细胞渗透性Wnt途径激活剂;Cell-permeable Wnt pathway activator;IQ-1可以使小鼠胚胎干细胞在Wnt/β-catenin信号的驱使下扩增并阻止其非定向分化。在经Wnt3a处理的细胞中,维持维持胚胎干细胞(ESC)多能性、阻止PP2A/Nkd的相互作用。;Q 1 has many functions such as decreasing Wnt-stimulated phosphorylation, maintaining the pluripotency of murine ESCs, preventing PP2A/Nkd interaction and so on. IQ 1 maintains the pluripotency of murine ESCs in long-term culture in a Wnt-dependent manner. IQ 1 decreased Wnt-stimulated phosphorylation of p300 at Ser-89.IQ-1 binds to serine/threonine phosphatase PP2A and prevents PP2A/Nkd interaction.The binding of IQ 1 to PR72/130 leads to decreased phosphorylation of the coactivator protein p300 at Ser-89. IQ 1 thereby diminishes the β-catenin/p300 interaction and prevents β-catenin coactivator switching from CBP to p300.