Evidence map›Paper›PMID 19474150›Full record

ArticleDevelopment (Cambridge, England)2009

KGF and EGF signalling block hair follicle induction and promote interfollicular epidermal fate in developing mouse skin.

Gavin D Richardson, Hisham Bazzi, Katherine A Fantauzzo, James M Waters, Heather Crawford, Phil Hynd, Angela M Christiano, Colin A B Jahoda

Open access · bronzeAbstract read
In one paragraph

Article in Development (Cambridge, England), 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
4.9field-weighted citation impact, top 5% 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

51 citing papers in PubMed, 103 citations in OpenAlex.

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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

8 authors at 2 institutions in 2 countries.

Gavin D RichardsonSchool of Biological and Biomedical Sciences, University of Durham, Durham DH1 3LE, UK.
Hisham Bazzi
Katherine A Fantauzzo
James M Waters
Heather Crawford
Phil Hynd
Angela M Christiano
Colin A B Jahoda
Durham University · GBColumbia University · US

Funding

Biotechnology and Biological Sciences Research Council G18988
6 · The paper itself

Abstract

A key initial event in hair follicle morphogenesis is the localised thickening of the skin epithelium to form a placode, partitioning future hair follicle epithelium from interfollicular epidermis. Although many developmental signalling pathways are implicated in follicle morphogenesis, the role of epidermal growth factor (EGF) and keratinocyte growth factor (KGF, also known as FGF7) receptors are not defined. EGF receptor (EGFR) ligands have previously been shown to inhibit developing hair follicles; however, the underlying mechanisms have not been characterised. Here we show that receptors for EGF and KGF undergo marked downregulation in hair follicle placodes from multiple body sites, whereas the expression of endogenous ligands persist throughout hair follicle initiation. Using embryonic skin organ culture, we show that when skin from the sites of primary pelage and whisker follicle development is exposed to increased levels of two ectopic EGFR ligands (HBEGF and amphiregulin) and the FGFR2(IIIb) receptor ligand KGF, follicle formation is inhibited in a time- and dose-dependent manner. We then used downstream molecular markers and microarray profiling to provide evidence that, in response to KGF and EGF signalling, epidermal differentiation is promoted at the expense of hair follicle fate. We propose that hair follicle initiation in placodes requires downregulation of the two pathways in question, both of which are crucial for the ongoing development of the interfollicular epidermis. We have also uncovered a previously unrecognised role for KGF signalling in the formation of hair follicles in the mouse.

Indexed as

EpidermisSkinAmphiregulinAnimalsbeta CateninCadherinsCell DifferentiationEGF Family of ProteinsEnzyme InhibitorsEpidermal CellsEpidermal Growth FactorErbB ReceptorsFibroblast Growth Factor 10Fibroblast Growth Factor 7GlycoproteinsHair FollicleAmphiregulinAreg protein, mousebeta CateninCadherinsEGF Family of ProteinsEnzyme InhibitorsEpidermal Growth FactorErbB ReceptorsFgf10 protein, mouseFibroblast Growth Factor 10Fibroblast Growth Factor 7GlycoproteinsHbegf protein, mouseHedgehog ProteinsHeparin-binding EGF-like Growth FactorHyaluronan ReceptorsIntercellular Signaling Peptides and Proteinskeratinocyte growth factor receptorOncogene ProteinsQuinazolinesReceptor, Fibroblast Growth Factor, Type 2RTKI cpdShh protein, mouseSyndecan-1Trans-ActivatorsTyrphostinsWnt ProteinsZinc Finger Protein GLI1

Identifiers

PMID19474150
PMCPMC2729337
OpenAlexW2071313744

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.