Evidence map›Paper›PMID 28806736›Full record

ArticlePloS one2017

Unravelling the interplay of sphingolipids and TGF-β signaling in the human corneal stroma.

Sarah E Nicholas, Tyler G Rowsey, Shrestha Priyadarsini, Nawajes A Mandal, Dimitrios Karamichos

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
0.6field-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

17 citing papers in PubMed, 18 citations in OpenAlex.

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  15. Article
  16. Inflammatory Ocular Diseases and Sphingolipid Signaling.Advances in experimental medicine and biology · 2019
    Review
  17. Sphingolipids as Emerging Mediators in Retina Degeneration.Frontiers in cellular neuroscience · 2019
    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 2 institutions in 1 country.

Sarah E NicholasDepartment of Ophthalmology/ Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America.
Tyler G RowseyDepartment of Ophthalmology/ Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America.
Shrestha PriyadarsiniDepartment of Ophthalmology/ Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America.
Nawajes A MandalDepartment of Ophthalmology /University of Tennessee Health Science Center, Memphis, Tennessee, United States of America.
Dimitrios KaramichosDepartment of Ophthalmology/ Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America.ORCID http://orcid.org/0000-0002-8761-3824
Dean McGee Eye Institute · USUniversity of Tennessee Health Science Center · US

Funding

Sphingolipid Metabolism and Signaling in the RetinaR01EY022071 · NEI · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI MANDAL, NAWAJES · 2012 to 2016
$1.8M
Sphingolipid signaling in corneal wound healing and fibrosisR21EY025256 · NEI · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI KARAMICHOS, DIMITRIOS, MANDAL, NAWAJES · 2015 to 2016
$429k
NEI NIH HHS R01 EY022071NEI NIH HHS R21 EY025256
6 · The paper itself

Abstract

purposeTo delineate the role of Sphingolipids (SPLs) in the human cornea and their cross-talks with transforming growth factor beta (TGF-β) in order to develop novel, non-invasive therapies.

methodsHuman corneal fibroblasts (HCFs) were harvested from healthy donors, stimulated with Vitamin C to promote extracellular matrix assembly, treated with exogenous sphingosine-1-phosphate (S1P) or sphingosine kinase inhibitor 2 (SPHK I2) and isolated after 4 weeks for further analysis.

resultsData showed that S1P led to a significant decrease in cellular migration where SPHK I2 just delayed it for 24h. Significant modulation of the sphingolipid pathway was also noted. Sphingosine kinase-1 (SphK1) was significantly downregulated upon exogenous stimulation with S1P at a concentration of 5μM and Sphingosine kinase-2 (SphK2) was also significantly downregulated at concentrations of 0.01μM, 0.1μM, and 5μM; whereas no effects were observed upon stimulation with SPHK I2. S1PR3 was significantly downregulated by 0.1μM and 5μM S1P and upregulated by 5μM and 10μM SPHK I2. Furthermore, both S1P and SPHK I2 regulated corneal fibrosis markers such as alpha-smooth muscle actin, collagen I, III, and V. We also investigated the interplay between two TGF-β isoforms and S1P/SPHK I2 treatments and found that TGF-β1 and TGF-β3 were both significantly upregulated with the 0.1μM S1P but were significantly downregulated with the 5μM S1P concentration. When TGF-β1 was compared directly to TGF-β3 expression, we observed that TGF-β3 was significantly downregulated compared to TGF-β1 in the 5μM concentration of S1P. No changes were observed upon SPHK I2 treatment.

conclusionOur study delineates the role of sphingolipids in the human cornea and highlights their different activities based on the cell/tissue type.

Indexed as

Signal TransductionBlotting, WesternCell ExtractsCell MovementCorneal StromaFibroblastsFibrosisHumansLysophospholipidsPhosphotransferases (Alcohol Group Acceptor)Protein IsoformsProtein Kinase InhibitorsSphingolipidsSphingosineSphingosine KinaseTransforming Growth Factor betaCell ExtractsLysophospholipidsPhosphotransferases (Alcohol Group Acceptor)Protein IsoformsProtein Kinase InhibitorsSphingolipidsSphingosinesphingosine 1-phosphateSphingosine KinaseTransforming Growth Factor beta

Identifiers

PMID28806736
PMCPMC5555661
OpenAlexW2746868349

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.