Evidence map›Paper›PMID 22529396›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2012

Mechanisms of activation of the paternally expressed genes by the Prader-Willi imprinting center in the Prader-Willi/Angelman syndromes domains.

Shiri Rabinovitz, Yotam Kaufman, Guy Ludwig, Aharon Razin, Ruth Shemer

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
4.3field-weighted citation impact, top 5% 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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.

  1. Recommendations for the investigation of animal models of Prader-Willi syndrome.Mammalian genome : official journal of the International Mammalian Genome Society · 2013
    Guideline
  2. Review
  3. Article
  4. Imprinted Long Non-Coding RNAs in Mammalian Development and Disease.International journal of molecular sciences · 2023
    Review
  5. Article
  6. Review
  7. Article
  8. Conservation of Imprinting and Methylation ofAnimals : an open access journal from MDPI · 2021
    Article
  9. Review
  10. Review
  11. Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Genomic imprinting, action, and interaction of maternal and fetal genomes.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Review
  19. Epigenetic changes in the developing brain: Effects on behavior.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
  20. 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 1 institution in 1 country.

Shiri RabinovitzDepartment of Developmental Biology and Cancer Research, Institute of Medical Research Israel-Canada, Hebrew University Hadassah Medical School, Jerusalem 91120, Israel.
Yotam Kaufman
Guy Ludwig
Aharon Razin
Ruth Shemer
Hebrew University of Jerusalem · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Prader-Willi syndrome/Angelman syndrome (PWS/AS) imprinted domain is regulated by a bipartite imprinting control center (IC) composed of a sequence around the SNRPN promoter (PWS-IC) and a 880-bp sequence located 35 kb upstream (AS-IC). The AS-IC imprint is established during gametogenesis and confers repression upon PWS-IC on the maternal allele. Mutation at PWS-IC on the paternal allele leads to gene silencing across the entire PWS/AS domain. This silencing implies that PWS-IC functions on the paternal allele as a bidirectional activator. Here we examine the mechanism by which PWS-IC activates the paternally expressed genes (PEGs) using transgenes that include the PWS-IC sequence in the presence or absence of AS-IC and NDN, an upstream PEG, as an experimental model. We demonstrate that PWS-IC is in fact an activator of NDN. This activation requires an unmethylated PWS-IC in the gametes and during early embryogenesis. PWS-IC is dispensable later in development. Interestingly, a similar activation of a nonimprinted gene (APOA1) was observed, implying that PWS-IC is a universal activator. To decipher the mechanism by which PWS-IC confers activation of remote genes, we performed methylated DNA immunoprecipitation (MeDIP) array analysis on lymphoblast cell lines that revealed dispersed, rather than continued differential methylation. However, chromatin conformation capture (3c) experiments revealed a physical interaction between PWS-IC and the PEGs, suggesting that activation of PEGs may require their proximity to PWS-IC.

Indexed as

DNA MethylationGenomic ImprintingAngelman SyndromeAnimalsApolipoprotein A-IBase SequenceBinding SitesBlotting, SouthernBrainFathersFemaleFibroblastsGene ExpressionHumansMaleMiceAPOA1 protein, humanApolipoprotein A-InecdinNerve Tissue ProteinsNuclear ProteinssnRNP Core Proteins

Identifiers

PMID22529396
PMCPMC3358894
OpenAlexW2031149283

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.