Fig. 4

Thieno[2,3-b] induce multinucleated phenotype but not microtubules bundle formation. The effect of paclitaxel and derivative 3 on MDA-MB-231 breast cancer cells with microtubule filaments stained with FITC-labelled anti-tubulin antibody (green fluorescence). DNA in the nucleus was stained with Hoechst staining (blue fluorescence). Cells were treated with or without drugs for 16 h. Multi-nucleated cells were observed by derivative 3 treatment. The arrow indicates membrane blebbing