The Q system: a repressible binary system for transgene expression, lineage tracing, and mosaic analysis.

The Q system: a repressible binary system for transgene expression, lineage tracing, and mosaic analysis.
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DOI:
10.1016/j.cell.2010.02.025
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发表时间:
2010-04-30
期刊:
影响因子:
64.5
通讯作者:
Luo L
Luo L
中科院分区:
生物学1区
文献类型:
--
作者:
Potter CJ;Tasic B;Russler EV;Liang L;Luo L

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我们描述了一种新的基于脉孢菌QA基因簇调控基因的可阻遏双元表达系统。这个‘Q系统’为转基因在果蝇和哺乳动物细胞中的表达提供了吸引人的特征:在没有转录激活剂QF的情况下,低基础表达,高QF诱导表达,以及其抑制物QS抑制QF的表达。此外,喂食奎尼酸可以缓解QS抑制。Q系统提供了许多应用,包括:1)与GAL4系统相交的逻辑门,用于操纵转基因表达模式;2)不依赖于GAL4的MARCM分析;3)耦合MARCM分析,以独立可视化和遗传操作来自任何细胞分裂的兄弟姐妹。我们展示了Q系统在确定神经元谱系的细胞分裂模式和细胞生长和增殖中的基因功能,以及在解剖负责嗅觉吸引的神经元方面的应用。Q系统可以扩展到果蝇的其他用途,以及任何有利于转基因的生物。
We describe a new repressible binary expression system based on the regulatory genes from the Neurospora qa gene cluster. This ‘Q system’ offers attractive features for transgene expression in Drosophila and mammalian cells: low basal expression in the absence of the transcriptional activator QF, high QF-induced expression, and QF repression by its repressor QS. Additionally, feeding flies quinic acid can relieve QS repression. The Q system offers many applications including: 1) intersectional ‘logic gates’ with the GAL4 system for manipulating transgene expression patterns, 2) GAL4-independent MARCM analysis, 3) coupled MARCM analysis to independently visualize and genetically manipulate siblings from any cell division. We demonstrate the utility of the Q system in determining cell division patterns of a neuronal lineage and gene function in cell growth and proliferation, and in dissecting neurons responsible for olfactory attraction. The Q system can be expanded to other uses in Drosophila, and to any organism conducive to transgenesis.
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