Cre recombination-mediated cassette exchange for building versatile transgenic human embryonic stem cells lines.

Cre recombination-mediated cassette exchange for building versatile transgenic human embryonic stem cells lines.
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DOI:
10.1002/stem.38
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发表时间:
2009-05
期刊:
影响因子:
5.2
通讯作者:
Zhang, Su-Chun
Zhang, Su-Chun
中科院分区:
医学2区
文献类型:
--
作者:
Du, Zhong-Wei;Hu, Bao-Yang;Ayala, Melvin;Sauer, Brian;Zhang, Su-Chun

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为了避免转基因表达在人胚胎干细胞(hESC)中的沉默效应,我们采用Cre重组介导的盒交换策略靶向基因组中的沉默抗性位点。我们已经确定了新的基因座,在干细胞扩增和分化为代表三个胚层的细胞在体外和体内维持转基因表达。利用细胞可渗透的Cre蛋白转导方法,将已建立的主hESC系中的内置双loxP盒特异性地替换为含有相同loxP位点的靶向载体,从而成功产生具有组成型功能基因表达、诱导型转基因表达和谱系特异性报告基因表达的新hESC系。这种策略和主细胞系允许在普通实验室中快速生产转基因hESC系。
To circumvent the silencing effect of transgene expression in human embryonic stem cells (hESC), we employed the Cre recombination mediated cassette exchange strategy to target the silencing-resistant site in the genome. We have identified new loci that sustain transgene expression during stem cell expansion and differentiation to cells representing the three germ layers in vitro and in vivo. The built-in double loxP cassette in the established master hESC lines was specifically replaced by a targeting vector containing the same loxP sites, using the cell-permeable Cre protein transduction method, resulting in successful generation of new hESC lines with constitutive functional gene expression, inducible transgene expression and lineage-specific reporter gene expression. This strategy and the master cell lines allow for rapid production of transgenic hESC lines in ordinary laboratories.
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发表时间: 1996-08-20
影响因子: 11.1
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