期刊
METHODS
卷 65, 期 3, 页码 263-273出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ymeth.2013.10.015
关键词
CLASH; RNA-RNA interactions; Bioinformatics; High-throughput sequencing
资金
- BBSRC Grant [BB/J001279/1]
- Wellcome Trust [097383, 077248]
- MRC
- Biotechnology and Biological Sciences Research Council [BB/J001279/1] Funding Source: researchfish
- Medical Research Council [MC_UU_12018/23, 1232674] Funding Source: researchfish
- BBSRC [BB/J001279/1] Funding Source: UKRI
- MRC [MC_UU_12018/23] Funding Source: UKRI
Associations between proteins and RNA-RNA duplexes are important in post-transcriptional regulation of gene expression. The CLASH (Cross-linking, Ligation and Sequencing of Hybrids) technique captures RNA-RNA interactions by physically joining two RNA molecules associated with a protein complex into a single chimeric RNA molecule. These events are relatively rare and considerable effort is needed to detect a small number of chimeric sequences amongst millions of non-chimeric cDNA reads resulting from a CLASH experiment. We present the hyb bioinformatics pipeline, which we developed to analyse high-throughput cDNA sequencing data from CLASH experiments. Although primarily designed for use with AGO CLASH data, hyb can also be used for the detection and annotation of chimeric reads in other high-throughput sequencing datasets. We examined the sensitivity and specificity of chimera detection in a test dataset using the BLAST, BLAST+, BLAT, pBLAT and Bowtie2 read alignment programs. We obtained the most reliable results in the shortest time using a combination of preprocessing with Flexbar and subsequent read-mapping using Bowtie2. The hyb software is distributed under the GNU GPL (General Public License) and can be downloaded from https://github.com/gkudla/hyb. (c) 2013 The Authors. Published by Elsevier Inc. All rights reserved.
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