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5 protocols using high glucose

1

Isolation and Culture of Rat Hepatocytes

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Rat hepatocytes were isolated from 2‐ to 3‐month old female Lewis rats (Charles River) by collagenase perfusion as described previously.28, 29, 30 Briefly, animals were anesthetized and the portal vein was cannulated. The liver was then perfused with buffers and digested with collagenase. The resultant digest was purified using Percoll centrifugation. Hepatocytes were cultured in DMEM with high glucose (Cellgro), 10% (v/v) fetal bovine serum (Gibco), 0.5 U mL−1 insulin (Lilly), 7 ng mL−1 glucagons (Bedford Laboratories), 7.5 µg mL−1 hydrocortisone (Sigma), and 1% penicillin‐streptomycin (“Hepatocyte media,” Invitrogen). J2‐3T3 fibroblasts, a gift of Dr. Howard Green (Harvard Medical School), were cultured in DMEM with high glucose, 10% bovine serum, and 1% penicillin–streptomycin. Liver endothelial cell line TMNK‐1 (“LEC”), a gift from Dr. Naoya Kobayashi (Okayama University), were cultured in DMEM with high glucose, 10% FBS, and 1% penicillin‐streptomycin. Cells were used between passages 7 and 19.
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2

Aortic SMC Cholesterol Treatment

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Aortic SMCs were explanted from the ascending aortas of PerkSMC−/− and PerkSMC+/+ mice as described earlier.26 SMCs were treated with indicated amounts of free cholesterol complexed to methyl-β-cyclodextrin (MBD-Chol, Millipore Sigma) in DMEM containing high glucose (Cellgro), 10% FBS (Gibco), 1% antibiotic/anti-mycotic (Millipore Sigma), and 0.2% BSA (Fisher Scientific) for 72 hours at 37 °C and 5% CO2.
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3

Isolation and Culture of Rat Hepatocytes

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Rat hepatocytes were isolated from 2 – 3 month old female Lewis rats (Charles River) by collagenase perfusion as described previously28 (link)-30 (link). Briefly, animals were anesthetized and the portal vein was cannulated. The liver was then perfused with buffers and digested with collagenase. The resultant digest was purified using Percoll centrifugation. Hepatocytes were cultured in DMEM with high glucose (Cellgro), 10% (v/v) fetal bovine serum (Gibco), 0.5 U/ml insulin (Lilly), 7 ng/ml glucagons (Bedford Laboratories), 7.5 μg/ml hydrocortisone (Sigma), and 1% penicillin-streptomycin (‘Hepatocyte media’, Invitrogen). J2-3T3 fibroblasts, a gift of Dr. Howard Green (Harvard Medical School), were cultured in DMEM with high glucose, 10% bovine serum, and 1% penicillin-streptomycin. Liver endothelial cell line TMNK-1 (‘LEC’), a gift from Dr. Naoya Kobayashi (Okayama University), were cultured in DMEM with high glucose, 10% FBS, and 1% penicillin-streptomycin. Cells were used between passages 7 and 19.
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4

Cytotoxicity of PDA-F on HCT116 Cells

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In vitro cytotoxicity of PDA-F was performed on HCT116 cell lines using the MTS assay. HCT116 colorectal carcinoma cells were plated at 2.5×103 cells/well in DMEM (Eagle’s minimal essential medium) high glucose (Corning) + 10% FBS (fetal bovine serum). Cell were grown for 24 h and then treated with aqueous suspensions of PDA-F (c = 0 to 500 μg/mL). After incubation for 24 h, cells were washed twice with PBS (phosphate-buffered saline) and additional medium (100 μL) was added to each well, followed by CellTiter Aqueous One Solution (Promega, 20 μL). After 3 h at 37 °C, the number of viable cells was determined by comparison of absorbance readings at λ = 490 nm (test wavelength) and λ = 690 nm (reference wavelength).
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5

Culturing Colon Cancer and Normal Colon Cell Lines

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Colon cancer cell lines (SW480 and SW62) were obtained due to the courtesy of Prof. Caroline Dive, Paterson Institute for Cancer Research, University of Manchester. Human colon carcinoma cell line HCT116 and fetal colon cell line FHC (CRL-1831) were obtained from the American Type Culture Collection (ATCC, Manassas, VA, USA) and maintained according to the ATCC’s instructions. HCT116 cells were cultured in McCoy’s 5A medium (Gibco, Paisley, UK). SW480 and SW620 cells were cultured in DMEM (Dulbecco’s modified eagle medium) with high glucose (Corning, NY, USA). FHC cells were cultured in DMEM/F12 medium (Gibco) supplemented with 25 mM HEPES (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid), 10 ng/mL cholera toxin, 0.005 mg/mL insulin, 0.005 mg/mL transferrin, and 100 ng/mL hydrocortisone. All media were supplemented with 10% fetal bovine serum (FBS, Gibco) and ciprofloxacin (10 µg/mL). The cells were cultured by biweekly passages in a 37 °C humidified atmosphere with 5% CO2 and regularly tested for Mycoplasma sp. contamination.
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