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9 protocols using troglitazone

1

Hepatocyte Organoid Toxicity Assay

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PHH-derived organoids were seeded on a 10 mg/mL HYDROX-coated 96-well plate. After 14 days of the HYDROX culture, Org-HYDROX were cultured with organoid expansion medium containing different concentrations of acetaminophen (Wako), troglitazone (Wako) and amiodaron (FUJIFILM Wako Pure Chemical) for 7 days. As a control group, PHHs (lot OHO; Celsis) cultured with hepatocyte culture medium (HCM; Lonza) for 48 h after plating on a 96-well plate were exposed to different concentrations of acetaminophen (Wako), troglitazone (Wako) and amiodaron (FUJIFILM Wako Pure Chemical) for 7 days. Cell viability was evaluated using a Cell Counting Kit-8 (Dojindo Laboratories) based on a WST-8 assay according to the manufacturer's instructions. The absorbance at 450 nm was determined by a multiplate reader (Bio-Rad). Cell viability was calculated as a percentage of the control (DMSO-treated group) viability, which was taken as 100%.
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2

Comprehensive Pharmacological Compound Database

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Amoxicillin, atropine, carbamazepine, dicloxacillin, digoxin, erythromycin, estradiol, furosemide, halothane, streptomycin, ticlopidine and lipopolysaccharide (LPS) were purchased from Sigma-Aldrich (St. Louis, MO, USA). Allopurinol, azathioprine, diclofenac, diphenhydramine, flutamide, ibuprofen, imipramine, indomethacin, isoniazid, kanamycin, ketoconazole, metronidazole, nifedipine, phenobarbital, phenytoin, pioglitazone, sulfamethoxazole, troglitazone and valproic acid were purchased from Wako Pure Chemical (Osaka, Japan). Primidone was purchased from the Tokyo Chemical Industry (Tokyo, Japan). Primers were commercially synthesized at Life Technologies (Carlsbad, CA, USA). HaCaT cells were purchased from CLS Cell Lines Service (Eppelheim, Germany). CnT-Prime (CnT-PR) Epithelial Culture Medium and CnT-Prime 2D Diff (CnT-PR-D) Epithelial Culture Medium were from CELLnTEC Advanced Systems (Bern, Switzerland). All other chemicals and solvents were of analytical grade or the highest grade commercially available.
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3

Luciferase Assay for PPARγ Activation

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We performed a luciferase reporter assay according to our previous report [15 (link)]. Briefly, monkey CV-1 kidney cells (American Type Culture Collection, USA) reached 90% confluence on a 100-mm culture plate were transfected with a reporter vector (p4 × UASg-tk-Luc), an expression vector for a chimera protein for GAL4 DNA-binding domain and human PPARγ ligand-binding domain (pM-hPPARγ), and an internal control vector (pRL-CMV) for 4 h. These vectors were kindly provided by Prof. Teruo Kawada and Dr. Tsuyoshi Goto, Kyoto University. After transfection, cells were seeded at 5.00 × 103 cells/well on 96 well plates and treated with medium containing 5 µM troglitazone (FUJIFILM Wako) dissolved in DMSO and either each concentration (0, 10, 20, 25, 30, 40 µg/mL) of YMO dissolved in ethanol or 5 µM GW9662 (FUJIFILM Wako) dissolved in ethanol for 24 h. Luciferase reporter assay was performed using Dual-Glo luciferase assay system (Promega, Madison, WI, USA).
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4

Adipogenic Differentiation Protocol

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Dulbecco’s modified Eagle’s medium (DMEM), insulin, dexamethasone, troglitazone, protease inhibitor cocktail III, and diamidinophenylindole (DAPI) were purchased from Wako, Osaka, Japan. Bovine serum (BS) and Alexa fluor 488-acetylated LDL were purchased from Life Technologies, Carlsbad, CA. DiI–VLDL was purchased from Kalen Biomedical, Germantown, MD. Blasticidin and fetal bovine serum (FBS) were purchased from Biowest, Nuaille, France. Isobutylmethylxanthine (IBMX), CO-releasing molecule 3 (CO-RM3), FLAG peptide, anti-FLAG antibody-conjugated agarose and [13C6]-glucose were purchased from Sigma-Aldrich, St. Louis. 2-deoxyglucose (2-DG) was purchased from the Tokyo chemical industry, Tokyo, Japan.
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5

PPAR Agonist and Antagonist Evaluation

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YMO was provided from Kewpie Corporation (Tokyo, Japan). A synthetic PPARγ agonist, troglitazone, and a synthetic PPARγ antagonist, GW9662, were purchased from FUJIFILM Wako Pure Chemical Corporation (Osaka, Japan). Ethanol and dimethyl sulfoxide (DMSO) were also obtained from FUJIFILM Wako Pure Chemical Corporation.
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6

Srebp-1c-Deficient Mouse Embryonic Fibroblasts

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Male and female Srebp‐1c+/− mice were crossed, and MEFs were prepared from pregnant females. Each 13‐ to 15‐day‐old embryo was dissected from the uterus and washed with PBS. After removal of the head, tail, limbs, and blood‐enriched organs, the remaining tissue was washed with PBS, minced, and trypsinized at 37 °C for 10 min. After inactivation of trypsin by adding fetal bovine serum (FBS; Sigma‐Aldrich, St. Louis, MO, USA), MEFs were separated by filtration through a cell strainer. Cells were cultured and passaged in MEM High Glucose (Wako) with 10% FBS, 1% penicillin and streptomycin (Sigma), and 0.1 μM 2‐mercaptoethanol (Sigma). To induce adipocyte differentiation, MEFs were cultured until confluence. At confluence, maintenance medium was changed to MEF differentiation medium, containing 500 μM 3‐isobutyl‐1‐methylxanthine (Sigma), 1 μM dexamethasone (Sigma), 10 μg mL−1 insulin (Sigma), and 100 μM troglitazone (Wako). The differentiation medium was changed every other day and used for quantitative real‐time RT–PCR, Western blotting, and ChIP assay. KO‐MEFs were also infected with retrovirus expressing Srebp‐1c.
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7

DILI Compound Exposure and LCA Pre-treatment

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DILI drug compounds were dissolved in DMSO to a final concentration of 1% in cell culture medium. Each drug was exposed in three doses for 24 or 72 h with or without LCA 1-h pre-treatment. The following DILI drugs used in this study were categorized into two types: CM-DILI drugs—cyclosporin A (Wako), carbamazepine (Tokyo Chemical Industry), ketoconazole (Sigma-Aldrich), troglitazone (Wako), bosentan (Toronto Research Chemicals), flutamide (LKT Laboratories), diclofenac (Wako), amoxicillin–clavulanate (amoxicillin, Wako; clavulanate, Matrix Scientific) and methapyrilene (Toronto Research Chemicals); and HC-DILI drugs—tacrine (Cayman), tolcapone (Tocris Bioscience) and acetaminophen (Toronto Research Chemicals).
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8

Human Microsomes Compound Metabolism Assay

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Pooled human microsomes (n = 50, mixed gender) were purchased from Sekisui XenoTech, LLC (Kansas City, KS, USA). NADPH-generating system was purchased from BD Bioscience (Franklin Lakes, NJ, USA). Troglitazone, clozapine, indinavir and acetonitrile (MeCN) were purchased from Wako Pure Chemicals (Osaka, Japan). Nefazodone hydrochloride, buspirone hydrochloride, ciprofloxacin, diclofenac sodium, ketoconazole and carbamazepine were purchased from Sigma-Aldrich (St Louis, MO, USA). Quetiapine fumarate was purchased from Toronto Research Chemicals (North York, Canada). Rimonabant was purchased from Santa Cruz Biotechnology (Dallas, TX, USA). [ 35 S]Cys, [ 14 C]KCN, Ultima FLO-M, and Deepwell LumaPlate-96 were purchased from PerkinElmer Life and Analytical Science (Boston, MA, USA). XBridge BEH C18 Column, 130Å, 3.5 µm, 4.6 mm × 150 mm and Sep-Pak tC18 96-well µElution Plates were purchased from Waters Corporation (Milford, MA, USA). Formic acid (FA) and dimethyl sulfide (DMSO) were purchased from Nacalai Tesque (Kyoto, Japan).
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9

Lipid Membrane Permeability Assay

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Troglitazone, pioglitazone, and rhodamine-123 were purchased from Wako Pure Chemical Industries, Ltd.
(Osaka, Japan). Phenformin was from Sigma-Aldrich Corp. (St. Louis, MO, USA), and calcein-AM was from Nacalai Tesque, Inc. (Kyoto, Japan). Hoechst 33342 was purchased from Thermo Fisher Scientific Inc. (Waltham, MA, USA), and bovine heart CL was from Avanti Polar Lipids (Alabaster, AL, USA). Other general reagents were of analytical grade and obtained from conventional commercial sources.
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