Evidence map›Paper›PMID 24903754›Full record

ArticleDevelopment (Cambridge, England)2014

PIWI homologs mediate histone H4 mRNA localization to planarian chromatoid bodies.

Labib Rouhana, Jennifer A Weiss, Ryan S King, Phillip A Newmark

Open access · greenAbstract read
In one paragraph

Article in Development (Cambridge, England), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

19 citing papers in PubMed, 42 citations in OpenAlex.

  1. Article
  2. Exploring the potential ofCurrent research in toxicology · 2025
    Article
  3. PIWI proteins and piRNAs: key regulators of stem cell biology.Frontiers in cell and developmental biology · 2025
    Review
  4. Article
  5. Review
  6. Isolation and Library Preparation of Planarian piRNAs.Methods in molecular biology (Clifton, N.J.) · 2023
    Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Article
  17. SmedGD 2.0: The Schmidtea mediterranea genome database.Genesis (New York, N.Y. : 2000) · 2015
    Article
  18. Review
  19. 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

4 authors at 3 institutions in 1 country.

Labib RouhanaDepartment of Biological Sciences, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435, USA Howard Hughes Medical Institute, Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, 601 S. Goodwin Ave., Urbana, IL 61801, USA labib.rouhana@wright.edu.
Jennifer A WeissHoward Hughes Medical Institute, Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, 601 S. Goodwin Ave., Urbana, IL 61801, USA.
Ryan S KingHoward Hughes Medical Institute, Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, 601 S. Goodwin Ave., Urbana, IL 61801, USA.
Phillip A NewmarkHoward Hughes Medical Institute, Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, 601 S. Goodwin Ave., Urbana, IL 61801, USA.
University of Illinois Urbana-Champaign · USHoward Hughes Medical Institute · USWright State University · US

Funding

Stem cell proliferation and differentiation in planariaR01HD043403 · NICHD · UNIVERSITY OF ILLINOIS URBANA-CHAMPAIGN · PI Phillip A Newmark · 2003 to 2026
$5.1M
NICHD NIH HHS HD043403NICHD NIH HHS R01 HD043403
6 · The paper itself

Abstract

The well-known regenerative abilities of planarian flatworms are attributed to a population of adult stem cells called neoblasts that proliferate and differentiate to produce all cell types. A characteristic feature of neoblasts is the presence of large cytoplasmic ribonucleoprotein granules named chromatoid bodies, the function of which has remained largely elusive. This study shows that histone mRNAs are a common component of chromatoid bodies. Our experiments also demonstrate that accumulation of histone mRNAs, which is typically restricted to the S phase of eukaryotic cells, is extended during the cell cycle of neoblasts. The planarian PIWI homologs SMEDWI-1 and SMEDWI-3 are required for proper localization of germinal histone H4 (gH4) mRNA to chromatoid bodies. The association between histone mRNA and chromatoid body components extends beyond gH4 mRNA, since transcripts of other core histone genes were also found in these structures. Additionally, piRNAs corresponding to loci of every core histone type have been identified. Altogether, this work provides evidence that links PIWI proteins and chromatoid bodies to histone mRNA regulation in planarian stem cells. The molecular similarities between neoblasts and undifferentiated cells of other organisms raise the possibility that PIWI proteins might also regulate histone mRNAs in stem cells and germ cells of other metazoans.

Indexed as

AnimalsArgonaute ProteinsBlotting, NorthernBromodeoxyuridineCytoplasmic GranulesFluorescent Antibody TechniqueHistonesIn Situ Hybridization, FluorescenceOligonucleotidesPlanariansReverse Transcriptase Polymerase Chain ReactionRNA, Double-StrandedRNA InterferenceRNA, MessengerArgonaute ProteinsBromodeoxyuridineHistonesOligonucleotidesRNA, Double-StrandedRNA, MessengerChromatoid bodiesHistone SLBPNeoblastsPIWIRNP granulesStem cells

Identifiers

PMID24903754
PMCPMC4067957
OpenAlexW2103828183

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.