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5 protocols using human ifn γ

1

Quantification of Secreted Proteins and Antibody Binding

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To determine the concentration of secreted proteins after stimulation, human IFN-γ (#430101; BioLegend) and human IL-2 (#431801; BioLegend) detection kits were used. To quantify anti-CD45 and anti-SLAMF6 antibody binding, polystyrene high binding microplates (Corning) were coated with immobilized CD45 (#14197-H08H; SinoBiological) or SLAMF6 (#11945-H08H; SinoBiological) recombinant ectodomain proteins, respectively. To quantify anti-CD3 and/or anti-SLAMF6 antibody binding to CD3, immobilized SLAMF6 KO Jurkat T cell lysates were used as antigen bait. Primary antibody binding was detected using a secondary HRP goat antibody recognizing human Fc (#SSA001-200; Sino-Biologic).
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2

Cytokine Quantification in Cell Cultures

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Cell culture supernatants were analyzed by ELISA for mouse IFN-γ (BD Bioscience), IL-9 (BioLegend), IL-17 (BioLegend) or IFN-β (PBL Assay Science) or for human IFN-γ (BioLegend) or human IL-9 (BioLegend) according to the manufacturer’s instructions.
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3

Mature moDC Cytokine and Surface Marker Analysis

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Mature moDC cell culture supernatants were tested for the levels of IL-12 (mouse IL-12 ELISA cat# 433607 and human IL-12 cat# 431704) and IFNγ (mouse IFNγ ELISA cat# 430804 and human IFNγ cat# 430104) using enzyme-linked immunosorbent assay (ELISA) kits (BioLegend). Mature DCs were stained immediately for flow cytometry. moDC differentiation and maturation was determined via labeling with fluorescence-conjugated antibodies specific for MHC class I (cat# 311403) and class II (cat# 361706), CD80 (cat# 305219), CD252 (cat# 326307), CD40 (cat# 334309), CD86 (cat# 305421), CD83 (cat# 305305), CCR7 (cat# 353203), CCR5 (cat# 313707), CCR6 (cat# 353415), CCR3 (cat# 310707) and CD205 (cat# 342203) (BioLegend). The expression of these cell surface markers was determined by flow cytometry and analyzed using FlowJo software (TreeStar).
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4

Multiparameter Analysis of Immune Cells

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Anti-human PD-L1/CD274, -PE and –APC (Clone# 29E.2A3, catalog#329745, 329706, 329708), anti-FLAG antibody (Clone# L5, catalog#637304), Alexa Fluor 555 goat anti-rat IgG antibody (Catalog#405420), Alexa Fluor 467 goat anti-rat IgG antibody(Catalog#405416), human IFNγ (Catalog#570208), human IFNα (Catalog#592704), human IL-2 (Catalog#589104), and Zombie UV dye (Catalog#77474) were purchased from Biolegend (San Diego, CA, USA). Human IFNβ (Catalog#8499-1F) was purchased from R&D Systems (Minneapolis, MN 55413). Heat Inactivated human AB serum was purchased from Innovative Research, Inc (Catalog# IPLA-SERAB-27146, MI 48377, USA). Dynabeads™ Human T-Activator CD3/CD28 for T Cell Expansion and Activation was purchased from ThermoFisher Scientific (Catalog# 11131D, Waltham, MA, USA). The CF33-hNIS-Δ (CF33-hNIS-ΔF14.5L) virus [24 (link), 25 (link)], CF33-GFP [ref.26 (link)], and the CF33-hNIS-antiPDL1 virus [23 (link)] were generated in our lab as previously described. Anti-sodium/Iodide Symporter (hNIS) monoclonal antibody was purchased from EMD Millipore Corp (Catalog# MAB3564, Billerica, MA, USA). Goat anti-rabbit IgG (H+L) Alexa Fluor 555 antibody (Catalog# A21434) and Goat anti-mouse Alexa Fluor 488 antibody (Catalog# A11029) were purchased from Invitrogen Corporation (Carlsbad, CA, USA).
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5

Quantification of Secreted Proteins

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To determine the concentration of secreted proteins after stimulation, human and mouse IL-2 (Biolegend), human IFN-γ (Biolegend), and mouse Granzyme B (Invitrogen) kits were used according to the manufacturer’s protocols. Cells were stimulated as indicated.
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