Evidence map›Paper›PMID 25615698›Full record

ArticlePloS one2015

Fibroblast growth factor receptor 2 (FGFR2) is required for corneal epithelial cell proliferation and differentiation during embryonic development.

Jinglin Zhang, Dinesh Upadhya, Lin Lu, Lixing W Reneker

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.1field-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

33 citing papers in PubMed, 53 citations in OpenAlex.

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  4. International journal of molecular sciences · 2026
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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

4 authors at 2 institutions in 2 countries.

Jinglin ZhangState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China.
Dinesh UpadhyaDept. of Ophthalmology, Mason Eye Institute, University of Missouri, Columbia, Missouri, United States of America.
Lin LuState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China.
Lixing W RenekerDept. of Ophthalmology, Mason Eye Institute, University of Missouri, Columbia, Missouri, United States of America.
Sun Yat-sen University · CNUniversity of Missouri · US

Funding

Ras &PI 3-Kinase Signaling in Lens DevelopmentR01EY013146 · NEI · UNIVERSITY OF MISSOURI-COLUMBIA · PI RENEKER, LIXING W · 2001 to 2012
$2.6M
PROTEIN AND HISTOLOGY MINICORE GRANT FOR VISION RESEARCHR24EY014795 · NEI · UNIVERSITY OF MISSOURI-COLUMBIA · PI SHARMA, KRISHNA K · 2003 to 2007
$855k
NEI NIH HHS EY13146NEI NIH HHS EY14795NEI NIH HHS R01 EY013146NEI NIH HHS R24 EY014795
6 · The paper itself

Abstract

Fibroblast growth factors (FGFs) play important roles in many aspects of embryonic development. During eye development, the lens and corneal epithelium are derived from the same surface ectodermal tissue. FGF receptor (FGFR)-signaling is essential for lens cell differentiation and survival, but its role in corneal development has not been fully investigated. In this study, we examined the corneal defects in Fgfr2 conditional knockout mice in which Cre expression is activated at lens induction stage by Pax6 P0 promoter. The cornea in LeCre, Fgfr2(loxP/loxP) mice (referred as Fgfr2(CKO)) was analyzed to assess changes in cell proliferation, differentiation and survival. We found that Fgfr2(CKO) cornea was much thinner in epithelial and stromal layer when compared to WT cornea. At embryonic day 12.5-13.5 (E12.5-13.5) shortly after the lens vesicle detaches from the overlying surface ectoderm, cell proliferation (judged by labeling indices of Ki-67, BrdU and phospho-histone H3) was significantly reduced in corneal epithelium in Fgfr2(CKO) mice. At later stage, cell differentiation markers for corneal epithelium and underlying stromal mesenchyme, keratin-12 and keratocan respectively, were not expressed in Fgfr2(CKO) cornea. Furthermore, Pax6, a transcription factor essential for eye development, was not present in the Fgfr2(CKO) mutant corneal epithelial at E16.5 but was expressed normally at E12.5, suggesting that FGFR2-signaling is required for maintaining Pax6 expression in this tissue. Interestingly, the role of FGFR2 in corneal epithelial development is independent of ERK1/2-signaling. In contrast to the lens, FGFR2 is not required for cell survival in cornea. This study demonstrates for the first time that FGFR2 plays an essential role in controlling cell proliferation and differentiation, and maintaining Pax6 levels in corneal epithelium via ERK-independent pathways during embryonic development.

Indexed as

Embryonic DevelopmentAnimalsCell DifferentiationCell ProliferationCorneaEctodermEpithelial CellsEye ProteinsGene Expression Regulation, DevelopmentalGene Knockout TechniquesHomeodomain ProteinsMAP Kinase Signaling SystemMicePaired Box Transcription FactorsPAX6 Transcription FactorReceptor, Fibroblast Growth Factor, Type 2Eye ProteinsFgfr2 protein, mouseHomeodomain ProteinsPaired Box Transcription FactorsPax6 protein, mousePAX6 Transcription FactorReceptor, Fibroblast Growth Factor, Type 2Repressor Proteins

Identifiers

PMID25615698
PMCPMC4304804
OpenAlexW1969776715

What OpenQuestion holds

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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.