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Multiomics Profiling of Alzheimer's Disease Serum for the Identification of Autoantibody Biomarkers
Inst Salud Carlos III, Chron Dis Programme UFIEC, Majadahonda 28220, Spain.;Univ Complutense Madrid, Fac Ciencias Quim, Dept Bioquim & Biol Mol, Madrid 28040, Spain..
Inst Salud Carlos III, Chron Dis Programme UFIEC, Majadahonda 28220, Spain..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Protein Science, Affinity Proteomics. KTH, Centres, Science for Life Laboratory, SciLifeLab.ORCID iD: 0000-0002-7773-1851
Inst Salud Carlos III, Chron Dis Programme UFIEC, Majadahonda 28220, Spain..
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2021 (English)In: Journal of Proteome Research, ISSN 1535-3893, E-ISSN 1535-3907, Vol. 20, no 11, p. 5115-5130Article in journal (Refereed) Published
Abstract [en]

New biomarkers of Alzheimer's disease (AD) with a diagnostic value in preclinical and prodromal stages are urgently needed. AD-related serum autoantibodies are potential candidate biomarkers. Here, we aimed at identifying AD-related serum autoantibodies using protein microarrays and mass spectrometry-based methods. To this end, an untargeted complementary screening using high-density (42,100 antigens) and low-density (384 antigens) planar protein-epitope signature tag (PrEST) arrays and an immunoprecipitation protocol coupled to mass spectrometry analysis were used for serum autoantibody profiling. From the untargeted screening phase, 377 antigens corresponding to 338 proteins were selected for validation. Out of them, IVD, CYFIP1, and ADD2 seroreactivity was validated using 128 sera from AD patients and controls by PrEST-suspension bead arrays, and ELISA or luminescence Halotag-based bead immunoassay using full-length recombinant proteins. Importantly, IVD, CYFIP1, and ADD2 showed in combination a noticeable AD diagnostic ability. Moreover, IVD protein abundance in the prefrontal cortex was significantly two-fold higher in AD patients than in controls by western blot and immunohistochemistry, whereas CYFIP1 and ADD2 were significantly down-regulated in AD patients. The panel of AD-related autoantigens identified by a comprehensive multiomics approach may provide new insights of the disease and should help in the blood-based diagnosis of Alzheimer's disease. Mass spectrometry raw data are available in the ProteomeXchange database with the access number PXD028392.

Place, publisher, year, edition, pages
American Chemical Society (ACS) , 2021. Vol. 20, no 11, p. 5115-5130
Keywords [en]
autoantibody, PrEST, planar array, mass spectrometry, Alzheimer's disease diagnosis
National Category
Neurosciences
Identifiers
URN: urn:nbn:se:kth:diva-305363DOI: 10.1021/acs.jproteome.1c00630ISI: 000716799900018PubMedID: 34628858Scopus ID: 2-s2.0-85117470743OAI: oai:DiVA.org:kth-305363DiVA, id: diva2:1615862
Note

QC 20211201

Available from: 2021-12-01 Created: 2021-12-01 Last updated: 2022-06-25Bibliographically approved

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Jernbom-Falk, AugustPin, ElisaAndersson, EniHellström, CeciliaMånberg, AnnaNilsson, Peter

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Jernbom-Falk, AugustPin, ElisaAndersson, EniHellström, CeciliaMånberg, AnnaNilsson, Peter
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