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Ying G, Tang Z, Zhang J, Zeng J, Zheng Z, Zhang W, Ding L, Wen T, Yi D. Long noncoding RNA CASC2 protect ROS-induced oxidative stress in myocardial infarction by miR-18a/SIRT2. Biotechnol Appl Biochem 2022; 69:1857-1866. [PMID: 34505723 DOI: 10.1002/bab.2252] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 08/23/2021] [Indexed: 01/28/2023]
Abstract
We aimed to investigate the function and its possible mechanisms of long noncoding RNA (lncRNA) in acute myocardial infarction (AMI) model. Patients with AMI and normal volunteers were selected from our hospital. Sprague-Dawley rats were induced into in vivo model of AMI. H9c2 cells were treated with H2 O2 to generate injury model. A significantly lower serum gene expression of lncRNA CASC2 was detected. In rat models of AMI, lncRNA CASC2 gene expressions in heart tissue of mice with AMI were decreased. In in vitro model, downregulation of lncRNA CASC2 increased reactive oxygen species (ROS)-induced oxidative stress; lncRNA CASC2 induced NADPH oxidase (NOX-2) expression and suppressed miR-18a expression; MiR-18a promoted ROS-induced oxidative stress; downregulation of miR-18a decreased ROS-induced oxidative stress. The inhibition of miR-18a reversed the effects of CASC2 downregulation on ROS-induced oxidative stress in in vitro model of AMI. The activation of miR-18a reversed the effects of CASC2 on ROS-induced oxidative stress in in vitro model of AMI. These data for the first time suggest that lncRNA CASC2 have better protective effects on AMI, which could reduce oxidative stress through their carried miR-18a and subsequently downregulating the SIRT2/ROS pathway.
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Affiliation(s)
- Guoqiu Ying
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,The First Clinical Medical College of Nanchang University, Nanchang, Jiangxi, China
| | - Zijun Tang
- The First Clinical Medical College of Nanchang University, Nanchang, Jiangxi, China
| | - Jing Zhang
- The First Clinical Medical College of Nanchang University, Nanchang, Jiangxi, China
| | - Junyi Zeng
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,The First Clinical Medical College of Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Institute of Hypertension, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Zeqi Zheng
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,The First Clinical Medical College of Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Institute of Hypertension, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Wan Zhang
- The First Clinical Medical College of Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Institute of Hypertension, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Lu Ding
- The First Clinical Medical College of Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Institute of Hypertension, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Tong Wen
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,The First Clinical Medical College of Nanchang University, Nanchang, Jiangxi, China
| | - Dasong Yi
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,The First Clinical Medical College of Nanchang University, Nanchang, Jiangxi, China
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