Abstract
Myelin oligodendrocyte glycoprotein (MOG) is a unique CNS-specific mammalian protein that is expressed on the surface of compact myelin and oligodendrocyte cell bodies. MOG is an accessible target for autoantibodies, associated with immune-mediated demyelination in the central nervous system. The identification of MOG reactive immunoglobulin G antibodies (MOG-IgG) helps to distinguish a subgroup of patients from multiple sclerosis and other CNS disorders, reducing the risk of clinical misdiagnosis. The development of the cell-based assays (CBA) improved the detection of clinically meaningful MOG-IgG binding to conformational MOG expressed in the cell membrane surface. In this review, we describe factors that impact on the results of CBA, such as MOG conformation, protein glycosylation, addition of fluorescent tags, serum dilution, secondary antibodies, and data interpretation.
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All data generated or analysed during this study are included in this published article.
Abbreviations
- ADEM:
-
acute disseminated encephalomyelitis
- AQP4:
-
aquaporin-4
- CBA:
-
cell-based assay
- CHO:
-
Chinese hamster ovary
- CNS:
-
central nervous system
- eGFP:
-
enhanced green fluorescent protein
- ELISA:
-
enzyme-linked immunonosorbent assay
- FACS:
-
fluorescence-activated cell sorting
- FITC:
-
fluorescein isothiocyanate
- FL-MOG:
-
full-length MOG
- GFP:
-
green fluorescent protein
- HEK293:
-
human embryonic kidney 293
- IIF:
-
indirect immunofluorescence
- IgG:
-
immunoglobulin G
- IgM:
-
immunoglobulin M
- LGI1:
-
leucine-rich glioma inactivated 1
- MFI:
-
median fluorescent intensity
- MHC:
-
major histocompatibility complex
- MOG:
-
myelin oligodendrocyte glycoprotein
- mRNA:
-
messenger ribonucleic acid
- NMOSD:
-
neuromyelitis optica spectrum disorder
- PEI:
-
polyethylenimine
- RIA:
-
radioimmunoassay
- SL-MOG:
-
short-length MOG
- WB:
-
western blot
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This review is based on research supported by the Coordenação de Aperfeiçoamento de Pessoal de Nivel Superior, Brasil (CAPES), Finance Code 001.
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AM has received a scholarship from CAPES/Brazil.
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PW and the University of Oxford hold patents and receive royalties for antibody assays. PW has received honoraria from Alexion and UBC and a research grant from Euroimmun AG.
DKS has received a scholarship from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan; a Grants-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (KAKENHI 15K19472); research support from CNPq/Brazil (425331/2016-4), FAPERGS/MS/CNPq/SESRS (17/2551-0001391-3) PPSUS/Brazil, TEVA (research grant for EMOCEMP Investigator Initiated Study), and Euroimmun AG (Neuroimmunological Complications associated with Arboviruses); and speaker honoraria from Biogen, Novartis, Genzyme, TEVA, Merck Serono, Roche, and Bayer and has participated in advisory boards for Shire, Roche, TEVA, Merck Serono, and Quest/Athena Diagnostics.
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Marchionatti, A., Woodhall, M., Waters, P.J. et al. Detection of MOG-IgG by cell-based assay: moving from discovery to clinical practice. Neurol Sci 42, 73–80 (2021). https://doi.org/10.1007/s10072-020-04828-1
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DOI: https://doi.org/10.1007/s10072-020-04828-1