Evidence map›Paper›PMID 26481219›Full record

ArticleBMC genomics2015

Characterizing Benzo[a]pyrene-induced lacZ mutation spectrum in transgenic mice using next-generation sequencing.

Marc A Beal, Rémi Gagné, Andrew Williams, Francesco Marchetti, Carole L Yauk

Open access · goldAbstract read
In one paragraph

Article in BMC genomics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.7field-weighted citation impact, top 9% 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

24 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. New homozygous gpt delta transgenic rat strain improves an efficiency of the in vivo mutagenicity assay.Genes and environment : the official journal of the Japanese Environmental Mutagen Society · 2021
    Article
  9. Article
  10. Direct quantification of in vivo mutagenesis and carcinogenesis using duplex sequencing.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Mutation Analysis in Cultured Cells of Transgenic Rodents.International journal of molecular sciences · 2018
    Article
  19. Mutagenic Replication of NChemical research in toxicology · 2017
    Article
  20. Evaluation of in vivo mutagenesis for assessing the health risk of air pollutants.Genes and environment : the official journal of the Japanese Environmental Mutagen Society · 2017
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Marc A BealCarleton University, Ottawa, ON, K1S 5B6, Canada. marc.beal@hc-sc.gc.ca.
Rémi GagnéEnvironmental Health Science and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, ON, K1A 0K9, Canada. remi.gagne@hc-sc.gc.ca.
Andrew WilliamsEnvironmental Health Science and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, ON, K1A 0K9, Canada. andrew.williams@hc-sc.gc.ca.
Francesco MarchettiEnvironmental Health Science and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, ON, K1A 0K9, Canada. francesco.marchetti@hc-sc.gc.ca.
Carole L YaukEnvironmental Health Science and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, ON, K1A 0K9, Canada. Carole.Yauk@hc-sc.gc.ca.
Health Canada · CACarleton University · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

backgroundThe transgenic rodent mutation reporter assay provides an efficient approach to identify mutagenic agents in vivo. A major advantage of this assay is that mutant reporter transgenes can be sequenced to provide information on the mode of action of a mutagen and to identify clonally expanded mutations. However, conventional DNA sequence analysis is laborious and expensive for long transgenes, such as lacZ (3096 bp), and is not normally implemented in routine screening.

methodsWe developed a high-throughput next-generation sequencing (NGS) approach to simultaneously sequence large numbers of barcoded mutant lacZ transgenes from different animals. We collected 3872 mutants derived from the bone marrow DNA of six Muta™Mouse males exposed to the well-established mutagen benzo[a]pyrene (BaP) and six solvent-exposed controls. Mutants within animal samples were pooled, barcoded, and then sequenced using NGS.

resultsWe identified 1652 mutant sequences from 1006 independent mutations that underwent clonal expansion. This deep sequencing analysis of mutation spectrum demonstrated that BaP causes primarily guanine transversions (e.g. G:C → T:A), which is highly consistent with previous studies employing Sanger sequencing. Furthermore, we identified novel mutational hotspots in the lacZ transgene that were previously uncharacterized by Sanger sequencing. Deep sequencing also allowed for an unprecedented ability to correct for clonal expansion events, improving the sensitivity of the mutation reporter assay by 50 %.

conclusionThese results demonstrate that the high-throughput nature and reduced costs offered by NGS provide a sensitive and fast approach for elucidating and comparing mutagenic mechanisms of various agents among tissues and enabling improved evaluation of genotoxins.

Indexed as

High-Throughput Nucleotide SequencingLac OperonAnimalsBenzo(a)pyreneMiceMice, TransgenicMutagenesisMutationSequence Analysis, DNABenzo(a)pyrene

Identifiers

PMID26481219
PMCPMC4617527
OpenAlexW2134429697

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.