Hox and Wnt pattern the primary body axis of an anthozoan cnidarian before gastrulation.

Hox and Wnt pattern the primary body axis of an anthozoan cnidarian before gastrulation.
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DOI:
10.1038/s41467-018-04184-x
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发表时间:
2018-05-22
影响因子:
16.6
通讯作者:
Martindale MQ
Martindale MQ
中科院分区:
综合性期刊1区
文献类型:
--
作者:
DuBuc TQ;Stephenson TB;Rock AQ;Martindale MQ

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Hox基因转录因子是两侧对称动物中沿着前后轴位置一致性的重要调节因子。刺胞动物(例如,海葵、珊瑚和水螅)是双体动物的姐妹群,具有与前、中/后类Hox基因相关的基因。在这里,我们报告了一个以前未被识别的域的Hox表达的星海葵,Nematostella vectensis,开始在早期囊胚阶段。我们探讨了两个相反的Hox基因(NvAx 6/NvAx 1)在早期发育过程中的囊胚的每一侧上表达的关系。功能扰动表明,NvAx 6和NvAx 1不仅调节各自的表达结构域,而且还与Wnt基因相互作用以形成整个口-背口轴。这些发现表明轴形成过程中Hox/Wnt模式之间的古老联系,并表明口-背口域可能在珊瑚虫刺胞动物的囊胚形成过程中建立。Hox基因调节前后轴的形成,但它们在刺胞动物中的作用尚不清楚。在这里,作者破坏了星状海葵Nematostella vectensis中的Hox基因NvAx 1和NvAx 6,显示了在口腔-口轴模式中的拮抗剂功能以及与Wnt信号传导的联系。
Hox gene transcription factors are important regulators of positional identity along the anterior–posterior axis in bilaterian animals. Cnidarians (e.g., sea anemones, corals, and hydroids) are the sister group to the Bilateria and possess genes related to both anterior and central/posterior class Hox genes. Here we report a previously unrecognized domain of Hox expression in the starlet sea anemone, Nematostella vectensis, beginning at early blastula stages. We explore the relationship of two opposing Hox genes (NvAx6/NvAx1) expressed on each side of the blastula during early development. Functional perturbation reveals that NvAx6 and NvAx1 not only regulate their respective expression domains, but also interact with Wnt genes to pattern the entire oral–aboral axis. These findings suggest an ancient link between Hox/Wnt patterning during axis formation and indicate that oral–aboral domains are likely established during blastula formation in anthozoan cnidarians. Hox genes regulate anterior–posterior axis formation but their role in cnidarians is unclear. Here, the authors disrupt Hox genes NvAx1 and NvAx6 in the starlet sea anemone, Nematostella vectensis, showing antagonist function in patterning the oral–aboral axis and a link to Wnt signaling.
DOI: 10.1101/gr.1717804
发表时间: 2004-01-01
期刊: GENOME RESEARCH
影响因子: 7
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期刊: PLOS ONE
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影响因子: 7.7
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发表时间: 2001-04-01
期刊: AMERICAN ZOOLOGIST
影响因子: --
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通讯作者: McLaughlin, RL
DOI: 10.1038/35025063
发表时间: 2000-09-14
期刊: NATURE
影响因子: 64.8
作者:
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