Th17 cells and inflammation in neurological disorders: Possible mechanisms of action

Neurological disorders (NDs) are one of the leading causes of global death. A sustained neuroinflammatory response has been reported to be associated with the pathogenesis of multiple NDs, including Parkinson’s disease (PD), multiple sclerosis (MS), Alzheimer’s disease (AD), amyotrophic lateral scle...

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Main Authors: Yajun Shi, Bin Wei, Lingjun Li, Bin Wang, Miao Sun
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-07-01
Series:Frontiers in Immunology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fimmu.2022.932152/full
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author Yajun Shi
Bin Wei
Lingjun Li
Bin Wang
Miao Sun
author_facet Yajun Shi
Bin Wei
Lingjun Li
Bin Wang
Miao Sun
author_sort Yajun Shi
collection DOAJ
description Neurological disorders (NDs) are one of the leading causes of global death. A sustained neuroinflammatory response has been reported to be associated with the pathogenesis of multiple NDs, including Parkinson’s disease (PD), multiple sclerosis (MS), Alzheimer’s disease (AD), amyotrophic lateral sclerosis (ALS), and major depressive disorder (MDD). Accumulating evidence shows that the recruitment of abundant lymphocytes in the central nervous system may contribute to promoting the development and progress of inflammation in neurological disorders. As one subset of T lymphocytes, CD4+ T cells have a critical impact on the inflammation of neurological disorders. T helper (Th) 17 is one of the most studied CD4+ Th subpopulations that produces cytokines (e.g., IL-17A, IL-23, IL-21, IL-6, and IFN-γ), leading to the abnormal neuroinflammatory response including the excessive activation of microglia and the recruitment of other immune cell types. All these factors are involved in several neurological disorders. However, the possible mechanisms of Th17 cells and their associated cytokines in the immunopathology of the abovementioned neurological disorders have not been clarified completely. This review will summarize the mechanisms by which encephalitogenic inflammatory Th17 cells and their related cytokines strongly contribute to chronic neuroinflammation, thus perpetuating neurodegenerative processes in NDs. Finally, the potential therapeutic prospects of Th17 cells and their cytokines in NDs will also be discussed.
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spelling doaj.art-232051a52fcc46e883149fd7ae6a961e2022-12-22T00:45:10ZengFrontiers Media S.A.Frontiers in Immunology1664-32242022-07-011310.3389/fimmu.2022.932152932152Th17 cells and inflammation in neurological disorders: Possible mechanisms of actionYajun ShiBin WeiLingjun LiBin WangMiao SunNeurological disorders (NDs) are one of the leading causes of global death. A sustained neuroinflammatory response has been reported to be associated with the pathogenesis of multiple NDs, including Parkinson’s disease (PD), multiple sclerosis (MS), Alzheimer’s disease (AD), amyotrophic lateral sclerosis (ALS), and major depressive disorder (MDD). Accumulating evidence shows that the recruitment of abundant lymphocytes in the central nervous system may contribute to promoting the development and progress of inflammation in neurological disorders. As one subset of T lymphocytes, CD4+ T cells have a critical impact on the inflammation of neurological disorders. T helper (Th) 17 is one of the most studied CD4+ Th subpopulations that produces cytokines (e.g., IL-17A, IL-23, IL-21, IL-6, and IFN-γ), leading to the abnormal neuroinflammatory response including the excessive activation of microglia and the recruitment of other immune cell types. All these factors are involved in several neurological disorders. However, the possible mechanisms of Th17 cells and their associated cytokines in the immunopathology of the abovementioned neurological disorders have not been clarified completely. This review will summarize the mechanisms by which encephalitogenic inflammatory Th17 cells and their related cytokines strongly contribute to chronic neuroinflammation, thus perpetuating neurodegenerative processes in NDs. Finally, the potential therapeutic prospects of Th17 cells and their cytokines in NDs will also be discussed.https://www.frontiersin.org/articles/10.3389/fimmu.2022.932152/fullTh17 cellsneurological disordersIL-17Aneuroinflammationimmune systemmicroglia
spellingShingle Yajun Shi
Bin Wei
Lingjun Li
Bin Wang
Miao Sun
Th17 cells and inflammation in neurological disorders: Possible mechanisms of action
Frontiers in Immunology
Th17 cells
neurological disorders
IL-17A
neuroinflammation
immune system
microglia
title Th17 cells and inflammation in neurological disorders: Possible mechanisms of action
title_full Th17 cells and inflammation in neurological disorders: Possible mechanisms of action
title_fullStr Th17 cells and inflammation in neurological disorders: Possible mechanisms of action
title_full_unstemmed Th17 cells and inflammation in neurological disorders: Possible mechanisms of action
title_short Th17 cells and inflammation in neurological disorders: Possible mechanisms of action
title_sort th17 cells and inflammation in neurological disorders possible mechanisms of action
topic Th17 cells
neurological disorders
IL-17A
neuroinflammation
immune system
microglia
url https://www.frontiersin.org/articles/10.3389/fimmu.2022.932152/full
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