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2 protocols using supersignal west pico chemilumenscence

1

Notch1 Signaling Pathway Analysis

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Nuclear lysates were prepared using the Active Motif nuclear complex coimmunoprecipitation kit (54001), and whole-cell lysates were prepared with RIPA buffer; protease inhibitors were included for both. Protein concentration was determined with the Bio-Rad protein assay dye reagent (Bio-Rad). Proteins were separated using SDS-PAGE and transferred to PVDF membranes. Antibodies used for Western blot were cleaved Notch1 (Val1744) antibody (Cell Signaling Technology, no. 2421), MAML1 (D3E9) rabbit mAb (Cell Signaling Technology, no. 11959), β-actin (Sigma), and secondary anti-mouse-HRP (Pierce) or anti-rabbit-HRP (Pierce). Blots were visualized with SuperSignal west pico chemilumenscence (Thermo Scientific) or SuperSignal west femto chemilumenscence substrate (Thermo Scientific).
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2

Western Blot Analysis of Cellular Signaling

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Whole-cell lysates were prepared with RIPA buffer supplemented with protease inhibitors (Roche), NaF (10mM), PMSF (1mM) and Na3VO4 (1mM) or cells were directly lysed in SDS sample buffer. Proteins were separated using SDS-PAGE and transferred to PVDF membranes. Antibodies used for immunoblot from Cell Signaling Technology were pS473 AKT (4051), AKT (4691), pT202/Y204 ERK (9101), ERK (9102), Trib2 (13533), and C/EBPα (8178). The antibody against TAL1 was purchased from Santa Cruz Biotechnology (sc-12984). β-actin (A5316; Sigma) was used as a loading control. Secondary anti-mouse-HRP (NA931V) and anti-rabbit-HRP (NA934V) were obtained from GE Healthcare. Blots were visualized with SuperSignal west pico chemilumenscence (34080; Thermo Scientific) or SuperSignal west femto chemilumenscence substrate (34095; Thermo Scientific).
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