Evidence map›Paper›PMID 31015579›Full record

ArticleScientific reports2019

SMAD3 directly regulates cell cycle genes to maintain arrest in granulosa cells of mouse primordial follicles.

Sofia Granados-Aparici, Kate Hardy, Stephen Franks, Isam B Sharum, Sarah L Waite, Mark A Fenwick

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

24 citing papers in PubMed, 51 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Building a resilient ovarian reserve: Early soma-oocyte interactions.Current topics in developmental biology · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. 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

6 authors at 4 institutions in 3 countries.

Sofia Granados-ApariciAcademic Unit of Reproductive and Developmental Medicine, Department of Oncology and Metabolism, University of Sheffield, Sheffield, S10 2SF, United Kingdom.
Kate HardyInstitute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, United Kingdom.
Stephen FranksInstitute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, United Kingdom.
Isam B SharumAcademic Unit of Reproductive and Developmental Medicine, Department of Oncology and Metabolism, University of Sheffield, Sheffield, S10 2SF, United Kingdom.
Sarah L WaiteAcademic Unit of Reproductive and Developmental Medicine, Department of Oncology and Metabolism, University of Sheffield, Sheffield, S10 2SF, United Kingdom.
Mark A FenwickAcademic Unit of Reproductive and Developmental Medicine, Department of Oncology and Metabolism, University of Sheffield, Sheffield, S10 2SF, United Kingdom. m.a.fenwick@sheffield.ac.uk.ORCID http://orcid.org/0000-0001-8856-2048
Hammersmith Hospital · GBUniversity of Sheffield · GBMcGill University Health Centre · CAUniversity of Mosul · IQ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Primordial follicles, consisting of granulosa cell (GC)-enveloped oocytes are maintained in a state of developmental arrest until activated to grow. The mechanism that operates to maintain this arrested state in GCs is currently unknown. Here, we show the TGFβ-activated transcription factor SMAD3 is expressed in primordial GC nuclei alongside the cell cycle proteins, cyclin D2 (CCND2) and P27. Using neonatal C57/Bl6 mouse ovaries densely populated with primordial follicles, CCND2 protein co-localised and was detected in complex with P27 by immunofluorescence and co-immunoprecipitation, respectively. In the same tissue, SMAD3 co-precipitated with DNA sequences upstream of Ccnd2 and Myc transcription start sites implicating both as direct SMAD3 targets. In older ovaries follicle growth was associated with nuclear exclusion of SMAD3 and reduced P27 and CCND2 in GCs, alongside elevated Myc expression. Brief (2 H) exposure of neonatal ovaries to TGFβ1 (10 ng/ml) in vitro led to immediate dissociation of SMAD3 from the Ccnd2 and Myc promoters. This coincided with elevated Myc and phospho-S6, an indicator of mTOR signalling, followed by a small increase in mean primordial GC number after 48 H. These findings highlight a concentration-dependent role for TGFβ signalling in the maintenance and activation of primordial follicles, through SMAD-dependent and independent signalling pathways, respectively.

Indexed as

AnimalsAnimals, NewbornCell Cycle ProteinsCyclin D2Cyclin-Dependent Kinase Inhibitor p27FemaleGene Expression RegulationGranulosa CellsMice, Inbred C57BLOocytesOvarian FollicleOvaryProto-Oncogene Proteins c-mycSmad3 ProteinTransforming Growth Factor beta1Cell Cycle ProteinsCyclin D2Cyclin-Dependent Kinase Inhibitor p27Myc protein, mouseProto-Oncogene Proteins c-mycSmad3 ProteinTransforming Growth Factor beta1

Identifiers

PMID31015579
PMCPMC6478827
OpenAlexW2942404571

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.