Evidence map›Paper›PMID 8248144›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1993

Mechanistic aspects of genome-wide demethylation in the preimplantation mouse embryo.

T Kafri, X Gao, A Razin

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.3field-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

20 citing papers in PubMed, 138 citations in OpenAlex.

  1. Metabolic Plasticity in Embryogenesis Throughout the Lens of NADMethods in molecular biology (Clifton, N.J.) · 2026
    Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. DNA methylation: an epigenetic risk factor in preterm birth.Reproductive sciences (Thousand Oaks, Calif.) · 2012
    Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. The battle of the sexes after fertilization: behaviour of paternal and maternal chromosomes in the early mammalian embryo.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2001
    Review
  12. DNA methylation is a reversible biological signal.Proceedings of the National Academy of Sciences of the United States of America · 1999
    Article
  13. DNA demethylation.Proceedings of the National Academy of Sciences of the United States of America · 1999
    Review
  14. Article
  15. Article
  16. Regulation of X-chromosome inactivation in development in mice and humans.Microbiology and molecular biology reviews : MMBR · 1998
    Review
  17. Article
  18. Article
  19. Structure of the imprinted mouse Snrpn gene and establishment of its parental-specific methylation pattern.Proceedings of the National Academy of Sciences of the United States of America · 1997
    Article
  20. Article
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

3 authors at 1 institution in 1 country.

T KafriDepartment of Cellular Biochemistry, Hebrew University-Hadassah Medical School, Jerusalem, Israel.
X Gao
A Razin
Hebrew University of Jerusalem · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Gene-specific methylation patterns in mammals play a role in a variety of biological processes in the embryo and adult tissues. These patterns are established during embryo development by a process that involves genome-wide demethylation in the morula and de novo methylation in the pregastrula. To elucidate the mechanism of demethylation in the early mouse embryo, we have injected mouse zygotes with gene sequences that were methylated in vitro by Hpa II methylase and analyzed the methylation status of specific sites in blastocyst DNA. Because it had been propagated in Escherichia coli, the DNA used for these injections was also methylated at adenine residues in GATC sites. This allowed us to eliminate fully methylated, unintegrated DNA by Dpn I digestion and fully unmethylated, integrated DNA that underwent several rounds of replication by Mbo I digestion. The integrated, originally injected DNA strands were in a hemimethylated state and survived this treatment. The methylation status of Hpa II sites in these molecules was analyzed by Hpa II digestion of the genomic DNA isolated from blastocysts, followed by PCR amplification using appropriate primers. The results demonstrate that demethylation is achieved by an active mechanism and that specific sites in imprinted genes escape demethylation, maintaining a methylated state throughout preimplantation development.

Indexed as

AnimalsBase SequenceDNADNA PrimersEmbryonic DevelopmentFemaleGenesHybridization, GeneticImprinting, PsychologicalMaleMethylationMiceMice, Inbred BALB CMice, Inbred C57BLMolecular Sequence DataPregnancyDNADNA Primers

Identifiers

PMID8248144
PMCPMC47816
OpenAlexW2004818887

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.