Submit a comment
Abstract
Atrial fibrillation (AF) contributes to cardiovascular morbidity and mortality. Ubiquitin-specific peptidase 10 (USP10) plays a crucial role in numerous cellular processes; however, its particular role in AF remains largely unexplored. In the present study, USP10 expression was assessed in human atrial samples and angiotensin II–treated (Ang II–treated) mouse atrial tissues. An Ang II–induced AF mouse model was employed to investigate the effects of USP10 on atrial remodeling and AF susceptibility. Calcium imaging and patch clamp techniques were used to evaluate USP10’s influence on calcium handling and triggered activity. Additionally, RNA sequencing, coimmunoprecipitation, and ubiquitination assays were performed to explore the regulatory interactions between USP10 and NADH:ubiquinone oxidoreductase subunit S1 (NDUFS1). Our findings demonstrate that USP10 is downregulated in atrial tissues from mouse models and patients with AF. USP10 overexpression counteracts Ang II–induced atrial remodeling and reduces AF susceptibility. Furthermore, USP10 contributes to the restoration of mitochondrial function in AF. Mechanistically, USP10 deubiquitinates NDUFS1 at lysine 621, stabilizing NDUFS1 protein levels and mitigating Ang II–induced mitochondrial dysfunction. This study uncovers a critical mechanistic link between USP10 and NDUFS1. Our findings suggest that upregulating USP10 or targeting NDUFS1 degradation could provide an alternative therapeutic strategy to mitigate AF progression and associated cardiovascular risk.
Authors
Wanrong Fu, Xiao-Xu Tian, Jianghua Zhou, Yu-Xu Huang, Huan Li, Zhenya Wang, Tong-You Wade Wei, Li Li, Guo-Jun Zhao
Guidelines
The Editorial Board will only consider comments that are deemed relevant and of interest to readers. The Journal will not post data that have not been subjected to peer review; or a comment that is essentially a reiteration of another comment.
- Comments appear on the Journal’s website and are linked from the original article’s web page.
- Authors are notified by email if their comments are posted.
- The Journal reserves the right to edit comments for length and clarity.
- No appeals will be considered.
- Comments are not indexed in PubMed.
Specific requirements
- Maximum length, 400 words
- Entered as plain text or HTML
- Author’s name and email address, to be posted with the comment
- Declaration of all potential conflicts of interest (even if these are not ultimately posted); see the Journal’s conflict-of-interest policy
- Comments may not include figures
