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@ARTICLE{Ingold:139754,
author = {Ingold, Irina and Berndt, Carsten and Schmitt, Sabine and
Doll, Sebastian and Poschmann, Gereon and Buday, Katalin and
Roveri, Antonella and Peng, Xiaoxiao and Porto Freitas,
Florencio and Seibt, Tobias and Mehr, Lisa and Aichler,
Michaela and Walch, Axel and Lamp, Daniel and Jastroch,
Martin and Miyamoto, Sayuri and Wurst, Wolfgang and Ursini,
Fulvio and Arnér, Elias S J and Fradejas-Villar, Noelia and
Schweizer, Ulrich and Zischka, Hans and Friedmann Angeli,
José Pedro and Conrad, Marcus},
title = {{S}elenium {U}tilization by {GPX}4 {I}s {R}equired to
{P}revent {H}ydroperoxide-{I}nduced {F}erroptosis.},
journal = {Cell},
volume = {172},
number = {3},
issn = {0092-8674},
address = {New York, NY},
publisher = {Elsevier},
reportid = {DZNE-2020-06076},
pages = {409-422.e21},
year = {2018},
abstract = {Selenoproteins are rare proteins among all kingdoms of life
containing the 21st amino acid, selenocysteine.
Selenocysteine resembles cysteine, differing only by the
substitution of selenium for sulfur. Yet the actual
advantage of selenolate- versus thiolate-based catalysis has
remained enigmatic, as most of the known selenoproteins also
exist as cysteine-containing homologs. Here, we demonstrate
that selenolate-based catalysis of the essential mammalian
selenoprotein GPX4 is unexpectedly dispensable for normal
embryogenesis. Yet the survival of a specific type of
interneurons emerges to exclusively depend on
selenocysteine-containing GPX4, thereby preventing fatal
epileptic seizures. Mechanistically, selenocysteine
utilization by GPX4 confers exquisite resistance to
irreversible overoxidation as cells expressing a cysteine
variant are highly sensitive toward peroxide-induced
ferroptosis. Remarkably, concomitant deletion of all
selenoproteins in Gpx4cys/cys cells revealed that
selenoproteins are dispensable for cell viability provided
partial GPX4 activity is retained. Conclusively, 200 years
after its discovery, a specific and indispensable role for
selenium is provided.},
keywords = {Animals / Apoptosis / Cell Survival / Cells, Cultured /
Female / Glutathione Peroxidase: genetics / Glutathione
Peroxidase: metabolism / HEK293 Cells / Humans / Hydrogen
Peroxide: toxicity / Interneurons: metabolism / Lipid
Peroxidation / Male / Mice / Mice, Inbred C57BL /
Phospholipid Hydroperoxide Glutathione Peroxidase /
Seizures: etiology / Seizures: metabolism / Selenium:
metabolism / Hydrogen Peroxide (NLM Chemicals) /
Phospholipid Hydroperoxide Glutathione Peroxidase (NLM
Chemicals) / Glutathione Peroxidase (NLM Chemicals) /
glutathione peroxidase 4, mouse (NLM Chemicals) / Selenium
(NLM Chemicals)},
cin = {AG Wurst},
ddc = {610},
cid = {I:(DE-2719)1140001},
pnm = {342 - Disease Mechanisms and Model Systems (POF3-342)},
pid = {G:(DE-HGF)POF3-342},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29290465},
doi = {10.1016/j.cell.2017.11.048},
url = {https://pub.dzne.de/record/139754},
}