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2 protocols using cay10502

1

Inflammatory Cytokine Signaling Assay

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PBS was from Oxoid. DNAse- and RNAse-free water was from VWR. Recombinant human TNF and IL-6 ELISA Duoset were from R&D systems. Quantitect primer assays for TLR1-7 and 18S were from Qiagen. QuantiTect Reverse Transcription kit, RNeasy minikit, Leupeptin, pepstatin and LightCycler 480 SYBR Green I Master mix were from Roche Molecular Biochemicals. RNAlater was from Life technologies. FSL-1 and Pam3CSK4 were from Invivogen. [3H]-arachidonic acid ([3H]-AA), and liquid scintillation cocktail Ultima Gold were from NEN Perkin Elmer. AVX002 and Inhibitor 28 were provided by Avexxin AS (Trondheim, Norway). Arachidonyl trifluoromethyl ketone (AACOCF3, ATK) was from Enzo Life Sciences. Varespladib (LY315920) was from Selleckchem. CAY10502, CAY10590 and PGE2 ELISA kit were from Cayman Chemicals. Phospho-cPLA2 (Ser505) antibody was from Cell Signal Technology. α-tubulin antibody was from Santa Cruz Biotechnology. Polyclonal goat anti-mouse immunoglobulins horse radish peroxidase-conjugated secondary antibody was from Dako. Hybond-C nitrocellulose membranes were from GE healthcare. NuPAGE gel system (10% Bis-Tris gel) was from Invitrogen. Hybond-C nitrocellulose membranes were from GE healthcare. SuperSignal West Femto Maximum Sensivity substrate was from Thermo Scientific. All other reagents were from Sigma-Aldrich.
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2

Quantifying Cell Injury and Survival in RPE Cells

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Lactate dehydrogenase (LDH) release was used to quantitatively access cell injury in cells exposed to SI. Inhibitors of PLA2 were used to identify their influence on RPE cell survival. The iPLA2-VIA-specific inhibitors included bromoenol lactone (BEL; BioNordika, Herlev, Denmark, Cayman Chemicals, Product number 13179) and 1, 1, 1, 2, 2- pentafluoro- 7- phenyl- 3- heptanone (FKGK; Cayman). Additionally, the cPLA2-IVA inhibitor CAY 10502 (Cayman) as well as the combined cPLA2-IVA and iPLA2-VIA inhibitor arachidonyl trifluoromethylketone (AACOCF3; Sigma) were used. LDH-release was assayed using a MWG Discovery HT-R spectrophotometer. In addition, cell viability was determined by the colorimetric assay 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide (MTT) according to the manufacturer's instructions.
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