Total protein extracts, SDS-PAGE separation and Western Blot were performed with standard methods as described elsewhere57 (link),58 (link). Antibodies were as follows: goat anti-β-actin #SC-1616, mouse anti-α Tubulin TU-02 #SC-8035, rabbit anti-CCND1 #SC-717 and mouse anti-MYCN #SC-53993, mouse anti-Vinculin #SC-73614, mouse anti-Math1 (DSHB), goat anti-DCX # SC-8066 (Santa Cruz Biotechnology); rabbit anti-PARP1 #9542, mouse anti-Gli1 #L42B10, rabbit anti-cleaved caspase-3 #9661 (Cell Signaling Technology Inc); rabbit anti-Myc #C3956 (Sigma Aldrich); rabbit anti-ZIC1 ab72694 (ABCAM), rabbit anti-Pax6 #PRB-278P (BioLegend), mouse anti-Nestin ab11306 (ABCAM). All antibodies were previously used in56 (link),59 (link)–63 (link). Immunoreactive bands were visualized by enhanced chemoluminscence using WesternBright ECL HRP substrate (Advansta).
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