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Current Neurovascular Research

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ISSN (Print): 1567-2026
ISSN (Online): 1875-5739

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Research Article

Dual Specificity Phosphatase 3 (DUSP3) Knockdown Alleviates Acute Myocardial Infarction Damage via Inhibiting Apoptosis and Inflammation

Author(s): Aixia Jiang, Caixia Zhao, Dongying Zhang and Kun Yu*

Volume 20, Issue 1, 2023

Published on: 09 May, 2023

Page: [14 - 22] Pages: 9

DOI: 10.2174/1567202620666230502115433

Price: $65

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Abstract

Background: Dual Specificity Phosphatase 3 (DUSP3) regulates the innate immune response and is associated with ischemia/reperfusion (I/R). However, the precise function of DUSP3 in acute myocardial infarction (AMI) remains to be established.

Methods: In this study, the AMI model in vivo was established in mice by permanent left anterior descending coronary artery (LAD) occlusion, and primary neonatal mouse cardiomyocytes were treated with hypoxia for 12 hours to mimic AMI in vitro. Sh-DUSP3 and AAV9-sh-DUSP3 were used to knock down the DUSP3 expression. LVEF%, LVFS%, SOD1, and HO-1 level, and TTC staining were used to test the cardiac function. Flow cytometric analysis, Western blot, and TUNEL staining were used to investigate the effect of DUSP3 knockdown on apoptosis. Moreover, we detect inflammatory factors expression and oxidative stress by ELISA. Besides, we investigate DUSP3 expression by RT-qPCR.

Results: Our findings determined the role of DUSP3 in the progression of AMI. And demonstrated that DUSP3 knockdown alleviated oxidative stress, inflammation, and apoptosis. In addition, our results indicated that DUSP3 knockdown could regulate the expression of p-NF-κB, ICAM1, and VCAM1.

Conclusion: Our results demonstrated that the knockdown of DUSP3 could effectively alleviate AMI symptoms and be mediated through the NF-κB signaling pathway.

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