Nitric Oxide regulates mouth development in amphioxus.

Nitric Oxide regulates mouth development in amphioxus.
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DOI:
10.1038/s41598-017-08157-w
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发表时间:
2017-08-16
期刊:
影响因子:
4.6
通讯作者:
D'Aniello S
D'Aniello S
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Annona G;Caccavale F;Pascual-Anaya J;Kuratani S;De Luca P;Palumbo A;D'Aniello S

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几十年来,动物口腔的发育一直令研究人员着迷,最近的一项研究提出了原造口术和子宫造口术反复进化的现代观点。在这里,我们扩展了关于脊索动物口腔形成的保守特征的知识,测试了一氧化氮(NO)是这一过程的潜在调节器的假设。在目前的工作中,我们首次证明了NO是头索动物口腔形成所必需的细胞信号分子,就像以前在脊椎动物中所显示的那样,这表明它在脊索动物中扮演着保守的祖先角色。在文昌鱼发育早期,NO的实验减少损害了嘴和鳃裂缝的形成,表明它是咽部形态发生的先决条件。我们的结果代表了理解非脊椎动物NO生理学的第一步,打开了新的进化视角,揭示了NO在进化过程中的祖先重要性和获得新的生物学角色。
The development of the mouth in animals has fascinated researchers for decades, and a recent study proposed the modern view of recurrent evolution of protostomy and deuterostomy. Here we expanded our knowledge about conserved traits of mouth formation in chordates, testing the hypothesis that nitric oxide (NO) is a potential regulator of this process. In the present work we show for the first time that NO is an essential cell signaling molecule for cephalochordate mouth formation, as previously shown for vertebrates, indicating its conserved ancestral role in chordates. The experimental decrease of NO during early amphioxus Branchiostoma lanceolatum development impaired the formation of the mouth and gill slits, demonstrating that it is a prerequisite in pharyngeal morphogenesis. Our results represent the first step in the understanding of NO physiology in non-vertebrate chordates, opening new evolutionary perspectives into the ancestral importance of NO homeostasis and acquisition of novel biological roles during evolution.
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