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3 protocols using 16 16 dimethyl pge2

1

Pharmacological Inhibitors for Epac1 and Epac2

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16,16-dimethyl-PGE2, L161,982, AH6809 and Forskolin were from Tocris Bioscience (Bristol, UK). Ly29004 was from Cell Signaling (Beverly, MA). The pharmacological inhibitor for Epac1, CE3F4 was developed by F. Lezoualc'h [37 (link)]. The pharmacological inhibitor for Epac2, ESI-05 was developed by X. Cheng [38 (link)]. TRIzol® was from Thermo Fisher Scientific (Waltham, MA). All other chemicals were of analytical grade.
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2

Analyzing Cell Proliferation Signaling

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BrdU, mouse anti-BrdU antibody, PI, L-161,982 and celecoxib were purchased from Sigma-Aldrich. 16,16-dimethyl-PGE2, XAV939, AH6809 and forskolin were from Tocris Bioscience (Bristol, UK). Niflumic acid was from Cayman Chemical (Ann Arbor, MI, USA). All other chemicals were of analytical grade.
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3

OT-1 T Cell Cytotoxicity Assay

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Splenocytes were isolated from OT-1 mice (4–6 weeks old) and activated with 100 nM OVA peptide (257–264; GenScript) and 50 U ml–1 hIL-2 (PeproTech) for 48 h. After 48 h, fresh medium with 50 U ml–1 IL-2 was added to the culture and incubated for an additional 24 h. Cells were then collected, replated and expanded at 1 × 106 cells per ml.
For the specific cytotoxicity assay, tumor cells (target) were plated at 50,000 cells per well in a 24-well plate. OT-1 T cells (effector) were then added at a 1:5 target:effector ratio. Where indicated, GPCR agonists were added at the following concentrations: 1 μM 16,16-dimethyl PGE2 (Tocris), 5 μM dobutamine hydrochloride (Tocris) and 5 μM CGS-21680 hydrochloride (Tocris). The coculture was left for 36 h, and cell viability was assessed by flow cytometric staining with Zombie Aqua viability dye (BioLegend).
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