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2 protocols using anti phospho perk1 2

1

Quantification of Protein Signaling Pathways

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Western blot was performed according to a previously described method [32 (link)] with antibodies for anti-human KLF17 (1:200, Santa Cruz, CA; 1:200, Sigma, CA), anti-uPA (1:200, Sigma, CA), anti-Phospho-p38/MAPK, anti-Phospho-pERK1/2, anti-Phospho-pSAPK/JNK, anti-Phospho-Akt, anti-Phospho-p44/42/MAPK, anti- Phospho-PI3-Kinasep85 and anti-Phospho-Src (Tyr527) (Cell Signaling Tech., Danvers, MA). Anti-GAPDH (Bioworld Tech, Inc., Nanjing, China) was used to detect the internal control.
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2

Immunoblot Analysis of Signaling Pathways in Tumor Xenografts

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Protein concentrations of the total cellular protein extracts from tumor xenografts and cell line lysates were determined using the Bio-Rad protein assay (Bio-Rad, Hercules, CA, USA). Total protein (50 μg per sample) from either tumor xenograft or cell line lysates was electrophorectically separated on 10% SDS polyacrylamide gels and electro-blotted onto a Hybond membrane. After incubation with 5% nonfat milk in Tris-buffered saline containing 0.1% Tween-20, the blots were probed with anti-phospho p-Erk1/2 (Thr202/Tyr204), p-Creb (Ser133), p-Rsk2 (Ser386), p-Src (Tyr416), p-Fak (Tyr576/577), p-Pax (y118), p-Pkcα (s657), and p-Stat3 (y705), polyclonal rabbit antibodies (Cell Signaling Technology Inc., Davners, MA). The same blots were subsequently stripped and re-probed with anti-total (t) Her2, Her3, Erk1/2, cSrc, Creb, Fax, Pax, Pkcα, Rsk2, Stat3, Fascin, E-Cadherin, β-Cadherin, Vimentin, Snail, and β-Actin antibodies (Cell Signaling Technology Inc.).
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