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3 protocols using rat egf

1

Conjunctival Tissue Culture Protocol

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To define the impact of extracellular matrix hydrogels on gel-forming mucin secretion, we used a previously published method to obtain a co-cultivation of stratified squamous cells, goblet cells, and undifferentiated/stem cells [56 (link)]; starting with mincing the isolated conjunctival tissue to maintaining the cultures as described in 4.2.2. The medium was composed of Dulbecco’s Modified Eagle Medium (DMEM)/F12 (Sigma-Aldrich, St. Louis, MO, USA) supplemented with 100 µg/mL penicillin/streptomycin (Lonza, Basel, Switzerland), 1 µg/mL insulin (Sigma-Aldrich, St. Louis, MO, USA), 0.5 µg/mL hydrocortisone (Sigma-Aldrich, St. Louis, MO, USA), 2 ng/mL rat EGF (PeproTech, Cranbury, NJ, USA), and 10% human serum (Thermo Fisher Scientific, Waltham, MA, USA). The explant conjunctival cultures were photographed using an EVOS microscope (Thermo Fisher Scientific, Waltham, MA, USA).
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2

Halofuginone Cytotoxicity and Apoptosis Assay

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Halofuginone hydrobromide, 2′, 7′-dichlorodihydrofluorescin diacetate (DCFH-DA), Collagenase A, Dnase I, HPLC-grade acetonitrile, HPLC-grade methanol, HPLC-grade isopropanol, Methyl tertbutyl ether (MTBE), Ammonium acetate, N-Acetyl-L-cysteine, acetic acid, Dulbecco's Modified Eagle's Medium without glucose, L-glutamine, phenol red, sodium pyruvate and sodium bicarbonate (DMEM, D5030) and Pierce (R) BCA Protein Assay Kit and [NADP+]/[NADPH] Quantification Kit were obtained from Sigma-Aldrich (Munich, Germany). Rat EGF was purchased from Pepro Tech (Rocky Hill, USA). [U-13C6]-glucose was purchased from Cambridge Isotope Laboratories (Tewksbury, USA). FITC Annexin V Apoptosis Detection Kit I was obtained from BD Bioscience (USA). Dialyzed Fetal Bovine Serum (US Origin SH30079.03) was purchased from HyClone (USA). In situ BrdU-red DNA fragmentation (TUNEL) assay kit (ab66110) was obtained from Abcam.
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3

Resolvin Lipid Mediator Synthesis

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Synthetic RvD1 and RvE1 were purchased from Cayman Chemical, Ann Arbor, MI. Both compounds were dissolved in ethanol as supplied by the manufacturer and were stored at 80°C with minimal exposure to light. AG1478 was purchased from Tocris (Minneapolis, MN), TAPI 2 was purchased from EMD Biosciences (San Diego, CA). Rat EGF were purchased from Peprotech (Rocky Hill, NJ). Fura2/AM was purchased from Invitrogen (Carlsbad,CA). RPMI 1640 media was from Lonza (Walkersville, MD). siRNA and transfection reagents were purchased from Dharmacon (Lafayette, CO). Antibodies against phosphorylated (active) and total AKT were from Cell Signaling Technologies (Danvers, MA) while antibodies against phosphorylated (active) and total ERK 1/2 were from Santa Cruz Biotechnologies (Santa Cruz, CA). Carbachol was from Sigma-Aldrich (St. Louis, MO).
Immediately prior to use, the Rvs were diluted in Krebs-Ringer bicarbonate buffer with HEPES (KRB-HEPES, 119 mM NaCl, 4.8 mM KCl, 1.0 mM CaCl2, 1.2 mM MgSO4, 1.2 mM KH2PO4, 25 mM NaHCO3, 10 mM HEPES, and 5.5 mM glucose [pH 7.45]) to the desired concentrations and added to the cells. The cells were incubated at 37 °C in the dark. Daily working stock dilutions were discarded following each experiment.
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