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铁死亡程序性细胞死亡:抗氧化剂作为缓解剂。

Programmed Cell-Death by Ferroptosis: Antioxidants as Mitigators.

机构信息

Nutrition and Obesity Group, Department of Nutrition and Food Sciences, University of the Basque Country (UPV/EHU), 01006 Vitoria, Spain.

King's College London, Department of Nutritional Sciences, Faculty of Life Sciences and Medicine, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, UK.

出版信息

Int J Mol Sci. 2019 Oct 8;20(19):4968. doi: 10.3390/ijms20194968.


DOI:10.3390/ijms20194968
PMID:31597407
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6801403/
Abstract

Iron, the fourth most abundant element in the Earth's crust, is vital in living organisms because of its diverse ligand-binding and electron-transfer properties. This ability of iron in the redox cycle as a ferrous ion enables it to react with HO, in the Fenton reaction, to produce a hydroxyl radical (•OH)-one of the reactive oxygen species (ROS) that cause deleterious oxidative damage to DNA, proteins, and membrane lipids. Ferroptosis is a non-apoptotic regulated cell death that is dependent on iron and reactive oxygen species (ROS) and is characterized by lipid peroxidation. It is triggered when the endogenous antioxidant status of the cell is compromised, leading to lipid ROS accumulation that is toxic and damaging to the membrane structure. Consequently, oxidative stress and the antioxidant levels of the cells are important modulators of lipid peroxidation that induce this novel form of cell death. Remedies capable of averting iron-dependent lipid peroxidation, therefore, are lipophilic antioxidants, including vitamin E, ferrostatin-1 (Fer-1), liproxstatin-1 (Lip-1) and possibly potent bioactive polyphenols. Moreover, most of the enzymes and proteins that cascade or interact in the pathway of ferroptosis such as a subunit of the cystine/glutamate transporter x (SLC7A11), glutathione peroxidase 4 (GPX4), and the glutamate-cysteine ligase (GCLC) iron metabolism genes transferrin receptor 1 (TfR1) ferroportin, (Fpn) heme oxygenase 1 (HO-1) and ferritin are regulated by the antioxidant response element of the transcription factor, Nrf2. These, as well as other radical trapping antioxidants (RTAs), are discussed in the current review.

摘要

铁是地壳中第四丰富的元素,由于其多样的配体结合和电子转移特性,对生物体至关重要。铁在氧化还原循环中的亚铁离子能力使其能够与 HO 反应,在 Fenton 反应中产生羟基自由基(•OH)- 一种活性氧物种(ROS),导致 DNA、蛋白质和膜脂质的有害氧化损伤。铁死亡是一种非凋亡性的受调控的细胞死亡,依赖于铁和活性氧物种(ROS),其特征是脂质过氧化。当细胞内源性抗氧化状态受损时,就会触发铁死亡,导致脂质 ROS 积累,对膜结构有毒且具有破坏性。因此,氧化应激和细胞的抗氧化水平是诱导这种新型细胞死亡的脂质过氧化的重要调节剂。能够避免铁依赖性脂质过氧化的补救措施因此是亲脂性抗氧化剂,包括维生素 E、ferrostatin-1 (Fer-1)、liproxstatin-1 (Lip-1) 和可能有效的生物活性多酚。此外,铁死亡途径中级联或相互作用的大多数酶和蛋白质,如胱氨酸/谷氨酸转运蛋白 x(SLC7A11)的亚基、谷胱甘肽过氧化物酶 4(GPX4)和谷氨酸-半胱氨酸连接酶(GCLC)铁代谢基因转铁蛋白受体 1(TfR1)、铁蛋白、血红素加氧酶 1(HO-1)和铁蛋白,都受到转录因子 Nrf2 的抗氧化反应元件的调节。本文讨论了这些以及其他自由基捕获抗氧化剂(RTAs)。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fff/6801403/9a7a98d5c39d/ijms-20-04968-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fff/6801403/0dacf16d18e9/ijms-20-04968-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fff/6801403/9a7a98d5c39d/ijms-20-04968-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fff/6801403/0dacf16d18e9/ijms-20-04968-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fff/6801403/9a7a98d5c39d/ijms-20-04968-g002.jpg

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[3]
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[4]
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[5]
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[6]
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[7]
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[8]
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[9]
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[10]
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本文引用的文献

[1]
Quercetin as an innovative therapeutic tool for cancer chemoprevention: Molecular mechanisms and implications in human health.

Cancer Med. 2020-12

[2]
Cysteine, glutathione and a new genetic code: biochemical adaptations of the primordial cells that spread into open water and survived biospheric oxygenation.

Biol Chem. 2020-2-25

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Curcumin and (-)- Epigallocatechin-3-Gallate Protect Murine MIN6 Pancreatic Beta-Cells Against Iron Toxicity and Erastin-Induced Ferroptosis.

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Pathol Oncol Res. 2019-4

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Free Radic Biol Med. 2018-9-28

[10]
Iron catalysis of lipid peroxidation in ferroptosis: Regulated enzymatic or random free radical reaction?

Free Radic Biol Med. 2018-9-12

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