CASSys: an integrated software-system for the interactive analysis of ChIP-seq data

TY - JOUR

T1 - CASSys: an integrated software-system for the interactive analysis of ChIP-seq data

AU - Alawi, Malik

AU - Kurtz, Stefan

AU - Beckstette, Michael

PY - 2011

Y1 - 2011

N2 - The mapping of DNA-protein interactions is crucial for a full understanding of transcriptional regulation. Chromatin-immunoprecipitation followed by massively parallel sequencing (ChIP-seq) has become the standard technique for analyzing these interactions on a genome-wide scale. We have developed a software system called CASSys (ChIP-seq data Analysis Software System) spanning all steps of ChIP-seq data analysis. It supersedes the laborious application of several single command line tools. CASSys provides functionality ranging from quality assessment and -control of short reads, over the mapping of reads against a reference genome (readmapping) and the detection of enriched regions (peakdetection) to various follow-up analyses. The latter are accessible via a state-of-the-art web interface and can be performed interactively by the user. The follow-up analyses allow for flexible user defined association of putative interaction sites with genes, visualization of their genomic context with an integrated genome browser, the detection of putative binding motifs, the identification of over-represented Gene Ontology-terms, pathway analysis and the visualization of interaction networks. The system is client-server based, accessible via a web browser and does not require any software installation on the client side. To demonstrate CASSys's functionality we used the system for the complete data analysis of a publicly available Chip-seq study that investigated the role of the transcription factor estrogen receptor-α in breast cancer cells.

AB - The mapping of DNA-protein interactions is crucial for a full understanding of transcriptional regulation. Chromatin-immunoprecipitation followed by massively parallel sequencing (ChIP-seq) has become the standard technique for analyzing these interactions on a genome-wide scale. We have developed a software system called CASSys (ChIP-seq data Analysis Software System) spanning all steps of ChIP-seq data analysis. It supersedes the laborious application of several single command line tools. CASSys provides functionality ranging from quality assessment and -control of short reads, over the mapping of reads against a reference genome (readmapping) and the detection of enriched regions (peakdetection) to various follow-up analyses. The latter are accessible via a state-of-the-art web interface and can be performed interactively by the user. The follow-up analyses allow for flexible user defined association of putative interaction sites with genes, visualization of their genomic context with an integrated genome browser, the detection of putative binding motifs, the identification of over-represented Gene Ontology-terms, pathway analysis and the visualization of interaction networks. The system is client-server based, accessible via a web browser and does not require any software installation on the client side. To demonstrate CASSys's functionality we used the system for the complete data analysis of a publicly available Chip-seq study that investigated the role of the transcription factor estrogen receptor-α in breast cancer cells.

KW - Animals

KW - Binding Sites

KW - Chromatin Immunoprecipitation

KW - DNA-Binding Proteins

KW - Estrogen Receptor alpha

KW - Genomics

KW - High-Throughput Nucleotide Sequencing

KW - Humans

KW - Oligonucleotide Array Sequence Analysis

KW - Software

KW - Transcription Factors

U2 - 10.2390/biecoll-jib-2011-155

DO - 10.2390/biecoll-jib-2011-155

M3 - SCORING: Journal article

C2 - 21690655

VL - 8

SP - 155

JO - J INTEGR BIOINFORMAT

JF - J INTEGR BIOINFORMAT

SN - 1613-4516

IS - 2

ER -