Cited by 92Alzheimer's disease research and treatmentsRedox biology and oxidative stressNitric Oxide and Endothelin Effects

Differential S-nitrosylation of proteins in Alzheimer’s disease

Zahid, S., Khan, R., Oellerich, M., Ahmed, N., Asif, A.R.·2014·Neuroscience

Abstract

Numerous studies have provided evidence regarding the involvement of protein S-nitrosylation in the progression of Alzheimer's disease (AD) pathology and its implication in the formation and accumulation of misfolded protein aggregates. The identification of S-nitrosylated proteins can be a major step toward the understanding of mechanisms leading to neuronal degeneration. The present study targeted S-nitrosylated proteins in AD hippocampus, substantia nigra and cortex using the following work-flow that combines S-nitrosothiol-specific antibody detection, classical biotin switch method labeled with fluorescence dye followed by electrospray ionization quadrupole time of flight tandem MS (ESI-QTOF MS/MS) identification. Endogenous nitrosocysteines were identified in 45 proteins, mainly involved in metabolism, signaling pathways, apoptosis and redox regulation as assigned by REACTOME and KEGG pathway database analysis. Superoxide dismutase (SOD2) [Mn], fructose-bisphosphate aldolase C (ALDOC) and voltage-dependent anion-selective channel protein 2 (VDAC2) showed differential S-nitrosylation signal, not previously reported in AD regions. Extensive neuronal atrophy with increased protein S-nitrosylation in AD regions is also evident from immunofluorescence studies using S-nitrosocysteine antibody. A number of plausible cysteine modification sites were predicted via Group-based Prediction System-S-nitrosothiols (GPS-SNO) 1.0 while STRING 8.3 analysis revealed functional annotations in the modified proteins. The findings are helpful in characterization of functional abnormalities and may facilitate the understanding of molecular mechanisms and biological function of S-nitrosylation in AD pathology.

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Crossref · 10.1016/j.neuroscience.2013.10.026

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  • Selected studies of the S-nitrosylation proteome in AD identified key proteins with altered functions associated with antioxidant, glycolysis, mitochondrial export, calcium homeostasis, synapses, apoptosis, mitochondrial dynamics, protein folding, and neuroinflammation.

    “Selected studies of the S-nitrosylation proteome in AD identified key proteins with altered functions associated with antioxidant, glycolysis, mitochondrial export, calcium homeostasis, synapses, apoptosis, mitochondrial dynamics, protein folding, and neuroinflammation, among other functions [113,114,115,116].”

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Authors
Zahid, S., Khan, R., Oellerich, M., Ahmed, N., & Asif, A. R.
Affiliations
  • University of Karachi (PK)
  • Universitätsmedizin Göttingen (DE)
Venue
Neuroscience
Publisher
Elsevier BV
Published
2014-01
Volume
256
Pages
126-136
ISSN
0306-4522 (ISSN-L)
OpenAlex
W2015385404
Cited by
91
References
50
Citations by year
2026: 1 · 2025: 1 · 2024: 11 · 2023: 2 · 2022: 7 · 2021: 8 · 2020: 10 · 2019: 8 · 2018: 10 · 2017: 6 · 2016: 13 · 2015: 6 · 2014: 7 · 2013: 1
FWCI
6.23
Type
journal article
Language
en
Open access
closed
Locations
  • Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • GRO (submittedVersion)
Funders
International Research Support Initiative Program (IRSIP) (20-560/ R&D/07)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
Keywords
S-nitrosylation, Alzheimer's disease, S-nitrosothiols, S-nitrosocysteine, hippocampus, substantia nigra, cerebral cortex, manganese superoxide dismutase, VDAC2, neuronal atrophy, protein misfolding, redox regulation, apoptosis
MeSH terms
Superoxide Dismutase 2, Aged, Alzheimer Disease, Biotin, Brain, Cysteine, Female, Fructose-Bisphosphate Aldolase, Humans, Male, Superoxide Dismutase, Electrophoresis, Gel, Two-Dimensional, Case-Control Studies, S-Nitrosothiols, Proteomics, Voltage-Dependent Anion Channel 2, Tandem Mass Spectrometry

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