BMP signalling is required for extra-embryonic ectoderm development during pre-to-post-implantation transition of the mouse embryo.

BMP signalling is required for extra-embryonic ectoderm development during pre-to-post-implantation transition of the mouse embryo.
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在小鼠胚胎从着床前到着床后的转变过程中,骨形态发生蛋白(BMP)信号对于胚外外胚层的发育是必需的。

DOI:
10.1016/j.ydbio.2020.11.005
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发表时间:
2021-03
影响因子:
2.7
通讯作者:
Zernicka-Goetz M
Zernicka-Goetz M
中科院分区:
生物学3区
文献类型:
--
作者:
Sozen B;Demir N;Zernicka-Goetz M

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在植入时,小鼠胚胎经历了一个关键的转变,这需要精确的时空控制的信号通路所必需的形态和发育进程。这种信号通路在这一转变过程中所起的作用在很大程度上尚未被探索,这是由于胚胎在植入过程中被子宫组织吞噬时无法进入。遗传学研究表明,BMP突变胚胎在原肠胚形成前后死亡。在这里,我们的目的是剖析BMP在植入前到植入后过渡期间的作用,通过使用允许胚胎在体外发育超过植入阶段的协议,并使用干细胞来模拟植入后的组织结构。通过评估BMP的经典和非经典机制,我们发现,经典BMP活性的丧失损害了胚外外胚层的发育。我们的分析表明,BMP信号维持胚胎/胚胎外组织中的干细胞群体在植入前至植入后的发展。这些结果可能提供深入了解BMP信号在控制早期胚胎发生中所起的作用。
At implantation, the mouse embryo undergoes a critical transformation which requires the precise spatiotemporal control of signalling pathways necessary for morphogenesis and developmental progression. The role played by such signalling pathways during this transition are largely unexplored, due to the inaccessibility of the embryo during the implantation when it becomes engulfed by uterine tissues. Genetic studies demonstrate that mutant embryos for BMPs die around gastrulation. Here we have aimed to dissect the role of BMPs during pre-to post-implantation transition by using a protocol permitting the development of the embryo beyond implantation stages in vitro and using stem cells to mimic post-implantation tissue organisation. By assessing both the canonical and non-canonical mechanisms of BMP, we show that the loss of canonical BMP activity compromises the extra-embryonic ectoderm development. Our analyses demonstrate that BMP signalling maintains stem cell populations within both embryonic/extra-embryonic tissues during pre-to post-implantation development. These results may provide insight into the role played by BMP signalling in controlling early embryogenesis.
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