DOI: 10.1016/j.scib.2021.01.030
论文题名: TAX1BP1 protects against myocardial infarction-associated cardiac anomalies through inhibition of inflammasomes in a RNF34/MAVS/NLRP3-dependent manner
作者: Xu H. ; Yu W. ; Sun S. ; Li C. ; Ren J. ; Zhang Y.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期: 16 起始页码: 1669
结束页码: 1683
语种: 英语
中文关键词: Acute myocardial infarction
; Autophagic degradation
; Mitochondrial antiviral signaling protein
; NLRP3 inflammasome
; RNF34
; TAX1BP1
英文关键词: Cardiology
; Cell death
; Cell membranes
; Chemical activation
; Diseases
; Heart
; Mitochondria
; Signaling
; Acute myocardial infarction
; Antivirals
; Autophagic degradation
; Binding proteins
; Inflammasome
; Mitochondrial antiviral signaling protein
; NLRP3 inflammasome
; Ring finger protein 34
; Signalling proteins
; Tax1-binding protein 1
; Proteins
英文摘要: Acute myocardial infarction (MI), one of the most common cardiovascular emergencies, is a leading cause of morbidity and mortality. Ample evidence has revealed an essential role for inflammasome activation and autophagy in the pathogenesis of acute MI. Tax1-binding protein 1 (TAX1BP1), an adaptor molecule involved in termination of proinflammatory signaling, serves as an important selective autophagy adaptor, but its role in cardiac ischemia remains elusive. This study examined the role of TAX1BP1 in myocardial ischemic stress and the underlying mechanisms involved. Levels of TAX1BP1 were significantly downregulated in heart tissues of patients with ischemic heart disease and in a left anterior descending (LAD) ligation-induced model of acute MI. Adenovirus carrying TAX1BP1 was delivered into the myocardium. The acute MI induced procedure elicited an infarct and cardiac dysfunction, the effect of which was mitigated by TAX1BP1 overexpression with little effect from viral vector alone. TAX1BP1 nullified acute MI-induced activation of the NLRP3 inflammasome and associated mitochondrial dysfunction. TAX1BP1 overexpression suppressed NLRP3 mitochondrial localization by inhibiting the interaction of NLRP3 with mitochondrial antiviral signaling protein (MAVS). Further investigation revealed that ring finger protein 34 (RNF34) was recruited to interact with TAX1BP1 thereby facilitating autophagic degradation of MAVS through K27-linked polyubiquitination of MAVS. Knockdown of RNF34 using siRNA nullified TAX1BP1 yielded protection against hypoxia-induced MAVS mitochondrial accumulation, NLRP3 inflammasome activation and associated loss of mitochondrial membrane potential. Taken together, our results favor a cardioprotective role for TAX1BP1 in acute MI through repression of inflammasome activation in a RNF34/MAVS-dependent manner. © 2021 Science China Press Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170464
Appears in Collections: 气候变化与战略
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作者单位: Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China; Department of Cardiology, Affiliated Hospital of Nantong University, Jiangsu, 226001, China; Department of Cardiology, Xijing Hospital, Air Force Military Medical University, Xi'an, 710038, China; Department of Pathology, University of Washington, Seattle, WA 98195, United States
Recommended Citation:
Xu H.,Yu W.,Sun S.,et al. TAX1BP1 protects against myocardial infarction-associated cardiac anomalies through inhibition of inflammasomes in a RNF34/MAVS/NLRP3-dependent manner[J]. Science Bulletin,2021-01-01,66(16)