Figure 1From: Tramiprosate, a drug of potential interest for the treatment of Alzheimer's disease, promotes an abnormal aggregation of tauLevels of Tau in HEK 293 expressing Tau cell line. A) Immunofluorescence analysis of both HEK 293 and HEK 293 expressing Tau cell lines using antibodies against β-tubulin, tau protein (Tau-5) and phalloidin to identifiy actin polymers. The results obtained for untransfected (left) and tau-transfected (right) cells are shown. In the presence of Tau, tubulin bundles were observed (see arrows). Inset shows a microtubule bundle inside HEK 293 tau expressing cells. B) RNA was isolated from previously mentioned cell lines as described in Materials and methods and a quantitative RT/PCR analysis using actin RNA, as internal control, was done. The size of the amplified DNA was determined by gel electrophoresis; Tau DNA, lanes 2 and 4 and actin DNA (lanes 3 and 5) are shown. In lane 1, are Hind III fragments of φ29 DNA used as electrophoretic markers. The quantitation of the ratio Tau/actin in arbitrary units is shown. C) Total protein extract from HEK 293 and HEK 293 expressing tau was obtained and Western blot analysis using an antibody against β-actin and an antibody (ab 7.51) against Tau, was done.Back to article page