Evidence map›Paper›PMID 22738725›Full record

ArticleCell2012

piRNAs can trigger a multigenerational epigenetic memory in the germline of C. elegans.

Alyson Ashe, Alexandra Sapetschnig, Eva-Maria Weick, Jacinth Mitchell, Marloes P Bagijn, Amy C Cording, Anna-Lisa Doebley, Leonard D Goldstein, Nicolas J Lehrbach, Jérémie Le Pen and 5 more

Abstract read
In one paragraph

Article in Cell, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 396 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
396citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

396 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. DivergenteLife · 2026
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Reproductive phasiRNAs are the piRNAs of plants.Trends in genetics : TIG · 2026
    Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

15 authors.

Alyson AsheWellcome Trust Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QN, UK.
Alexandra Sapetschnig
Eva-Maria Weick
Jacinth Mitchell
Marloes P Bagijn
Amy C Cording
Anna-Lisa Doebley
Leonard D Goldstein
Nicolas J Lehrbach
Jérémie Le Pen
Greta Pintacuda
Aisa Sakaguchi
Peter Sarkies
Shawn Ahmed
Eric A Miska

Funding

NRSA IN GENETICST32GM007092 · NIGMS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI SEKELSKY, JEFF J. · 1985 to 2019
$5.9M
Genetic Analysis of Germ Cell ImmortalityR01GM083048 · NIGMS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI AHMED, SHAWN CAMERON · 2007 to 2018
$2.5M
Cancer Research UK 11832NIGMS NIH HHS GM083048NIGMS NIH HHS R01 GM083048NIGMS NIH HHS T32 GM007092Wellcome Trust 092096
6 · The paper itself

Abstract

Transgenerational effects have wide-ranging implications for human health, biological adaptation, and evolution; however, their mechanisms and biology remain poorly understood. Here, we demonstrate that a germline nuclear small RNA/chromatin pathway can maintain stable inheritance for many generations when triggered by a piRNA-dependent foreign RNA response in C. elegans. Using forward genetic screens and candidate approaches, we find that a core set of nuclear RNAi and chromatin factors is required for multigenerational inheritance of environmental RNAi and piRNA silencing. These include a germline-specific nuclear Argonaute HRDE1/WAGO-9, a HP1 ortholog HPL-2, and two putative histone methyltransferases, SET-25 and SET-32. piRNAs can trigger highly stable long-term silencing lasting at least 20 generations. Once established, this long-term memory becomes independent of the piRNA trigger but remains dependent on the nuclear RNAi/chromatin pathway. Our data present a multigenerational epigenetic inheritance mechanism induced by piRNAs.

Indexed as

EpigenomicsRNA InterferenceAnimalsCaenorhabditis elegansCell NucleusFemaleGerm CellsMaleRNA, HelminthRNA, Small InterferingTransgenesRNA, HelminthRNA, Small Interfering

Identifiers

PMID22738725
PMCPMC3464430

What OpenQuestion holds

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Registered trials

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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.