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Functional Genomic Analysis of RNA Interference in C. elegans
John K. Kim,1,2*
Harrison W. Gabel,1,2*
Ravi S. Kamath,1,2*
Muneesh Tewari,2,3,4,5
Amy Pasquinelli,1,2
Jean-François Rual,2,3
Scott Kennedy,1,2
Michael Dybbs,1,2
Nicolas Bertin,2,3,5
Joshua M. Kaplan,1,2
Marc Vidal,2,3,5
Gary Ruvkun1,2||
Abstract:
RNA interference (RNAi) of target genes is triggered by double-strandedRNAs (dsRNAs) processed by conserved nucleases and accessoryfactors. To identify the genetic components required for RNAi,we performed a genome-wide screen using an engineered RNAi sensorstrain of Caenorhabditis elegans. The RNAi screen identified90 genes. These included Piwi/PAZ proteins, DEAH helicases,RNA binding/processing factors, chromatin-associated factors,DNA recombination proteins, nuclear import/export factors, and11 known components of the RNAi machinery. We demonstrate thatsome of these genes are also required for germline and somatictransgene silencing. Moreover, the physical interactions amongthese potential RNAi factors suggest links to other RNA-dependentgene regulatory pathways.
1 Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA. 2 Department of Genetics, Harvard Medical School, Boston, MA 02114, USA. 3 Center for Cancer Systems Biology, Dana-Farber Cancer Institute, Boston, MA 02115, USA. 4 Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA. 5 Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.
* These authors contributed equally to this work.
Present address: Department of Medicine, Brigham and Women'sHospital, Boston, MA 02115, USA.
Present address: Molecular Biology Section, Division of Biology,University of California, San Diego, La Jolla, CA 920930349,USA.
Present address: Department of Pharmacology, University of Wisconsin,Madison, WI 53706, USA.
|| To whom correspondence should be addressed. E-mail: ruvkun{at}molbio.mgh.harvard.edu
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