RRC ID 22022
著者 Muerdter F, Guzzardo PM, Gillis J, Luo Y, Yu Y, Chen C, Fekete R, Hannon GJ.
タイトル A genome-wide RNAi screen draws a genetic framework for transposon control and primary piRNA biogenesis in Drosophila.
ジャーナル Mol Cell
Abstract A large fraction of our genome consists of mobile genetic elements. Governing transposons in germ cells is critically important, and failure to do so compromises genome integrity, leading to sterility. In animals, the piRNA pathway is the key to transposon constraint, yet the precise molecular details of how piRNAs are formed and how the pathway represses mobile elements remain poorly understood. In an effort to identify general requirements for transposon control and components of the piRNA pathway, we carried out a genome-wide RNAi screen in Drosophila ovarian somatic sheet cells. We identified and validated 87 genes necessary for transposon silencing. Among these were several piRNA biogenesis factors. We also found CG3893 (asterix) to be essential for transposon silencing, most likely by contributing to the effector step of transcriptional repression. Asterix loss leads to decreases in H3K9me3 marks on certain transposons but has no effect on piRNA levels.
巻・号 50(5)
ページ 736-48
公開日 2013-6-6
DOI 10.1016/j.molcel.2013.04.006
PII S1097-2765(13)00287-6
PMID 23665228
PMC PMC3724422
MeSH Animals DNA Transposable Elements* Drosophila Proteins / genetics Drosophila Proteins / metabolism* Drosophila melanogaster / genetics* Drosophila melanogaster / metabolism Female Gene Knockdown Techniques Gene Silencing Genome, Insect Ovary / physiology RNA Interference RNA, Small Interfering / genetics RNA, Small Interfering / metabolism* Reproducibility of Results SUMO-1 Protein / genetics SUMO-1 Protein / metabolism
IF 15.584
引用数 88
WOS 分野 BIOCHEMISTRY & MOLECULAR BIOLOGY CELL BIOLOGY
リソース情報
ショウジョウバエ DGRC#204406