Plug-and-play genetic access to drosophila cell types using exchangeable exon cassettes.

Plug-and-play genetic access to drosophila cell types using exchangeable exon cassettes.
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DOI:
10.1016/j.celrep.2015.01.059
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发表时间:
2015-03-03
期刊:
影响因子:
8.8
通讯作者:
White BH
White BH
中科院分区:
生物学1区
文献类型:
--
作者:
Diao F;Ironfield H;Luan H;Diao F;Shropshire WC;Ewer J;Marr E;Potter CJ;Landgraf M;White BH

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遗传编码效应子是探测活体动物细胞功能的重要工具,但需要改进将其表达导向特定细胞类型的方法。在这里,我们介绍了一种简单,通用的方法,实现细胞类型特异性表达的转基因,利用未开发的潜力“编码内含子”(即编码外显子之间的内含子)。我们的方法使用内含子插入的“即插即用”盒(称为“特洛伊外显子”)将转基因的表达与感兴趣的细胞中表达的天然基因的表达偶联,所述盒携带剪接受体位点,随后是T2 A肽和效应转基因的编码序列。我们使用含有合适的MiMIC转座子和能够表达一系列常用转录因子的特洛伊外显子的细胞系在果蝇中证明了这种方法的有效性。我们还介绍了一个可交换的,MiMIC样的特洛伊外显子结构,可以有针对性的编码内含子使用Crispr/Cas系统。
Genetically encoded effectors are important tools for probing cellular function in living animals, but improved methods for directing their expression to specific cell types are required. Here we introduce a simple, versatile method for achieving cell type-specific expression of transgenes that leverages the untapped potential of “coding introns” (i.e. introns between coding exons). Our method couples the expression of a transgene to that of a native gene expressed in the cells of interest using intronically inserted “plug-and-play” cassettes (called “Trojan exons”) that carry a splice acceptor site followed by the coding sequences of T2A peptide and an effector transgene. We demonstrate the efficacy of this approach in Drosophila using lines containing suitable MiMIC transposons and a palette of Trojan exons capable of expressing a range of commonly used transcription factors. We also introduce an exchangeable, MiMIC-like Trojan exon construct that can be targeted to coding introns using the Crispr/Cas system.
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