中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (在线): 1-8.

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神经源性膀胱miRNA-mRNA调控网络的筛选与验证

郭淑慧1,杨  晔1,江杨洋2,许建文1   

  1. 1广西医科大学第一附属医院,广西壮族自治区南宁市  530000;2广西医科大学第四附属医院,广西壮族自治区柳州市  545000
  • 收稿日期:2022-07-09 修回日期:2022-08-27 出版日期:2023-01-08 发布日期:2022-09-30
  • 通讯作者: 许建文,博士,主任医师,教授,博士生导师,广西医科大学第一附属医院,广西壮族自治区南宁市 530000
  • 作者简介:郭淑慧,女,1996年生,福建省漳浦县人,汉族,广西医科大学第一附属医院在读硕士,医师,主要从事神经、脊髓损伤的中西医结合康复研究。
  • 基金资助:
    国家自然科学基金(81960417),项目负责人:许建文;广西自然科学基金项目(2018GXNSFAA050033),项目负责人:许建文

Screening and validation of neurogenic bladder miRNA-mRNA regulatory network

Guo Shuhui1, Yang Ye1, Jiang Yangyang2, Xu Jianwen1   

  1. 1The First Affiliated Hospital of Guangxi Medical University, Nanning 530000, Guangxi Zhuang Autonomous Region, China; 2The Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou 545000, Guangxi Zhuang Autonomous Region, China
    Guo Shuhui, Master candidate, Physician, The First Affiliated Hospital of Guangxi Medical University, Nanning 530000, Guangxi Zhuang Autonomous Region, China
  • Received:2022-07-09 Revised:2022-08-27 Online:2023-01-08 Published:2022-09-30
  • Contact: Xu Jianwen, MD, Chief physician, Professor, Doctoral supervisor, The First Affiliated Hospital of Guangxi Medical University, Nanning 530000, Guangxi Zhuang Autonomous Region, China
  • About author:Guo Shuhui, Master candidate, Physician, The First Affiliated Hospital of Guangxi Medical University, Nanning 530000, Guangxi Zhuang Autonomous Region, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81960417 (to XJW); Guangxi Natural Science Foundation Project, No. 2018GXNSFAA050033 (to XJW)

摘要:

文题释义:

神经源性膀胱:是一种由于神经损伤导致的膀胱功能障碍,表现为尿急、尿频、排尿不尽、排尿费力和尿失禁,严重影响患者的生活质量;随着疾病的进展,患者可能出现泌尿系感染、肾积水甚至肾功能衰竭,严重者可危及生命。
脑源性神经营养因子:是一种神经营养因子蛋白,可以促进轴突生长、抑制神经炎症、保护神经细胞免受氧化应激,是神经组织损伤修复的关键调控因子。

摘要
背景:miRNA-mRNA调控网络在各种生物过程中发挥重要作用,但其在脊髓损伤后神经源性膀胱中的具体作用机制尚不清楚。 
目的:基于生物信息学挖掘神经源性膀胱的相关靶点,并构建miRNA-mRNA调控网络,加以动物实验验证。
方法:从GEO数据库筛选神经源性膀胱的差异基因,构建miRNA-mRNA调控网络。利用David数据库对差异基因进行GO和KEGG分析,利用STRING数据库进行PPI分析,并通过Cytoscape和ROC曲线筛选关键基因,最终通过神经源性膀胱大鼠模型对关键基因进行RT-PCR验证。
结果与结论:①共筛选出188个神经源性膀胱的差异基因,GO及KEGG分析发现其主要在炎症反应、Cytokine-cytokine受体相互作用、趋化因子信号通路等方面显著富集;通过Cytoscape及ROC曲线结果筛选出miR-147-脑源性神经营养因子和miR-362-5p-Scn9a 2个关键调控网络;②RT-PCR检测结果显示,与对照组比较,神经源性膀胱模型大鼠中miR-147、miR-362-5p、脑源性神经营养因子表达量上调,Scn9a基因下调;③结果提示,miR-147-脑源性神经营养因子、miR-362-5p-Scn9a作为炎症、氧化应激等病理生理过程的重要调控因子,有望成为诊断和治疗神经源性膀胱的新靶点。

关键词: 神经源性膀胱, 脊髓损伤, 生物信息学, GEO数据库, 差异基因, 调控网络, miRNA-mRNA, 炎症, 氧化应激

Abstract: Abstract
BACKGROUND: The miRNA-mRNA regulatory network plays an important role in various biological processes, but its specific mechanism in neurogenic bladder after spinal cord injury remains unclear.
OBJECTIVE: To mine the related targets of neurogenic bladder based on bioinformatics and to construct the miRNA-mRNA regulatory network, verified by animal experiments.
METHODS: The differential genes of neurogenic bladder were screened from GEO database to construct the miRNA-mRNA regulatory network. The differential genes were analyzed by gene ontology and Kyoto Encyclopedia of Genes and Genomes analyses using the David database. Protein-protein interaction analysis was performed using the STRING database. Key genes were identified by Cytoscape and ROC curves. Finally the key genes were validated by RT-PCR in a rat model of neurogenic bladder.
RESULTS AND CONCLUSION: A total of 188 differential genes related to neurogenic bladder were identified. Gene ontology and Kyoto Encyclopedia of Genes and Genomes analyses revealed that they were enriched mainly in inflammatory response, cytokine-cytokine receptor interaction, and chemokine signaling pathway. Two key regulatory networks, miR-147-brain-derived neurotrophic factor and miR-362-5p-Scn9a, were identified based on the Cytoscape and ROC curve results. RT-PCR results showed that miR-147, miR-362-5p, and brain-derived neurotrophic factor were highly expressed in the neurogenic bladder rats, while Scn9a was lowly expressed compared with the control rats. Overall, these findings indicate that miR-147-brain-derived neurotrophic factor and miR-362-5p-Scn9a actas important regulators of pathophysiological processes such as inflammation and oxidative stress, which are expected to become new targets for the diagnosis and treatment of neurogenic bladder. 

Key words: neurogenic bladder, spinal cord injury, bioinformatics, GEO database, differential genes, regulatory network, miRNA-mRNA, inflammation, oxidative stress

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