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非编码 RNA 在脑梗死/缺血再灌注损伤中的神经炎症和免疫调节研究进展的系统评价。

A systematic review of the research progress of non-coding RNA in neuroinflammation and immune regulation in cerebral infarction/ischemia-reperfusion injury.

机构信息

Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, Hunan University of Chinese Medicine, Changsha, China.

The First Hospital of Hunan University of Chinese Medicine, Changsha, China.

出版信息

Front Immunol. 2022 Oct 7;13:930171. doi: 10.3389/fimmu.2022.930171. eCollection 2022.

Abstract

Cerebral infarction/ischemia-reperfusion injury is currently the disease with the highest mortality and disability rate of cardiovascular disease. Current studies have shown that nerve cells die of ischemia several hours after ischemic stroke, which activates the innate immune response in the brain, promotes the production of neurotoxic substances such as inflammatory cytokines, chemokines, reactive oxygen species and - nitrogen oxide, and mediates the destruction of blood-brain barrier and the occurrence of a series of inflammatory cascade reactions. Meanwhile, the expression of adhesion molecules in cerebral vascular endothelial cells increased, and immune inflammatory cells such as polymorphonuclear neutrophils, lymphocytes and mononuclear macrophages passed through vascular endothelial cells and entered the brain tissue. These cells recognize antigens exposed by the central nervous system in the brain, activate adaptive immune responses, and further mediate secondary neuronal damage, aggravating neurological deficits. In order to reduce the above-mentioned damage, the body induces peripheral immunosuppressive responses through negative feedback, which increases the incidence of post-stroke infection. This process is accompanied by changes in the immune status of the ischemic brain tissue in local and systemic systems. A growing number of studies implicate noncoding RNAs (ncRNAs) as novel epigenetic regulatory elements in the dysfunction of various cell subsets in the neurovascular unit after cerebral infarction/ischemia-reperfusion injury. In particular, recent studies have revealed advances in ncRNA biology that greatly expand the understanding of epigenetic regulation of immune responses and inflammation after cerebral infarction/ischemia-reperfusion injury. Identification of aberrant expression patterns and associated biological effects of ncRNAs in patients revealed their potential as novel biomarkers and therapeutic targets for cerebral infarction/ischemia-reperfusion injury. Therefore, this review systematically presents recent studies on the involvement of ncRNAs in cerebral infarction/ischemia-reperfusion injury and neuroimmune inflammatory cascades, and elucidates the functions and mechanisms of cerebral infarction/ischemia-reperfusion-related ncRNAs, providing new opportunities for the discovery of disease biomarkers and targeted therapy. Furthermore, this review introduces clustered regularly interspaced short palindromic repeats (CRISPR)-Display as a possible transformative tool for studying lncRNAs. In the future, ncRNA is expected to be used as a target for diagnosing cerebral infarction/ischemia-reperfusion injury, judging its prognosis and treatment, thereby significantly improving the prognosis of patients.

摘要

脑梗死/缺血再灌注损伤是目前心血管疾病中死亡率和致残率最高的疾病。目前的研究表明,缺血性中风后数小时,神经细胞因缺血而死亡,这会激活大脑中的固有免疫反应,促进炎症细胞因子、趋化因子、活性氧和 - 氮氧化物等神经毒性物质的产生,并介导血脑屏障的破坏和一系列炎症级联反应的发生。同时,脑血管内皮细胞中黏附分子的表达增加,多形核粒细胞、淋巴细胞和单核巨噬细胞等免疫炎性细胞穿过血管内皮细胞进入脑组织。这些细胞识别中枢神经系统暴露的抗原,激活适应性免疫反应,进一步介导神经元的继发性损伤,加重神经功能缺损。为了减少上述损伤,机体通过负反馈诱导外周免疫抑制反应,从而增加中风后感染的发生率。这个过程伴随着缺血性脑组织在局部和全身系统中的免疫状态的变化。越来越多的研究表明,非编码 RNA(ncRNA)作为新的表观遗传调节因子,参与脑梗死/缺血再灌注损伤后神经血管单元中各种细胞亚群的功能障碍。特别是,最近的研究揭示了 ncRNA 生物学的进展,极大地扩展了对脑梗死/缺血再灌注损伤后免疫反应和炎症的表观遗传调控的理解。ncRNA 表达模式的异常和与患者相关的生物学效应的鉴定,揭示了它们作为脑梗死/缺血再灌注损伤的新型生物标志物和治疗靶点的潜力。因此,本综述系统地介绍了 ncRNA 在脑梗死/缺血再灌注损伤和神经免疫炎症级联中的作用的最新研究,并阐明了与脑梗死/缺血再灌注相关的 ncRNA 的功能和机制,为疾病标志物的发现和靶向治疗提供了新的机会。此外,本综述介绍了作为研究长链非编码 RNA(lncRNA)的一种可能的变革性工具的聚类规则间隔短回文重复序列(CRISPR)-显示。在未来,ncRNA 有望作为诊断脑梗死/缺血再灌注损伤、判断其预后和治疗的靶点,从而显著改善患者的预后。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b424/9585453/06e8f264a6c3/fimmu-13-930171-g001.jpg

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