Figure 1. PAK4 expression analysis in pancreatic cancer tissue specimens and cell lines.
(A) Immunohistochemical assay was performed on paraffin embedded tissue microarray containing tissue sections (in triplicates) of normal pancreas (n=9) and pancreatic tumor (n=56) using PAK4 specific antibody. PAK4 expression was examined by immunoblot assays in (B) frozen pancreatic tissues [normal (n=7) and malignant n=21] specimens, (C) PC cell lines and (D) in vitro pancreatic cancer progression model (hTERT-HPNE and derived cell lines). β-actin was used as internal control. Bars (mean ± SEM, n=3) indicate the normalized expression levels of PAK4.