当前位置： SCI文献检索 > Parasites & Vectors期刊下所有文献 > High-throughput sequencing of RNAs isolated by cross-linking immunoprecipitation (HITS-CLIP) reveals Argonaute-associated microRNAs and targets in Schistosoma japonicum.

High-throughput sequencing of RNAs isolated by cross-linking immunoprecipitation (HITS-CLIP) reveals Argonaute-associated microRNAs and targets in Schistosoma japonicum.

Abstract：

BACKGROUND:Schistosomiasis, caused by schistosomes, is one of the most prevalent and serious parasitic diseases in tropical and subtropical countries. This pathogen has a complex life cycle and harbors a unique repertoire of genes expressed at different life-stages. Understanding the gene regulation of schistosomes will contribute to identification of novel drug targets and vaccine candidates. Some conserved and novel microRNAs (miRNAs) have been identified in schistosomes as key transcriptional and post-transcriptional regulators in the past few years; however, little is known about their specific targets. METHODS:High-throughput sequencing of RNAs isolated by cross-linking immunoprecipitation (HITS-CLIP) was used to covalently crosslink native Argonaute protein-RNA complexes in Schistosoma japonicum. An antibody against S.japonicum Argonaute proteins, was generated and used for immunoprecipitation of the crosslinked SjAgo-RNA complex from soluble adult worm extract. Small RNAs, including miRNAs and their target mRNAs associated with the native SjAgo in adult parasites, were enriched and extracted for library construction. RESULTS:High-throughput sequencing produced a total of ~7.4 million high-quality reads, of which approximately 45.07 % were composed of 769 miRNAs and 35.54 % were composed of 11,854 mRNAs target sites. Further bioinformatics analysis identified 43 conserved known miRNAs and 256 novel miRNAs in the SjAgo-associated small RNA population. An average of approximately 15 target sites were predicted for each miRNA. Moreover, a positive rate of 50 % has been achieved in a small-scale verification test of the putative target sites of miRNA1. CONCLUSION:In this study, we isolated and identified small RNAs including miRNAs and their targets associated with the S. japonicum Argonaute proteins, by the HITS-CLIP method combined with bioinformatics and biologic experimental analysis. These data reveal a genome-wide miRNA-mRNA interaction map in S. japonicum in vivo, which will help us understand the complex gene regulatory network in this pathogen and thereby facilitate the development of novel drug approaches against schistosomiasis.

journal_name

Parasit Vectors

journal_title

Parasites & vectors

authors

Zhao J,Luo R,Xu X,Zou Y,Zhang Q,Pan W

doi

10.1186/s13071-015-1203-9

subject

Has Abstract

pub_date

2015-11-14 00:00:00

pages

589

issn

1756-3305

pii

10.1186/s13071-015-1203-9

journal_volume

pub_type

杂志文章

在线工具

High-throughput sequencing of RNAs isolated by cross-linking immunoprecipitation (HITS-CLIP) reveals Argonaute-associated microRNAs and targets in Schistosoma japonicum.