High-throughput epitope profiling of antibodies in the plasma of Alzheimer’s disease patients using random peptide microarrays

The symptoms of Alzheimer’s disease (AD), a major cause of dementia in older adults, are linked directly with neuronal cell death, which is thought to be due to aberrant neuronal inflammation. Autoantibodies formed during neuronal inflammation show excellent stability in blood; therefore, they may b...

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Veröffentlicht in:Scientific reports 2019-03, Vol.9 (1), p.4587-4587, Article 4587
Hauptverfasser: Sim, Kyu-Young, Park, Sang-Heon, Choi, Kyu Yeong, Park, Jung Eun, Lee, Jung Sup, Kim, Byeong C., Gwak, Jeonghwan, Song, Woo Keun, Lee, Kun Ho, Park, Sung-Gyoo
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container_title Scientific reports
container_volume 9
creator Sim, Kyu-Young
Park, Sang-Heon
Choi, Kyu Yeong
Park, Jung Eun
Lee, Jung Sup
Kim, Byeong C.
Gwak, Jeonghwan
Song, Woo Keun
Lee, Kun Ho
Park, Sung-Gyoo
description The symptoms of Alzheimer’s disease (AD), a major cause of dementia in older adults, are linked directly with neuronal cell death, which is thought to be due to aberrant neuronal inflammation. Autoantibodies formed during neuronal inflammation show excellent stability in blood; therefore, they may be convenient blood-based diagnostic markers of AD. Here, we performed microarray analysis of 29,240 unbiased random peptides to be used for comprehensive screening of AD-specific IgG and IgM antibodies in the blood. The results showed that (1) sequence-specific and isotype-specific antibodies are regulated differentially in AD, and combinations of these antibodies showing high area under the receiver operating characteristic curve values (0.862–0.961) can be used to classify AD, (2) AD-specific IgG antibodies arise from IgM antibody-secreting cells that existed before disease onset and (3) target protein profiling of the antibodies identified some AD-related proteins, some of which are involved in AD-related signalling pathways. Therefore, we propose that these epitopes may facilitate the development of biomarkers for AD diagnosis and form the basis for a mechanistic study related to AD progression.
doi_str_mv 10.1038/s41598-019-40976-x
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subjects 14/1
45/61
631/250/256/2515
692/53/2421
96/47
Alzheimer Disease - blood
Alzheimer Disease - diagnosis
Alzheimer Disease - immunology
Alzheimer's disease
Autoantibodies
Autoantibodies - blood
Autoantibodies - immunology
Biomarkers
Blood
Cell death
Computational Biology
Dementia disorders
Epitope Mapping
Epitopes
Epitopes - immunology
Female
High-Throughput Screening Assays
Humanities and Social Sciences
Humans
Immunoglobulin G
Immunoglobulin M
Immunoglobulins
Male
multidisciplinary
Older people
Peptides
Peptides - immunology
Protein Array Analysis
ROC Curve
Science
Science (multidisciplinary)
Signal Transduction
title High-throughput epitope profiling of antibodies in the plasma of Alzheimer’s disease patients using random peptide microarrays
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