100
views
0
recommends
+1 Recommend
0 collections
    8
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Data quality aware analysis of differential expression in RNA-seq with NOISeq R/Bioc package

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          As the use of RNA-seq has popularized, there is an increasing consciousness of the importance of experimental design, bias removal, accurate quantification and control of false positives for proper data analysis. We introduce the NOISeq R-package for quality control and analysis of count data. We show how the available diagnostic tools can be used to monitor quality issues, make pre-processing decisions and improve analysis. We demonstrate that the non-parametric NOISeqBIO efficiently controls false discoveries in experiments with biological replication and outperforms state-of-the-art methods. NOISeq is a comprehensive resource that meets current needs for robust data-aware analysis of RNA-seq differential expression.

          Related collections

          Most cited references34

          • Record: found
          • Abstract: found
          • Article: not found

          Ensembl 2012

          The Ensembl project (http://www.ensembl.org) provides genome resources for chordate genomes with a particular focus on human genome data as well as data for key model organisms such as mouse, rat and zebrafish. Five additional species were added in the last year including gibbon (Nomascus leucogenys) and Tasmanian devil (Sarcophilus harrisii) bringing the total number of supported species to 61 as of Ensembl release 64 (September 2011). Of these, 55 species appear on the main Ensembl website and six species are provided on the Ensembl preview site (Pre!Ensembl; http://pre.ensembl.org) with preliminary support. The past year has also seen improvements across the project.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: found
            Is Open Access

            Comprehensive evaluation of differential gene expression analysis methods for RNA-seq data

            A large number of computational methods have been developed for analyzing differential gene expression in RNA-seq data. We describe a comprehensive evaluation of common methods using the SEQC benchmark dataset and ENCODE data. We consider a number of key features, including normalization, accuracy of differential expression detection and differential expression analysis when one condition has no detectable expression. We find significant differences among the methods, but note that array-based methods adapted to RNA-seq data perform comparably to methods designed for RNA-seq. Our results demonstrate that increasing the number of replicate samples significantly improves detection power over increased sequencing depth.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              RNA-seq differential expression studies: more sequence or more replication?

              RNA-seq is replacing microarrays as the primary tool for gene expression studies. Many RNA-seq studies have used insufficient biological replicates, resulting in low statistical power and inefficient use of sequencing resources. We show the explicit trade-off between more biological replicates and deeper sequencing in increasing power to detect differentially expressed (DE) genes. In the human cell line MCF7, adding more sequencing depth after 10 M reads gives diminishing returns on power to detect DE genes, whereas adding biological replicates improves power significantly regardless of sequencing depth. We also propose a cost-effectiveness metric for guiding the design of large-scale RNA-seq DE studies. Our analysis showed that sequencing less reads and performing more biological replication is an effective strategy to increase power and accuracy in large-scale differential expression RNA-seq studies, and provided new insights into efficient experiment design of RNA-seq studies. The code used in this paper is provided on: http://home.uchicago.edu/∼jiezhou/replication/. The expression data is deposited in the Gene Expression Omnibus under the accession ID GSE51403.
                Bookmark

                Author and article information

                Journal
                Nucleic Acids Res
                Nucleic Acids Res
                nar
                nar
                Nucleic Acids Research
                Oxford University Press
                0305-1048
                1362-4962
                02 December 2015
                16 July 2015
                16 July 2015
                : 43
                : 21
                : e140
                Affiliations
                [1 ]Genomics of Gene Expression Lab, Centro de Investigación Príncipe Felipe, Eduardo Primo Yúfera 3, 46012, Valencia, Spain
                [2 ]Department of Applied Statistics, Operations Research and Quality, Universidad Politécnica de Valencia, Camí de Vera, 46022, Valencia, Spain
                [3 ]Department of Genetics, Universidad de Córdoba, Campus de Rabanales Edificio Gregor Mendel, 14071, Córdoba, Spain
                [4 ]Statistics and Operational Research Department, Universidad de Alicante, Carretera San Vicente del Raspeig s/n, 03690, Alicante, Spain
                [5 ]Microbiology and Cell Science Department, Institute for Food and Agricultural Sciences, University of Florida, Gainesville, FL 32603, USA
                Author notes
                [* ]To whom correspondence should be addressed. Tel: +34 963 289 680; Fax: +34 963 289 701; Email: aconesa@ 123456cipf.es
                Article
                10.1093/nar/gkv711
                4666377
                26184878
                d6a19b14-cb95-4289-927a-2ad02006f0e7
                © The Author(s) 2015. Published by Oxford University Press on behalf of Nucleic Acids Research.

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@ 123456oup.com

                History
                : 01 July 2015
                : 12 June 2015
                : 21 April 2015
                Page count
                Pages: 15
                Categories
                9
                Methods Online
                Custom metadata
                02 December 2015

                Genetics
                Genetics

                Comments

                Comment on this article