细胞生物学
果蝇属(亚属)
基因
基因沉默
转录因子
转基因
遗传筛选
作者
Jennifer L. Mummery-Widmer,Masakazu Yamazaki,Thomas Stoeger,Maria Novatchkova,Sheetal Bhalerao,Doris Chen,Georg Dietzl,Barry J. Dickson,Juergen A. Knoblich
出处
期刊:Nature
[Springer Nature]
日期:2009-04-23
卷期号:458 (7241): 987-992
被引量:263
摘要
Genome-wide RNA interference (RNAi) screens have identified near-complete sets of genes involved in cellular processes. However, this methodology has not yet been used to study complex developmental processes in a tissue-specific manner. Here we report the use of a library of Drosophila strains expressing inducible hairpin RNAi constructs to study the Notch signalling pathway during external sensory organ development. We assigned putative loss-of-function phenotypes to 21.2% of the protein-coding Drosophila genes. Using secondary assays, we identified 6 new genes involved in asymmetric cell division and 23 novel genes regulating the Notch signalling pathway. By integrating our phenotypic results with protein interaction data, we constructed a genome-wide, functionally validated interaction network governing Notch signalling and asymmetric cell division. We used clustering algorithms to identify nuclear import pathways and the COP9 signallosome as Notch regulators. Our results show that complex developmental processes can be analysed on a genome-wide level and provide a unique resource for functional annotation of the Drosophila genome.
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