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Genome-Wide RNAi Analysis of Growth and Viability in Drosophila Cells
Michael Boutros,1*Amy A. Kiger,1*Susan Armknecht,1,2Kim Kerr,1,2Marc Hild,3Britta Koch,3Stefan A. Haas,4Heidelberg Fly Array Consortium,3Renato Paro,3Norbert Perrimon1,2
A crucial aim upon completion of whole genome sequences is thefunctional analysis of all predicted genes. We have applieda high-throughput RNA-interference (RNAi) screen of 19,470 double-stranded(ds) RNAs in cultured cells to characterize the function ofnearly all (91%) predicted Drosophila genes in cell growth andviability. We found 438 dsRNAs that identified essential genes,among which 80% lacked mutant alleles. A quantitative assayof cell number was applied to identify genes of known and uncharacterizedfunctions. In particular, we demonstrate a role for the homologof a mammalian acute myeloid leukemia gene (AML1) in cell survival.Such a systematic screen for cell phenotypes, such as cell viability,can thus be effective in characterizing functionally relatedgenes on a genome-wide scale.
1 Department of Genetics, Harvard Medical School, Boston, MA 02115, USA. 2 Howard Hughes Medical Institute (HHMI), Harvard Medical School, Boston, MA 02115, USA. 3 Zentrum für Molekulare Biologie der Universität Heidelberg, D-69120 Heidelberg, Germany. The Heidelberg Fly Array Consortium consists of Marc Hild, Boris Beckmann, Stefan Haas, Britta Koch, Martin Vingron, Frank Sauer, Jörg Hoheisel, and Renato Paro. 4 Max-Planck Institute for Molecular Genetics, D-14195 Berlin, Germany.
* These authors contributed equally to this work.
Present address: German Cancer Research Center, D-69120 Heidelberg,Germany.
To whom correspondence should be addressed. E-mail: perrimon{at}rascal.med.harvard.edu
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