SYN1 and cancer: We conclude that the relative ability of the cells to spread the GFP gene correlates with Syn1 expression (PC3 more efficient donors than RWPE-2 more efficient than DU145 and RWPE-1), and normal cells expressing high levels of Syn1 (e.g., RWPE-2) can be better donors than cancer cells that express relatively low amounts of Syn1 (e.g., DU145).