A multicolor panel of TALE-KRAB based transcriptional repressor vectors enabling knockdown of multiple gene targets.

A multicolor panel of TALE-KRAB based transcriptional repressor vectors enabling knockdown of multiple gene targets.
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DOI:
10.1038/srep07338
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发表时间:
2014-12-05
期刊:
影响因子:
4.6
通讯作者:
Wu WS
Wu WS
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Zhang Z;Wu E;Qian Z;Wu WS

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多个基因靶标的稳定有效的敲低对于分子途径的剖析是非常需要的。由于转录激活因子样效应器 (TALE) 允许序列特异性 DNA 结合,因此它提供了一种新的遗传扰动技术,可实现基因特异性抑制。在这里,我们构建了一个多色慢病毒 TALE-Kruppel 相关盒 (KRAB) 表达载体平台,能够敲低多个基因靶标。该平台与 Golden Gate TALEN 和 TAL 效应器套件 2.0 完全兼容,这是一种广泛使用的高效 TALE 组装方法。我们发现,这种多色 TALE-KRAB 载体系统与骨髓移植相结合,可以快速敲除受体小鼠造血干细胞和祖细胞中的 c-kit 和 PU.1 基因。此外,我们的数据表明,该平台同时敲低相同原代细胞群中的 c-Kit 和 PU.1 基因。总之,我们的结果表明,这种多色 TALE-KRAB 载体平台是一种有前景的多功能工具,可用于敲除多个基因靶标,并且可以极大地促进分子途径的剖析。
Stable and efficient knockdown of multiple gene targets is highly desirable for dissection of molecular pathways. Because it allows sequence-specific DNA binding, transcription activator-like effector (TALE) offers a new genetic perturbation technique that allows for gene-specific repression. Here, we constructed a multicolor lentiviral TALE-Kruppel-associated box (KRAB) expression vector platform that enables knockdown of multiple gene targets. This platform is fully compatible with the Golden Gate TALEN and TAL Effector Kit 2.0, a widely used and efficient method for TALE assembly. We showed that this multicolor TALE-KRAB vector system when combined together with bone marrow transplantation could quickly knock down c-kit and PU.1 genes in hematopoietic stem and progenitor cells of recipient mice. Furthermore, our data demonstrated that this platform simultaneously knocked down both c-Kit and PU.1 genes in the same primary cell populations. Together, our results suggest that this multicolor TALE-KRAB vector platform is a promising and versatile tool for knockdown of multiple gene targets and could greatly facilitate dissection of molecular pathways.
使用工程 TALE 和 Cas9 转录因子直接激活人类和小鼠 Oct4 基因。
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