Proteomics analyses for the global proteins in the brain tissues of different human prion diseases.

Abstract

Proteomics changes of brain tissues have been described in different neurodegenerative diseases including Alzheimer's disease and Parkinson's disease. However, the brain proteomics of human prion disease remains less understood. In the study, the proteomics patterns of cortex and cerebellum of brain tissues of sporadic Creutzfeldt-Jakob disease, fatal familial insomnia, and G114V genetic CJD were analyzed with isobaric tags for relative and absolute quantitation combined with multidimensional liquid chromatography and MS analysis, with the brains from three normal individuals as controls. Global protein profiling, significant pathway, and functional categories were analyzed. In total, 2287 proteins were identified with quantitative information both in cortex and cerebellum regions. Cerebellum tissues appeared to contain more up- and down-regulated proteins (727 proteins) than cortex regions (312 proteins) of Creutzfeldt-Jakob disease, fatal familial insomnia, and G114V genetic CJD. Viral myocarditis, Parkinson's disease, Alzheimer's disease, lysosome, oxidative phosphorylation, protein export, and drug metabolism-cytochrome P450 were the most commonly affected pathways of the three kinds of diseases. Almost coincident biological functions were identified in the brain tissues of the three diseases. In all, data here demonstrate that the brain tissues of Creutzfeldt-Jakob disease, fatal familial insomnia, and G114V genetic CJD have obvious proteomics changes at their terminal stages, which show the similarities not only among human prion diseases but also with other neurodegeneration diseases. This is the first study to provide a reference proteome map for human prion diseases and will be helpful for future studies focused on potential biomarkers for the diagnosis and therapy of human prion diseases.

• Authors: Qi Shi, Li-Na Chen, Bao-Yun Zhang, Kang Xiao, Wei Zhou, Cao Chen, Xiao-Mei Zhang, Chan Tian, Chen Gao, Jing Wang, Jun Han, Xiao-Ping Dong
• Journal: Molecular & cellular proteomics : MCP (Mol Cell Proteomics) Vol. 14 Issue 4 Pg. 854-69 (Apr 2015) ISSN: 1535-9484 [Electronic] United States
• PMID: 25616867 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: © 2015 by The American Society for Biochemistry and Molecular Biology, Inc.

Chemical References

• Proteome

Topics

• Adult
• Aged, 80 and over
• Brain (metabolism, pathology)
• Cerebellum (metabolism, pathology)
• Cerebral Cortex (metabolism, pathology)
• Cluster Analysis
• Female
• Humans
• Male
• Middle Aged
• Prion Diseases (metabolism)
• Proteome (metabolism)
• Proteomics (methods)