F9 nuclear extract
Active Motif's F9 nuclear extract was prepared from cell cultures of the mouse teratocarcinoma F9 stem cell line. This cell line expresses characteristics of early mouse embryonal cells and is considered to be nullipotent because of its inability to spontaneously differentiate. However, introduction of chemical agents, such as retinoic acid (RA), or transfection with oncogenic sequences, such as SV40 large T antigen, can induce differentiation of these cells. F9 cells readily differentiate into an endodermal-like derivative phenotype, but possess the ability to differentiate into derivatives of all three germ layers under the appropriate culture conditions, suggesting that these cells may be pluripotent. The F9 stem cell line is widely used in research to study the biomolecular mechanisms underlying differentiation.