Evidence map›Paper›PMID 29132420›Full record

ArticleStem cell research & therapy2017

Substance P and patterned silk biomaterial stimulate periodontal ligament stem cells to form corneal stroma in a bioengineered three-dimensional model.

Jialin Chen, Wei Zhang, Peyman Kelk, Ludvig J Backman, Patrik Danielson

Open access · goldAbstract read
In one paragraph

Article in Stem cell research & therapy, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 33% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Biomedical Application of MSCs in Corneal Regeneration and Repair.International journal of molecular sciences · 2025
    Review
  4. Corneal stromal regeneration-keratoconus cell therapy: a review.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023
    Review
  5. Review
  6. Article
  7. Review
  8. Review
  9. Article
  10. Corneal pain and experimental model development.Progress in retinal and eye research · 2019
    Review
  11. Corneal Repair and Regeneration: Current Concepts and Future Directions.Frontiers in bioengineering and biotechnology · 2019
    Review
  12. Article
  13. Review
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 1 institution in 1 country.

Jialin ChenDepartment of Integrative Medical Biology, Anatomy, Umeå University, SE-901 87, Umeå, Sweden.ORCID http://orcid.org/0000-0001-5038-3474
Wei ZhangDepartment of Integrative Medical Biology, Anatomy, Umeå University, SE-901 87, Umeå, Sweden.
Peyman KelkDepartment of Integrative Medical Biology, Anatomy, Umeå University, SE-901 87, Umeå, Sweden.
Ludvig J BackmanDepartment of Integrative Medical Biology, Anatomy, Umeå University, SE-901 87, Umeå, Sweden.
Patrik DanielsonDepartment of Integrative Medical Biology, Anatomy, Umeå University, SE-901 87, Umeå, Sweden. patrik.danielson@umu.se.
Umeå University · SE

Funding

Vetenskapsrådet 521-2013-2612
6 · The paper itself

Abstract

backgroundWe aimed to generate a bioengineered multi-lamellar human corneal stroma tissue in vitro by differentiating periodontal ligament stem cells (PDLSCs) towards keratocytes on an aligned silk membrane.

methodsHuman PDLSCs were isolated and identified. The neuropeptide substance P (SP) was added in keratocyte differentiation medium (KDM) to evaluate its effect on keratocyte differentiation of PDLSCs. PDLSCs were then seeded on patterned silk membrane and cultured with KDM and SP. Cell alignment was evaluated and the expression of extracellular matrix (ECM) components of corneal stroma was detected. Finally, multi-lamellar tissue was constructed in vitro by PDLSCs seeded on patterned silk membranes, which were stacked orthogonally and stimulated by KDM supplemented with SP for 18 days. Sections were prepared and subsequently stained with hematoxylin and eosin or antibodies for immunofluorescence observation of human corneal stroma-related proteins.

resultsSP promoted the expression of corneal stroma-related collagens (collagen types I, III, V, and VI) during the differentiation induced by KDM. Patterned silk membrane guided cell alignment of PDLSCs, and important ECM components of the corneal stroma were shown to be deposited by the cells. The constructed multi-lamellar tissue was found to support cells growing between every two layers and expressing the main type of collagens (collagen types I and V) and proteoglycans (lumican and keratocan) of normal human corneal stroma.

conclusionsMulti-lamellar human corneal stroma-like tissue can be constructed successfully in vitro by PDLSCs seeded on orthogonally aligned, multi-layered silk membranes with SP supplementation, which shows potential for future corneal tissue engineering.

Indexed as

BiomarkersCell DifferentiationCollagenCorneal StromaCulture MediaGene ExpressionHumansKeratinocytesLumicanPeriodontal LigamentPrimary Cell CultureProtein IsoformsProteoglycansSilkStem CellsSubstance PBiomarkersCollagenCulture MediaKERA protein, humanLumicanLUM protein, humanProtein IsoformsProteoglycansSilkSubstance PAligned silk membraneCorneal stromaDifferentiationPDLSCsSubstance P

Identifiers

PMID29132420
PMCPMC5683543
OpenAlexW2770297764

What OpenQuestion holds

Textmetadata
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.