Genetic targeting of the endoderm with claudin-6CreER.

Genetic targeting of the endoderm with claudin-6CreER.
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DOI:
10.1002/dvdy.21437
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发表时间:
2008-02
影响因子:
2.5
通讯作者:
Melton, Douglas A.
Melton, Douglas A.
中科院分区:
生物学3区
文献类型:
--
作者:
Anderson, William J.;Zhou, Qiao;Alcalde, Victor;Kaneko, Osamu F.;Blank, Leah J.;Sherwood, Richard I.;Guseh, J. Sawalla;Rajagopal, Jayaraj;Melton, Douglas A.

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对β细胞个体发育的全面描述将指导从胚胎干细胞(ESCs)生成β细胞的努力。第一步需要了解确定的内胚层:负责其规格、增殖和图案化的基因和信号。这份报告描述了一个决定性内胚层的全球标记,Claudin-6(Cldn6)。我们报告了它在早期开发中的表达,并特别关注最终的内胚层衍生物。为了建立一个遗传系统,通过空间和时间控制来驱动基因在最终内胚层中的表达,我们用可诱导的Cre重组酶(Cre-ERT2)盒来靶向内源基因。Cldn6基因缺失的小鼠是存活和可生育的,没有明显的表型异常。我们还报告了表达Cldn6的胚胎细胞的命运的谱系分析,这与胰腺、肺和肝脏的发育有关。
A full description of the ontogeny of the β cell would guide efforts to generate β cells from embryonic stem cells (ESCs). The first step requires an understanding of definitive endoderm: the genes and signals responsible for its specification, proliferation, and patterning. This report describes a global marker of definitive endoderm, Claudin-6 (Cldn6). We report its expression in early development with particular attention to definitive endoderm derivatives. To create a genetic system to drive gene expression throughout the definitive endoderm with both spatial and temporal control, we target the endogenous locus with an inducible Cre recombinase (Cre-ERT2) cassette. Cldn6 null mice are viable and fertile with no obvious phenotypic abnormalities. We also report a lineage analysis of the fate of Cldn6-expressing embryonic cells, which is relevant to the development of the pancreas, lung, and liver.
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