机构:[1]Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 101 Longmian Road, Nanjing 211166, Jiangsu, China[2]Department of Neurology & Psychology, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, 1 Fuhua Road, Shenzhen 518033, Guangdong, China深圳市康宁医院深圳市中医院深圳医学信息中心[3]Neuroprotective Drug Discovery Key Laboratory of Nanjing Medical University, 101 Longmian Road, Nanjing 211166, Jiangsu, China[4]Division of Clinical Pharmacy, Department of Pharmacy, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China江苏省人民医院[5]Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing 210023, Jiangsu, China
The accumulation of aggregated forms of the α-Synuclein (α-Syn) is associated with the pathogenesis of Parkinson's disease (PD), and the efficient clearance of aggregated α-Syn represents a potential approach in PD therapy. Astrocytes are the most numerous glia cells in the brain and play an essential role in supporting brain functions in PD state. In the present study, we demonstrated that cultured primary astrocytes engulfed and degraded extracellular aggregated recombinant human α-Syn. Meanwhile, we observed that the clearance of α-Syn by astrocytes was abolished by proteasome inhibitor MG132 and autophagy inhibitor 3-methyladenine (3MA). We further showed that intracellular α-Syn was reduced after ginkgolide B (GB) and bilobalide (BB) treatment, and the decrease was reversed by MG132 and 3MA. More importantly, GB and BB reduced indirect neurotoxicity to neurons induced by α-Syn-stimulated astrocytic conditioned medium. Together, we firstly find that astrocytes can engulf and degrade α-Syn aggregates via the proteasome and autophagy pathways, and further show that GB and BB enhance astrocytic clearance of α-Syn, which gives us an insight into the novel therapy for PD in future.
基金:
This research was supported
by the grants from the National Natural Science Foundation of China
(Grant Nos. 81673408 and 81703485).
第一作者机构:[1]Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 101 Longmian Road, Nanjing 211166, Jiangsu, China[2]Department of Neurology & Psychology, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, 1 Fuhua Road, Shenzhen 518033, Guangdong, China
共同第一作者:
通讯作者:
通讯机构:[1]Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, 101 Longmian Road, Nanjing 211166, Jiangsu, China[3]Neuroprotective Drug Discovery Key Laboratory of Nanjing Medical University, 101 Longmian Road, Nanjing 211166, Jiangsu, China[5]Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing 210023, Jiangsu, China
推荐引用方式(GB/T 7714):
Jun Hua,Nuo Yin,Shi Xu,et al.Enhancing the Astrocytic Clearance of Extracellular α-Synuclein Aggregates by Ginkgolides Attenuates Neural Cell Injury.[J].CELLULAR AND MOLECULAR NEUROBIOLOGY.2019,39(7):1017-1028.doi:10.1007/s10571-019-00696-2.
APA:
Jun Hua,Nuo Yin,Shi Xu,Qiang Chen,Tingting Tao...&Gang Hu.(2019).Enhancing the Astrocytic Clearance of Extracellular α-Synuclein Aggregates by Ginkgolides Attenuates Neural Cell Injury..CELLULAR AND MOLECULAR NEUROBIOLOGY,39,(7)
MLA:
Jun Hua,et al."Enhancing the Astrocytic Clearance of Extracellular α-Synuclein Aggregates by Ginkgolides Attenuates Neural Cell Injury.".CELLULAR AND MOLECULAR NEUROBIOLOGY 39..7(2019):1017-1028