Mitochondrial Defects in Fibroblasts of Pathogenic MAPT Patients.
Mitochondrial Defects in Fibroblasts of Pathogenic MAPT Patients.
复制标题
致病性MAPT患者成纤维细胞的线粒体缺陷。
DOI:
10.3389/fcell.2021.765408
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发表时间:
2021
影响因子:
5.5
通讯作者:
Wang X
中科院分区:
文献类型:
--
作者:
Bharat V;Hsieh CH;Wang X
Mutations in MAPT gene cause multiple neurological disorders, including frontal temporal lobar degeneration and parkinsonism. Increasing evidence indicates impaired mitochondrial homeostasis and mitophagy in patients and disease models of pathogenic MAPT. Here, using MAPT patients’ fibroblasts as a model, we report that disease-causing MAPT mutations compromise early events of mitophagy. By employing biochemical and mitochondrial assays we discover that upon mitochondrial depolarization, the recruitment of LRRK2 and Parkin to mitochondria and degradation of the outer mitochondrial membrane protein Miro1 are disrupted. Using high resolution electron microscopy, we reveal that the contact of mitochondrial membranes with ER and cytoskeleton tracks is dissociated following mitochondrial damage. This membrane dissociation is blocked by a pathogenic MAPT mutation. Furthermore, we provide evidence showing that tau protein, which is encoded by MAPT gene, interacts with Miro1 protein, and this interaction is abolished by pathogenic MAPT mutations. Lastly, treating fibroblasts of a MAPT patient with a small molecule promotes Miro1 degradation following depolarization. Altogether, our results show molecular defects in a peripheral tissue of patients and suggest that targeting mitochondrial quality control may have a broad application for future therapeutic intervention.
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DOI:
10.1083/jcb.200601067
发表时间:
2006-05-22
期刊:
The Journal of cell biology
影响因子:
--
作者:
Glater EE;Megeath LJ;Stowers RS;Schwarz TL
通讯作者:
Schwarz TL
影响因子:
3.5
作者:
Di Nottia, M.;Masciullo, M.;Silvestri, G.
通讯作者:
Silvestri, G.
影响因子:
14.5
作者:
Fitzgerald, Julia C.;Zimprich, Alexander;Krueger, Rejko
通讯作者:
Krueger, Rejko
影响因子:
29
作者:
Hsieh, Chung-Han;Li, Li;Wang, Xinnan
通讯作者:
Wang, Xinnan
影响因子:
9.3
作者:
Basso, Valentina;Marchesan, Elena;Ziviani, Elena
通讯作者:
Ziviani, Elena