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
中科院分区:
文献类型:
--
作者:
Potter CJ;Tasic B;Russler EV;Liang L;Luo L
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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