Evidence map›Paper›PMID 25948043›Full record

ArticleIn vitro cellular & developmental biology. Animal2015

Recombinant pigment epithelium-derived factor PEDF binds vascular endothelial growth factor receptors 1 and 2.

Erin K Johnston, Mary K Francis, Janice E Knepper

Abstract read
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In one paragraph

Article in In vitro cellular & developmental biology. Animal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.7field-weighted citation impact, top 17% 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

15 citing papers in PubMed, 22 citations in OpenAlex.

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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

3 authors at 2 institutions in 2 countries.

Erin K JohnstonJanssen Research and Development, LLC, Pharma R&D Quality and Compliance, 1400 McKean Road, Building 32-12334, Spring House, PA, 19477, USA, Ejohnst1@its.jnj.com.
Mary K Francis
Janice E Knepper
Villanova University · USJanssen (Belgium) · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Angiogenesis, or the formation of new blood vessels, is stimulated by angiogenic factors such as vascular endothelial growth factor (VEGF). Pigment epithelium-derived factor (PEDF) is a potent inhibitor of angiogenesis. To explore the mechanism by which PEDF acts, recombinant PEDF was expressed with a 6x-His tag (for purification) and a green fluorescent protein (GFP) tag. The PEDF fusion protein was confirmed to be active in inhibition of endothelial cell proliferation and migration. Direct binding of PEDF to both vascular endothelial growth factor receptor-1 (VEGFR-1) and VEGFR-2 was demonstrated in an in vitro assay similar to an enzyme-linked immunosorbent assay (ELISA). PEDF was shown by immune-confocal microscopy to be localized within treated endothelial cells. When VEGF-stimulated endothelial cells were incubated with PEDF the VEGF receptors showed intracellular localization. These data suggest that the interaction between PEDF and VEGFR-1 or VEGFR-2 may be a possible mechanism for inhibiting angiogenesis. PEDF may be binding to the VEGF receptors to promote their internalization and/or degradation to limit VEGF responses in treated cells.

Indexed as

Cell MovementCell SurvivalEndothelium, VascularEye ProteinsGreen Fluorescent ProteinsHumansHuman Umbilical Vein Endothelial CellsNerve Growth FactorsPigment Epithelium-Derived FactorRecombinant Fusion ProteinsSerpinsVascular Endothelial Growth Factor Receptor-1Vascular Endothelial Growth Factor Receptor-2Eye ProteinsGreen Fluorescent ProteinsKDR protein, humanNerve Growth FactorsPigment Epithelium-Derived FactorRecombinant Fusion ProteinsSerpinsVascular Endothelial Growth Factor Receptor-1Vascular Endothelial Growth Factor Receptor-2

Identifiers

PMID25948043
OpenAlexW797241156

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.