Ubiquilin-2 regulates pathological alpha-synuclein.
Ubiquilin-2 regulates pathological alpha-synuclein.
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DOI:
10.1038/s41598-022-26899-0
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发表时间:
2023-01-06
影响因子:
4.6
通讯作者:
中科院分区:
文献类型:
--
作者:
The key protein implicated in Parkinson’s disease and other synucleinopathies is α-synuclein, and a post-translationally modified form of the protein, phosphorylated at serine 129 (pS129), is a principal component in Lewy bodies, a pathological hallmark of PD. While altered proteostasis has been implicated in the etiology of Parkinson’s disease, we still have a limited understanding of how α-synuclein is regulated in the nervous system. The protein quality control protein Ubiquilin-2 (UBQLN2) is known to accumulate in synucleinopathies, but whether it directly regulates α-synuclein is unknown. Using cellular and mouse models, we find that UBQLN2 decreases levels of α-synuclein, including the pS129 phosphorylated isoform. Pharmacological inhibition of the proteasome revealed that, while α-synuclein may be cleared by parallel and redundant quality control pathways, UBQLN2 preferentially targets pS129 for proteasomal degradation. Moreover, in brain tissue from human PD and transgenic mice expressing pathogenic α-synuclein (A53T), native UBQLN2 becomes more insoluble. Collectively, our studies support a role for UBQLN2 in directly regulating pathological forms of α-synuclein and indicate that UBQLN2 dysregulation in disease may contribute to α-synuclein-mediated toxicity.
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影响因子:
4.6
作者:
Gerson JE;Linton H;Xing J;Sutter AB;Kakos FS;Ryou J;Liggans N;Sharkey LM;Safren N;Paulson HL;Ivanova MI
通讯作者:
Ivanova MI
影响因子:
15.1
作者:
Ceballos-Diaz C;Rosario AM;Park HJ;Chakrabarty P;Sacino A;Cruz PE;Siemienski Z;Lara N;Moran C;Ravelo N;Golde TE;McFarland NR
通讯作者:
McFarland NR
影响因子:
8.8
作者:
Flores, Brittany N.;Li, Xingli;Barmada, Sami J.
通讯作者:
Barmada, Sami J.
影响因子:
5.4
作者:
Klein, Christine;Westenberger, Ana
通讯作者:
Westenberger, Ana
影响因子:
14.8
作者:
Barmada, Sami J.;Serio, Andrea;Arjun, Arpana;Bilican, Bilada;Daub, Aaron;Ando, D. Michael;Tsvetkov, Andrey;Pleiss, Michael;Li, Xingli;Peisach, Daniel;Shaw, Christopher;Chandran, Siddharthan;Finkbeiner, Steven
通讯作者:
Finkbeiner, Steven