PMID- 20434990 OWN - NLM STAT- MEDLINE DCOM- 20100507 LR - 20220530 IS - 1097-4172 (Electronic) IS - 0092-8674 (Print) IS - 0092-8674 (Linking) VI - 141 IP - 3 DP - 2010 Apr 30 TI - The Q system: a repressible binary system for transgene expression, lineage tracing, and mosaic analysis. PG - 536-48 LID - 10.1016/j.cell.2010.02.025 [doi] AB - 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. CI - 2010 Elsevier Inc. All rights reserved. FAU - Potter, Christopher J AU - Potter CJ AD - Howard Hughes Medical Institute, Stanford University, Stanford, CA 94305, USA. FAU - Tasic, Bosiljka AU - Tasic B FAU - Russler, Emilie V AU - Russler EV FAU - Liang, Liang AU - Liang L FAU - Luo, Liqun AU - Luo L LA - eng SI - GENBANK/HM068612 SI - GENBANK/HM068613 SI - GENBANK/HM068614 GR - R37 NS041044/NS/NINDS NIH HHS/United States GR - R01 DC005982/DC/NIDCD NIH HHS/United States GR - R01 NS050835/NS/NINDS NIH HHS/United States GR - R01 DC005982-09/DC/NIDCD NIH HHS/United States GR - HHMI/Howard Hughes Medical Institute/United States GR - R37 NS041044-11/NS/NINDS NIH HHS/United States GR - R01 NS050835-07/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Cell JT - Cell JID - 0413066 SB - IM MH - Animals MH - Cell Lineage MH - *Cytological Techniques MH - Drosophila/cytology MH - Female MH - *Genetic Techniques MH - HeLa Cells MH - Humans MH - Male MH - Molecular Sequence Data MH - Neurospora crassa/genetics MH - Plasmids/chemistry/genetics MH - Transgenes PMC - PMC2883883 MID - NIHMS202722 EDAT- 2010/05/04 06:00 MHDA- 2010/05/08 06:00 PMCR- 2010/10/30 CRDT- 2010/05/04 06:00 PHST- 2009/08/04 00:00 [received] PHST- 2010/01/07 00:00 [revised] PHST- 2010/02/16 00:00 [accepted] PHST- 2010/05/04 06:00 [entrez] PHST- 2010/05/04 06:00 [pubmed] PHST- 2010/05/08 06:00 [medline] PHST- 2010/10/30 00:00 [pmc-release] AID - S0092-8674(10)00178-9 [pii] AID - 10.1016/j.cell.2010.02.025 [doi] PST - ppublish SO - Cell. 2010 Apr 30;141(3):536-48. doi: 10.1016/j.cell.2010.02.025.