Expression of Gpr177, a Wnt trafficking regulator, in mouse embryogenesis.

Expression of Gpr177, a Wnt trafficking regulator, in mouse embryogenesis.
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DOI:
10.1002/dvdy.22336
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发表时间:
2010-07
影响因子:
2.5
通讯作者:
Hsu, Wei
Hsu, Wei
中科院分区:
生物学3区
文献类型:
--
作者:
Yu, Hsiao-Man Ivy;Jin, Ying;Fu, Jiang;Hsu, Wei

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编码一种多程跨膜蛋白的Wls/Evi/Srt在果蝇中已被确定为Wnt正确分选和分泌的调节因子。我们先前已证明Gpr177是小鼠中轴决定所必需的同源基因。Gpr177是Wnt的一个转录靶标,它被激活以在一个反馈调节回路中协助其亚细胞分布。因此我们提出,Wnt和Gpr177的相互调节对于依赖Wnt的发育和致病过程是必不可少的。在此我们研究了Gpr177在小鼠发育过程中的表达模式。在器官发生过程中,Gpr177在多种组织和细胞类型中表达。此外,Gpr177是一种糖蛋白,主要在信号产生细胞的高尔基体中积累。Gpr177的糖基化对于其在分泌途径中的正确运输是必需的。我们的研究结果表明,Gpr177介导的对Wnt的调节对于健康和疾病状态下的器官发生是至关重要的。
Wls/Evi/Srt encoding a multipass transmembrane protein has been identified as a regulator for proper sorting and secretion of Wnt in flies. We have previously demonstrated that Gpr177 is the mouse orthologue required for axis determination. Gpr177 is a transcriptional target of Wnt which is activated to assist its subcellular distribution in a feedback regulatory loop. We therefore proposed that reciprocal regulation of Wnt and Gpr177 is essential for the Wnt-dependent developmental and pathogenic processes. Here we examine the expression pattern of Gpr177 in mouse development. Gpr177 is expressed in a variety of tissues and cell types during organogenesis. Furthermore, Gpr177 is a glycoprotein primarily accumulating in the Golgi apparatus in signal-producing cells. The glycosylation of Gpr177 is necessary for proper transportation in the secretory pathway. Our findings suggest that the Gpr177-mediated regulation of Wnt is crucial for organogenesis in health and disease.
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