Cited by 55Neuroinflammation and Neurodegeneration MechanismsParkinson's Disease Mechanisms and TreatmentsNuclear Receptors and Signaling

Proteomic analysis of microglial contribution to mouse strain-dependent dopaminergic neurotoxicity

McLaughlin, Patrick, Zhou, Yong, Ma, Tracy, Liu, Jun, Zhang, Wei, Hong, Jau‐Shyong, Kovacs, Monika, Zhang, Jing·2006·Glia

Abstract

Although the pathogenesis of Parkinson's disease (PD) remains unknown, it appears that microglial activation is associated with enhanced neurodegeneration in animal models of PD as well as in PD patients. Experimentally, C57BL/6 and SWR/J mice demonstrate striking differences in the extent of dopaminergic (DAergic) neurodegeneration induced by a parkinsonian toxicant 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). The purpose of this study was to determine whether differences in microglial activation between these two strains of mice could provide insight into the variability seen in toxicant induced neuronal death, and subsequently to use a high-throughput proteomic method, combining stable isotope labeling with amino acids in cell culture (SILAC) with liquid chromatography and tandem mass spectrometry, to compare the microglial proteomes of C57BL/6 and SWR/J mice after stimulation with a classical microglial activator, lipopolysaccharide (LPS). We found that DAergic neurotoxicity induced by LPS in a primary neuron-microglia coculture was twofold greater with microglia isolated from the brains of C57BL/6 mice compared with that of SWR/J mice. Upon proteomic analysis we found that, out of over 1,000 proteins identified and quantified, 400 displayed a significant difference in their relative abundance between these two murine strains. Several proteins, which had relatively higher levels in C57BL/6 mice, have previously been implicated in LPS-mediated microglial activation, including those involved in the COX-2 pathway and in prostaglandin E-2 (PGE(2)) production. To validate our proteomic results we confirmed the increased expression level of iNOS in C57BL/6 vs. SWR/J microglia with semiquantitative Western blot. Further analysis of our proteomic discovery data will likely reveal numerous novel proteins involved in inflammation-mediated neurotoxicity in PD.

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Crossref · 10.1002/glia.20294

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Authors
McLaughlin, P., Zhou, Y., Ma, T., Liu, J., Zhang, W., Hong, J., Kovacs, M., & Zhang, J.
Affiliations
  • University of Washington (US)
  • National Institutes of Health (US)
Corresponding author
Zhang, Jing
Venue
Glia
Publisher
Wiley
Published
2006-01-17
Volume
53
Issue
6
Pages
567-582
ISSN
  • 0894-1491 (ISSN-L)
  • 1098-1136
OpenAlex
W2091691893
Cited by
55
References
59
Citations by year
2025: 1 · 2024: 1 · 2022: 2 · 2018: 2 · 2017: 3 · 2016: 3 · 2015: 1 · 2014: 4 · 2013: 2 · 2012: 1
FWCI
5.88
Type
journal article
Language
en
Open access
closed
Locations
  • Glia (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Environmental Health Sciences (ES05842)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
Keywords
microglial activation, Parkinson's disease, dopaminergic neurotoxicity, MPTP, lipopolysaccharide, strain differences, C57BL/6 mice, SWR/J mice, prostaglandin E2, inducible nitric oxide synthase, neuroinflammation, neurodegeneration
MeSH terms
Animals, Cells, Cultured, Dopamine, Encephalitis, Gliosis, Lipopolysaccharides, Mice, Inbred C57BL, Nerve Degeneration, Nerve Tissue Proteins, Neurotoxins, Parkinson Disease, Species Specificity, Dinoprostone, 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine, Rats, Sprague-Dawley, Microglia, Inflammation Mediators, Coculture Techniques, Proteomics, Mice, Rats, Nitric Oxide Synthase Type II

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