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6 protocols using recombinant murine il 13

1

Quantifying IL-5 and IL-13 Secretion

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The secretion of IL-5 and IL-13 was assessed by enzyme-linked immunosorbent assays (ELISA) according to the manufacturer protocol using as standards recombinant murine IL-5 (PeproTech #215-15) and recombinant murine IL-13 (PeproTech #210-13).
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2

Airway Basal Stem Cell Differentiation

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Cells were cultured and expanded in complete SAGM (small airway epithelial cell growth medium; Lonza, CC-3118) containing TGF-β/BMP4/WNT antagonist cocktails and 5 μM Rock inhibitor Y-27632 (Selleckbio, S1049). To initiate air–liquid interface (ALI) cultures, airway basal stem cells were dissociated from mouse tracheas and seeded onto transwell membranes. After reaching confluence, media was removed from the upper chamber. Mucocilliary differentiation was performed with PneumaCult-ALI Medium (StemCell, 05001). Differentiation of airway basal stem cells on an air–liquid interface was followed by directly visualizing beating cilia in real time after 10–14 days.
Once air-liquid cultures were fully differentiated, as indicated by beating cilia, treatment cultures were supplemented with 25ng/mL of recombinant murine IL-13 (Peprotech-stock diluted in water and used fresh) diluted in PneumaCult-ALI Medium, while control cultures received an equal volume of water for 72 hours. After treatment, whole ALI wells were fixed in 4% PFA, immunostained in whole mount using the same buffers and imaged with a confocal microscope as described above.
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3

Macrophage Polarization Dynamics

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Metformin, LPS, AICAR, and phorbol 12-myristate 13-acetate (PMA) were obtained from Sigma (St. Louis, MO). Recombinant murine IL-13 was purchased from PeproTech (Rocky Hill, NJ). Mouse recombinant M-CSF and antibodies against AMPKα1 and p-AMPKα1 were from Cell Signaling Technology (Beverly, MA, USA). Antibody against Actin was purchased from Santa Cruz Biotechnology (CA, USA). Antibodies for flow cytometry including PE-conjugated anti-mouse CD206, PE-conjugated anti-mouse CD86 and FITC-conjugated anti-mouse F4/80 were purchased from Biolegend (San Diego, CA, USA). For immunofluorescence, first antibodies including anti-mouse F4/80, anti-CD31, anti-αSMA, and FITC-conjugated anti-mouse CD206 were from eBioscience, Abcam, Sigma and Biolegend respectively, while secondary antibodies including anti-Rat and anti-mouse were from life technology. FITC Annexin V Apoptosis Detection Kit I and matrigel were purchased from BD (San Jose, CA, USA). JetPrime transfection agent was obtained from Polyplus. Clodronate liposomes and PBS liposomes were purchased from ClodronateLiposomes.com (Amsterdam, Netherlands).
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4

Murine IL-13 in Cryoinjury Model

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Recombinant murine IL‐13 (Peprotech, 210‐13) was administered intraperitoneally, 3 (200 ng), 4 (200 ng), 5 (400 ng), and 6 (400 ng) days after cryoinjury and mice were sacrificed 7 days after injury.
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5

Airway Basal Stem Cell Differentiation

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Cells were cultured and expanded in complete SAGM (small airway epithelial cell growth medium; Lonza, CC-3118) containing TGF-β/BMP4/WNT antagonist cocktails and 5 μM Rock inhibitor Y-27632 (Selleckbio, S1049). To initiate air–liquid interface (ALI) cultures, airway basal stem cells were dissociated from mouse tracheas and seeded onto transwell membranes. After reaching confluence, media was removed from the upper chamber. Mucocilliary differentiation was performed with PneumaCult-ALI Medium (StemCell, 05001). Differentiation of airway basal stem cells on an air–liquid interface was followed by directly visualizing beating cilia in real time after 10–14 days.
Once air-liquid cultures were fully differentiated, as indicated by beating cilia, treatment cultures were supplemented with 25ng/mL of recombinant murine IL-13 (Peprotech-stock diluted in water and used fresh) diluted in PneumaCult-ALI Medium, while control cultures received an equal volume of water for 72 hours. After treatment, whole ALI wells were fixed in 4% PFA, immunostained in whole mount using the same buffers and imaged with a confocal microscope as described above.
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6

Murine Macrophage Polarization Protocol

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Mouse peritoneal macrophages from no Cre mice (Lyz2 Cre-/-RhoA flox/flox ), further called the wild type or RhoA deleted Lyz2 Cre+/-RhoA flox/flox mice, forther called the KO were purified by overnight incubation in Dulbecco's Modified Eagle Medium (DMEM) with 10% fetal bovine serum (FBS), 100U/ml penicillin and100 mg/ml streptomycin (all from Thermo Fisher Scientific, Waltham, MA, USA) and subsequent removal of free-floating cells. For M1 polarization, macrophages were incubated for 24 hr either with 20ng/ml of recombinant murine IFN-γ (Peprotech, Rocky Hill, NJ, USA) and100ng/ml of Lipopolysaccharide (LPS) (Sigma Aldrich,St. Louis, MO, USA) or for M2 polarization, with 20ng/ml of recombinant murine IL-4 (Peprotech) and 10ng/ml of recombinant murine IL-13 (Peprotech) as described previously (Liu et al, 2016a.b) . Macrophages were grown either in 6/12 well plastic petri dishes or in glass chamber slides.
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