Evidence map›Paper›PMID 19555646›Full record

ArticleNeuron2009

Graded levels of FGF protein span the midbrain and can instruct graded induction and repression of neural mapping labels.

Yao Chen, Moosa Mohammadi, John G Flanagan

Open access · bronzeAbstract read
In one paragraph

Article in Neuron, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

21 citing papers in PubMed, 34 citations in OpenAlex.

  1. Article
  2. Article
  3. Roles of Fibroblast Growth Factors in the Axon Guidance.International journal of molecular sciences · 2023
    Review
  4. Coreceptor functions of cell surface heparan sulfate proteoglycans.American journal of physiology. Cell physiology · 2022
    Review
  5. Review
  6. Article
  7. Mechanisms of FGF gradient formation during embryogenesis.Seminars in cell & developmental biology · 2016
    Review
  8. Review
  9. Engrailed homeoproteins in visual system development.Cellular and molecular life sciences : CMLS · 2015
    Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Fibroblast growth factor 8 organizes the neocortical area map and regulates sensory map topography.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2012
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Wiring the brain: the biology of neuronal guidance.Cold Spring Harbor perspectives in biology · 2010
    Review
  20. The development of developmental neuroscience.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2009
    Article
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

3 authors at 2 institutions in 1 country.

Yao ChenDepartment of Cell Biology, Harvard Medical School, 240 Longwood Avenue, Boston, MA 02115, USA.
Moosa Mohammadi
John G Flanagan
Harvard University · USNew York University · US

Funding

CELL-CELL SIGNALING IN VISUAL DEVELOPMENTR01EY011559 · NEI · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI FLANAGAN, JOHN G · 1996 to 2016
$6.9M
NEI NIH HHS R01 EY011559
6 · The paper itself

Abstract

Graded guidance labels are widely used in neural map formation, but it is not well understood which potential strategy leads to their graded expression. In midbrain tectal map development, FGFs can induce an entire midbrain, but their protein distribution is unclear, nor is it known whether they may act instructively to produce graded gene expression. Using a receptor-alkaline phosphatase fusion probe, we find a long-range posterior > anterior FGF protein gradient spanning the midbrain. Heparan sulfate proteoglycan (HSPG) is required for this gradient. To test whether graded FGF concentrations can instruct graded gene expression, a quantitative tectal explant assay was developed. Engrailed-2 and ephrin-As, normally in posterior > anterior tectal gradients, showed graded upregulation. Moreover, EphAs, normally in anterior > posterior countergradients, showed coordinately graded downregulation. These results provide a mechanism to establish graded mapping labels and more generally provide a developmental strategy to coordinately induce a structure and pattern its cell properties in gradients.

Indexed as

Age FactorsAnimalsBody PatterningCells, CulturedChick EmbryoEngrailed 2 ProteinFibroblast Growth FactorsGene Expression Regulation, DevelopmentalHomeodomain ProteinsMesencephalonNerve Tissue ProteinsNeuronsProtein BindingReceptors, Fibroblast Growth FactorTectum MesencephaliTissue Culture TechniquesEngrailed 2 ProteinFibroblast Growth FactorsHomeodomain ProteinsNerve Tissue ProteinsReceptors, Fibroblast Growth Factor

Identifiers

PMID19555646
PMCPMC2850284
OpenAlexW2168302749

What OpenQuestion holds

Textmetadata
LicenceTDM
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.