Evidence map›Paper›PMID 21175372›Full record

ArticleTissue engineering. Part C, Methods2011

A new isolation method of human limbal progenitor cells by maintaining close association with their niche cells.

Szu-Yu Chen, Yasutaka Hayashida, Mei-Yun Chen, Hua Tao Xie, Scheffer C G Tseng

Open access · greenAbstract read
In one paragraph

Article in Tissue engineering. Part C, Methods, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed
7.7field-weighted citation impact, top 2% 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

76 citing papers in PubMed, 136 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Reprogramming of Human Limbal Niche Progenitors.International journal of medical sciences · 2026
    Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Isolation andBio-protocol · 2022
    Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Stem Cell Niche Microenvironment: Review.Bioengineering (Basel, Switzerland) · 2021
    Review
  15. Process development and safety evaluation of ABCB5Stem cell research & therapy · 2021
    Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review

16 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

5 authors at 3 institutions in 3 countries.

Szu-Yu ChenOcular Surface Center, TissueTech, Inc., Miami, Florida 33173, USA.
Yasutaka Hayashida
Mei-Yun Chen
Hua Tao Xie
Scheffer C G Tseng
Ocular Surface Center · USNational Taiwan University Hospital · TWOsaka University Hospital · JP

Funding

VITAMIN A AND CONJUNCTIVAL TRANSDIFFERENTIATIONR01EY006819 · NEI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI TSENG, SCHEFFER CG · 1986 to 2020
$6.7M
TRANSPLANTATION OF EXPANDED LIMBAL EPITHELIAL STEM CELLSR01EY015735 · NEI · TISSUETECH, INC. · PI TSENG, SCHEFFER C G · 2004 to 2007
$1.2M
NEI NIH HHS R01 EY006819NEI NIH HHS R01 EY015735NEI NIH HHS R01 EY06819
6 · The paper itself

Abstract

In human corneal epithelium, self-renewal and fate decision of stem cells are highly regulated in a niche microenvironment called palisades of Vogt in the limbus. Herein, we discovered that digestion with dispase, which cleaves off the basement membrane, did not remove the entire basal epithelial progenitor cells. In contrast, digestion with collagenase isolated on cluster consisting of not only entire epithelial progenitor cells but also their closely associated mesenchymal cells because of better preservation of some basement membrane matrix. Collagenase isolated more basal epithelial progenitor cells, which were p63α+ and small in the size (8 μm in diameter), and generated significantly more holoclones and meroclones on 3T3 fibroblast feeder layers than dispase. Further, collagenase isolated more small pan-cytokeratin-/p63α-/vimentin+ cells with the size as small as 5 μm in diameter and heterogeneously expressing vimentin, Oct4, Sox2, Nanog, Rex1, Nestin, N-cadherin, SSEA4, and CD34. Maintenance of close association between them led to clonal growth in a serum-free, low-calcium medium, whereas disruption of such association by trypsin/EDTA resulted in no clonal growth unless cocultured with 3T3 fibroblast feeder layers. Similarly, on epithelially denuded amniotic membrane, maintenance of such association led to consistent and robust epithelial outgrowth, which was also abolished by trypsin/EDTA. Epithelial outgrowth generated by collagenase-isolated clusters was significantly larger in diameter and its single cells yielded more holoclones on 3T3 fibroblast feeder layers than that from dispase-isolated sheets. This new isolation method can be used for exploring how limbal epithelial stem cells are regulated by their native niche cells.

Indexed as

Cell Communication3T3 CellsAdultAgedAnimalsCell AggregationCell ProliferationCell SeparationCell SizeClone CellsCollagenasesEndopeptidasesEpithelial CellsFluorescent Antibody TechniqueHumansKeratinsCollagenasesdispaseEndopeptidasesKeratinsVimentin

Identifiers

PMID21175372
PMCPMC3129703
OpenAlexW2068563203

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.