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3 protocols using cid2858522

1

EGF and TNFα Signaling Analysis

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DK-MG cells were seeded in 6-well plates at 2×105 cells per well for western blot analysis or at 4×104 cells per well for real-time observation, incubated overnight to allow for adhesion and serum starved for subsequent 24h. Serum free medium containing appropriate inhibitors was applied onto cells and incubated for indicated amount of time, prior to stimulation with 20ng/mL EGF (Sigma-Aldrich) or 5ng/mL TNFa (Cell Signaling Technology) for 20 or 30min, as indicated, prior to lysis for western blotting or left for real-time observation. Following concentrations of inhibitors were used: DMSO (Sigma, Cat. No.D2438, solvent control), 10 μM Erlotinib (Molecula; Cat. No. 89983631), 2.5 μM ACHP (Tocris Bioscience, Cat. No. 4547), 1 μM CID2858522 (Tocris Bioscience, Cat. No. 4246).
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2

Evaluating NF-κB Modulators in Cell Assays

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NF-κB antagonist and agonists: TNFα (315–01A, Peprotech, Rocky Hill, NJ, USA ), Prostratin (5739, Tocris, Bristol, UK), CGS 21680 HCl (1063, Tocris), Betulinic acid (53603, Selleck Chemicals, Houston, TX, USA), PSI (4045, Tocris), Cardamonin (2509, Tocris), Bay 11–7082 (S2913, Selleck Chemicals), Bay 11–7085 (S7352, Selleck Chemicals), RO 106–9920 (1778, Tocris), TPCA-1 (S2824, Selleck Chemicals), Ikk-16 (S2882, Selleck Chemicals), PF 184 (4238, Tocris), IMD 0354 (2483, Tocris), Andrographolide (S2261, Selleck Chemicals), Costunolide (2483, Tocris), CID 2858522 (4246, Tocris), Pictilisib (S1065, Selleck Chemicals), Luteolin (S2320, Selleck Chemicals), Celastrol (1571, Tocris), Artemisinin (2668, Tocris). Cells were plated (at a seeding density of 1x104 for 96 well plates and 1x103 for 384 well plates) 12 h before treatment. Cells were treated with drugs at a range of concentrations either with fresh media (for agonists and vehicle only control) or fresh media with 5ng/ml TNFα (for antagonists and vehicle control) and incubated for 24 h. Each drug dose was performed in triplicate or quadruplicate and experiments were repeated at least three times.
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3

Modulation of DFC Differentiation by PKC, Akt, and NF-κB

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For examining the role of classical PKCs on the differentiation of DFCs, the cells were treated with 100 nM specific inhibitor Gö 6976 (Tocris) in addition to the media. To study the role of Akt, DFCs were treated with 10 μM Akt activator SC-79 (Sigma-Aldrich) or 200 nM Akt inhibitor MK-2206 (Santa Cruz Biotechnology, Dallas, USA). Besides, NF-κB was stimulated by supplementation of media with 200 nM phorbol 12-myristate 13-acetate (PMA) (Abcam, Cambridge, UK), which activates NF-κB via PKC, or inhibited with up to 500 nM (concentrations as indicated in figure legends) ACHP as general NF-κB inhibitor or CID2858522 as specific inhibitor of PKC-dependent NF-κB activation (both Tocris). All chemicals were dissolved in dimethyl sulfoxide (DMSO) and diluted in differentiation or control medium.
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