Identification of cerebrospinal fluid biomarkers for parkinsonism using a proteomics approach

Abstract The aim of our study was to investigate cerebrospinal fluid (CSF) tryptic peptide profiles as potential diagnostic biomarkers for the discrimination of parkinsonian disorders. CSF samples were collected from individuals with parkinsonism, who had an uncertain diagnosis at the time of inclus...

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Autores principales: Tainá M. Marques, Anouke van Rumund, Iris Kersten, Ilona B. Bruinsma, Hans J.C.T. Wessels, Jolein Gloerich, Charlotte Kaffa, Rianne A. J. Esselink, Bastiaan R. Bloem, H. Bea Kuiperij, Marcel M. Verbeek
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Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/20d7ff2906c34b81b81ceb6c702ca96f
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spelling oai:doaj.org-article:20d7ff2906c34b81b81ceb6c702ca96f2021-12-05T12:17:23ZIdentification of cerebrospinal fluid biomarkers for parkinsonism using a proteomics approach10.1038/s41531-021-00249-92373-8057https://doaj.org/article/20d7ff2906c34b81b81ceb6c702ca96f2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41531-021-00249-9https://doaj.org/toc/2373-8057Abstract The aim of our study was to investigate cerebrospinal fluid (CSF) tryptic peptide profiles as potential diagnostic biomarkers for the discrimination of parkinsonian disorders. CSF samples were collected from individuals with parkinsonism, who had an uncertain diagnosis at the time of inclusion and who were followed for up to 12 years in a longitudinal study. We performed shotgun proteomics to identify tryptic peptides in CSF of Parkinson’s disease (PD, n = 10), multiple system atrophy patients (MSA, n = 5) and non-neurological controls (n = 10). We validated tryptic peptides with differential levels between PD and MSA using a newly developed selected reaction monitoring (SRM) assay in CSF of PD (n = 46), atypical parkinsonism patients (AP; MSA, n = 17; Progressive supranuclear palsy; n = 8) and non-neurological controls (n = 39). We identified 191 tryptic peptides that differed significantly between PD and MSA, of which 34 met our criteria for SRM development. For 14/34 peptides we confirmed differences between PD and AP. These tryptic peptides discriminated PD from AP with moderate-to-high accuracy. Random forest modelling including tryptic peptides plus either clinical assessments or other CSF parameters (neurofilament light chain, phosphorylated tau protein) and age improved the discrimination of PD vs. AP. Our results show that the discovery of tryptic peptides by untargeted and subsequent validation by targeted proteomics is a suitable strategy to identify potential CSF biomarkers for PD versus AP. Furthermore, the tryptic peptides, and corresponding proteins, that we identified as differential biomarkers may increase our current knowledge about the disease-specific pathophysiological mechanisms of parkinsonism.Tainá M. MarquesAnouke van RumundIris KerstenIlona B. BruinsmaHans J.C.T. WesselsJolein GloerichCharlotte KaffaRianne A. J. EsselinkBastiaan R. BloemH. Bea KuiperijMarcel M. VerbeekNature PortfolioarticleNeurology. Diseases of the nervous systemRC346-429ENnpj Parkinson's Disease, Vol 7, Iss 1, Pp 1-11 (2021)
institution DOAJ
collection DOAJ
language EN
topic Neurology. Diseases of the nervous system
RC346-429
spellingShingle Neurology. Diseases of the nervous system
RC346-429
Tainá M. Marques
Anouke van Rumund
Iris Kersten
Ilona B. Bruinsma
Hans J.C.T. Wessels
Jolein Gloerich
Charlotte Kaffa
Rianne A. J. Esselink
Bastiaan R. Bloem
H. Bea Kuiperij
Marcel M. Verbeek
Identification of cerebrospinal fluid biomarkers for parkinsonism using a proteomics approach
description Abstract The aim of our study was to investigate cerebrospinal fluid (CSF) tryptic peptide profiles as potential diagnostic biomarkers for the discrimination of parkinsonian disorders. CSF samples were collected from individuals with parkinsonism, who had an uncertain diagnosis at the time of inclusion and who were followed for up to 12 years in a longitudinal study. We performed shotgun proteomics to identify tryptic peptides in CSF of Parkinson’s disease (PD, n = 10), multiple system atrophy patients (MSA, n = 5) and non-neurological controls (n = 10). We validated tryptic peptides with differential levels between PD and MSA using a newly developed selected reaction monitoring (SRM) assay in CSF of PD (n = 46), atypical parkinsonism patients (AP; MSA, n = 17; Progressive supranuclear palsy; n = 8) and non-neurological controls (n = 39). We identified 191 tryptic peptides that differed significantly between PD and MSA, of which 34 met our criteria for SRM development. For 14/34 peptides we confirmed differences between PD and AP. These tryptic peptides discriminated PD from AP with moderate-to-high accuracy. Random forest modelling including tryptic peptides plus either clinical assessments or other CSF parameters (neurofilament light chain, phosphorylated tau protein) and age improved the discrimination of PD vs. AP. Our results show that the discovery of tryptic peptides by untargeted and subsequent validation by targeted proteomics is a suitable strategy to identify potential CSF biomarkers for PD versus AP. Furthermore, the tryptic peptides, and corresponding proteins, that we identified as differential biomarkers may increase our current knowledge about the disease-specific pathophysiological mechanisms of parkinsonism.
format article
author Tainá M. Marques
Anouke van Rumund
Iris Kersten
Ilona B. Bruinsma
Hans J.C.T. Wessels
Jolein Gloerich
Charlotte Kaffa
Rianne A. J. Esselink
Bastiaan R. Bloem
H. Bea Kuiperij
Marcel M. Verbeek
author_facet Tainá M. Marques
Anouke van Rumund
Iris Kersten
Ilona B. Bruinsma
Hans J.C.T. Wessels
Jolein Gloerich
Charlotte Kaffa
Rianne A. J. Esselink
Bastiaan R. Bloem
H. Bea Kuiperij
Marcel M. Verbeek
author_sort Tainá M. Marques
title Identification of cerebrospinal fluid biomarkers for parkinsonism using a proteomics approach
title_short Identification of cerebrospinal fluid biomarkers for parkinsonism using a proteomics approach
title_full Identification of cerebrospinal fluid biomarkers for parkinsonism using a proteomics approach
title_fullStr Identification of cerebrospinal fluid biomarkers for parkinsonism using a proteomics approach
title_full_unstemmed Identification of cerebrospinal fluid biomarkers for parkinsonism using a proteomics approach
title_sort identification of cerebrospinal fluid biomarkers for parkinsonism using a proteomics approach
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/20d7ff2906c34b81b81ceb6c702ca96f
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