Contemporary insights into neuroimmune interactions across development and aging

Initially considered distinct systems with independent physiological functions, recent evidence highlights the crucial role of active crosstalk between the nervous and immune systems in regulating critical physiological and neurological processes and immunological homeostasis. The identification of...

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Main Authors: Xin Yi Yeo, Yunseon Choi, Yeonhee Hong, Hyuk Nam Kwon, Sangyong Jung
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-07-01
Series:Frontiers in Neurology
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Online Access:https://www.frontiersin.org/articles/10.3389/fneur.2025.1611124/full
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author Xin Yi Yeo
Yunseon Choi
Yeonhee Hong
Hyuk Nam Kwon
Hyuk Nam Kwon
Sangyong Jung
author_facet Xin Yi Yeo
Yunseon Choi
Yeonhee Hong
Hyuk Nam Kwon
Hyuk Nam Kwon
Sangyong Jung
author_sort Xin Yi Yeo
collection DOAJ
description Initially considered distinct systems with independent physiological functions, recent evidence highlights the crucial role of active crosstalk between the nervous and immune systems in regulating critical physiological and neurological processes and immunological homeostasis. The identification of a direct body-brain circuitry allowing the monitoring of peripheral inflammatory responses, a unique skull bone marrow source of immune cells to the central nervous system (CNS), and the physical interface of the blood-brain barrier with the meningeal system suggest direct intersystem interactions, which can be further modulated by the local tissue environment, allowing non-neurological factors to influence neurological outcomes and vice versa. While there is a recognized age-dependent decline in both neurological and immune system function, in part due to the natural accumulation of cellular defects and the development of chronic systemic inflammation, it is unclear if the pre-existing bidirectional feedback mechanisms between the neurological and peripheral immune system plays a role in shaping the system decline, beyond commonly investigated pathological conditions. In this review, we will explore the effect of aging on the bidirectional communication between the neurological and immunological systems and attempt to understand how the inevitable age-dependent alterations of the interaction may concurrently drive immunosenescence, normal neurological decline, and neuropathological progression.
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spelling doaj-art-e9c6efcc569f43e686bf01d5203367532025-08-20T03:55:48ZengFrontiers Media S.A.Frontiers in Neurology1664-22952025-07-011610.3389/fneur.2025.16111241611124Contemporary insights into neuroimmune interactions across development and agingXin Yi Yeo0Yunseon Choi1Yeonhee Hong2Hyuk Nam Kwon3Hyuk Nam Kwon4Sangyong Jung5Department of Medical Science, CHA University, Seongnam, Republic of KoreaDepartment of Medical Science, CHA University, Seongnam, Republic of KoreaDepartment of Medical Science, CHA University, Seongnam, Republic of KoreaSchool of Biological Science, University of Ulsan, Ulsan, Republic of KoreaBasic-Clinic Convergence Research Institute, University of Ulsan, Ulsan, Republic of KoreaDepartment of Medical Science, CHA University, Seongnam, Republic of KoreaInitially considered distinct systems with independent physiological functions, recent evidence highlights the crucial role of active crosstalk between the nervous and immune systems in regulating critical physiological and neurological processes and immunological homeostasis. The identification of a direct body-brain circuitry allowing the monitoring of peripheral inflammatory responses, a unique skull bone marrow source of immune cells to the central nervous system (CNS), and the physical interface of the blood-brain barrier with the meningeal system suggest direct intersystem interactions, which can be further modulated by the local tissue environment, allowing non-neurological factors to influence neurological outcomes and vice versa. While there is a recognized age-dependent decline in both neurological and immune system function, in part due to the natural accumulation of cellular defects and the development of chronic systemic inflammation, it is unclear if the pre-existing bidirectional feedback mechanisms between the neurological and peripheral immune system plays a role in shaping the system decline, beyond commonly investigated pathological conditions. In this review, we will explore the effect of aging on the bidirectional communication between the neurological and immunological systems and attempt to understand how the inevitable age-dependent alterations of the interaction may concurrently drive immunosenescence, normal neurological decline, and neuropathological progression.https://www.frontiersin.org/articles/10.3389/fneur.2025.1611124/fullagingneuroimmune crosstalkimmunosenescenceneurological declineneurodegeneration
spellingShingle Xin Yi Yeo
Yunseon Choi
Yeonhee Hong
Hyuk Nam Kwon
Hyuk Nam Kwon
Sangyong Jung
Contemporary insights into neuroimmune interactions across development and aging
Frontiers in Neurology
aging
neuroimmune crosstalk
immunosenescence
neurological decline
neurodegeneration
title Contemporary insights into neuroimmune interactions across development and aging
title_full Contemporary insights into neuroimmune interactions across development and aging
title_fullStr Contemporary insights into neuroimmune interactions across development and aging
title_full_unstemmed Contemporary insights into neuroimmune interactions across development and aging
title_short Contemporary insights into neuroimmune interactions across development and aging
title_sort contemporary insights into neuroimmune interactions across development and aging
topic aging
neuroimmune crosstalk
immunosenescence
neurological decline
neurodegeneration
url https://www.frontiersin.org/articles/10.3389/fneur.2025.1611124/full
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AT yunseonchoi contemporaryinsightsintoneuroimmuneinteractionsacrossdevelopmentandaging
AT yeonheehong contemporaryinsightsintoneuroimmuneinteractionsacrossdevelopmentandaging
AT hyuknamkwon contemporaryinsightsintoneuroimmuneinteractionsacrossdevelopmentandaging
AT hyuknamkwon contemporaryinsightsintoneuroimmuneinteractionsacrossdevelopmentandaging
AT sangyongjung contemporaryinsightsintoneuroimmuneinteractionsacrossdevelopmentandaging