CircARID1B Promotes MPP+-Induced Death and Inflammation in Dopaminergic Neurons by Elevating MAVS Through Sequestering miR-143-3p.

IF 1.8 4区 生物学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY
Xuejie Zhang, Xuan Shi, Zhining Liu
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引用次数: 0

Abstract

Increasing evidence has shown the involvement of abnormal circRNA in neurodegenerative disease progression, including Parkinson's disease (PD). Hence, this work focused on probing the function and mechanism of circARID1B on PD progression.1-Methyl-4-phenylpyridinium (MPP+)-induced human dopaminergic SK-N-AS neuroblastoma cell models were used to mimic PD injury in vitro. qRT-PCR and western blotting analyses were used to detect the levels of genes and proteins. Cell death was evaluated by cell counting kit-8 assay, flow cytometry, and lactate dehydrogenase (LDH) activity. Oxidative stress was analyzed by measuring the production of reactive oxygen species (ROS) and superoxide dismutase (SOD). Cell inflammation was determined by ELISA analysis. The binding between miR-143-3p and circARID1B or mitochondrial antiviral signaling protein (MAVS) was analyzed by dual-luciferase reporter and RNA immunoprecipitation assays. A high circARID1B expression was observed in MPP+ treated SK-N-AS cells. Functionally, circARID1B deficiency suppressed MPP+-induced apoptosis, LDH release, oxidative stress and inflammatory response in SK-N-AS cells. Mechanistically, circARID1B bound to miR-143-3p, which was reduced in SK-N-AS cells after MPP+ treatment. Moreover, miR-143-3p inhibition reversed the protective effects of circARID1B silencing on MPP+-treated SK-N-AS cells. Subsequently, we confirmed miR-143-3p directly targeted MAVS. MAVS was increased in SK-N-AS cells after MPP+ treatment. Moreover, MAVS overexpression abolished miR-143-3p up-regulation-induced inhibition of cell apoptosis, LDH release, oxidative stress and inflammation. CircARID1B deficiency suppressed MPP+-induced neural death and inflammation by miR-143-3p/MAVS axis, which may offer an improved understanding of PD progression and be useful for the development of circRNA-based therapy in PD.

CircARID1B通过隔离miR-143-3p提高MAVS,促进MPP+诱导的多巴胺能神经元的死亡和炎症。
越来越多的证据表明,异常环状rna参与神经退行性疾病的进展,包括帕金森病(PD)。因此,本研究的重点是探讨circARID1B在PD进展中的功能和机制。采用1-甲基-4-苯基吡啶(MPP+)诱导的人多巴胺能SK-N-AS神经母细胞瘤细胞模型体外模拟PD损伤。采用qRT-PCR和western blotting分析检测基因和蛋白水平。通过细胞计数试剂盒-8、流式细胞术和乳酸脱氢酶(LDH)活性评估细胞死亡情况。通过测定活性氧(ROS)和超氧化物歧化酶(SOD)的产生来分析氧化应激。ELISA法检测细胞炎症程度。通过双荧光素酶报告蛋白和RNA免疫沉淀法分析miR-143-3p与circARID1B或线粒体抗病毒信号蛋白(MAVS)的结合。在MPP+处理的SK-N-AS细胞中观察到circARID1B的高表达。在功能上,circARID1B缺乏抑制MPP+诱导的SK-N-AS细胞凋亡、LDH释放、氧化应激和炎症反应。在机制上,circARID1B与miR-143-3p结合,在MPP+处理后SK-N-AS细胞中miR-143-3p减少。此外,miR-143-3p抑制逆转了circARID1B沉默对MPP+处理的SK-N-AS细胞的保护作用。随后,我们证实了miR-143-3p直接作用于MAVS。MPP+处理后SK-N-AS细胞MAVS升高。此外,MAVS过表达可消除miR-143-3p上调诱导的细胞凋亡、LDH释放、氧化应激和炎症的抑制。CircARID1B缺乏通过miR-143-3p/MAVS轴抑制MPP+诱导的神经死亡和炎症,这可能有助于更好地了解PD的进展,并有助于开发基于circrna的PD治疗。
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来源期刊
Cell Biochemistry and Biophysics
Cell Biochemistry and Biophysics 生物-生化与分子生物学
CiteScore
4.40
自引率
0.00%
发文量
72
审稿时长
7.5 months
期刊介绍: Cell Biochemistry and Biophysics (CBB) aims to publish papers on the nature of the biochemical and biophysical mechanisms underlying the structure, control and function of cellular systems The reports should be within the framework of modern biochemistry and chemistry, biophysics and cell physiology, physics and engineering, molecular and structural biology. The relationship between molecular structure and function under investigation is emphasized. Examples of subject areas that CBB publishes are: · biochemical and biophysical aspects of cell structure and function; · interactions of cells and their molecular/macromolecular constituents; · innovative developments in genetic and biomolecular engineering; · computer-based analysis of tissues, cells, cell networks, organelles, and molecular/macromolecular assemblies; · photometric, spectroscopic, microscopic, mechanical, and electrical methodologies/techniques in analytical cytology, cytometry and innovative instrument design For articles that focus on computational aspects, authors should be clear about which docking and molecular dynamics algorithms or software packages are being used as well as details on the system parameterization, simulations conditions etc. In addition, docking calculations (virtual screening, QSAR, etc.) should be validated either by experimental studies or one or more reliable theoretical cross-validation methods.
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