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Comparison of Proteomic Analysis of Cerebrospinal Fluid From Neurological Patients With and Without Amyotrophic Lateral Sclerosis
Journal article   Open access   Peer reviewed

Comparison of Proteomic Analysis of Cerebrospinal Fluid From Neurological Patients With and Without Amyotrophic Lateral Sclerosis

Eleonora Sabetta, Karin Rallmann, Pille Taba, Abigail L Pfaff, Bal Hari Poudel, Davide Ferrari, Massimo Locatelli, Sulev Kõks and Jonas Bergquist
Journal of neurochemistry, Vol.170(6), e70508
2026
DOI: https://doi.org/10.1111/jnc.70508
PMID: 42360043
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Published2.20 MBDownloadView
Open Access CC BY V4.0

Abstract

Adult Aged Amyotrophic Lateral Sclerosis - cerebrospinal fluid Amyotrophic Lateral Sclerosis - diagnosis Biomarkers - cerebrospinal fluid Cerebrospinal Fluid Proteins Chromatography, Liquid Female Humans Male Middle Aged Proteomics - methods Tandem Mass Spectrometry
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder characterised by progressive muscle weakness in both bulbar and extremity muscles, leading to a diverse clinical phenotype with motor and non-motor symptoms. Approximately 85% of ALS cases are sporadic (sALS), while the remaining 10%-15% are familial (fALS). Biological biomarkers of sporadic ALS remain poorly understood, hindering precise patient screening, delaying diagnosis and negatively affecting prognosis. This study aims to identify potential proteomic biomarkers by comparing the cerebrospinal fluid (CSF) of sALS patients with that of patients suffering from other neurological diseases. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) was used for proteomic profiling of CSF samples from 24 sALS patients and 26 patients with other neurological diseases. The complete protein expression profiles were compared using a two-tailed Student's t-test, with a p < 0.05 considered statistically significant with additional FDR correction at the 0.1 level. Proteomic analysis of CSF samples identified significant quantitative changes in 96 proteins with threshold p < 0.05 and 74 proteins with FDR < 0.1 between sALS and non-ALS patients, including alterations in proteins associated with neurodegenerative processes, such as amyloid precursor proteins and inflammatory markers. CSF proteomic analysis reveals altered inflammatory and neurodegenerative metabolic pathways, providing valuable insights into the proteomic landscape of sALS. Several dysregulated proteins were consistent with the disease mechanisms highlighted in previous studies. These findings represent a step forward in developing personalised approaches for diagnosing and managing the disease.

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UN Sustainable Development Goals (SDGs)

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