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5 protocols using fluticasone

1

Inhibiting Mucin Production in Virus-Induced Airway Inflammation

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In experiments evaluating the effect of tiotropium (a gift from Boehringer Ingelheim, Ingelheim Germany) or fluticasone (Sigma-Aldrich, Zwijndrecht, The Netherlands) on HRV-induced mucin production, cells were pre-treated by incubation in HC-free complete medium containing tiotropium (10–1,000 nM) or fluticasone (10–1,000 nM) prior to infection with HRV. After infection, the basal medium was replaced by fresh free-HC medium containing tiotropium or fluticasone.
In experiments aimed to investigate the role of extracellular ATP release in virus-induced mucin production, suramin (a non-selective P2R antagonist, TOCRIS) was added to basal media at 10 μM for 30 min prior to HRV treatment. To investigate the ability of tiotropium and fluticasone to inhibit ATP- induced mucin expression, cells pre-treated with tiotropium/fluticasone were stimulated with 100 μM ATP at the basal side for 24 h.
In experiments with DAPT (γ-secretase inhibitor, TOCRIS), ALI-PBEC were incubated in complete medium supplemented with either 5 μM DAPT or solvent control (0.1% DMSO) during differentiation for 14 days. On day 14, cells were infected with HRV-A16 at MOI 1, and following infection the basal medium was replaced by fresh HC-free medium containing 5 μM DAPT or solvent control and cells were incubated for another 24 h.
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2

Screening Diverse Compounds for Antiviral Efficacy

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Selection of compounds for testing was based on side effect profiles and compound availability. Bacampicillin (B0070000), ciclopirox (SML2011–50MG), ciclosporin (C2163000), clofazimine (1138904–200MG), dicycloverine (D1060000), fludrocortisone (1273003–200MG), fluticasone (1285873–100MG), haloperidol (H1512–5G), isoxicam (I1762–1G), lansoprazole (1356916–150MG), metixene (M1808000), myricetin (M6760–10MG), pentoxifylline (1508901–200MG), sirolimus (S-015–1ML), tretinoin (1674004–5X30MG), and valproic acid (1708707–500MG) were purchased from Sigma-Aldrich. Remdesivir (GS-5734) was purchased from Selleckchem. Compounds were resuspended in DMSO according to manufacturer’s instructions and serially diluted to the relevant concentrations for treatment of infected cells.
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Compound Selection and Preparation

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Selection of compounds for testing was based on side effect profiles and compound availability. Bacampicillin (B0070000), ciclopirox (SML2011-50MG), ciclosporin (C2163000), clofazimine (1138904-200MG), dicycloverine (D1060000), fludrocortisone (1273003-200MG), fluticasone (1285873-100MG), haloperidol (H1512-5G), isoxicam (I1762-1G), lansoprazole (1356916-150MG), metixene (M1808000), myricetin (M6760-10MG), pentoxifylline (1508901-200MG), sirolimus (S-015-1ML), tretinoin (1674004-5X30MG), and valproic acid (1708707-500MG) were purchased from Sigma-Aldrich. Remdesivir (GS-5734) was purchased from Selleckchem.
Compounds were resuspended in DMSO according to manufacturer’s instructions and serially diluted to the relevant concentrations for treatment of infected cells.
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4

Myogenic Culture and Transplantation of MuSCs

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Following FACs isolation, we resuspended MuSCs in myogenic cell culture medium containing DMEM/F10 (50:50), 15% FBS, 2.5 ng ml−1 fibroblast growth factor-2 and 1% penicillin-streptomycin. We added the indicated doses (see respective Figure legends) 50 nM of SAG1.3 (Cayman Chemical Company, catalog # 11914), 1 µM of GSA-10 (Sigma-Aldrich, catalog # SML1171), 25 nM of Fluticasone (Sigma-Aldrich, catalog # F9428), 5 µM of Cyclopamine (STEMCELL Technologies, catalog #72072), 1 µM Purmorphamine (Selleck Chemical, catalog # S3042), 100 nM of Vismodegib (Selleck Chemicals, catalog # S1082) or 0.1 µg/ml SHH (R&D Systems, catalog # 461-SH-025) to MuSCs cultured on collagen coated dishes for the first 24 h. The cells were then trypsinized and cells reseeded onto hydrogels for an additional 6 days of culture. All treatments were compared to their solvent (DMSO) vehicle control.
For IFT88−/− MuSCs transplant studies, we infected MuSCs with lentivirus encoding elongation factor-1α promoter-driven luc-IRES-GFP (GFP/luc virus) for 24 h in culture as described previously6 (link). Cells were assayed for GFP 48 h post-infection using an inverted fluorescence microscope (Carl Zeiss Microimaging).
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5

Bronchial Epithelial Cell Culture Protocol

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Normal human bronchial epithelial cells (NHBE, Lonza) were maintained in Keratinocyte SFM basal medium supplemented with 5 μg/L human recombinant epithelial growth factor (EGF), 50 mg/L bovine pituitary extract (BPE), 5 mg/L insulin, and 25 nM hydrocortisone at 37°C in a 5% CO2 atmosphere. Cells were passaged every 3 days and plated for experimental treatment within 6 passages.
NaAsO2, montelukast, fluticasone, N-acetylcysteine, and BAY117082 were purchased from Sigma–Aldrich (United States). Antibodies against fibronectin (Sigma, F3648), MMP-2 (GeneTex, GTX 104577), GAPDH (GeneTex, GTX100118), SMAD2/3 (GeneTex, GTX111123), β-catenin (R&D, AF1329), N-Cadherin (GeneTex, GTX127345), and E-Cadherin (GeneTex, GTX100443) were used.
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