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4 protocols using ge amersham imager ai680

1

Western Blot Protein Analysis

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The cells and bone tissues were lysed with RIPA buffer (Thermo Scientific). The total proteins were measured spectrophotometrically using Pierce Coomassie Plus (Bradford) Protein Assay kit (Thermo Scientific). Normalized protein samples were separated by SDS-PAGE electrophoresis and transferred to PVDF membranes for 2hrs in a cold transfer buffer. The membranes were blocked with 10 ml of PBST containing 5% BSA (GoldBio) for 30 min, incubated with primary antibodies (Table S8) at 4 °C overnight, secondary antibodies (Table S8) for 2hrs at room temperature and Pierce™ ECL Western Blotting Substrate (Thermo Scientific). The targeted protein band intensities were analyzed using GE Amersham Imager AI680.
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2

Western Blot Analysis of U251 and U87 Cells

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U251 and U87 cells were lysed using the RIPA Lysis Buffer (AR0105–100, Boster, Pleasanton, CA, USA) containing 1 mM phenylmethylsulfonyl fluoride (PMSF). After being centrifuged, the protein concentration was measured with a bicinchoninic acid (BCA) protein assay kit (C503021, Sangon Biotech). The proteins were electrophoresed on 12–15% SDS–PAGE gels and then transferred onto polyvinylidene fluoride (PVDF) membranes. After that, the membranes were incubated with 5% skimmed milk for 1 h at room temperature (RT), indicated primary antibodies overnight at 4 °C, and then with the appropriate secondary antibodies for 1 h at RT in turn. The blots were imaged with an enhanced chemiluminescence detection system and GE Amersham Imager AI680 (GE, Chicago, IL, USA). β-actin was used as a loading control. Data were analyzed by ImageJ software (US National Institutes of Health).
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3

Western Blot Analysis of Protein Samples

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Cells and tissues were lysed in radioimmunoprecipitation assay lysis buffer. Total protein was determined using a BCA Protein Assay Kit (Beyotime, Shanghai, China). Equivalent amounts of total protein were separated by sodium dodecyl sulfate–polyacrylamide gel electrophoresis and transferred to a nitrocellulose transfer membrane (GE Healthcare Life Sciences, Chicago, IL, USA). Primary antibodies were incubated overnight at 4°C after blocking with 5% nonfat milk for 2 hours. The membranes were then incubated with horseradish peroxidase–conjugated secondary antibodies for 2 hours at room temperature. Finally, the proteins were visualized with chemiluminescence reagents (Beyotime, China). The films were scanned using a GE Amersham Imager AI680 (GE Healthcare Life Sciences).
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4

Protein Denaturation and Western Blotting

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Samples were denatured in SDS sample buffer (6X) (0.375 M Tris pH 6.8, 12 % SDS, 60 % glycerol, 0.6 M DTT, 0.06 % bromophenol blue) for 5 min at 95 °C. 10–20 μg of protein was resolved on a 4–12% NuPAGE BisTris SDS–PAGE (Invitrogen) with MOPS SDS Running Buffer (Sigma Aldrich, M1254).
SDS-PAGE used for silver staining (Life Technologies, 24612) were processed according to the manufactures protocol, respectively.
For western blot, SDS-PAGE was transferred to a polyvinylidene difluoride (PVDF) membrane (Millipore, IPVH00010) using Towbin transfer buffer (25 mM Tris, 192 mM glycine, 20% (v/v) methanol). To control for correct loading and transfer, Ponceau staining was performed according to manufactures instructions (Sigma Aldrich, P7170). Membranes were blocked in 5% BSA or 5% milk in TBS containing 0.05% Tween (TBST) and incubated overnight at 4 °C with primary antibody. Secondary HRP-conjugated antibodies were used, membranes were incubated in Immobilon Crescendo Western HRP substrate (Fisher Scientific, WBLUR0500), and imaged (GE Amersham Imager AI680). Used antibodies are displayed in the key resource table.
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