Dl-3-n-Butylphthalide Exerts Dopaminergic Neuroprotection Through Inhibition of Neuroinflammation

Microglia-mediated neuroinflammation contributes to multiple neurodegenerative disorders, including PD. Therefore, the regulation of microglial activation probably has the therapeutic potential. This study is aimed to determine whether NBP could suppress microglial activation and protect dopaminergi...

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Main Authors: Yajing Chen, Tingting Wu, Heng Li, Xuan Li, Qing Li, Xiaoying Zhu, Mei Yu, Sheng-Han Kuo, Fang Huang, Yun-Cheng Wu
Format: Article
Language:English
Published: Frontiers Media S.A. 2019-02-01
Series:Frontiers in Aging Neuroscience
Subjects:
Online Access:https://www.frontiersin.org/article/10.3389/fnagi.2019.00044/full
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author Yajing Chen
Tingting Wu
Heng Li
Xuan Li
Qing Li
Xiaoying Zhu
Mei Yu
Sheng-Han Kuo
Fang Huang
Yun-Cheng Wu
author_facet Yajing Chen
Tingting Wu
Heng Li
Xuan Li
Qing Li
Xiaoying Zhu
Mei Yu
Sheng-Han Kuo
Fang Huang
Yun-Cheng Wu
author_sort Yajing Chen
collection DOAJ
description Microglia-mediated neuroinflammation contributes to multiple neurodegenerative disorders, including PD. Therefore, the regulation of microglial activation probably has the therapeutic potential. This study is aimed to determine whether NBP could suppress microglial activation and protect dopaminergic neurons from excessive neuroinflammation. In the present study, MPTP-induced PD model was established to explore the neuroprotective and anti-inflammatory effect of NBP. We assessed motor deficits, dopaminergic neurodegeneration and microglial activation in PD mice. In vitro, the anti-inflammatory activity of NBP was confirmed by cell viability assay of SH-SY5Y cells after being treated with conditioned medium from LPS-stimulated BV-2 cells and from 1-Methyl-4-phenylpyridinium iodide (MPP+)-stimulated BV-2 cells. The expression of pro-inflammatory molecules was determined by RT-PCR, Western Blot and ELISA assay. The generation of NO and ROS were also assessed. The involvement of signaling pathways such as MAPK, NF-κB, and PI3k/Akt were further investigated by Western Blot and immunofluorescence assay. The neuroprotective effect of NBP was demonstrated in vivo as shown by the improvement of dopaminergic neurodegeneration, motor deficits and microglial activation in MPTP-induced mouse model of PD. The expression of pro-inflammatory mediators was also reduced by NBP administration. In vitro, NBP also protected dopaminergic neurons from neurotoxicity induced by activated microglia. NBP pretreatment not only reduced pro-inflammatory molecules, but also suppressed NO release and ROS generation in BV-2 cells. Further mechanism research suggested that the inactivation of MAPK, NF-κB and PI3K/Akt may involve in anti-neuroinflammation role of NBP. In conclusion, our results revealed that NBP exerted dopaminergic neuroprotection through inhibition of microglia-mediated neuroinflammation, suggesting the promising therapeutic effect of NBP for PD.
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spelling doaj.art-be106bf92bb34b22a0a337bea535a23e2022-12-22T02:01:58ZengFrontiers Media S.A.Frontiers in Aging Neuroscience1663-43652019-02-011110.3389/fnagi.2019.00044440804Dl-3-n-Butylphthalide Exerts Dopaminergic Neuroprotection Through Inhibition of NeuroinflammationYajing Chen0Tingting Wu1Heng Li2Xuan Li3Qing Li4Xiaoying Zhu5Mei Yu6Sheng-Han Kuo7Fang Huang8Yun-Cheng Wu9Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, ChinaDepartment of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, ChinaDepartment of Neurology, Jinan Central Hospital Affiliated to Shandong University, Jinan, ChinaDepartment of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, ChinaThe State Key Laboratory of Medical Neurobiology, The Institutes of Brain Science and the Collaborative Innovation Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, ChinaDepartment of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, ChinaThe State Key Laboratory of Medical Neurobiology, The Institutes of Brain Science and the Collaborative Innovation Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, ChinaDepartment of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY, United StatesThe State Key Laboratory of Medical Neurobiology, The Institutes of Brain Science and the Collaborative Innovation Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, ChinaDepartment of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, ChinaMicroglia-mediated neuroinflammation contributes to multiple neurodegenerative disorders, including PD. Therefore, the regulation of microglial activation probably has the therapeutic potential. This study is aimed to determine whether NBP could suppress microglial activation and protect dopaminergic neurons from excessive neuroinflammation. In the present study, MPTP-induced PD model was established to explore the neuroprotective and anti-inflammatory effect of NBP. We assessed motor deficits, dopaminergic neurodegeneration and microglial activation in PD mice. In vitro, the anti-inflammatory activity of NBP was confirmed by cell viability assay of SH-SY5Y cells after being treated with conditioned medium from LPS-stimulated BV-2 cells and from 1-Methyl-4-phenylpyridinium iodide (MPP+)-stimulated BV-2 cells. The expression of pro-inflammatory molecules was determined by RT-PCR, Western Blot and ELISA assay. The generation of NO and ROS were also assessed. The involvement of signaling pathways such as MAPK, NF-κB, and PI3k/Akt were further investigated by Western Blot and immunofluorescence assay. The neuroprotective effect of NBP was demonstrated in vivo as shown by the improvement of dopaminergic neurodegeneration, motor deficits and microglial activation in MPTP-induced mouse model of PD. The expression of pro-inflammatory mediators was also reduced by NBP administration. In vitro, NBP also protected dopaminergic neurons from neurotoxicity induced by activated microglia. NBP pretreatment not only reduced pro-inflammatory molecules, but also suppressed NO release and ROS generation in BV-2 cells. Further mechanism research suggested that the inactivation of MAPK, NF-κB and PI3K/Akt may involve in anti-neuroinflammation role of NBP. In conclusion, our results revealed that NBP exerted dopaminergic neuroprotection through inhibition of microglia-mediated neuroinflammation, suggesting the promising therapeutic effect of NBP for PD.https://www.frontiersin.org/article/10.3389/fnagi.2019.00044/fulldl-3-n-butylphthalideMAPKmicroglianeuroinflammationNF-κBParkinson’s disease
spellingShingle Yajing Chen
Tingting Wu
Heng Li
Xuan Li
Qing Li
Xiaoying Zhu
Mei Yu
Sheng-Han Kuo
Fang Huang
Yun-Cheng Wu
Dl-3-n-Butylphthalide Exerts Dopaminergic Neuroprotection Through Inhibition of Neuroinflammation
Frontiers in Aging Neuroscience
dl-3-n-butylphthalide
MAPK
microglia
neuroinflammation
NF-κB
Parkinson’s disease
title Dl-3-n-Butylphthalide Exerts Dopaminergic Neuroprotection Through Inhibition of Neuroinflammation
title_full Dl-3-n-Butylphthalide Exerts Dopaminergic Neuroprotection Through Inhibition of Neuroinflammation
title_fullStr Dl-3-n-Butylphthalide Exerts Dopaminergic Neuroprotection Through Inhibition of Neuroinflammation
title_full_unstemmed Dl-3-n-Butylphthalide Exerts Dopaminergic Neuroprotection Through Inhibition of Neuroinflammation
title_short Dl-3-n-Butylphthalide Exerts Dopaminergic Neuroprotection Through Inhibition of Neuroinflammation
title_sort dl 3 n butylphthalide exerts dopaminergic neuroprotection through inhibition of neuroinflammation
topic dl-3-n-butylphthalide
MAPK
microglia
neuroinflammation
NF-κB
Parkinson’s disease
url https://www.frontiersin.org/article/10.3389/fnagi.2019.00044/full
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