机构:[1]Instute of Cerebrovascular Disease Research and Department of Neurolosy, Xuanwu Hospital of Capital Medical University, Bejing 100053, Ching首都医科大学宣武医院[2]Bejing Geriatric Medical Research Center and Bejjing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Bejjing 1 00053, China[3]Bejing Institute for Brain Disorders, Capital Medical University, Bejing 100053, China
Background: N6-methyladenosine (m6A) is one of the most extensive RNA methylation modifications in eukaryotes and participates in the pathogenesis of numerous diseases including ischemic stroke. Peripheral blood neutrophils are forerunners after ischemic brain injury and exert crucial functions. This study aims to explore the transcriptional profiles of m6A modification in neutrophils of patients with ischemic stroke. Results: We found that the expression levels of m6A regulators FTO and YTHDC1 were notably decreased in the neutrophils following ischemic stroke, and FTO expression was negatively correlated with neutrophil counts and neutrophil-to-lymphocyte ratio (NLR). The m6A mRNA&lncRNA epigenetic transcriptome microarray identified 416 significantly upregulated and 500 significantly downregulated mRNA peaks in neutrophils of ischemic stroke patients. Moreover, 48 mRNAs and 18 lncRNAs were hypermethylated, and 115 mRNAs and 29 lncRNAs were hypomethylated after cerebral ischemia. Gene ontology (GO) analysis identified that these m6A-modified mRNAs were primarily enriched in calcium ion transport, long-term synaptic potentiation, and base-excision repair. The signaling pathways involved were EGFR tyrosine kinase inhibitor resistance, ErbB, and base excision repair signaling pathway. MeRIP-qPCR validation results showed that NRG1 and GDPD1 were significantly hypermethylated, and LIG1, CHRND, lncRNA RP11-442J17.2, and lncRNA RP11600P1.2 were significantly hypomethylated after cerebral ischemia. Moreover, the expression levels of major m6A regulators Mettl3, Fto, Ythdf1, and Ythdf3 were obviously declined in the brain and leukocytes of poststroke mouse models. Conclusion: This study explored the RNA m6A methylation pattern in the neutrophils of ischemic stroke patients, indicating that it is an intervention target of epigenetic regulation in ischemic stroke.
基金:
National Natural Science Founda- tion of China [82001268, 82171301]; Capital Funds for Health Improvement and Research [2020-2-1032]; Ying- cai Program of Xuanwu Hospital of Capital Medical University [YC20220112]
第一作者机构:[1]Instute of Cerebrovascular Disease Research and Department of Neurolosy, Xuanwu Hospital of Capital Medical University, Bejing 100053, Ching[2]Bejing Geriatric Medical Research Center and Bejjing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Bejjing 1 00053, China
共同第一作者:
通讯作者:
通讯机构:[1]Instute of Cerebrovascular Disease Research and Department of Neurolosy, Xuanwu Hospital of Capital Medical University, Bejing 100053, Ching[2]Bejing Geriatric Medical Research Center and Bejjing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Bejjing 1 00053, China
推荐引用方式(GB/T 7714):
Fan Junfen,Zhong Liyuan,Yan Feng,et al.Alteration of N6-methyladenosine modi fi cation pro fi les in the neutrophilic RNAs following ischemic stroke[J].NEUROSCIENCE.2024,553:56-73.doi:10.1016/j.neuroscience.2024.06.014.
APA:
Fan, Junfen,Zhong, Liyuan,Yan, Feng,Li, Xue,Li, Lingzhi...&Luo, Yumin.(2024).Alteration of N6-methyladenosine modi fi cation pro fi les in the neutrophilic RNAs following ischemic stroke.NEUROSCIENCE,553,
MLA:
Fan, Junfen,et al."Alteration of N6-methyladenosine modi fi cation pro fi les in the neutrophilic RNAs following ischemic stroke".NEUROSCIENCE 553.(2024):56-73