Evidence map›Paper›PMID 22232078›Full record

ArticleStem cells (Dayton, Ohio)2012

Transcription factor TCF4 maintains the properties of human corneal epithelial stem cells.

Rong Lu, Yangluowa Qu, Jian Ge, Lili Zhang, Zhitao Su, Stephen C Pflugfelder, De-Quan Li

Open access · bronzeAbstract read
In one paragraph

Article in Stem cells (Dayton, Ohio), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
4.2field-weighted citation impact, top 6% 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

36 citing papers in PubMed, 67 citations in OpenAlex.

  1. Article
  2. Review
  3. Regulation of Limbal Epithelial Stem Cells: Importance of the Niche.International journal of molecular sciences · 2021
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Sostdc1 is expressed in all major compartments of developing and adult mammalian eyes.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2019
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Limbal stem cells: identity, developmental origin, and therapeutic potential.Wiley interdisciplinary reviews. Developmental biology · 2018
    Review
  18. Article
  19. Article
  20. 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

7 authors at 4 institutions in 2 countries.

Rong LuZhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-Sen University, Guangzhou, People's Republic of China.
Yangluowa Qu
Jian Ge
Lili Zhang
Zhitao Su
Stephen C Pflugfelder
De-Quan Li
Baylor College of Medicine · USAffiliated Hospital of Qingdao University · CNOcular Surface Center · USSun Yat-sen University · CN

Funding

PATHOGENESIS OF CONJUNCTIVAL SQUAMOUS METAPLASIAR01EY011915 · NEI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI PFLUGFELDER, STEPHEN C · 1997 to 2023
$8.0M
Cornea Epithelial Stem Cell Isolation for BioengineeringR03EY014553 · NEI · BAYLOR COLLEGE OF MEDICINE · PI LI, DE-QUAN · 2003 to 2005
$452k
NEI NIH HHS EY11915NEI NIH HHS R01 EY011915NEI NIH HHS R03 EY014553
6 · The paper itself

Abstract

TCF4, a key transcription factor of Wnt signaling system, has been recently found to be essential for maintaining stem cells. However, its signaling pathway is not well elucidated. This study was to explore the functional roles and signaling pathway of TCF4 in maintaining adult stem cell properties using human corneal epithelial stem cells as a model. With immunofluorescent staining and real-time polymerase chain reaction, we observed that TCF4 was exclusively expressed in the basal layer of human limbal epithelium where corneal epithelial stem cells reside. TCF4 was found to be well colocalized with ABCG2 and p63, two recognized epithelial stem/progenitor cell markers. Using in vitro culture models of primary human corneal epithelial cells, we revealed that TCF4 mRNA and protein were upregulated by cells in exponential growth stage, and RNA interference by small interfering RNA-TCF4 (10-50 nM) transfection blocked TCF4 signaling and suppressed cell proliferation as measured by WST-1 assay. TCF4 silence was found to be accompanied by downregulated proliferation-associated factors p63 and survivin, as well as upregulated cyclin-dependent kinase inhibitor 1C (p57). By creating a wound healing model in vitro, we identified upregulation and activation of β-catenin/TCF4 with their protein translocation from cytoplasm to nuclei, as evaluated by reverse transcription-quantitative real-time polymerase chain reaction, immunostaining, and Western blotting. Upregulated p63/survivin and downregulated p57 were further identified to be TCF4 downstream molecules that promote cell migration and proliferation in wound healing process. These findings demonstrate that transcription factor TCF4 plays an important role in determining or maintaining the phenotype and functional properties of human corneal epithelial stem cells.

Indexed as

AdultBasic Helix-Loop-Helix Leucine Zipper Transcription Factorsbeta CateninBiomarkersCell NucleusCell ProliferationCyclin-Dependent Kinase Inhibitor p57Down-RegulationEpithelial CellsEpithelium, CornealGene SilencingHumansInhibitor of Apoptosis ProteinsLimbus CorneaeMiddle AgedModels, BiologicalBasic Helix-Loop-Helix Leucine Zipper Transcription Factorsbeta CateninBiomarkersBIRC5 protein, humanCDKN1C protein, humanCyclin-Dependent Kinase Inhibitor p57Inhibitor of Apoptosis ProteinsRNA, Small InterferingSurvivinTCF4 protein, humanTranscription Factor 4Transcription Factors

Identifiers

PMID22232078
PMCPMC5610543
OpenAlexW2077096670

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.