Publication protocol
Cultured cells were placed on ice, washed in ice-cold PBS and lysed using RIPA lysis buffer (cat. 20-188, Millipore, MA) containing Protease Inhibitor Cocktail Set I (cat. 539131, Millipore, MA). Cells were then scraped and incubated for 20 minutes at 4 ˚C. The lysate was spun down at 14,000 g for 20 minutes at 4 °C. The supernatant was removed for protein content measurement. Tissue extracts were prepared from frozen tumor tissues. Briefly, the tissue was cut into smaller pieces, and the total protein was extracted by TOTAL PROTEIN EXTRACTION KIT (cat. 2140, Millipore, MA). The protein content of cell lysates and tissue extracts were measured using Bradford reagent (BIO-RAD, Hercules, CA). A measure of 40 μg of total cell extract was separated on 10% SDS-polyacrylamide gel (30% Acrylamide/Bis Solution, 29:1, cat. 1610157, BIO-RAD, Hercules, CA) and transferred to Poly Screen polyvinylidene difluoride (PVDF) membranes (cat. NEF1002001PK, Perkin-Elmer life sciences, Boston, MA). The blot was blocked in 4% milk in TBST (10 mM Tris-HCl, 150 mM NaCl, and 0.05% Tween 20) for 1 hour, and then incubated with goat anti-HSV-1 Thymidine Kinase antibody (1:200, cat. sc-28038, Santa Cruz, CA), rabbit anti-ALDH1A1 antibody (1:1000, cat. ab9883, Abcam, Cambridge, UK), mouse anti-CD133 antibody (1:1000, Miltenyi Biotec GmbH, Bergisch Gladbach, Gemany), rabbit anti-snail1 (1:500, cat. GTX125918, GeneTex, USA), anti-Akt/PKB antibody (cat. 05-591, Millipore, MA) or anti-phospho-Akt antibody (cat. 05-1003, Millipore, MA) as primary antibody for 4 ˚C overnight. After repeated wash in TBST, the membrane was incubated with secondary anti-goat, anti-rabbit or anti-mouse IgG antibodies conjugated to horseradish peroxidase (1:5000, Abcam, Cambridge, UK) for 1 hour at room temperature. Immunoreactive bands were detected using LumiFast Chemiluminescence Detection Kit (T-Pro Biotechnology, cat. JT96-K001S, Taiwan, ROC). Image capture was performed on an ImageQuant™ LAS 4000 (GE Healthcare Bio-Sciences Corp., USA).
Full paper
Login or
join for free to view the full paper.