Genetic iron chelation protects against proteasome inhibition-induced dopamine neuron degeneration.
Identifieur interne : 000513 ( Main/Exploration ); précédent : 000512; suivant : 000514Genetic iron chelation protects against proteasome inhibition-induced dopamine neuron degeneration.
Auteurs : Wen Zhu [États-Unis] ; Xuping Li ; Wenjie Xie ; Feifei Luo ; Deepinder Kaur ; Julie. Andersen ; Joseph Jankovic [États-Unis] ; Weidong LeSource :
- Neurobiology of disease ; 2010.
English descriptors
- KwdEn :
- Acetylcysteine (analogs & derivatives), Acetylcysteine (pharmacology), Animals, Apoferritins (genetics), Cation Transport Proteins (metabolism), Chelation Therapy (methods), Corpus Striatum (metabolism), Corpus Striatum (physiopathology), Cysteine Proteinase Inhibitors (pharmacology), Cytoprotection (genetics), Dopamine (metabolism), Gene Expression Regulation (genetics), Genetic Therapy (methods), Iron Metabolism Disorders (genetics), Iron Metabolism Disorders (metabolism), Iron Metabolism Disorders (therapy), Mice, Mice, Transgenic, Nerve Degeneration (genetics), Nerve Degeneration (metabolism), Nerve Degeneration (therapy), Neurons (metabolism), Parkinson Disease (genetics), Parkinson Disease (metabolism), Parkinson Disease (therapy), Proteasome Endopeptidase Complex (metabolism), Proteasome Inhibitors, Substantia Nigra (metabolism), Substantia Nigra (physiopathology).
- MESH :
- chemical , analogs & derivatives : Acetylcysteine.
- chemical , genetics : Apoferritins.
- chemical , metabolism : Cation Transport Proteins, Dopamine, Proteasome Endopeptidase Complex.
- chemical , pharmacology : Acetylcysteine, Cysteine Proteinase Inhibitors.
- genetics : Cytoprotection, Gene Expression Regulation, Iron Metabolism Disorders, Nerve Degeneration, Parkinson Disease.
- metabolism : Corpus Striatum, Iron Metabolism Disorders, Nerve Degeneration, Neurons, Parkinson Disease, Substantia Nigra.
- methods : Chelation Therapy, Genetic Therapy.
- physiopathology : Corpus Striatum, Substantia Nigra.
- therapy : Iron Metabolism Disorders, Nerve Degeneration, Parkinson Disease.
- Animals, Mice, Mice, Transgenic, Proteasome Inhibitors.
Abstract
Impairment of the ubiquitin proteasome system (UPS) and iron accumulation in the substantia nigra (SN) have both been implicated in the pathogenesis of Parkinson's disease (PD). We previously reported that chemical iron chelation can protect against proteasome inhibitor lactacystin-induced dopamine (DA) neurodegeneration in vivo. Here, we tested potential neuroprotection via genetic expression of the iron chelator human ferritin heavy chain (H-ferritin). We found that overexpression of H-ferritin in DA neurons significantly reduced lactacystin-induced nigral DA neuron loss and striatal DA depletion. Overexpression of H-ferritin also attenuated elevated levels of total and ferrous iron as well as the divalent metal ion transporter 1 (DMT1) in the SN following lactacystin treatment. In addition, overexpression of H-ferritin alleviated the inhibitory effects of lactacystin on proteasome activity in the nigral tissues. These results suggest that H-ferritin exerts neuroprotection possibly by modulating iron homeostasis and restoring proteasome activity.
DOI: 10.1016/j.nbd.2009.09.024
PubMed: 19818853
Affiliations:
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Le document en format XML
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<series><title level="j">Neurobiology of disease</title>
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<term>Cation Transport Proteins (metabolism)</term>
<term>Chelation Therapy (methods)</term>
<term>Corpus Striatum (metabolism)</term>
<term>Corpus Striatum (physiopathology)</term>
<term>Cysteine Proteinase Inhibitors (pharmacology)</term>
<term>Cytoprotection (genetics)</term>
<term>Dopamine (metabolism)</term>
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<term>Iron Metabolism Disorders (genetics)</term>
<term>Iron Metabolism Disorders (metabolism)</term>
<term>Iron Metabolism Disorders (therapy)</term>
<term>Mice</term>
<term>Mice, Transgenic</term>
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<term>Nerve Degeneration (metabolism)</term>
<term>Nerve Degeneration (therapy)</term>
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<term>Parkinson Disease (therapy)</term>
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<term>Cysteine Proteinase Inhibitors</term>
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<term>Gene Expression Regulation</term>
<term>Iron Metabolism Disorders</term>
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<term>Parkinson Disease</term>
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<term>Nerve Degeneration</term>
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<term>Parkinson Disease</term>
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<front><div type="abstract" xml:lang="en">Impairment of the ubiquitin proteasome system (UPS) and iron accumulation in the substantia nigra (SN) have both been implicated in the pathogenesis of Parkinson's disease (PD). We previously reported that chemical iron chelation can protect against proteasome inhibitor lactacystin-induced dopamine (DA) neurodegeneration in vivo. Here, we tested potential neuroprotection via genetic expression of the iron chelator human ferritin heavy chain (H-ferritin). We found that overexpression of H-ferritin in DA neurons significantly reduced lactacystin-induced nigral DA neuron loss and striatal DA depletion. Overexpression of H-ferritin also attenuated elevated levels of total and ferrous iron as well as the divalent metal ion transporter 1 (DMT1) in the SN following lactacystin treatment. In addition, overexpression of H-ferritin alleviated the inhibitory effects of lactacystin on proteasome activity in the nigral tissues. These results suggest that H-ferritin exerts neuroprotection possibly by modulating iron homeostasis and restoring proteasome activity.</div>
</front>
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<name sortKey="Le, Weidong" sort="Le, Weidong" uniqKey="Le W" first="Weidong" last="Le">Weidong Le</name>
<name sortKey="Li, Xuping" sort="Li, Xuping" uniqKey="Li X" first="Xuping" last="Li">Xuping Li</name>
<name sortKey="Luo, Feifei" sort="Luo, Feifei" uniqKey="Luo F" first="Feifei" last="Luo">Feifei Luo</name>
<name sortKey="Xie, Wenjie" sort="Xie, Wenjie" uniqKey="Xie W" first="Wenjie" last="Xie">Wenjie Xie</name>
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