A protein called “fascin” appears to play a critical transformation role in TGF beta mediated tumor metastasis, say researchers at Moffitt Cancer Center in Tampa, Fla., who published a study in a recent issue of the Journal of Biological Chemistry. According to study corresponding author Shengyu Yang, Ph.D., of Moffitt’s Comprehensive Melanoma Research Center and the Department of Tumor Biology, elevated Transforming Growth Factor beta in the tumor microenvironment may be responsible for fascin over-expression, which in turn can promote metastasis in some metastatic tumors.