Cited by 101Alzheimer's disease research and treatmentsProteoglycans and glycosaminoglycans researchNeuroinflammation and Neurodegeneration Mechanisms

Perineuronal nets protect against amyloid β-protein neurotoxicity in cultured cortical neurons

Miyata, Seiji, Nishimura, Yousuke, Nakashima, Toshihiro·2007·Brain Research

Abstract

Perineuronal nets (PNs) consisting of chondroitin sulfate proteoglycans (CSPGs) and hyaluronic acid are associated with distinct neuronal populations in mammalian brain. Cortical areas abundant in PNs have been known to be less affected by neurotoxicity in human Alzheimer's disease. In the present study, we examined whether PNs protect the neurotoxicity caused by amyloid beta-protein (Abeta), a major constituent of senile plaques in Alzheimer's disease using cortical neurons of dissociated culture. Double labeling experiments using confocal microscopy showed that the neurons associated with PNs were visualized with the anti-CSPG antibody in dissociated cortical culture. The analysis of reverse transcription-polymerase chain reaction revealed that mRNA expression of chondroitin sulfotransferases, CSPG-specific enzymes, was detected in neuronal culture, indicating that cultured cortical neurons are able to synthesize CSPGs and construct PNs structure. The treatment of Abeta1-42 showed significant neurotoxicity on PNs-free cortical neurons, however, it did not reveal neurotoxicity on PNs-associated neurons. Moreover, it was shown that the treatment of Abeta1-42 was able to kill PNs-associated neurons after the removal of chondroitin sulfate (CS) glycosaminoglycans with chondroitinase ABC. The treatment of glutamate killed not only PNs-free cortical neurons but also PNs-associated neurons. These results suggest that CS glycosaminoglycans on PNs are responsible for protecting neurons from Abeta1-42 neurotoxicity.

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Crossref · 10.1016/j.brainres.2007.02.066

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Authors
Miyata, S., Nishimura, Y., & Nakashima, T.
Affiliations
Kyoto Institute of Technology (JP)
Corresponding author
Miyata, Seiji
Venue
Brain Research
Publisher
Elsevier BV
Published
2007-05
Volume
1150
Pages
200-206
ISSN
0006-8993 (ISSN-L)
OpenAlex
W2063629979
Cited by
101
References
39
Citations by year
2026: 3 · 2025: 4 · 2024: 8 · 2023: 9 · 2022: 11 · 2021: 8 · 2020: 9 · 2019: 6 · 2018: 9 · 2017: 4 · 2016: 3 · 2015: 6 · 2014: 2 · 2013: 2 · 2012: 2
FWCI
2.67
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Proteoglycans and glycosaminoglycans research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
perineuronal nets, amyloid-beta, neuroprotection, chondroitin sulfate proteoglycans, chondroitinase ABC, cortical neurons, Alzheimer's disease, neurotoxicity, glutamate excitotoxicity, hyaluronic acid
MeSH terms
Animals, Cells, Cultured, Cerebral Cortex, Dose-Response Relationship, Drug, Embryo, Mammalian, Hyaluronic Acid, Microtubule-Associated Proteins, Neurons, Peptide Fragments, Chondroitin Sulfate Proteoglycans, RNA, Messenger, Time Factors, Sulfotransferases, Amyloid beta-Peptides, Cell Death, Rats, Wistar, Glutamic Acid, Chondroitin ABC Lyase, Reverse Transcriptase Polymerase Chain Reaction, Rats

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