (4/P-STAT3, 1/25, BD Biosciences) at RT for 30 min, and analyzed on a FACSCanto II (Becton Dickinson).
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2

Multiparameter Flow Cytometry Assay

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Antibodies against murine CD4 (RM4-5, AF700, BV650), CD8 (53-6.7, APC/Fire 750, BV785), CCR2 (SA203G11, BV421), CD11c (N418, APCCy7, Pe/Cy5), CD206 (C068C2, APC), CD11b (M1/70, BV421), F4/80 (BM8, BV510, BV711, FITC), TCRβ (H57-597, BV605), and NK1.1 (PK136, BV650) were purchased from BioLegend. Antibodies against CD4 (GK1.5, BUV395) and ST2 (U29-93, BV480) were purchased from BD Biosciences. Antibodies against B220 (RA3-6B2, AF488), CD11c (N418, e450, PE-Cy5.5), CD25 (PC61.5, PE-Cy7), CD4 (GK1.5, APC-eFluor 780, Super Bright 645), CD45 (30-F11, Pacific Orange), Foxp3 (FJK-16s, APC, e450, FITC), GITR (DTA-1, Super Bright 600), IL-10 (JES5-16E3, PE), KLRG1 (2F1, APC, APC-eFluor 780, PE-eFluor 610), NK1.1 (PK136, PE), and ST2 (RMST2-2, PE, PerCP-eFluor710) were purchased from eBioscience, Thermo Fisher Scientific. Viability dyes (e506, near IR, UV) were purchased from Invitrogen, Thermo Fisher Scientific.
Extracellular flow staining was performed in 2% FBS-PBS in the presence of BioLegend’s TruStain FcX for 30 minutes at 4°C. Fixation, permeabilization, and intracellular staining were performed using eBioscience’s (Thermo Fisher Scientific) Foxp3/transcription factor staining buffer set per manufacturer’s directions. Flow data were collected using a Cytek Aurora or BD Biosciences LSR and analyzed using FlowJo.
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3

Comprehensive Immune Cell Profiling

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Cells harvested after overnight incubation were stained following standard protocols. Experiments used antibodies specific for human FcR block (BioLegend #422302), CD11c (Bu15, BioLegend #337214), CD80 (2D10, BioLegend #305220), CD86 (Bu63, BioLegend #374210) HLA-DR (L243, BioLegend #307629), HLA-A,B,C (W6/32, BioLegend #311410), CD14 (M5E2, BioLegend #301828), CD63 (H5C6, BioLegend #353007), CD61 (VI-PL2, BioLegend #336416), CD41/CD61 (PAC-1, BioLegend 362804), CD62p (AK4, BioLegend #304906), mTCRb (H57-597, BioLegend #109206), CD4 (OKT4, BioLegend #317428), CD8 (SK1, BioLegend #344704), and human CD3-APC (Clone OKT3, BioLegend). Color-matched isotype control antibodies were obtained from the same vendors. Flow cytometry was performed with a Stratedigm flow cytometer with electronic gates set on live cells by a combination of forward and side light scatter and 7-AAD (BioLegend), EMA (Invitrogen), Zombie Aqua (BioLegend), or Zombie NIR (BioLegend) exclusion. A minimum of 3 × 104 events were collected per sample, and data were analyzed with FlowJo software (FlowJo LLC).
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4

Naive CD4 T Cell Activation and Differentiation

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Naive CD4 T (CD44lowCD62LhighCD25negative) cells were prepared using a CD4+CD62L+ T-cell isolation kit II (Miltenyi Biotec). Naive CD4 T cells (1.5 × 106) were stimulated with immobilized anti-TCR-β mAb (3 μg ml−1, H57-597, BioLegend) and an anti-CD28 mAb (1 μg ml−1, 37.5, BioLegend) for 2 days under the conditions indicated. Next, cells were transferred to a new plate and cultured further in the presence of cytokines. Cytokine conditions were as follows: IL-2 (TH) conditions: IL-2 (2.5 ng ml−1); neutral conditions: IL-2 (2.5 ng ml−1), anti-IL-4 mAb (5 μg ml−1, 11B11, BioLegend) and anti-IFN-γ mAb (5 μg ml−1, R4-6A2, BioLegend).
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5

Isolation and Activation of Naïve and Total CD8+ T Cells

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CD8+ T cells were prepared from spleen using a MojoSort Mouse CD8+ T cell isolation kit (cat#480035; BioLegend). In naïve CD8+ T (CD44lowCD62Lhigh) cell preparation, biotin anti‐CD44 mAb (cat#103004; BioLegend) was added. In the case of total CD8+ T cells, anti‐CD44 mAb was not added. After isolation, the cells (7.5 × 105) were stimulated with immobilized anti‐TCR‐β mAb (3 μg/mL, H57‐597; BioLegend) and anti‐CD28 mAb (1 μg/mL, 37.5; BioLegend) with IL‐2 (10 ng/mL; cat#575406; BioLegend) for 2 days. The cells were then transferred to a new plate and further cultured with IL‐2 (10 ng/mL) for 5 days.
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6

Phosphorylated STAT3 Expression Assay

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Cells were stained with mouse CD11c (N418, 1/200 and eBioscience), F4/80 (BM8, 1/200, Biolegend), or TCR-β (H57-597, 1/200, Biolegend) antibodies at 37 °C for 10 min, stimulated with cytokines for 15 min, fixed with 2% paraformaldehyde at 37 °C for 10 min, permeabilized in 90% ice-cold methanol for 30 min, washed twice with FACS buffer (PBS with 1% FBS), stained with pSTAT3 (Y705)-PE or pSTAT3 (Y705)-Alexa Fluor 647 antibodies (4/P-STAT3, 1/25 and BD Biosciences) at RT for 30 min, and analysed on a FACSCanto II (Becton Dickinson).
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7

Multiparametric Flow Cytometry Panel

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The following clones of antibody were purchased from Biolegend and used for cell surface staining: CD4 (RM4-5), CD8 (53-6.7), TCRβ (H57-597), B220 (RA3-6B2), CD69 (H1.2F3), CD25 (PC61), Vβ5 (MR9-4), IgM (RMM-1), IgD (11-26c.2a), CD21 (7E9), CD23 (B3B4). Flow cytometry was performed on a FACSCanto or FACSCanto II and analyzed with FlowJo software.
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8

Multiparameter Flow Cytometry Panel

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PD-1 FITC (1:300; J43; eBioscience), NK1.1 PE (1:300; PK136; eBioscience), CD3e PE-Dazzle594 (1:300; 145-2C11; BioLegend), CD3e PE (1:200; 145-2C11; eBioscience), FoxP3 PerCP-Cy5.5 (1:200; FJK-16s; eBioscience), CD8a PE-Cy7 (1:2000; 53-6.7; eBioscience), CD8a APC (1:600; 53-6.7; eBioscience), CD8a PerCP-Cy5.5 (1:400; 53-6.7; eBioscience), TCRb AF700 (1:100; H57-597; BioLegend), CD45 BV785 (1:1000; 30-F11; BioLegend), CD4 BV711 (1:400; GK1.5; BioLegend), CD19 BV650 (1:400; 6D5; BioLegend), CD19 PE (1:500; 1D3; eBioscience), CD11b BV605 (1:1000; M1/70; BioLegend), CD11b BV510 (1:400; M1/70; BioLegend), CD11c BV605 (1:400; N418; BioLegend), Siglec-F PE (1:300; E50-2440; BD Biosciences), F4/80 APC (1:200; BM8; BioLegend), Ly-6G AF 700 (1:300; 1A8; BioLegend), MHC II BV650 (1:4000; M5/114.15.2; BioLegend), CD64 BV421 (1:200; X54-5/7.1; BioLegend), TNF FITC (1:300; MP6-XT22; BioLegend), IFNg PE-Cy7 (1: 1000; XMG1.2; BD Biosciences), Eomes PE (1:200; W17001A; BioLegend), Ki-67 BV 650 (1:200, 11F6; Biolegend), GzmB FITC (1:100; GB11; BioLegend). Gating strategy is depicted in Supplementary Fig. 6d.
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9

Comprehensive Thymocyte and TEC Profiling

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Thymocytes were incubated with Abs against TCR beta (1:400, H57-597; Biolegend), CD4 (1:1000, GK1.5; BioLegend), CD5 (1:400, 53-7.3, eBioscience), CD8 (1:500, 53-67; BioLegend), CD25 (1:1000, PC61.5; BioLegend), CD44 (1:500, IM7; BioLegend), c-kit (1:200, 2B8; BioLegend), CD24 (1:1000, M1/69; BioLegend), CD69 (1:200, H1.2F3; BioLegend), PD-1 (1:200, 29F.1A12, Biolegend), CCR7 (1:200, 4B12, BioLegend). For intracellular staining, cells were fixed, permeabilized (Fixation/Permeabilization kit, eBioscience) and stained for Foxp3 (1:70, FJK-16S, eBioscience) and Helios (1:70, 22F6, eBioscience). TECs were stained using Abs against CD45 (1:400, 30F11; BioLegend), EpCAM (1:1000, G8.8; BioLegend), MHCII (1:1000, M5/114.15.2; BioLegend), Ly51 (1:1000, 6C3; BioLegend), UEA-1 (1:1000, Reactolab), CD80 (1:500, 16-10A1, Biolegend), CD86 (1:500, GL-1, Biolegend), CD83 (1:500, Michel 19, Biolegend). For intracellular staining, cells were fixed, permeabilized (Cytofix/Cytoperm Kit, BD Biosciences) and labelled for the expression of CD83. Stained samples were acquired on a FACSAria II or BD LSRFortessa flow cytometers and the data was analyzed using the FlowJo (Treestar) software.
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10

Naive CD8 T Cell Activation and Glutamine Deprivation

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Naive CD8 T (CD44lowCD62Lhigh) cells were prepared using a Naive CD8+ T-cell Isolation kit (cat#130-096-543; Miltenyi Biotec, San Diego, CA, USA). Naive CD8 T cells (1.5 × 106) were stimulated with immobilized anti-TCR-β mAb (3 μg/ml, H57-597; BioLegend) and anti-CD28 mAb (1 μg/ml, 37.5; BioLegend) for 2 days in the presence of IL-2 (10 ng/ml, Pepro Tech). The cells were then transferred to a new plate and further cultured in the presence of IL-2 (10 ng/ml). The cells were cultured in RPMI 1640 with l-glutamine (cat#189-02025; Wako Chemicals) supplemented with 10% fetal bovine serum, 2 mM l-glutamine (16948-04; Nacalai Tesque, Kyoto, Japan), 1 mM sodium pyruvate (cat#06977-34; Nacalai Tesque), 1% MEM nonessential amino acids (cat#06344-56; Nacalai Tesque), 10 mM HEPES (cat#15630-080; Thermo Fisher Scientific, Waktham, MA, USA), 55 μM 2-Mercaptoethanol (cat#21985-023; Thermo Fisher Scientific), and 1% penicillin-streptomycin (cat#26253-84; Nacalai Tesque). For glutamine-deprived conditions, the cells were cultured in RPMI 1640 without l-glutamine (cat#183-02165; Wako Chemicals) supplemented with 10% fetal bovine serum, 1 mM sodium pyruvate, 1% MEM nonessential amino acids, 10 mM HEPES, 55 μM 2-Mercaptoethanol, and 1% penicillin-streptomycin.
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