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Construction of mouse 129/Ola BAC library for targeting experiments using E14 embryonic stem cells

机译:小鼠129 / Ola BAC文库的构建,用于使用E14胚胎干细胞进行靶向实验

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摘要

Gene targeting is a powerful method of specifically modifying genes of interest. It has been most consistently successful in the 129 mouse strain, because the embryonic stem (ES) cells of 129 mice are relatively easy to culture. In gene-targeting experiments, the use of ES cell-derived genomic clones as a source of homology arms is desirable, because the genetic variation among mouse strains results in a reduced frequency of homologous recombination. In this study, we generated an arrayed mouse 129/Ola BAC library derived from E14.1 ES cells, one of the frequently used ES cell lines. More than 135,000 BAC clones with a mean insert size of 110 kb were isolated. This library is estimated to represent a 5.5-fold mouse genome coverage. The BAC clones can be screened within 2 days by PCR. Considering that all 8 loci so far examined are contained in this BAC library, we believe it will be a useful resource for gene targeting studies using E14 ES cells as well as for genome analysis.
机译:基因靶向是特异性修饰目的基因的有效方法。由于129小鼠的胚胎干(ES)细胞相对易于培养,因此在129小鼠品系中获得了最一致的成功。在基因靶向实验中,使用ES细胞衍生的基因组克隆作为同源臂的来源是理想的,因为小鼠品系之间的遗传变异导致同源重组的频率降低。在这项研究中,我们生成了从E14.1 ES细胞(一种常用的ES细胞系)衍生的阵列小鼠129 / Ola BAC库。分离出超过135,000个BAC克隆,平均插入片段大小为110 kb。该文库估计代表着5.5倍的小鼠基因组覆盖率。 BAC克隆可在2天内通过PCR筛选。考虑到目前为止检查的所有8个基因座都包含在该BAC库中,我们认为这将是使用E14 ES细胞进行基因靶向研究以及进行基因组分析的有用资源。

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