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6 protocols using marcks

1

Protein Expression Analysis of Drug Combinations

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Cells were cultured in 10 cm-diameter dishes and treated with DMSO or each drug alone or in combination for 1 and 2 h, or for 3 days and 5 days, at synergistic doses. After separation by SDS-PAGE and transferring onto polyvinylidene difluoride (PVDF) mem-branes, protein extracts were probed with antibodies against pFAK (#8556), FAK (#3285), pMARCKS (#11992), MARCKS (#5607), pERK (#9101), ERK (#9102), cleaved and total PARP (#9542), and GAPDH (#97166), all purchased from Cell Signaling Technology, Danvers, MA, USA. GAPDH immunoblotting was used to quantify and normalize results. Immunolabelled proteins were detected using Odyssey secondary antibodies coupled to a 700 or 800 nm and the Odyssey Infrared Imaging System (Li-cor).
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2

Protein Expression Analysis by Western Blot

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Cells were lysed in Triton X-sample buffer and separated by SDS-PAGE. Proteins were detected using specific antibodies directed against β-actin (BioVision via BioCat GmbH, Heidelberg, Germany), PKCα (abcam, Cambridge, UK), PKCβ (BD Biosciences, Heidelberg, Germany), MARCKS (Cell Signaling Technology, Danvers, MA), and phosphorylated MARCKS (Cell Signaling Technology). Protein bands were visualised by enhanced chemiluminescence using a commercially available kit (Amersham, Freiburg, Germany).
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3

Molecular Signaling Pathway Inhibitors

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CEP-1347 was purchased from TOCRIS Bioscience (Bristol, UK). Gö6976, Crystal Violet (C.I. 42555), and Trypan Blue solution (0.4%) were obtained from Merck KGaA (Darmstadt, Germany). Propidium iodide and Hoechst33342 were supplied by Thermo Fisher Scientific (Waltham, MA, USA). An antibody against MDM4 (A700-000-T) was purchased from BETHYL (FORTIS LIFE SCIENCES, Waltham, MA, USA). An antibody against MDM2 (AF1244) was purchased from R&D Systems (Minneapolis, MN, USA). A p53 antibody (sc-126) was from Santa Cruz Biotechnology, Inc. (Santa Cruz, CA, USA). Antibodies against GAPDH (#5174), p21 Waf1/Cip1 (cyclin-dependent kinase inhibitor 1A, CDKN1A) (#2947), Myristoylated alanine-rich protein kinase C (PKC) substrate (MARCKS) (#5607), Phospho-MARCKS (Ser152/156) (#2741), Phospho-PKC (pan) (βII Ser660) (#9371), Phospho-PKCα/β II (Thr638/641) (#9375), Phospho-PKCδ (Thr505) (#9374), and Phospho-PKCθ (Thr538) (#9377) were from Cell Signaling Technology, Inc. (Beverly, MA, USA).
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4

Neutrophil Activation Assays Utilizing Diverse Reagents

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Ficoll-Paque Plus and Dextran T500 were from GE Healthcare (Sweden). Dimethyl sulfoxide (Me2SO), f-Met-Leu-Phe (fMLF), phorbol 12-myristate 13-acetate (PMA), Triton-X 100, pepstatin, HEPES, staurosporine, Protein kinase C-ζ pseudosubstrate and poly-l-lysine were from Sigma Chemical Co. (St. Louis, MO). Rottlerin, Gö6976 and CG53353 were from Calbiochem (Billerica, MA). Powdered phosphate-buffered saline (PBS) and Hank’s balanced salt solution (HBSS) were from Life Technologies (Grand Island, NY). Ethylenediamine tetraacetate dihydrate (EDTA) was from Fisher Scientific (Atlanta, GA). Leukotriene B4 (LTB4) was from Cayman Chemical (Ann Arbor, MI). Interleukin 8 (IL-8) was from Sigma-Aldrich Co. LLC (St. Louis, MO, USA). Fetal calf serum (FCS) was obtained from Hyclone (Logan, UT). MARCKS, Phospho-MARCKS, PKC α, PKC δ, PKC ζ primary antibodies and anti-rabbit HRP-conjugated secondary antibody were obtained from Cell Signaling (Beverly, MA). PKC β was from Invitrogen (Frederic, MD). Diisopropylfluorophosphate (DFP) was from BD Biosciences (San Diego, CA).
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5

Western Blot Analysis of Signaling Proteins

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Antibodies for STAT3, p-STAT3-S727, p-STAT3-Y705, Mcl-1, Ran, STAT1, p-STAT1-Y701, p-STAT1-S727, STAT2, p-STAT2-Y690, STAT5, Akt-S473, BTK, p-BTK-Y223, p-ERK (T202/Y204), ERK, p-MARCKS (Ser 152/156), MARCKS, survivin, XIAP, cyclin D1, p21 and β-actin were purchased from Cell Signaling Technology Inc (Danvers, MA, USA). The anti-FLAG antibody was purchased from Sigma (St Louis, MO, USA). For western blotting, precasted Nupage electrophoresis gels were purchased from Invitrogen (Carlsbad, CA, USA) and chemiluminescence reagent was obtained from Thermo Scientific (Waltham, MA, USA). STAT3 inhibitor, Stattic; MEK inhibitor, U0126 and PKC inhibitor, Bis-I were purchased from Sigma. BTK inhibitor, ibrutinib, was purchased from MedChem Express (Monmouth Junction, NJ, USA).
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6

Reagents and Antibodies Utilized

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Enmein was purchased from Tauto Biotech (Shanghai, China) at 98% purity. 4-AP, bafilomycin A1, GF109203X and Go6976 were purchased from Tocris Cookson (Bristol, UK). Fura-2-AM was purchased from Invitrogen (Carlsbad, CA, USA). ω-CgTX GVIA and ω-AgTX IVA were purchased from the Alomone lab (Jerusalem, Israel). PKC, PKC-α, MARCKS, EAAT3, synaptophysin, GFAP and β-actin antibodies were obtained from Cell Signaling (Beverly, MA, USA). EAAT2, PSD95, CD11b p-PKC and p-PKC-α, antibodies were obtained from Abcam (Cambridge, UK). NeuN antibody was obtained from Merck Millipore (Billerica, MA, USA). Horseradish peroxidase-conjugated secondary antibodies were obtained from Genetex (Zeeland, MI, USA). Alexa Fluor 488 and DyLight 594 were obtained from Invitrogen (Waltham, MA, USA). KA, DMSO, Cresyl violet, 4′,6-diamidino-2-phenylindole (DAPI) and general reagents were purchased from Sigma Chemical Co. (St Louis, MO, USA).
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