CSF chitinase 3-like 2 is associated with disability progression in patients with progressive multiple sclerosis
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ABSTRACT: Background: We aimed to identify long-term prognostic protein biomarkers associated with disease progression in patients with progressive multiple sclerosis (MS). Methods: Cerebrospinal fluid (CSF) samples were obtained from a discovery cohort of 28 patients with progressive MS who participated in a placebo-controlled clinical trial with interferon-beta. Patients were classified into high and low disability progression phenotypes according to numeric and step-based progression rates. Protein abundance was measured by shotgun proteomics using liquid chromatographic and mass spectrometric analysis. Selected proteins from the discovery cohort were quantified by parallel reaction monitoring in CSF samples from an independent validation cohort of 41 patients with progressive MS classified also into high and low disability progression phenotypes. Results: Out of 1582548 CSF proteins identified in the discovery cohort, ten proteins were selected for validation based on the number of significant differences observed in the progression rates between patients with high and low disability progression: SPATS2-like protein (SPATS2L), Chitinase 3-like 2 (CHI3L2), plasma serine protease inhibitor (SERPINA5), Metallothionein-3 (MT3), Phospholipase D4 (PLD4), Beta-hexosaminidase (HEXB), Neurexophilin-1 (NXPH1), Adipocyte enhancer-binding protein 1 (AEBP1), Cathepsin L1 (CTSL), and Lipopolysaccharide-binding protein (LBP). Only CHI3L2 was validated, exhibiting significantly higher CSF protein levels and CSF protein levels were significantly higher in patients with high disability progression compared to patients with low disability progression. CSF CHI3L2 levels showed good performance to discriminate between progressive MS patients with high and low disability progression. Conclusions: Although further confirmatory studies are needed, we propose CSF CHI3L2 as a prognostic protein biomarker associated with disability progression in progressive MS patients.
INSTRUMENT(S): Orbitrap Fusion Lumos
ORGANISM(S): Homo Sapiens (human)
TISSUE(S): Cerebrospinal Fluid
DISEASE(S): Multiple Sclerosis
SUBMITTER: Eva Borràs
LAB HEAD: Eduard Sabido
PROVIDER: PXD022958 | Pride | 2021-11-03
REPOSITORIES: Pride
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