The DOI matches its Crossref record; 68 of the 68 references it cites were found in a registry or an index.
Comparison of whole-genome bisulfite sequencing library preparation strategies identifies sources of biases affecting DNA methylation data
Open accessAbstract
BACKGROUND: Whole-genome bisulfite sequencing (WGBS) is becoming an increasingly accessible technique, used widely for both fundamental and disease-oriented research. Library preparation methods benefit from a variety of available kits, polymerases and bisulfite conversion protocols. Although some steps in the procedure, such as PCR amplification, are known to introduce biases, a systematic evaluation of biases in WGBS strategies is missing. RESULTS: We perform a comparative analysis of several commonly used pre- and post-bisulfite WGBS library preparation protocols for their performance and quality of sequencing outputs. Our results show that bisulfite conversion per se is the main trigger of pronounced sequencing biases, and PCR amplification builds on these underlying artefacts. The majority of standard library preparation methods yield a significantly biased sequence output and overestimate global methylation. Importantly, both absolute and relative methylation levels at specific genomic regions vary substantially between methods, with clear implications for DNA methylation studies. CONCLUSIONS: We show that amplification-free library preparation is the least biased approach for WGBS. In protocols with amplification, the choice of bisulfite conversion protocol or polymerase can significantly minimize artefacts. To aid with the quality assessment of existing WGBS datasets, we have integrated a bias diagnostic tool in the Bismark package and offer several approaches for consideration during the preparation and analysis of WGBS datasets.
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Cites
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Biomarkers in Psychiatry: Concept, Definition, Types and Relevance to the Clinical Reality
García-Gutiérrez, M. S., Navarrete, F., Sala, F., Gasparyan, A., Austrich-Olivares, A., & Manzanares, J. (2020) · Frontiers in Psychiatry · doi:10.3389/fpsyt.2020.00432 · Cited by 331
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Metadata
- Authors
- Olova, N., Krueger, F., Andrews, S., Oxley, D., Berrens, R. V., Branco, M. R., & Reik, W.
- Venue
- Genome Biology
- Published
- 2018-03-15
- Volume
- 19
- Issue
- 1
- Pages
- 33-33
- ISSN
- 1465-6906 (ISSN-L)
- 1474-760X
- OpenAlex
- W2950199861
- Cited by
- 313
- References
- 68
- FWCI
- 9.42
- Type
- journal article
- Language
- en
- Open access
- gold
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- Olova, N., Krueger, F., Andrews, S., Oxley, D., Berrens, R. V., Branco, M. R., & Reik, W. (2018). Comparison of whole-genome bisulfite sequencing library preparation strategies identifies sources of biases affecting DNA methylation data. Genome Biology. https://doi.org/10.1186/s13059-018-1408-2
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