Free complement and complement containing extracellular vesicles as potential biomarkers for neuroinflammatory and neurodegenerative disorders

The complement system is implicated in a broad range of neuroinflammatory disorders such as Alzheimer’s disease (AD) and multiple sclerosis (MS). Consequently, measuring complement levels in biofluids could serve as a potential biomarker for these diseases. Indeed, complement levels are shown to be...

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Main Authors: Marlies Burgelman, Pieter Dujardin, Charysse Vandendriessche, Roosmarijn E. Vandenbroucke
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-01-01
Series:Frontiers in Immunology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fimmu.2022.1055050/full
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author Marlies Burgelman
Marlies Burgelman
Pieter Dujardin
Pieter Dujardin
Charysse Vandendriessche
Charysse Vandendriessche
Roosmarijn E. Vandenbroucke
Roosmarijn E. Vandenbroucke
author_facet Marlies Burgelman
Marlies Burgelman
Pieter Dujardin
Pieter Dujardin
Charysse Vandendriessche
Charysse Vandendriessche
Roosmarijn E. Vandenbroucke
Roosmarijn E. Vandenbroucke
author_sort Marlies Burgelman
collection DOAJ
description The complement system is implicated in a broad range of neuroinflammatory disorders such as Alzheimer’s disease (AD) and multiple sclerosis (MS). Consequently, measuring complement levels in biofluids could serve as a potential biomarker for these diseases. Indeed, complement levels are shown to be altered in patients compared to controls, and some studies reported a correlation between the level of free complement in biofluids and disease progression, severity or the response to therapeutics. Overall, they are not (yet) suitable as a diagnostic tool due to heterogeneity of reported results. Moreover, measurement of free complement proteins has the disadvantage that information on their origin is lost, which might be of value in a multi-parameter approach for disease prediction and stratification. In light of this, extracellular vesicles (EVs) could provide a platform to improve the diagnostic power of complement proteins. EVs are nanosized double membrane particles that are secreted by essentially every cell type and resemble the (status of the) cell of origin. Interestingly, EVs can contain complement proteins, while the cellular origin can still be determined by the presence of EV surface markers. In this review, we summarize the current knowledge and future opportunities on the use of free and EV-associated complement proteins as biomarkers for neuroinflammatory and neurodegenerative disorders.
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spelling doaj.art-be7d7f6ab3fa45dab8ef45ef27a479492023-01-20T11:10:20ZengFrontiers Media S.A.Frontiers in Immunology1664-32242023-01-011310.3389/fimmu.2022.10550501055050Free complement and complement containing extracellular vesicles as potential biomarkers for neuroinflammatory and neurodegenerative disordersMarlies Burgelman0Marlies Burgelman1Pieter Dujardin2Pieter Dujardin3Charysse Vandendriessche4Charysse Vandendriessche5Roosmarijn E. Vandenbroucke6Roosmarijn E. Vandenbroucke7VIB Center for Inflammation Research, VIB, Ghent, BelgiumDepartment of Biomedical Molecular Biology, Ghent University, Ghent, BelgiumVIB Center for Inflammation Research, VIB, Ghent, BelgiumDepartment of Biomedical Molecular Biology, Ghent University, Ghent, BelgiumVIB Center for Inflammation Research, VIB, Ghent, BelgiumDepartment of Biomedical Molecular Biology, Ghent University, Ghent, BelgiumVIB Center for Inflammation Research, VIB, Ghent, BelgiumDepartment of Biomedical Molecular Biology, Ghent University, Ghent, BelgiumThe complement system is implicated in a broad range of neuroinflammatory disorders such as Alzheimer’s disease (AD) and multiple sclerosis (MS). Consequently, measuring complement levels in biofluids could serve as a potential biomarker for these diseases. Indeed, complement levels are shown to be altered in patients compared to controls, and some studies reported a correlation between the level of free complement in biofluids and disease progression, severity or the response to therapeutics. Overall, they are not (yet) suitable as a diagnostic tool due to heterogeneity of reported results. Moreover, measurement of free complement proteins has the disadvantage that information on their origin is lost, which might be of value in a multi-parameter approach for disease prediction and stratification. In light of this, extracellular vesicles (EVs) could provide a platform to improve the diagnostic power of complement proteins. EVs are nanosized double membrane particles that are secreted by essentially every cell type and resemble the (status of the) cell of origin. Interestingly, EVs can contain complement proteins, while the cellular origin can still be determined by the presence of EV surface markers. In this review, we summarize the current knowledge and future opportunities on the use of free and EV-associated complement proteins as biomarkers for neuroinflammatory and neurodegenerative disorders.https://www.frontiersin.org/articles/10.3389/fimmu.2022.1055050/fullcomplementextracellular vesicle (EV)biomarkerneuroinflammationAlzheimer’s diseasemultiple sclerosis
spellingShingle Marlies Burgelman
Marlies Burgelman
Pieter Dujardin
Pieter Dujardin
Charysse Vandendriessche
Charysse Vandendriessche
Roosmarijn E. Vandenbroucke
Roosmarijn E. Vandenbroucke
Free complement and complement containing extracellular vesicles as potential biomarkers for neuroinflammatory and neurodegenerative disorders
Frontiers in Immunology
complement
extracellular vesicle (EV)
biomarker
neuroinflammation
Alzheimer’s disease
multiple sclerosis
title Free complement and complement containing extracellular vesicles as potential biomarkers for neuroinflammatory and neurodegenerative disorders
title_full Free complement and complement containing extracellular vesicles as potential biomarkers for neuroinflammatory and neurodegenerative disorders
title_fullStr Free complement and complement containing extracellular vesicles as potential biomarkers for neuroinflammatory and neurodegenerative disorders
title_full_unstemmed Free complement and complement containing extracellular vesicles as potential biomarkers for neuroinflammatory and neurodegenerative disorders
title_short Free complement and complement containing extracellular vesicles as potential biomarkers for neuroinflammatory and neurodegenerative disorders
title_sort free complement and complement containing extracellular vesicles as potential biomarkers for neuroinflammatory and neurodegenerative disorders
topic complement
extracellular vesicle (EV)
biomarker
neuroinflammation
Alzheimer’s disease
multiple sclerosis
url https://www.frontiersin.org/articles/10.3389/fimmu.2022.1055050/full
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