Identification of piRNA Binding Sites Reveals the Argonaute Regulatory Landscape of the C. elegans Germline.
Identification of piRNA Binding Sites Reveals the Argonaute Regulatory Landscape of the C. elegans Germline.
复制标题
DOI:
10.1016/j.cell.2018.02.002
复制
发表时间:
2018-02-22
期刊:
影响因子:
64.5
通讯作者:
Mello CC
中科院分区:
文献类型:
--
作者:
Shen EZ;Chen H;Ozturk AR;Tu S;Shirayama M;Tang W;Ding YH;Dai SY;Weng Z;Mello CC
piRNAs (Piwi-interacting small RNAs) engage Piwi Argonautes to silence transposons and promote fertility in animal germlines. Genetic and computational studies have suggested that C. elegans piRNAs tolerate mismatched pairing and in principle could target every transcript. Here we employ in vivo cross-linking to identify transcriptome-wide interactions between piRNAs and target RNAs. We show that piRNAs engage all germline mRNAs and that piRNA binding follows microRNA-like pairing rules. Targeting correlates better with binding energy than with piRNA abundance, suggesting that piRNA concentration does not limit targeting. In mRNAs silenced by piRNAs, secondary small RNAs accumulate at the center and ends of piRNA binding sites. In germline-expressed mRNAs, however, targeting by the CSR-1 Argonaute correlates with reduced piRNA binding density and suppression of piRNA-associated secondary small RNAs. Our findings reveal physiologically important and nuanced regulation of individual piRNA targets and provide evidence for a comprehensive post-transcriptional regulatory step in germline gene expression. Transcriptome-wide profiling of piRNA targeting rules provides new insights into the interplay between Argonaute pathways and their physiological roles in C. elegans
登录
查看更多内容
影响因子:
64.5
作者:
Ashe A;Sapetschnig A;Weick EM;Mitchell J;Bagijn MP;Cording AC;Doebley AL;Goldstein LD;Lehrbach NJ;Le Pen J;Pintacuda G;Sakaguchi A;Sarkies P;Ahmed S;Miska EA
通讯作者:
Miska EA
DOI:
10.1093/bioinformatics/btu638
发表时间:
2015-01-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Anders S;Pyl PT;Huber W
通讯作者:
Huber W
影响因子:
13.8
作者:
Czech B;Hannon GJ
通讯作者:
Hannon GJ
影响因子:
64.5
作者:
Helwak A;Kudla G;Dudnakova T;Tollervey D
通讯作者:
Tollervey D
影响因子:
12.3
作者:
Langmead B;Trapnell C;Pop M;Salzberg SL
通讯作者:
Salzberg SL