Evidence map›Paper›PMID 15713841›Full record

ArticleGenes & development2005

Ephrin-A2 reverse signaling negatively regulates neural progenitor proliferation and neurogenesis.

Johan Holmberg, Annika Armulik, Kirsten-André Senti, Karin Edoff, Kirsty Spalding, Stefan Momma, Rob Cassidy, John G Flanagan, Jonas Frisén

Open access · diamondAbstract read
In one paragraph

Article in Genes & development, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 90 papers.

0numbers the graph read from it
0cells of the map it votes in
90citing papers in PubMed
–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

90 citing papers in PubMed, 206 citations in OpenAlex.

  1. The Eph-ephrin system in neuropsychiatric and neurodevelopmental disorders.Journal of psychiatry & neuroscience : JPN · 2026
    Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Drug Conjugates for Targeting Eph Receptors in Glioblastoma.Pharmaceuticals (Basel, Switzerland) · 2020
    Article
  14. Article
  15. Capillary-resident EphA7Stem cells translational medicine · 2020
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

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

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

9 authors at 2 institutions in 2 countries.

Johan HolmbergDepartment of Cell and Molecular Biology, Medical Nobel Institute, Karolinska Institute, SE-171 77 Stockholm, Sweden.
Annika Armulik
Kirsten-André Senti
Karin Edoff
Kirsty Spalding
Stefan Momma
Rob Cassidy
John G Flanagan
Jonas Frisén
Harvard University · USKarolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The number of cells in an organ is regulated by mitogens and trophic factors that impinge on intrinsic determinants of proliferation and apoptosis. We here report the identification of an additional mechanism to control cell number in the brain: EphA7 induces ephrin-A2 reverse signaling, which negatively regulates neural progenitor cell proliferation. Cells in the neural stem cell niche in the adult brain proliferate more and have a shorter cell cycle in mice lacking ephrin-A2. The increased progenitor proliferation is accompanied by a higher number of cells in the olfactory bulb. Disrupting the interaction between ephrin-A2 and EphA7 in the adult brain of wild-type mice disinhibits proliferation and results in increased neurogenesis. The identification of ephrin-A2 and EphA7 as negative regulators of progenitor cell proliferation reveals a novel mechanism to control cell numbers in the brain.

Indexed as

Cell ProliferationSignal TransductionAnimalsBrainEphrin-A2ImmunohistochemistryMaleMiceMice, Inbred C57BLNervous SystemRecombinant ProteinsStem CellsEphrin-A2Recombinant Proteins

Identifiers

PMID15713841
PMCPMC548947
OpenAlexW2101027374

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.