摘要
纺锤体组装检查点 (SAC) 是一种监视机制,可防止在中期到后期过渡时有丝分裂退出,直到所有染色体都与纺锤体微管建立正确的双极连接。 SAC 的激活依赖于有丝分裂检查点复合体 (MCC) 的组装,这需要在未连接的动粒处从非活动的开放 Mad2 (OMad2) 到活动的封闭 Mad2 (C-Mad2) 的构象变化。 Mad2 结合蛋白 p31comet 通过促进 SAC 沉默、阻止 Mad2 激活和促进 MCC 分解,在控制及时有丝分裂退出方面发挥关键作用。 此外,越来越多的证据强调了 p31comet 作为癌症治疗靶点的潜力。 在这里,我们提供了 p31comet 在有丝分裂进展中的功能意义的最新概述,并讨论了 p31comet 在癌症和治疗策略中表达失调的潜力。
关键词: p31comet,有丝分裂,Mad2,纺锤体组装检查点,有丝分裂检查点复合体,癌症,治疗靶点。
图形摘要
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