Cited by 419Amyotrophic Lateral Sclerosis ResearchAlzheimer's disease research and treatmentsHereditary Neurological Disorders

Chromogranin-mediated secretion of mutant superoxide dismutase proteins linked to amyotrophic lateral sclerosis

Urushitani, Makoto, Sik, Attila, Sakurai, Takashi, Nukina, Nobuyuki, Takahashi, Ryosuke, Julien, Jean-Pierre·2006·Nature Neuroscience

Abstract

Here we report that chromogranins, components of neurosecretory vesicles, interact with mutant forms of superoxide dismutase (SOD1) that are linked to amyotrophic lateral sclerosis (ALS), but not with wild-type SOD1. This interaction was confirmed by yeast two-hybrid screen and by co-immunoprecipitation assays using either lysates from Neuro2a cells coexpressing chromogranins and SOD1 mutants or lysates from spinal cord of ALS mice. Confocal and immunoelectron microscopy revealed a partial colocalization of mutant SOD1 with chromogranins in spinal cord of ALS mice. Mutant SOD1 was also found in immuno-isolated trans-Golgi network and in microsome preparations, suggesting that it can be secreted. Indeed we report evidence that chromogranins may act as chaperone-like proteins to promote secretion of SOD1 mutants. From these results, and our finding that extracellular mutant SOD1 can trigger microgliosis and neuronal death, we propose a new ALS pathogenic model based on the toxicity of secreted SOD1 mutants.

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Crossref · 10.1038/nn1603

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  • Protein aggregates released into extracellular space together with DAMPs from damaged neurons induce microglia activation and proinflammatory cytokine releasing.

    “Protein aggregates released into the extracellular space together with DAMPs released from damaged neurons induce microglia activation and proinflammatory cytokines releasing.20,83,84”

    From Role of neuroinflammation in neurodegeneration development (2023) · cites this paper as [84]

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Authors
Urushitani, M., Sik, A., Sakurai, T., Nukina, N., Takahashi, R., & Julien, J.-P.
Affiliations
  • Centre hospitalier de l'Université Laval (CA)
  • Université Laval (CA)
  • RIKEN Center for Brain Science (JP)
Corresponding author
Julien, Jean-Pierre
Venue
Nature Neuroscience
Published
2005-12-20
Volume
9
Issue
1
Pages
108-118
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2034651824
Cited by
419
References
47
Citations by year
2026: 4 · 2025: 8 · 2024: 12 · 2023: 10 · 2022: 8 · 2021: 9 · 2020: 14 · 2019: 10 · 2018: 13 · 2017: 16 · 2016: 20 · 2015: 25 · 2014: 23 · 2013: 35 · 2012: 28
FWCI
15.58
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
Topics
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
Keywords
chromogranin, superoxide dismutase 1, SOD1 mutations, amyotrophic lateral sclerosis, protein secretion, neurosecretory granules, chaperone-like protein, trans-Golgi network, microglial activation, neuronal cell death, ALS pathogenesis, spinal cord
MeSH terms
Superoxide Dismutase-1, Amyotrophic Lateral Sclerosis, Animals, Astrocytes, Cells, Cultured, Chlorocebus aethiops, Chromogranins, Fluorescent Antibody Technique, Gliosis, Humans, Interneurons, Mice, Transgenic, Microsomes, Motor Neurons, Mutation, Plasmids, Spinal Cord, Subcellular Fractions, Superoxide Dismutase, Blotting, Western, Microscopy, Immunoelectron, 3T3 Cells, Protein Folding, Molecular Chaperones, COS Cells, Immunoprecipitation, Mice, Chromogranin A, Proteasome Inhibitors

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