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Two Novel EGFP Insertion Alleles Reveal Unique Aspects of Pax2 Function in Embryonic and Adult Kidneys

机译:两种新型EGFp插入或缺失揭示了胚胎和成年肾脏paX2功能的独特之处

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摘要

The Pax2 gene encodes a DNA binding protein with multiple functions in the developing intermediate mesoderm and urogenital tract. Loss of Pax2 in mice results in the complete absence of kidneys, ureters, and sex specific epithelial structures derived from the intermediate mesoderm in both males and females. In this report, we describe two new alleles of Pax2 created by inserting the Enhanced Green Fluorescent Protein coding region into the 5′ untranslated leader sequence. One allele is a hypomorph that generates less protein and exhibits structural defects in kidneys and ureters upon homozygosity. A second allele is a true null that can be used to image Pax2 expressing cells in a mutant background. Organ culture and embryo analyses point to a loss of epithelial cell polarity and increased mobility in cells that have deleted Pax2 function. These experiments provide new insight into the role of Pax2 protein levels in determining correct renal architecture and cell fate. These new Pax2 alleles are valuable genetic reagents for in vivo studies of urogenital development.
机译:PAX2基因编码DNA结合蛋白,具有多种功能在显影中间细胞和泌尿生殖道中。小鼠中PAX2的损失导致完全没有肾脏,输尿管和性别特异性上皮结构,源自雄性和女性中中间胚源。在本报告中,我们描述了通过将增强的绿色荧光蛋白编码区域插入5'未翻译的前导序列来创建的两种新的PAX2等位基因。一位等位基因是一种较少的蛋白质产生较少的蛋白质,并且在纯合子中表现出肾脏和输尿管的结构缺陷。第二个等位基因是一个真正的空空,其可用于在突变背景中的映像表达的PAX2表达细胞。器官培养物和胚胎分析到具有删除PAX2功能的细胞中的上皮细胞极性的丧失和增加的迁移率。这些实验为PAX2蛋白质水平的作用提供了新的洞察,在确定正确的肾架构和细胞命运时。这些新的PAX2等位基因是体内泌尿生殖力发育研究的有价值的遗传试剂。

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