Evidence map›Paper›PMID 18984622›Full record

ArticleNucleic acids research2008

Errors in the bisulfite conversion of DNA: modulating inappropriate- and failed-conversion frequencies.

Diane P Genereux, Winslow C Johnson, Alice F Burden, Reinhard Stöger, Charles D Laird

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 78 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 22% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

78 citing papers in PubMed, 1 synthesis or guideline pooled it, 157 citations in OpenAlex.

  1. Pooled it
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  18. Computational Methods for Single-cell DNA Methylome Analysis.Genomics, proteomics & bioinformatics · 2023
    Review
  19. Article
  20. Review

18 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Diane P GenereuxDepartment of Biology, University of Washington, Seattle, WA 98195, USA. genereux@u.washington.edu
Winslow C Johnson
Alice F Burden
Reinhard Stöger
Charles D Laird
University of Washington · US

Funding

Restoring FMRP Phenotypes Frpm Temporal Regional and Splice- Isoforms VarationsP30HD002274 · NICHD · UNIVERSITY OF WASHINGTON · PI GURALNICK, MICHAEL J · 1985 to 2013
$33.6M
INTERDISCIPLINARY TRAINING IN GENOMIC SCIENCEST32HG000035 · NHGRI · UNIVERSITY OF WASHINGTON · PI Bruce Colston Trapnell · 1995 to 2026
$24.2M
Shotgun Hairpin-Bisulfite PCR Reveals Genome Methylation and Sequence VariationR01GM077464 · NIGMS · UNIVERSITY OF WASHINGTON · PI LAIRD, CHARLES D · 2006 to 2008
$773k
NHGRI NIH HHS T32 HG00035NICHD NIH HHS HD002274NIGMS NIH HHS GM077464
6 · The paper itself

Abstract

Bisulfite treatment can be used to ascertain the methylation states of individual cytosines in DNA. Ideally, bisulfite treatment deaminates unmethylated cytosines to uracils, and leaves 5-methylcytosines unchanged. Two types of bisulfite-conversion error occur: inappropriate conversion of 5-methylcytosine to thymine, and failure to convert unmethylated cytosine to uracil. Conventional bisulfite treatment requires hours of exposure to low-molarity, low-temperature bisulfite ('LowMT') and, sometimes, thermal denaturation. An alternate, high-molarity, high-temperature ('HighMT') protocol has been reported to accelerate conversion and to reduce inappropriate conversion. We used molecular encoding to obtain validated, individual-molecule data on failed- and inappropriate-conversion frequencies for LowMT and HighMT treatments of both single-stranded and hairpin-linked oligonucleotides. After accounting for bisulfite-independent error, we found that: (i) inappropriate-conversion events accrue predominantly on molecules exposed to bisulfite after they have attained complete or near-complete conversion; (ii) the HighMT treatment is preferable because it yields greater homogeneity among sites and among molecules in conversion rates, and thus yields more reliable data; (iii) different durations of bisulfite treatment will yield data appropriate to address different experimental questions; and (iv) conversion errors can be used to assess the validity of methylation data collected without the benefit of molecular encoding.

Indexed as

DNA MethylationSequence Analysis, DNA5-MethylcytosineCytosineDNADNA, Single-StrandedNucleic Acid ConformationOligonucleotidesPolymerase Chain ReactionSulfitesTemperature5-MethylcytosineCytosineDNADNA, Single-Strandedhydrogen sulfiteOligonucleotidesSulfites

Identifiers

PMID18984622
PMCPMC2602783
OpenAlexW1980943135

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.