Exploratory proteomic analysis implicates the alternative complement cascade in primary CNS vasculitis.
Adolescent
Adult
Biopsy
Brain
/ pathology
CD55 Antigens
/ cerebrospinal fluid
CD59 Antigens
/ cerebrospinal fluid
Case-Control Studies
Cohort Studies
Complement C4b-Binding Protein
/ cerebrospinal fluid
Complement C5
/ cerebrospinal fluid
Complement C8
/ cerebrospinal fluid
Complement C9
/ cerebrospinal fluid
Complement Pathway, Alternative
Complement System Proteins
/ cerebrospinal fluid
Female
Gene Ontology
Humans
Male
Mass Spectrometry
Middle Aged
Neural Cell Adhesion Molecules
/ cerebrospinal fluid
Properdin
/ cerebrospinal fluid
Proteomics
Vasculitis, Central Nervous System
/ cerebrospinal fluid
Journal
Neurology
ISSN: 1526-632X
Titre abrégé: Neurology
Pays: United States
ID NLM: 0401060
Informations de publication
Date de publication:
30 07 2019
30 07 2019
Historique:
received:
29
07
2018
accepted:
12
03
2019
pubmed:
5
7
2019
medline:
7
1
2020
entrez:
5
7
2019
Statut:
ppublish
Résumé
To identify molecular correlates of primary angiitis of the CNS (PACNS) through proteomic analysis of CSF from a biopsy-proven patient cohort. Using mass spectrometry, we quantitatively compared the CSF proteome of patients with biopsy-proven PACNS (n = 8) to CSF from individuals with noninflammatory conditions (n = 11). Significantly enriched molecular pathways were identified with a gene ontology workflow, and high confidence hits within enriched pathways (fold change >1.5 and concordant Benjamini-Hochberg-adjusted Compared to noninflammatory controls, 283 proteins were differentially expressed in the CSF of patients with PACNS, with significant enrichment of the complement cascade pathway (C4-binding protein, CD55, CD59, properdin, complement C5, complement C8, and complement C9) and neural cell adhesion molecules. A subset of clinically relevant findings were validated by Western blot and commercial ELISA. In this exploratory study, we found evidence of deregulation of the alternative complement cascade in CSF from biopsy-proven PACNS compared to noninflammatory controls. More specifically, several regulators of the C3 and C5 convertases and components of the terminal cascade were significantly altered. These preliminary findings shed light on a previously unappreciated similarity between PACNS and systemic vasculitides, especially anti-neutrophil cytoplasmic antibody-associated vasculitis. The therapeutic implications of this common biology and the diagnostic and therapeutic utility of individual proteomic findings warrant validation in larger cohorts.
Identifiants
pubmed: 31270218
pii: WNL.0000000000007850
doi: 10.1212/WNL.0000000000007850
pmc: PMC6693432
doi:
Substances chimiques
CD55 Antigens
0
CD59 Antigens
0
Complement C4b-Binding Protein
0
Complement C5
0
Complement C8
0
Complement C9
0
Neural Cell Adhesion Molecules
0
CD59 protein, human
101754-01-2
Properdin
11016-39-0
Complement System Proteins
9007-36-7
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e433-e444Subventions
Organisme : NINDS NIH HHS
ID : K08 NS096117
Pays : United States
Organisme : NIAID NIH HHS
ID : T32 AI060537
Pays : United States
Informations de copyright
© 2019 American Academy of Neurology.
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