Extra-embryonic Wnt3 regulates the establishment of the primitive streak in mice.
Extra-embryonic Wnt3 regulates the establishment of the primitive streak in mice.
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DOI:
10.1016/j.ydbio.2015.04.008
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发表时间:
2015-07-01
影响因子:
2.7
通讯作者:
Rivera-Perez, Jaime A.
中科院分区:
文献类型:
--
作者:
Yoon, Yeonsoo;Huang, Tingting;Tortelote, Giovane G.;Wakamiya, Maki;Hadjantonakis, Anna-Katerina;Behringer, Richard R.;Rivera-Perez, Jaime A.
The establishment of the head to tail axis at early stages of development is a fundamental aspect of vertebrate embryogenesis. In mice, experimental embryology, genetics and expression studies have suggested that the visceral endoderm, an extra-embryonic tissue, plays an important role in anteroposterior axial development. Here we show that absence of Wnt3 in the posterior visceral endoderm leads to delayed formation of the primitive streak and that interplay between anterior and posterior visceral endoderm restricts the position of the primitive streak. Embryos lacking Wnt3 in the visceral endoderm, however, appear normal by E9.5. Our results suggest a model for axial development in which multiple signals are required for anteroposterior axial development in mammals.
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