Generation and characterization of a tamoxifen-inducible Eomes(CreER) mouse line.

Generation and characterization of a tamoxifen-inducible Eomes(CreER) mouse line.
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DOI:
10.1002/dvg.22417
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发表时间:
2013-10
期刊:
影响因子:
1.5
通讯作者:
Arnold, Sebastian J.
Arnold, Sebastian J.
中科院分区:
生物学4区
文献类型:
--
作者:
Pimeisl, Inga-Marie;Tanriver, Yakup;Daza, Ray A.;Vauti, Franz;Hevner, Robert F.;Arnold, Hans-Henning;Arnold, Sebastian J.

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以组织特异性方式表达可诱导形式的Cre重组酶的转基因小鼠系是用于研究成人发育和各种过程的强大遗传工具。T-box转录因子eomesodermin(Eomes)在从早期胚胎阶段到成年期的不同干细胞和祖细胞池的维持和分化中起关键作用。这些包括滋养层干细胞、初级胚层生成过程中的上胚层细胞、胚胎和成人皮质神经发生中的神经源性中间祖细胞以及成熟的自然杀伤细胞和T细胞。在这里,我们报告的EomesCreER靶向等位基因的生成和分析,通过将他莫昔芬激活的CreER重组酶(CreER)的控制下的Eomes基因组位点。我们证明,CreER表达重演内源性Eomes转录不同的祖细胞群体。他莫昔芬给药特异性标记Eomes表达细胞及其后代,如通过将EomesCreER动物与不同的Cre诱导型报告菌株杂交所证明的。总之,这种新的EomesCreER等位基因可用作优雅的遗传工具,其允许跟踪Eomes阳性细胞的命运并以时间特异性方式对其进行遗传操纵。
Transgenic mouse lines expressing inducible forms of Cre-recombinase in a tissue-specific manner are powerful genetic tools for studying aspects of development and various processes in the adult. The T-box transcription factor eomesodermin (Eomes) plays critical roles for maintenance and differentiation of different pools of stem and progenitor cells from early embryonic stages to adulthood. These include trophoblast stem cells, epiblast cells during the generation of the primary germ layers, neurogenic intermediate progenitor cells in embryonic and adult cortical neurogenesis, and maturing natural killer and T cells. Here, we report on the generation and analysis of an EomesCreER-targeted allele by placing the tamoxifen-activatable Cre-recombinase (CreER) under the control of the Eomes genomic locus. We demonstrate that CreER expression recapitulates endogenous Eomes transcription within different progenitor cell populations. Tamoxifen administration specifically labels Eomes-expressing cells and their progeny as demonstrated by crossing EomesCreER animals to different Cre-inducible reporter strains. In summary, this novel EomesCreER allele can be used as elegant genetic tool that allows to follow the fate of Eomes-positive cells and to genetically manipulate them in a temporal specific manner.
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