Design and analysis of ChIP-seq experiments for DNA-binding proteins

Nature Biotechnology volume 26, pages1351–1359(2008)Cite this article

Abstract

Recent progress in massively parallel sequencing platforms has enabled genome-wide characterization of DNA-associated proteins using the combination of chromatin immunoprecipitation and sequencing (ChIP-seq). Although a variety of methods exist for analysis of the established alternative ChIP microarray (ChIP-chip), few approaches have been described for processing ChIP-seq data. To fill this gap, we propose an analysis pipeline specifically designed to detect protein-binding positions with high accuracy. Using previously reported data sets for three transcription factors, we illustrate methods for improving tag alignment and correcting for background signals. We compare the sensitivity and spatial precision of three peak detection algorithms with published methods, demonstrating gains in spatial precision when an asymmetric distribution of tags on positive and negative strands is considered. We also analyze the relationship between the depth of sequencing and characteristics of the detected binding positions, and provide a method for estimating the sequencing depth necessary for a desired coverage of protein binding sites.

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Figure 1: Protein-binding detection from ChIP-seq data.
Figure 2: Selecting informative tag classes based on the change in strand cross-correlation magnitude.
Figure 3: Examples of anomalies in background tag distributions.
Figure 4: Binding position detection methods and their relative sensitivity.
Figure 5: Accuracy of determined binding positions.
Figure 6: Analysis of sequencing depth.

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Acknowledgements

We would like to thank Dustin Schones and Keji Zhao for providing raw data and detailed descriptions for the CTCF data set, and Ali Mortazavi and Barbara Wold for providing sequence tag data for NRSF binding. This work was supported by grants from the National Institutes of Health to P.J.P. (U01HG004258, R01GM082798, UL1RR024920).

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Affiliations

  1. Center for Biomedical Informatics, Harvard Medical School, 10 Shattuck St., Boston, 02115, Massachusetts, USA

    Peter V Kharchenko, Michael Y Tolstorukov & Peter J Park

  2. Harvard-Partners Center for Genetics and Genomics, Brigham and Women's Hospital, 77 Avenue Louis Pasteur, Boston, 02115, Massachusetts, USA

    Peter V Kharchenko, Michael Y Tolstorukov & Peter J Park

  3. Harvard-MIT Health Sciences and Technology Informatics Program at Children's Hospital, 300 Longwood Ave., Boston, 02115, Massachusetts, USA

    Peter V Kharchenko & Peter J Park

Authors
  1. Peter V Kharchenko
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  2. Michael Y Tolstorukov
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  3. Peter J Park
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Correspondence to Peter V Kharchenko or Peter J Park.

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Kharchenko, P., Tolstorukov, M. & Park, P. Design and analysis of ChIP-seq experiments for DNA-binding proteins. Nat Biotechnol 26, 1351–1359 (2008). https://doi.org/10.1038/nbt.1508

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