首页> 外文期刊>Advances in anatomy embryology and cell biology. >ROCK and RHO Playlist for Preimplantation Development: Streaming to HIPPO Pathway and Apicobasal Polarity in the First Cell Differentiation
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ROCK and RHO Playlist for Preimplantation Development: Streaming to HIPPO Pathway and Apicobasal Polarity in the First Cell Differentiation

机译:岩石和rho播放列表用于造影开发:在第一细胞分化中旋转到河马途径和非缺氧性极性

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In placental mammalian development, the first cell differentiation produces two distinct lineages that emerge according to their position within the embryo: the trophectoderm (TE, placenta precursor) differentiates in the surface, while the inner cell mass (ICM, fetal body precursor) forms inside. Here, we discuss how such position-dependent lineage specifications are regulated by the RHOA subfamily of small GTPases and RHO-associated coiled-coil kinases (ROCK). Recent studies in mouse show that activities of RHO/ROCK are required to promote TE differentiation and to concomitantly suppress ICM formation. RHO/ROCK operate through the HIPPO signaling pathway, whose cell position-specific modulation is central to establishing unique gene expression profiles that confer cell fate. In particular, activities of RHO/ROCK are essential in outside cells to promote nuclear localization of transcriptional co-activators YAP/TAZ, the downstream effectors of HIPPO signaling. Nuclear localization of YAP/TAZ depends on the formation of apicobasal polarity in outside cells, which requires activities of RHO/ROCK. We propose models of how RHO/ROCK regulate lineage specification and lay out challenges for future investigations to deepen our understanding of the roles of RHO/ROCK in preimplantation development. Finally, as RHO/ROCK may be inhibited by certain pharmacological agents, we discuss their potential impact on human preimplantation development in relation to fertility preservation in women.
机译:在胎儿哺乳动物的发展中,第一细胞分化产生两种不同的谱系,这些谱系是根据其在胚胎内的位置出现的不同谱系:促肾小组(TE,胎盘前体)在表面上区分,而内部电池质量(ICM,胎儿体前体)在内部形成。在这里,我们讨论了小GTP酶的RhOA亚家族和RHO相关的卷绕线酶(岩石)的rhOA亚家族如何调节这些位置依赖性规范。近期的小鼠的研究表明,rho /岩石的活动是促进TE分化并伴随ICM的形成。 Rho / Rock通过Hippo信号传导途径操作,其细胞位置特异性调制是建立赋予细胞命运的独特基因表达曲线的中心。特别是,Rho /岩石的活动在外部细胞中是必不可少的,以促进转录共激活剂YAP / TAZ的核定位,河马信号传导的下游效应。 YAP / TAZ的核定位取决于外部细胞中的亚比比巴极性的形成,这需要RHO /岩石的活动。我们提出了如何rho / rock调节血统规范的模型,并为未来的调查制定挑战,以加深我们对rho /岩石在预造版发展中的作用的理解。最后,由于某些药理学药物可能抑制Rho /岩石,我们讨论了对妇女生育保存的对人类预催化发展的潜在影响。

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