Pyrroloquinoline quinone promotes mitochondrial biogenesis in rotenone-induced Parkinson’s disease model via AMPK activation

查看全文 作　　者：Qiong [1]Cheng;Juan [1]Chen;Hui [1]Guo;Jin-li [1]Lu;Jing [1]Zhou;Xin-yu [2]Guo;Yue [2]Shi;Yu [2]Zhang;Shu [1]Yu;Qi [1]Zhang;Fei [1,3]Ding

机构地区：[1]Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education,Co-innovation Center of Neuroregeneration,Nantong University,Nantong,226001,China;[2]School of Medicine,Nantong University,Nantong,226001,China;[3]Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair,Nantong,226001,China

出　　处：《Acta Pharmacologica Sinica》索引2021年第42卷第5期,共14页

基　　金：This study was supported by the National Key Research and Development Program of China(Grant No.2017YFA0104700);National Natural Science Foundation of China(81771404);the Natural Science Foundation of Jiangsu Province(Grant No.BK20161285);the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD),Jiangsu Provincial Key Medical Center,and Jiangsu Students’innovation and entrepreneurship training program(Grant No.201810304096X). 摘　　要：Mitochondrial dysfunction is considered to be one of the important pathogenesis in Parkinson’s disease (PD). We previously showed that pyrroloquinoline quinone (PQQ) could protect SH-SY5Y cells and dopaminergic neurons from cytotoxicity and prevent mitochondrial dysfunction in rotenone-induced PD models. In the present study we investigated the mechanisms underlying the protective effects of PQQ in a mouse PD model, which was established by intraperitoneal injection of rotenone (3 mg·kg^(−1)·d^(−1), ip) for 3 weeks. Meanwhile the mice were treated with PQQ (0.8, 4, 20 mg·kg^(−1)·d^(−1), ip) right after rotenone injection for 3 weeks. We showed that PQQ treatment dose-dependently alleviated the locomotor deficits and nigral dopaminergic neuron loss in PD mice. Furthermore, PQQ treatment significantly diminished the reduction of mitochondria number and their pathological change in the midbrain. PQQ dose-dependently blocked rotenone-caused reduction in the expression of PGC-1α and TFAM, two key activators of mitochondrial gene transcription, in the midbrain. In rotenone-injured human neuroblastoma SH-SY5Y cells, PTMScan Direct analysis revealed that treatment with PQQ (100 μM) differentially regulated protein phosphorylation;the differentially expressed phosphorylated proteins included the signaling pathways related with adenosine 5′-monophosphate (AMP)-activated protein kinase (AMPK) pathway. We conducted Western blot analysis and confirmed that AMPK was activated by PQQ both in PD mice and in rotenone-injured SH-SY5Y cells. Pretreatment with AMPK inhibitor dorsomorphin (4 μM) significantly attenuated the protective effect and mitochondrial biogenesis by PQQ treatment in rotenone-injured SH-SY5Y cells. Taken together, PQQ promotes mitochondrial biogenesis in rotenone-injured mice and SH-SY5Y cells via activation of AMPK signaling pathway. 关键词：Parkinson’s disease ROTENONE pyrroloquinoline quinone mitochondrial biogenesis AMPK PTMScan Direct analysis

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Pyrroloquinoline quinone promotes mitochondrial biogenesis in rotenone-induced Parkinson’s disease model via AMPK activation

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