Abstract:
:BRCA1-BRCA2-containing complex subunit 3 (BRCC3), a Lys-63-specific deubiquitinase, is a member of the JAMM/MPN family of zinc metalloproteases. BRCC3 have been shown to promote the inflammasome activation by deubiquitinating NOD-like receptor containing pyrin domain 3 (NLRP3). We reported the involvement of neuronal inflammasome in Parkinson's Disease (PD), but the molecular mechanism remains unknown. In this study, we showed that BRCC3 expression was increased in PD models. Knock-down of BRCC3 with shRNA lentivirus decreased NLRP3 neuronal inflammasome. Interestingly, upregulating cyclin-dependent kinase 5 (Cdk5) increased the expression of BRCC3 in HEK293 cell, while inhibition of Cdk5 decreased the upregulated BRCC3 level in MPP+-induced PD cell model. The interaction between Cdk5 and BRCC3 was further confirmed by immunoprecipitation. Moreover, inhibition of Cdk5 suppressed the expression of NLRP3, pro-caspase-1, the adaptor molecule apoptosis-associated speck-like protein containing a CARD (ASC) and interleukin-1 beta (IL-1β). Besides, inhibition of BRCC3 blocked the increased secretion of IL-1β. Together, these results suggest that Cdk5-mediated BRCC3 expression may play a critical role in neuronal inflammation by regulating the NLRP3 inflammasome in PD.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Cheng X,Xu S,Zhang C,Qin K,Yan J,Shao Xdoi
10.1016/j.bbrc.2019.11.141subject
Has Abstractpub_date
2020-02-12 00:00:00pages
647-654issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(19)32269-7journal_volume
522pub_type
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