A strategy to discover new organizers identifies a putative heart organizer.

A strategy to discover new organizers identifies a putative heart organizer.
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DOI:
10.1038/ncomms12656
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发表时间:
2016-08-25
影响因子:
16.6
通讯作者:
Stern, Claudio D.
Stern, Claudio D.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Anderson, Claire;Khan, Mohsin A. F.;Wong, Frances;Solovieva, Tatiana;Oliveira, Nidia M. M.;Baldock, Richard A.;Tickle, Cheryll;Burt, Dave W.;Stern, Claudio D.

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组织者是胚胎中既能诱导新的命运又能赋予其他区域模式的区域。到目前为止,令人惊讶的是,考虑到发育过程中产生的图案化组织类型的数量,很少有组织者被发现。这可能是因为他们的发现依赖于移植和消融实验。在这里,我们描述了一种新的方法,使用鸡胚,发现组织者基于一个共同的基因表达签名,并用它来揭示前肠门(AIP)内胚层作为一个假定的心脏组织者。我们发现,AIP可以诱导心脏的身份从非心脏中胚层,它可以通过指定心室和抑制心房区域的身份模式。我们还发现了一些相关的信号。该方法有望作为一种工具,发现其他新的组织者在发展过程中发挥作用。 组织者是胚胎中诱导细胞命运并将模式传递给相邻区域的区域。在这里,作者基于一个共同的基因签名寻找新的组织者,并表明前肠门内胚层诱导心脏的身份,指定心室和抑制心房的性格。
Organizers are regions of the embryo that can both induce new fates and impart pattern on other regions. So far, surprisingly few organizers have been discovered, considering the number of patterned tissue types generated during development. This may be because their discovery has relied on transplantation and ablation experiments. Here we describe a new approach, using chick embryos, to discover organizers based on a common gene expression signature, and use it to uncover the anterior intestinal portal (AIP) endoderm as a putative heart organizer. We show that the AIP can induce cardiac identity from non-cardiac mesoderm and that it can pattern this by specifying ventricular and suppressing atrial regional identity. We also uncover some of the signals responsible. The method holds promise as a tool to discover other novel organizers acting during development. Organizers are regions in the embryo that induce cell fate and impart pattern on neighbouring regions. Here, the authors search for new organizers based on a common gene signature, and show that the Anterior Intestinal Portal endoderm induces cardiac identity, specifies ventricle and inhibits atrial character.
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