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5 protocols using upadacitinib

1

Human MDMs Cytokine Response to Stimuli

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Human MDMs were treated with lipid A (Peptides International, Louisville, KY), Pam3Cys (EMD Millipore, Billerica, MA), polyinosinic-polycytidylic acid [poly(I:C)], CpG DNA (Invivogen, San Diego, CA), IL-12, IFN-γ (R&D Systems, Minneapolis, MN), IFN-α (Biovision, Milpitas, CA), or cocultured with Salmonella enterica serovar Typhimurium at multiplicity of infection (MOI) 10:1. Supernatants were assayed for IL-6, IL-10, TNF, IL-1β, IFN-γ (BD Biosciences), IL-12 (eBioscience, San Diego, CA), or IFN-γ (BioLegend) by ELISA. In some cases, cells were pretreated with 5 μg/ml fludarabine (STAT1 inhibitor), 150 μM lisofylline (STAT4 inhibitor) (Cayman Chemical Company), Upadacitinib (JAK1 inhibitor), or BMS-986165 (TYK2 inhibitor) (MedChemExpress).
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2

Inhibition of IFN-γ production by NK-92 cells

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Human NK-92 cells were analyzed for their ability to produce IFN-γ upon incubation with different small-molecule inhibitors. Baricitinib (HY-15315), Tofacitinib (HY-40354), Upadacitinib (HY-19569), and Ritlecitinib (HY-100754) were purchased from MedChemExpress LLC. Ruxolitinib (S1378) and Dexamethasone (S1322) were purchased from Selleckchem. NK-92 cells were initially starved for 4 h in plain RPMI medium. Cells were then resuspended at a density of 1 × 106 cells/mL in complete RPMI, and 100 μL of the cell suspension was incubated with increasing concentrations of the inhibitors (up to 3 µM) in the presence of L19-IL12 (10 ng/mL). After 24 h, cell-free supernatants were collected, and the concentration of IFN-γ was measured using the ELISA MAXTM Set Human IFN-γ kit (BioLegend).
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Cytokine-Induced T Cell Activation

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Recombinant human IL-6 and IFN gamma (both carrier-free, Biolegend, London) and anti-CD3 and anti-CD28 (both Thermo Fisher Scientific, Germany) were used for in vitro stimulation. JAK inhibitors baricitinib, upadacitinib, and fedratinib were purchased from MedChemExpress (NJ).
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4

JAK Inhibitor Effects on B Cells

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Peripheral blood mononuclear cells (PBMCs) were isolated from buffy coats or EDTA blood by density gradient centrifugation. Total or CD27+ B cells were isolated magnetically using EasySep isolation kits (Human B-cell Isolation Kit/CD27+ B-cell Isolation Kit (Stemcell Technologies)) following the manufacturers’ instructions. B cells were plated in 96-well plates with 30.000 cells/well in Iscove’s Modified Dulbecco’s Medium (Life Technologies) supplemented with 10% FCS, insulin, apo-transferrin, non-essential amino acids, glutamine and glutathione as described previously (20 (link)) and stimulated with CpG (ODN2009, Apara Biosciences) at a concentration of 0.5µM. Baricitinib (Toronto Research Chemicals), tofacitinib (provided by Pfizer Inc, Peaback, USA), ruxolitinib (Novartis), upadacitinib (ABT-494, MedChemExpress), filgotinib (GLPG0634, selleckchem) were stored as 10nM stocks in dimethylsulfoxide and further diluted in medium as needed. JAK inhibitors were added to indicated samples at doses of 10-3000nM.
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5

Small Molecule Screening Protocol

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All reagents and solvents were purchased from Thermo Fischer or Sigma-Aldrich and used as received. Small molecules (LCL-161 (1), R848 (2), Ruxolitinib (3), Upadacitinib (4), BP-1-102 (5), STX-0119 (6)) were purchased from MedChem Express, dissolved in DMSO accordingly and used without any further purification. MilliQ water was obtained from the Waters filtration system.
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