Evidence map›Paper›PMID 30171859›Full record

ArticleExperimental eye research2019

Oxidative stress induces ferroptotic cell death in retinal pigment epithelial cells.

Kiyohito Totsuka, Takashi Ueta, Takatoshi Uchida, Murilo F Roggia, Suguru Nakagawa, Demetrios G Vavvas, Megumi Honjo, Makoto Aihara

Abstract read
In one paragraph

Article in Experimental eye research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 110 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
110citing papers in PubMed, 1 pooled it
–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

110 citing papers in PubMed, 1 synthesis or guideline pooled it.

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50 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

8 authors.

Kiyohito TotsukaDepartment of Ophthalmology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan. Electronic address: kiyototsuka916@gmail.com.
Takashi UetaDepartment of Ophthalmology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan; Department of Ophthalmology, Center Hospital of the National Center for Global Health and Medicine, 1-21-1 Toyama Shinjyuku-ku, Tokyo, 162-8655, Japan. Electronic address: ueta-tky@umin.ac.jp.
Takatoshi UchidaDepartment of Ophthalmology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan; Senju Laboratory, Senju Pharmaceutical Co. Ltd., Kobe, Japan. Electronic address: t-uchida@senju.co.jp.
Murilo F RoggiaDepartment of Ophthalmology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan. Electronic address: mfroggia@gmail.com.
Suguru NakagawaDepartment of Ophthalmology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan. Electronic address: sugu135@gmail.com.
Demetrios G VavvasAngiogenesis Laboratory, Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, 02114, USA. Electronic address: Demetrios_Vavvas@meei.harvard.edu.
Megumi HonjoDepartment of Ophthalmology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan. Electronic address: m_honjo@kuhp.kyoto-u.ac.jp.
Makoto AiharaDepartment of Ophthalmology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan. Electronic address: aihara-tky@umin.net.

Funding

Necroptosis, neuroprotection and axonal regeneration in retina ganglion cell injuryR01EY025362 · NEI · MASSACHUSETTS EYE AND EAR INFIRMARY · PI VAVVAS, DEMETRIOS · 2015 to 2018
$1.5M
Necroptosis and Neuroprotection in AMDR21EY023079 · NEI · MASSACHUSETTS EYE AND EAR INFIRMARY · PI VAVVAS, DEMETRIOS · 2013 to 2014
$404k
NEI NIH HHS R01 EY025362NEI NIH HHS R21 EY023079
6 · The paper itself

Abstract

The dysfunction and cell death of retinal pigment epithelial (RPE) cells are hallmarks of late-stage dry (atrophic) age-related macular degeneration (AMD), for which no effective therapy has yet been developed. Previous studies have indicated that iron accumulation is a source of excess free radical production in RPE, and age-dependent iron accumulation in RPE is accelerated in patients with dry AMD. Although the pathogenic role of oxidative stress in RPE in the development of dry AMD is widely accepted, the mechanisms of oxidative stress-induced RPE cell death remain elusive. Here, we show that ferroptotic cell death, a mode of regulated necrosis mediated by iron and lipid peroxidation, is implicated in oxidative stress-induced RPE cell death in vitro. In ARPE-19 cells we observed that the ferroptosis inhibitors ferrostatin-1 and deferoxamine (DFO) rescued tert-butyl hydroperoxide (tBH)-induced RPE cell death more effectively than inhibitors of apoptosis or necroptosis. tBH-induced RPE cell death was accompanied by the three characteristics of ferroptotic cell death: lipid peroxidation, glutathione depletion, and ferrous iron accumulation, which were all significantly attenuated by ferrostatin-1 and DFO. Exogenous iron overload enhanced tBH-induced RPE cell death, but this effect was also attenuated by ferrostatin-1 and DFO. Furthermore, mRNA levels of numerous genes known to regulate iron metabolism were observed to be influenced by oxidative stress. Taken together, our observations suggest that multiple modes of cell death are involved in oxidative stress-induced RPE cell death, with ferroptosis playing a particularly important role.

Indexed as

ApoptosisCell DeathCells, CulturedCell SurvivalFerroptosisHumansIronLipid PeroxidationMacular DegenerationOxidative StressReactive Oxygen SpeciesRetinal Pigment EpitheliumIronReactive Oxygen SpeciesCell deathFerroptosisOxidative stressRetinal pigment epithelial cells

Identifiers

PMID30171859
PMCPMC7418497

What OpenQuestion holds

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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.