Evidence map›Paper›PMID 9122186›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1997

Establishment of methylation-sensitive-representational difference analysis and isolation of hypo- and hypermethylated genomic fragments in mouse liver tumors.

T Ushijima, K Morimura, Y Hosoya, H Okonogi, M Tatematsu, T Sugimura, M Nagao

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed
3.8field-weighted citation impact, top 6% 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

53 citing papers in PubMed, 182 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Review
  12. Review
  13. DNA methylation in diploid inbred lines of potatoes and its possible role in the regulation of heterosis.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2010
    Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. DNA methylation patterns in lung carcinomas.Seminars in cancer biology · 2009
    Review
  19. The MIRA method for DNA methylation analysis.Methods in molecular biology (Clifton, N.J.) · 2009
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

T UshijimaCarcinogenesis Division, National Cancer Center Research Institute, Tokyo, Japan.
K Morimura
Y Hosoya
H Okonogi
M Tatematsu
T Sugimura
M Nagao
Aichi Cancer Center · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Methylation of CpG sites in the genome, which is generally conserved during cell replication, is considered to play important roles in cell differentiation and carcinogenesis. However, investigations on changes in methylation status have been limited to known genes. To make a genome-wide search for differentially methylated genes, we developed a methylation-sensitive-representational difference analysis (MS-RDA) method. The representation of the genome was prepared using the methylation-sensitive restriction enzyme HpaII, and the mixture ratio of tester and driver DNAs was optimized to detect differences in methylation status of a single copy per diploid mammalian genome. By performing comparative MS-RDA of one hepatocellular carcinoma and of background liver tissue of one mouse treated with a food carcinogen (2-amino-3,4-dimethylimidazo[4,5-f] quinoline), we were able to identify (i) extensive hypomethylation of long interspersed nuclear element repetitive sequences in a number of hepatocellular carcinomas, (ii) reduction of the gene dosage of their mitochondrial DNA, and (iii) a hypermethylated DNA fragment of unknown origin. Furthermore, by adding the clones obtained in the first MS-RDA to the driver DNA [MS-RDA with elimination of excessive clones (MS-RDA-WEEC)], nine DNA fragments that could not be detected at the first MS-RDA were isolated as differentially methylated DNA fragments. MS-RDA, combined with MS-RDA-WEEC, is thus a promising approach to identify DNA fragments differentially methylated in two DNA sources.

Indexed as

DNA MethylationAnimalsBase SequenceBlotting, SouthernCarcinogensDatabases, FactualDNA-Cytosine MethylasesDNA, NeoplasmDNA PrimersHumansLiver Neoplasms, ExperimentalMiceMice, Inbred StrainsQuinolinesStomach Neoplasms2-amino-3,4-dimethylimidazo(4,5-f)quinolineCarcinogensDNA-Cytosine MethylasesDNA modification methylase HpaIIDNA, NeoplasmDNA PrimersQuinolines

Identifiers

PMID9122186
PMCPMC20079
OpenAlexW2037920286

What OpenQuestion holds

Textmetadata
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.