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

Abstract:

: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, and (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.

journal_name

Cell

journal_title

Cell

authors

Potter CJ,Tasic B,Russler EV,Liang L,Luo L

doi

10.1016/j.cell.2010.02.025

subject

Has Abstract

pub_date

2010-04-30 00:00:00

pages

536-48

issue

3

eissn

0092-8674

issn

1097-4172

pii

S0092-8674(10)00178-9

journal_volume

141

pub_type

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