4.5 Article

Bioinformatic analysis of the SPs and NFTs proteomes unravel putative biomarker candidates for Alzheimer's disease

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PROTEOMICS
卷 23, 期 15, 页码 -

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WILEY
DOI: 10.1002/pmic.202200515

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biomarkers; kinases; neurofibrillary tangles; phosphatases; senile plaques

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Aging is the main risk factor for age-related neurodegenerative diseases, such as Alzheimer's disease (AD), which is characterized by the presence of senile plaques (SPs) and neurofibrillary tangles (NFTs). This study conducted a literature review to identify the proteomes of SPs and NFTs, followed by a bioinformatic analysis and validation of potential biomarkers.
Aging is the main risk factor for the appearance of age-related neurodegenerative diseases, including Alzheimer's disease (AD). AD is the most common form of dementia, characterized by the presence of senile plaques (SPs) and neurofibrillary tangles (NFTs), the main histopathological hallmarks in AD brains. The core of these deposits are predominantly amyloid fibrils in SPs and hyperphosphorylated Tau protein in NFTs, but other molecular components can be found associated with these pathological lesions. Herein, an extensive literature review was carried out to obtain the SPs and NFTs proteomes, followed by a bioinformatic analysis and further putative biomarker validation. For SPs, 857 proteins were recovered, and, for NFTs, 627 proteins of which 375 occur in both groups and represent the common proteome. Gene Ontology (GO) enrichment analysis permitted the identification of biological processes and the molecular functions most associated with these lesions. Analysis of the SPs and NFTs common proteins unraveled pathways and molecular targets linking both histopathological events. Further, validation of a putative phosphotarget arising from the in silico analysis was performed in serum-derived extracellular vesicles from AD patients. This bioinformatic approach contributed to the identification of putative molecular targets, valuable for AD diagnostic or therapeutic intervention.

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