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2 protocols using clone dx2

1

Evaluating miRNA Effects on APAP- and FAS-Induced Hepatocyte Damage

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For APAP-induced hepatocyte damage, hepatocytes were treated with 3 mg ml−1 APAP (Sigma) at 24 h after miRNA transfection. Likewise, for FAS-induced hepatocyte damage, hepatocytes were treated with 1 μg ml−1 Hamster anti-mouse CD95 antibody, clone Jo2 (BD Pharmingen) for (mouse hepatocytes) or mouse anti-human CD95 antibody, clone Dx2 (BD Pharmingen) (for human hepatocytes) at 24 h after miRNA transfection. The cell viability was measured by WST-1 assay (Roche, Switzerland) at 6 h after CD95 or APAP treatment. Absorbance was measured at 440 nm. In vivo ALF was induced by intraperitoneal injection of 350 mg kg−1 APAP (Sigma) in 8- to 10-week-old BALB/c mice. Likewise, for FAS-induced ALF, 0.5 μg  per gram body weight Hamster anti-mouse CD95 antibody (BD Pharmingen) was injected intraperitoneally. Mice were either monitored for survival or killed 6 h after injection. Liver tissues were harvested and immediately snap frozen in liquid nitrogen and fixed in 4% paraformaldehyde (Sigma).
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2

Multiparametric Flow Cytometry of PBMCs

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Freshly-isolated PBMCs (5×105 cells) were surface stained with the viability dye, Aqua Amine Reactive Dye (Invitrogen), as well as monoclonal antibodies directed against CD3 (Clone SP 34-2, BD Biosciences), CD4 (NIH-Nonhuman Primate Reagent Resource Program), CD8 (Clone 3B5, Invitrogen), CD25 (Clone M-A251, BD Biosciences or Clone 4E3, Miltenyi), CD95 (Clone DX2, BD Biosciences) or CD45RA (Clone 2H4, Beckman Coulter), CD27 (Clone M-T271, BD Biosciences) or CD28 (Clone CD28.2, BD Biosciences), and CD127 (Clone hIL-7R-M21, BD Biosciences) for 20 minutes at room temperature, fixed and then permeabilized with Affymetrix FoxP3 Fix/Perm Buffers (Affymetrix) per the manufacturer’s instructions. Permeabilized cells were then stained intracellularly for Ki-67 (Clone B56, BD Biosciences) and FoxP3 (Clone PCH101, Affymetrix) for 30 minutes at 4°C, washed in PBS-2% FBS and analyzed by flow cytometry. A minimum of 150,000 events was acquired on a BD LSRII flow cytometer (BD Biosciences) and analyzed using FlowJo software (Tree Star, Inc.).
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