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m A 去甲基酶 FTO 通过 YAP1 调控缺血再灌注损伤中心肌细胞的凋亡和炎症。

mA demethylase FTO regulates the apoptosis and inflammation of cardiomyocytes via YAP1 in ischemia-reperfusion injury.

机构信息

Department of Cardiology, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, P.R. China.

Physical Examination Center, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, P.R. China.

出版信息

Bioengineered. 2022 Mar;13(3):5443-5452. doi: 10.1080/21655979.2022.2030572.

DOI:10.1080/21655979.2022.2030572
PMID:35176940
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8974143/
Abstract

Reperfusion therapy after acute myocardial infarction can induce myocardial ischemia-reperfusion injury (IRI). Novel evidence has illustrated that N-methyladenosine (mA) modification modulates the myocardial IRI progression. Here, our study focuses on the role of mA methyltransferase fat mass and obesity-associated protein (FTO) in myocardial ischemia/reoxygenation injury and explores potential regulatory mechanisms. Results discovered that FTO down-expressed in myocardial IRI mice and hypoxia/reoxygenation (H/R)-induced cardiomyocytes. Functionally, FTO overexpression attenuated the H/R-induced apoptosis and inflammation of cardiomyocytes. Mechanistically, methylated RNA immunoprecipitation quantitative polymerase chain reaction (MeRIP-qPCR) assay and RIP assay revealed that Yap1 mRNA acted as the target of FTO in cardiomyocytes. Moreover, FTO uninstalled the methylation of Yap1 mRNA, and enforced the stability of Yap1 mRNA. Taken together, our study reveals the role of FTO in H/R-induced myocardial cell injury via mA-dependent manner, which may provide a new approach to improve myocardial IRI.

摘要

急性心肌梗死后的再灌注治疗可引起心肌缺血再灌注损伤(IRI)。新的证据表明,N6-甲基腺苷(m6A)修饰调节心肌 IRI 的进展。在这里,我们的研究集中在 m6A 甲基转移酶脂肪量和肥胖相关蛋白(FTO)在心肌缺血/再灌注损伤中的作用,并探讨其潜在的调节机制。结果发现,FTO 在心肌 IRI 小鼠和缺氧/复氧(H/R)诱导的心肌细胞中表达下调。功能上,FTO 过表达可减轻 H/R 诱导的心肌细胞凋亡和炎症。机制上,甲基化 RNA 免疫沉淀定量聚合酶链反应(MeRIP-qPCR)检测和 RIP 检测显示 Yap1 mRNA 是心肌细胞中 FTO 的靶标。此外,FTO 去除了 yap1 mRNA 的甲基化,增强了 yap1 mRNA 的稳定性。总之,我们的研究揭示了 FTO 通过 m6A 依赖的方式在 H/R 诱导的心肌细胞损伤中的作用,这可能为改善心肌 IRI 提供一种新的方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f343/8974143/8288be73b30b/KBIE_A_2030572_F0005_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f343/8974143/735e9a5abbe4/KBIE_A_2030572_F0001_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f343/8974143/8ab816b3aed6/KBIE_A_2030572_F0002_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f343/8974143/ca643e7551de/KBIE_A_2030572_F0003_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f343/8974143/5291f7286259/KBIE_A_2030572_F0004_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f343/8974143/8288be73b30b/KBIE_A_2030572_F0005_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f343/8974143/735e9a5abbe4/KBIE_A_2030572_F0001_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f343/8974143/8ab816b3aed6/KBIE_A_2030572_F0002_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f343/8974143/ca643e7551de/KBIE_A_2030572_F0003_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f343/8974143/5291f7286259/KBIE_A_2030572_F0004_OC.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f343/8974143/8288be73b30b/KBIE_A_2030572_F0005_OC.jpg

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