科学技术与工程2024,Vol.24Issue(27) :11594-11603.DOI:10.12404/j.issn.1671-1815.2400388

6-姜烯酚通过miRNA-26a-5p/DAPK1减轻大鼠脑缺血再灌注损伤

6-Shogaol Attenuates Cerebral Ischaemia-reperfusion Injury in Rats via miRNA-26a-5p/DAPK1

饶欧阳 李世欣 朱宁 周航向 陶浚泠 李叶红 刘颖
科学技术与工程2024,Vol.24Issue(27) :11594-11603.DOI:10.12404/j.issn.1671-1815.2400388

6-姜烯酚通过miRNA-26a-5p/DAPK1减轻大鼠脑缺血再灌注损伤

6-Shogaol Attenuates Cerebral Ischaemia-reperfusion Injury in Rats via miRNA-26a-5p/DAPK1

饶欧阳 1李世欣 1朱宁 1周航向 1陶浚泠 2李叶红 2刘颖2
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作者信息

  • 1. 贵州医科大学临床医学院,贵阳 550004
  • 2. 贵州医科大学附属医院,贵阳 550004
  • 折叠

摘要

为探究6-姜烯酚(6-Shogaol,6-SH)对大鼠脑缺血再灌注损伤(cerebral ischemia-reperfusion injury,CIRI)的保护作用,采用分子对接观察6-SH能否自发性结合microRNA-26a-5p(miRNA-26a-5P),双萤光素报告基因检测验证miRNA-26a-5p与死亡相关蛋白激酶1(ceath associated protein kinase 1,DAPK 1)的靶向关系;线栓法制备大鼠CIRI模型,雄性SD大鼠随机为假手术组、模型组、6-姜烯酚组;于CIRI后72 h进行改良神经功能评分,氯化三苯基四氮唑(triphenyltetrazolium chloride,TTC)染色,评分后采集脑组织标本进行苏木精-伊红(hematoxylin-eosin staining,HE)染色观察神经细胞病理损伤情况,透射电镜观察神经元超微结构及自噬情况,免疫荧光检测自噬标志物,实时荧光定量和蛋白印迹法检测自噬和钙超载相关蛋白和基因.实验结果表明6姜烯酚可上调miRNA-26a-5p的表达,抑制DAPK1的表达,减轻大鼠CIRI后过度自噬和钙超载,发挥神经保护作用.

Abstract

To explore the protective effects of 6-shogaol(6-SH)against cerebral is chemia-reperfusion injury(CIRI)in rats,mo-lecular docking was utilized to investigate the spontaneous binding ability of 6-SH with microRNA-26a-5p(miRNA-26a-5P).Dual lu-ciferase reporter gene assays were employed to validate the targeted relationship between miRNA-26a-5p and death associated protein kinase 1(DAPK1).The CIRI rat model was induced using the suture method,with male SD rats randomly assigned to sham surgery,model,and 6-shogaol groups.Improved neurological function scoring was conducted 72 hours post-CIRI,accompanied by Triphenyltet-razolium chloride(TTC)staining.Post-scoring,brain tissue specimens were collected for hematoxylin-eosin(HE)staining to observe neuronal pathological damage.Transmission electron microscopy was utilized to examine neuronal ultrastructure and autophagy.Immu-nofluorescence was employed for the detection of autophagic markers,and real-time fluorescence quantification,along with protein im-munoblotting,were performed to assess proteins and genes related to autophagy and calcium overload.The results indicate that 6-shog-aol can upregulate miRNA-26a-5p expression,inhibit DAPK1 expression,and alleviate excessive autophagy and calcium overload after CIRI in rats,showcasing its neuroprotective properties.

关键词

脑缺血再灌注损伤/6-姜烯酚/miRNA/DAPK1/自噬/钙超载

Key words

cerebral ischemia-reperfusion injury/6-Shogaol/miRNA/DAPK1/excessive autophagy/calcium overload

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基金项目

贵州省科技厅自然科学计划(黔科合基础-ZK[2023]一般401)

贵州医科大学附属医院博士科研启动基金(gyfybsky2021-65)

出版年

2024
科学技术与工程
中国技术经济学会

科学技术与工程

CSTPCD北大核心
影响因子:0.338
ISSN:1671-1815
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