Abstract:
:Formation of protein aggregates is the hallmark of neurodegenerative diseases such as Alzheimer's disease, Huntington's disease, and frontotemporal dementia. Many ubiquitin-associated proteins are recruited to protein aggregates, such as sequestosome 1/p62 (p62), parkin, and cereblon (CRBN). However, the roles of these proteins in the regulation of the formation of protein aggregates are not well understood. Here, using cell and animal models, we discover that CRBN directly interacts with p62 and inhibits the formation of protein aggregates induced by mutant huntingtin (Htt-polyQ) and TAR DNA-binding protein 43 (TDP43C) in a p62-dependent manner. Furthermore, we find the suppression of the formation of protein aggregates by CRBN is caused by the decrease of the binding affinity of p62 to ubiquitinated proteins but not by the change of p62 protein level. Our study reveals a novel role of CRBN and the underlying molecular mechanism in the regulation of misfolded proteins in neurodegenerative diseases, which may provide new insights for finding pharmacological targets for these diseases.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Zhou L,Hao Z,Wang G,Xu Gdoi
10.1093/hmg/ddx433subject
Has Abstractpub_date
2018-02-15 00:00:00pages
667-678issue
4eissn
0964-6906issn
1460-2083pii
4764074journal_volume
27pub_type
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