Evidence map›Paper›PMID 25277027›Full record

ArticleExperimental eye research2014

Iron upregulates melanogenesis in cultured retinal pigment epithelial cells.

Natalie Wolkow, Yafeng Li, Arvydas Maminishkis, Ying Song, Oleg Alekseev, Jared Iacovelli, Delu Song, Jennifer C Lee, Joshua L Dunaief

Abstract read
In one paragraph

Article in Experimental eye research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
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

16 citing papers in PubMed.

  1. Review
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  4. Exploring the origins of frequent tau-PET signal in vermal and adjacent regions.European journal of nuclear medicine and molecular imaging · 2025
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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

9 authors.

Natalie WolkowF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratories, 422 Curie Blvd, Philadelphia, PA 19104, USA.
Yafeng LiF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratories, 422 Curie Blvd, Philadelphia, PA 19104, USA.
Arvydas MaminishkisSection of Epithelial and Retinal Physiology and Disease, National Eye Institute, National Institutes of Health, Bldg. 10, Rm. 10B04, MSC 1861, 10 Center Drive, Bethesda, MD 20892, USA.
Ying SongF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratories, 422 Curie Blvd, Philadelphia, PA 19104, USA.
Oleg AlekseevF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratories, 422 Curie Blvd, Philadelphia, PA 19104, USA.
Jared IacovelliF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratories, 422 Curie Blvd, Philadelphia, PA 19104, USA.
Delu SongF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratories, 422 Curie Blvd, Philadelphia, PA 19104, USA.
Jennifer C LeeF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratories, 422 Curie Blvd, Philadelphia, PA 19104, USA.
Joshua L DunaiefF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratories, 422 Curie Blvd, Philadelphia, PA 19104, USA. Electronic address: jdunaief@mail.med.upenn.edu.

Funding

Scientific TransparencyP30EY001583 · NEI · UNIVERSITY OF PENNSYLVANIA · PI Qi N Cui · 1985 to 2026
$19.5M
Human Retinal Pigment Epithelial PhysiologyZIAEY000419 · NEI · NATIONAL EYE INSTITUTE · PI SCHNEEWEIS, DAVID · 2009 to 2020
$12.0M
Retinal Iron Transport in Health and DiseaseR01EY015240 · NEI · UNIVERSITY OF PENNSYLVANIA · PI JOSHUA L DUNAIEF · 2004 to 2026
$10.4M
NEI NIH HHS P30 EY001583NEI NIH HHS R01 EY015240NEI NIH HHS R01EY015240
6 · The paper itself

Abstract

The purpose of our studies was to examine the relationship between iron and melanogenesis in retinal pigment epithelial cells, as prior observations had suggested that iron may promote melanogenesis. This relationship has potential clinical importance, as both iron overload and hyperpigmentation are associated with age-related macular degeneration (AMD). Human fetal retinal pigment epithelial cells and ARPE-19 cells were treated with iron in the form of ferric ammonium citrate, after which quantitative RT-PCR and electron microscopy were performed. Melanogenesis genes tyrosinase, tyrosinase-related protein 1, Hermansky-Pudlak Syndrome 3, premelanosome protein and dopachrome tautomerase were upregulated, as was the melanogenesis-controlling transcription factor, microphthalmia-associated transcription factor (MITF). Iron-treated cells had increased pigmentation and melanosome number. Multiple transcription factors upstream of MITF were upregulated by iron.

Indexed as

Blotting, WesternCarrier ProteinsCells, CulturedFerric CompoundsGestational Agegp100 Melanoma AntigenHumansIntracellular Signaling Peptides and ProteinsIntramolecular OxidoreductasesMelaninsMelanosomesMembrane GlycoproteinsMonophenol MonooxygenaseOxidoreductasesQuaternary Ammonium CompoundsReal-Time Polymerase Chain ReactionCarrier Proteinsdopachrome isomeraseferric ammonium citrateFerric Compoundsgp100 Melanoma AntigenHPS3 protein, humanIntracellular Signaling Peptides and ProteinsIntramolecular OxidoreductasesMelaninsMembrane GlycoproteinsMonophenol MonooxygenaseOxidoreductasesPMEL protein, humanQuaternary Ammonium CompoundsRNA, MessengerTYRP1 protein, humanARPE-19 cellsHuman fetal retinal pigment epithelial cellsIronLEF 1MelanosomeMITFRetinal pigment epithelium

Identifiers

PMID25277027
PMCPMC4252790

What OpenQuestion holds

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Read underepoch 390

Registered trials

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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.