Distinct multilevel misregulations of Parkin and PINK1 revealed in cell and animal models of TDP-43 proteinopathy.
Distinct multilevel misregulations of Parkin and PINK1 revealed in cell and animal models of TDP-43 proteinopathy.
复制标题
TDP-43 蛋白病的细胞和动物模型揭示了 Parkin 和 PINK1 的明显多级失调
DOI:
10.1038/s41419-018-1022-y
复制
发表时间:
2018-09-20
影响因子:
9
通讯作者:
Fang Y
中科院分区:
文献类型:
--
作者:
Sun X;Duan Y;Qin C;Li JC;Duan G;Deng X;Ni J;Cao X;Xiang K;Tian K;Chen CH;Li A;Fang Y
Parkin and PINK1 play an important role in mitochondrial quality control, whose malfunction may also be involved in the pathogenesis of amyotrophic lateral sclerosis (ALS). Excessive TDP-43 accumulation is a pathological hallmark of ALS and is associated with Parkin protein reduction in spinal cord neurons from sporadic ALS patients. In this study, we reveal that Parkin and PINK1 are differentially misregulated in TDP-43 proteinopathy at RNA and protein levels. Using knock-in flies, mouse primary neurons, and TDP-43Q331K transgenic mice, we further unveil that TDP-43 downregulates Parkin mRNA, which involves an unidentified, intron-independent mechanism and requires the RNA-binding and the protein–protein interaction functions of TDP-43. Unlike Parkin, TDP-43 does not regulate PINK1 at an RNA level. Instead, excess of TDP-43 causes cytosolic accumulation of cleaved PINK1 due to impaired proteasomal activity, leading to compromised mitochondrial functions. Consistent with the alterations at the molecular and cellular levels, we show that transgenic upregulation of Parkin but downregulation of PINK1 suppresses TDP-43-induced degenerative phenotypes in a Drosophila model of ALS. Together, these findings highlight the challenge associated with the heterogeneity and complexity of ALS pathogenesis, while pointing to Parkin–PINK1 as a common pathway that may be differentially misregulated in TDP-43 proteinopathy.
登录
查看更多内容
影响因子:
38.1
作者:
Chen-Plotkin, Alice S.;Lee, Virginia M. -Y.;Trojanowski, John Q.
通讯作者:
Trojanowski, John Q.
影响因子:
30.8
作者:
Kim, Hyung-Jun;Raphael, Alya R.;LaDow, Eva S.;McGurk, Leeanne;Weber, Ross A.;Trojanowski, John Q.;Lee, Virginia M-Y;Finkbeiner, Steven;Gitler, Aaron D.;Bonini, Nancy M.
通讯作者:
Bonini, Nancy M.
DOI:
10.1073/pnas.0500346102
发表时间:
2005-07-19
影响因子:
11.1
作者:
Cha, GH;Kim, S;Cho, KS
通讯作者:
Cho, KS
影响因子:
4.7
作者:
Hebron M;Chen W;Miessau MJ;Lonskaya I;Moussa CE
通讯作者:
Moussa CE
DOI:
10.1083/jcb.201402104
发表时间:
2014-04-28
期刊:
The Journal of cell biology
影响因子:
--
作者:
Kane LA;Lazarou M;Fogel AI;Li Y;Yamano K;Sarraf SA;Banerjee S;Youle RJ
通讯作者:
Youle RJ