CSF Proteomics Identifies Specific and Shared Pathways for Multiple Sclerosis Clinical Subtypes

• Published in: PloS one Vol. 10; no. 5; p. e0122045
• Main Authors: Avsar, Timucin, Durası, İlknur Melis, Uygunoğlu, Uğur, Tütüncü, Melih, Demirci, Nuri Onat, Saip, Sabahattin, Sezerman, O Uğur, Siva, Aksel, Tahir Turanlı, Eda
• Format: Journal Article
• Language: English
• Published: United States Public Library of Science 05.05.2015; Public Library of Science (PLoS)
• Subjects: Adult; Aldosterone; Angiotensin; Bioengineering; Bioinformatics; Biological variation; Brain research; Cell migration; Central nervous system; Cerebrospinal fluid; Computational Biology; Demyelination; Development and progression; Diagnosis; Disease control; Electrophoresis, Gel, Two-Dimensional; Female; Helper cells; Humans; Immunity; Lymphocytes T; Male; Mass Spectrometry; Medical diagnosis; Medicine; Middle Aged; Molecular biology; Molecular modelling; Multiple sclerosis; Multiple Sclerosis - classification; Multiple Sclerosis - metabolism; Multiple Sclerosis, Chronic Progressive - metabolism; Multiple Sclerosis, Relapsing-Remitting - metabolism; Myelination; Neurology; Notch protein; Pathophysiology; Pathways; Patients; Physiological aspects; Proteins; Proteomics; Reabsorption; Renin; Signaling; Sodium; Studies; Th17 Cells - metabolism; Vitamin D; Turkey
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0122045

Multiple sclerosis (MS) is an immune-mediated, neuro-inflammatory, demyelinating and neurodegenerative disease of the central nervous system (CNS) with a heterogeneous clinical presentation and course. There is a remarkable phenotypic heterogeneity in MS, and the molecular mechanisms underlying it remain unknown. We aimed to investigate further the etiopathogenesis related molecular pathways in subclinical types of MS using proteomic and bioinformatics approaches in cerebrospinal fluids of patients with clinically isolated syndrome, relapsing remitting MS and progressive MS (n=179). Comparison of disease groups with controls revealed a total of 151 proteins that are differentially expressed in clinically different MS subtypes. KEGG analysis using PANOGA tool revealed the disease related pathways including aldosterone-regulated sodium reabsorption (p=8.02x10-5) which is important in the immune cell migration, renin-angiotensin (p=6.88x10-5) system that induces Th17 dependent immunity, notch signaling (p=1.83x10-10) pathway indicating the activated remyelination and vitamin digestion and absorption pathways (p=1.73x10-5). An emerging theme from our studies is that whilst all MS clinical forms share common biological pathways, there are also clinical subtypes specific and pathophysiology related pathways which may have further therapeutic implications.