Molecular mechanisms underlying microglial sensing and phagocytosis in synaptic pruning

Microglia are the main non-neuronal cells in the central nervous system that have important roles in brain development and functional connectivity of neural circuits. In brain physiology, highly dynamic microglial processes are facilitated to sense the surrounding environment and stimuli. Once the b...

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Main Authors: Anran Huo, Jiali Wang, Qi Li, Mengqi Li, Yuwan Qi, Qiao Yin, Weifeng Luo, Jijun Shi, Qifei Cong
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2024-01-01
Series:Neural Regeneration Research
Subjects:
Online Access:http://www.nrronline.org/article.asp?issn=1673-5374;year=2024;volume=19;issue=6;spage=1284;epage=1290;aulast=Huo
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author Anran Huo
Jiali Wang
Qi Li
Mengqi Li
Yuwan Qi
Qiao Yin
Weifeng Luo
Jijun Shi
Qifei Cong
author_facet Anran Huo
Jiali Wang
Qi Li
Mengqi Li
Yuwan Qi
Qiao Yin
Weifeng Luo
Jijun Shi
Qifei Cong
author_sort Anran Huo
collection DOAJ
description Microglia are the main non-neuronal cells in the central nervous system that have important roles in brain development and functional connectivity of neural circuits. In brain physiology, highly dynamic microglial processes are facilitated to sense the surrounding environment and stimuli. Once the brain switches its functional states, microglia are recruited to specific sites to exert their immune functions, including the release of cytokines and phagocytosis of cellular debris. The crosstalk of microglia between neurons, neural stem cells, endothelial cells, oligodendrocytes, and astrocytes contributes to their functions in synapse pruning, neurogenesis, vascularization, myelination, and blood-brain barrier permeability. In this review, we highlight the neuron-derived “find-me,” “eat-me,” and “don’t eat-me” molecular signals that drive microglia in response to changes in neuronal activity for synapse refinement during brain development. This review reveals the molecular mechanism of neuron-microglia interaction in synaptic pruning and presents novel ideas for the synaptic pruning of microglia in disease, thereby providing important clues for discovery of target drugs and development of nervous system disease treatment methods targeting synaptic dysfunction.
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spelling doaj.art-3f189a507e7e499a85180368e207384b2024-04-01T13:05:59ZengWolters Kluwer Medknow PublicationsNeural Regeneration Research1673-53742024-01-011961284129010.4103/1673-5374.385854Molecular mechanisms underlying microglial sensing and phagocytosis in synaptic pruningAnran HuoJiali WangQi LiMengqi LiYuwan QiQiao YinWeifeng LuoJijun ShiQifei CongMicroglia are the main non-neuronal cells in the central nervous system that have important roles in brain development and functional connectivity of neural circuits. In brain physiology, highly dynamic microglial processes are facilitated to sense the surrounding environment and stimuli. Once the brain switches its functional states, microglia are recruited to specific sites to exert their immune functions, including the release of cytokines and phagocytosis of cellular debris. The crosstalk of microglia between neurons, neural stem cells, endothelial cells, oligodendrocytes, and astrocytes contributes to their functions in synapse pruning, neurogenesis, vascularization, myelination, and blood-brain barrier permeability. In this review, we highlight the neuron-derived “find-me,” “eat-me,” and “don’t eat-me” molecular signals that drive microglia in response to changes in neuronal activity for synapse refinement during brain development. This review reveals the molecular mechanism of neuron-microglia interaction in synaptic pruning and presents novel ideas for the synaptic pruning of microglia in disease, thereby providing important clues for discovery of target drugs and development of nervous system disease treatment methods targeting synaptic dysfunction.http://www.nrronline.org/article.asp?issn=1673-5374;year=2024;volume=19;issue=6;spage=1284;epage=1290;aulast=Huocomplement; immune signals; microglia; molecular signal; synapse elimination; synapse formation; synapse refinement; synaptic pruning
spellingShingle Anran Huo
Jiali Wang
Qi Li
Mengqi Li
Yuwan Qi
Qiao Yin
Weifeng Luo
Jijun Shi
Qifei Cong
Molecular mechanisms underlying microglial sensing and phagocytosis in synaptic pruning
Neural Regeneration Research
complement; immune signals; microglia; molecular signal; synapse elimination; synapse formation; synapse refinement; synaptic pruning
title Molecular mechanisms underlying microglial sensing and phagocytosis in synaptic pruning
title_full Molecular mechanisms underlying microglial sensing and phagocytosis in synaptic pruning
title_fullStr Molecular mechanisms underlying microglial sensing and phagocytosis in synaptic pruning
title_full_unstemmed Molecular mechanisms underlying microglial sensing and phagocytosis in synaptic pruning
title_short Molecular mechanisms underlying microglial sensing and phagocytosis in synaptic pruning
title_sort molecular mechanisms underlying microglial sensing and phagocytosis in synaptic pruning
topic complement; immune signals; microglia; molecular signal; synapse elimination; synapse formation; synapse refinement; synaptic pruning
url http://www.nrronline.org/article.asp?issn=1673-5374;year=2024;volume=19;issue=6;spage=1284;epage=1290;aulast=Huo
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