Abstract
Embryonic stem cells (ESCs) are characterized by their ability to self-renew and their potential to differentiate into any cell type. Therefore, identification of novel molecular markers to verify the pluripotent status of mouse ESCs (mESCs) is of great significance. Kinase D interacting substrate of 220 kDa (Kidins220)/ankyrin repeat-rich membrane spanning (ARMS) plays a crucial role in the integration of growth factor receptor pathways during embryonic development. However, the role of Kidins220/ARMS in ESCs is still unknown. To elucidate the effects of Kidins220/ARMS on ESCs, we performed a knockdown of the Kidins220/ARMS gene by RNA interference. To our surprise, downregulation of Kidins220/ARMS did not alter the pluripotent state of mESCs. In contrast, it was essential for the proliferation and survival of ESCs. Furthermore, downregulation of the ARMS gene limited the migration of embryoid body cells derived from mESCs. This study indicates novel roles of Kidins220/ARMS in ESCs, which may represent valuable targets for future clinical applications of ESCs.
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