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7 protocols using anti cugbp1

1

Protein Detection by Western Blotting

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Proteins were resolved on SDS polyacrylamide (PAA) gels (12.5%) and transferred to nitrocellulose membranes (Bio-Rad, #1,620,115). Membranes were blocked in PBS containing 0.1% Tween-20 and 3% BSA and probed with the designated primary antibodies and with IRDye 800CW (Licor #926-32,210, #926-32,211) or IRDye 650RD secondary antibodies (Licor #926-68,070, #926-68,071). The blots were visualized with the Odyssey® CLx Imaging System. The following primary antibodies were used: anti-β-actin (1:2,000; Sigma, #A1978), anti-β-Tubulin (1:2,000; Sigma, #T0198), anti–ELAVL1 (1:500; Santa Cruz, #sc-5261), anti-KHSRP (1;1000; Cell Signalling, #13,398), anti-SNW1 (1:1,000; Abcam, #ab67165), anti-PDAP1 (1:500; Cell Signalling, #4300), anti-p53 (1:1,000; Cell Signalling, #9282), anti-CDKN1B/p27 (1:500; Cell Signalling, #3686), anti-hnRNPD (1:1,000; Millipore, #07-260), anti-CUGBP1 (1:500; Santa Cruz, #sc-20,003) and anti-GFP (1:2,000; Roche, #11,814,460,001).
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2

Western Blot Analysis of Protein Expression

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30 μg of protein from whole cell lysates was resolved on 10% SDS-PAGE gels (Bio-Rad Laboratories, Hercules, CA) and transferred onto PVDF membranes (GE Healthcare, Piscataway, NJ). After transfer, membranes were blocked in 5% nonfat milk in TBST and membranes were incubated with specific antibodies (overnight at 4°C) followed by horseradish peroxidaseconjugated anti-mouse or anti-rabbit (Santa Cruz, Dallas, TX) immunoglobulin for 1 hour at RT. Signal was detected by Chemiluminescence Reagent (PerkinElmer, Waltham, MA) and visualized by autoradiography. Anti-human survivin antibody was purchased from R&D Systems (Minneapolis, MN). Anti-CUG-BP1, anti-HuR, and anti-GAPDH antibodies were purchased from Santa Cruz Biotechnology (Dallas, TX). All primary anti-bodies were used at a dilution of 1:2000 and all secondary antibodies were used at a dilution of 1:4000. Signal intensity was quantified using Image Lab quantification software (Bio-Rad, Hercules, CA).
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3

Immunoblotting Protocol for Protein Detection

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Whole cell extracts or immunoprecipitated protein complexes were resolved by electrophoresis using SDS-10% polyacrylamide gel (Bio-Rad, Hercules, CA) and transferred to nitrocellulose membranes (Thermo Fisher Scientific, Waltham, MA). Membranes were blocked with 5% milk in Tris-buffered saline/Tween-20 for 1 hr at room temperature, and then probed overnight at 4°C with pan-specific anti-NFI (Cat #sc-74444), anti-Ago1 (Cat #sc-376696), anti-HuR (Cat #sc-5261),anti-CUGBP1 (Cat #sc-56649) (Santa Cruz Biotechnology, Santa Cruz, CA), or anti-Ago2 (clone #4G8; Wako, Richmod, VA) antibody. After washing, blots were incubated with the appropriate HRP-conjugated secondary antibody for 2 hr at room temperature. Proteins were detected with the enhanced chemiluminescence detection system (Thermo Fisher Scientific, Waltham, MA), the bands were visualized using the ChemiDoc XRS System (Bio-Rad), and the images were captured with the Image Lab Software V3.0. Membranes were stripped and reprobed with β-actin antibody (Santa Cruz) as a loading control.
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4

Western Blot Protein Detection

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Following cell lysis, protein concentration was assessed using the Bio-Rad DC Protein Assay (Bio-Rad:500–0111) and protein (2–40 μg) was resolved by denaturing polyacrylamide gel electrophoresis (SDS-PAGE) and transferred to polyvinylidene fluoride (PDVF) membranes (Immunobilon Transfer Membranes:IPVH00010). Transferred membranes were blocked with 5% milk for 30 minutes and probed with appropriate antibody in 1% milk solution for either 1 hour at room temperature or 12 hours at 4°C, with three 10 min washes with 1XPBS-0.05% Tween 20 between each antibody incubation. Antibodies included: Anti-Stau1 [1:1000] (Abcam:ab73478), Anti-GAPDH [1:10,000] (Abcam:ab8245), Anti-β-Actin [1:500] (Santa Cruz:sc-47778), Anti-CUGBP1 [1:1000] (Santa Cruz:sc-20003), Anti-hnRNP H [1:5000] (Abcam:10374), Anti-MyoD [1:300] (BD Pharmingen: 554130), Anti-MBNL1 antibody [1:300] (Abnova:H00004154), Anti-HA F7 probe [1:1000] (Santa Cruz:sc-7392). Secondary antibodies included: Mouse-anti-Rabbit HRP [1:20,000] (Jackson ImmunoResearch:211-032-171) and Goat-anti-Rabbit HRP [1:10,000] (Molecular Probes:MP 02764). Proteins on membranes were detected with Millipore-Luminata Crescendo Western HRP Substrate (WBLUR0500) and visualized on film (HyBlot CL Autoradiography Film:E3018).
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5

Western Blot Analysis of Protein Expression

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30 μg of protein from whole cell lysates was resolved on 10% SDS-PAGE gels (Bio-Rad Laboratories, Hercules, CA) and transferred onto PVDF membranes (GE Healthcare, Piscataway, NJ). After transfer, membranes were blocked in 5% nonfat milk in TBST and membranes were incubated with specific antibodies (overnight at 4°C) followed by horseradish peroxidaseconjugated anti-mouse or anti-rabbit (Santa Cruz, Dallas, TX) immunoglobulin for 1 hour at RT. Signal was detected by Chemiluminescence Reagent (PerkinElmer, Waltham, MA) and visualized by autoradiography. Anti-human survivin antibody was purchased from R&D Systems (Minneapolis, MN). Anti-CUG-BP1, anti-HuR, and anti-GAPDH antibodies were purchased from Santa Cruz Biotechnology (Dallas, TX). All primary anti-bodies were used at a dilution of 1:2000 and all secondary antibodies were used at a dilution of 1:4000. Signal intensity was quantified using Image Lab quantification software (Bio-Rad, Hercules, CA).
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6

Immunofluorescence analysis of cell adhesion and cytokine expression

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Cells adhered to glass coated with BD Cell-Tak Cell and Tissue Adhesive (BD PharMingen, San Jose, CA) were fixed with 4% paraformaldehyde (40 min, room temperature), stained with the following antibodies: anti-CUGBP1 (Santa Cruz Biotechnology, SC-20003, 1: 100), α-SMA (Santa Cruz Biotechnology, SC-32251, 1: 50), anti-IFN-γ (Abcam, ab133566, 1: 200)and detected with secondary antibodies: goat anti-mouse IgG2a conjugated to Alexa Fluor 594 (Invitrogen, A-21135, 1: 1,000), goat anti-mouse IgG1 conjugated to Alexa Fluor 647 (Invitrogen, A-21240, 1: 1,000), goat anti-rabbit IgG conjugated to Alexa Fluor 488 (Invitrogen, A-11008, 1: 1000). The coverslips were counterstained with DAPI and imaged with a confocal laser scanning microscope (Olympus, Lake Success, NY). Examination was blindly carried out.
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7

Antibody Detection in Cell Lines

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The antibodies used were anti-DDX3 (Bethyl Laboratories/Cederlane, Burlington, Canada), anti-TIA1 and anti-CUGBP1 (Santa Cruz Biotechnology, Santa Cruz, CA), anti-PABP1 (Cell Signalling/New England Biolabs, Whitby, Canada), anti-Staufen1 and anti–glyceraldehyde-3-phosphate dehydrogenase (GAPDH; Abcam/Cederlane), and anti-MyHC (MF20; Developmental Studies Hybridoma Bank, Iowa City, IA).
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