Figure 1.
Testing the specificity of anti-PDEF antibodies by Western blotting and immunohistochemistry. Panel A shows analysis of PDEF protein expression in breast and non-breast tumor cell lines by Western blotting. Equal amounts of total protein from breast tumor cell lines MCF-7, SKBR3 and from non-breast tumor cell lines Hela and U937 were run on 12% SDS PAGE and transferred to nitrocellulose membrane. The upper-half of this panel shows the result of probing the blot with anti-PDEF antibodies and the lower-half shows a similar blot following probing with anti-actin antibody. The Panels B, C and D respectively show specific nuclear staining of PDEF protein in the epithelial tumor cells from MCF-7 breast tumor cell line and in tissue section from a primary breast carcinoma and a primary prostate carcinoma.