Wnt5a is essential for intestinal elongation in mice.

Wnt5a is essential for intestinal elongation in mice.
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DOI:
10.1016/j.ydbio.2008.11.020
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发表时间:
2009-02-15
影响因子:
2.7
通讯作者:
Hebrok M
Hebrok M
中科院分区:
生物学3区
文献类型:
--
作者:
Cervantes S;Yamaguchi TP;Hebrok M

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哺乳动物小肠的形态发生需要原始肠道的广泛伸长和折叠成紧密卷曲的消化管。令人惊讶的是,人们对介导小肠形成形态方面的细胞和分子机制知之甚少。在这里,我们证明 Wnt5a 是 Wnt 分泌蛋白家族的成员,对于中肠区域小肠的发育和伸长至关重要。我们发现缺乏 Wnt5a 的小鼠的小肠显着缩短并复制,形成分叉的管腔而不是单一的管。此外,细胞增殖减少,有丝分裂后细胞重新嵌入伸长的肠管上皮被破坏。因此,我们的研究表明 Wnt5a 作为哺乳动物中肠形成和形态发生的关键调节因子。
Morphogenesis of the mammalian small intestine entails extensive elongation and folding of the primitive gut into a tightly coiled digestive tube. Surprisingly, little is known about the cellular and molecular mechanisms that mediate the morphological aspects of small intestine formation. Here, we demonstrate that Wnt5a, a member of the Wnt family of secreted proteins, is essential for the development and elongation of the small intestine from the midgut region. We found that the small intestine in mice lacking Wnt5a was dramatically shortened and duplicated, forming a bifurcated lumen instead of a single tube. In addition, cell proliferation was reduced and re-intercalation of post-mitotic cells into the elongating gut tube epithelium was disrupted. Thus, our study demonstrates that Wnt5a functions as a critical regulator of midgut formation and morphogenesis in mammals.
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影响因子: 5.3
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