Genetic and chemical activation of TFEB mediates clearance of aggregated α-synuclein.

Genetic and chemical activation of TFEB mediates clearance of aggregated α-synuclein.
复制标题

DOI:
10.1371/journal.pone.0120819
复制
发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Segatori L
Segatori L
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Kilpatrick K;Zeng Y;Hancock T;Segatori L

文献摘要

参考文献

被引文献

相似文献

α-突触核蛋白(α-syn)的聚集与包括帕金森病(PD)在内的许多神经退行性疾病的发展有关。α-syn聚集体的形成是由于α-syn错误折叠的异常积累和两个主要的细胞内蛋白质降解系统,即泛素-蛋白酶体系统和自噬-溶酶体途径的活性不足或受损。在这项研究中,我们研究了转录因子EB (TFEB),自噬-溶酶体途径的主要调节因子,在阻止α-syn聚集体在人神经胶质瘤细胞中的积累中的作用。我们发现TFEB过表达通过诱导α-syn的自噬清除来减少聚集的α-syn的积累。此外,我们发现2-羟丙基-β-环糊精对TFEB的药理激活促进了聚集的α-syn的自噬清除。总之,我们的研究结果表明,TFEB调节α-syn的自噬清除,并表明TFEB的药理激活是一种有希望的策略,以增强α-syn聚集体的降解。
Aggregation of α-synuclein (α-syn) is associated with the development of a number of neurodegenerative diseases, including Parkinson’s disease (PD). The formation of α-syn aggregates results from aberrant accumulation of misfolded α-syn and insufficient or impaired activity of the two main intracellular protein degradation systems, namely the ubiquitin-proteasome system and the autophagy-lysosomal pathway. In this study, we investigated the role of transcription factor EB (TFEB), a master regulator of the autophagy-lysosomal pathway, in preventing the accumulation of α-syn aggregates in human neuroglioma cells. We found that TFEB overexpression reduces the accumulation of aggregated α-syn by inducing autophagic clearance of α-syn. Furthermore, we showed that pharmacological activation of TFEB using 2-hydroxypropyl-β-cyclodextrin promotes autophagic clearance of aggregated α-syn. In summary, our findings demonstrate that TFEB modulates autophagic clearance of α-syn and suggest that pharmacological activation of TFEB is a promising strategy to enhance the degradation of α-syn aggregates.
DOI: 10.1021/ja3100287
发表时间: 2012-12-26
影响因子: 15
作者:
Cook, Nathan P.;Kilpatrick, Kiri;Marti, Angel A.
通讯作者: Marti, Angel A.
DOI: 10.1021/cb400017h
发表时间: 2013-07-19
影响因子: 4
作者:
Kilpatrick K;Novoa JA;Hancock T;Guerriero CJ;Wipf P;Brodsky JL;Segatori L
通讯作者: Segatori L
DOI: 10.1371/journal.pone.0009313
发表时间: 2010-02-19
期刊: PloS one
影响因子: 3.7
作者:
Crews L;Spencer B;Desplats P;Patrick C;Paulino A;Rockenstein E;Hansen L;Adame A;Galasko D;Masliah E
通讯作者: Masliah E
DOI: 10.1073/pnas.1305623110
发表时间: 2013-05-07
影响因子: 11.1
作者:
Decressac, Mickael;Mattsson, Bengt;Bjorklund, Anders
通讯作者: Bjorklund, Anders
DOI: 10.1016/j.bbrc.2006.10.042
发表时间: 2006-12-08
影响因子: 3.1
作者:
Cheng, Jinglei;Ohsaki, Yuki;Fujimoto, Toyoshi
通讯作者: Fujimoto, Toyoshi