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南京医科大学学报(自然科学版) 第41卷第8期
·1178 · Journal of Nanjing Medical University(Natural Sciences) 2021年8月
·临床医学·
氯吡格雷低反应冠心病患者血小板miRNA表达谱差异
李济民 ,朱 辉 ,徐 可 ,王 飞 ,杨 璐 ,叶泽康 ,谈楚楚 ,顾 倩 ,王 静 ,李春坚 1*
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南京医科大学第一附属医院心脏科,江苏 南京 210029;阜阳市第五人民医院心血管内科二病区,安徽 阜阳 236000;
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3 南京医科大学附属常州第二人民医院老年病科,江苏 常州 213000
[摘 要] 目的:探讨氯吡格雷低反应(clopidogrel low response,CLR)与正常反应的冠心病(coronary artery disease,CAD)患者
血小板miRNA表达谱的差异。方法:连续入选78例接受氯吡格雷治疗(负荷剂量300 mg,维持剂量75 mg/d)至少5 d的冠心病
患者,通过光学血小板聚集仪检测所有患者二磷酸腺苷诱导的血小板聚集率(platelet aggregation induced by adenosine diphos⁃
phate,PLADP ),PLADP大于上四分位数的19例患者为CLR组,小于下四分位数的19例患者为对照组。提取所有入选患者纯化血
小板中的总RNA,将上述两组患者的总RNA分别混为2个总RNA池,通过RNA变性电泳质检后,采用高通量测序筛选两组患
者血小板 miRNA 的差异表达谱。通过靶基因预测软件 TargetScan、miRanda、PITA 和 miRWalk 对差异 miRNA 的功能进行预
测。结果:两组患者临床基线资料无统计学意义。CLR组PLADP显著高于对照组(P < 0.000 1)。通过RNA变性电泳检测两
组总RNA未见明显降解。高通量测序发现95种血小板miRNA表达上存在显著差异,其中显著性下调且差异倍数>2的拷贝数
前20 位miRNA依次是hsa⁃miR⁃300、hsa⁃miR⁃151b、hsa⁃miR⁃1299等。通过至少2个靶基因预测软件印证8个miRNA(hsa⁃miR⁃
188⁃5p、hsa⁃miR⁃6874⁃3p、hsa⁃miR⁃218⁃5p、hsa⁃miR⁃3150b⁃3p、hsa⁃miR⁃1288⁃3p、hsa⁃miR⁃1299、hsa⁃miR⁃6862⁃5p、hsa⁃miR⁃4421)
对血小板聚集关键蛋白有调控作用。结论:CLR患者中存在血小板miRNA的显著下调,本研究筛选出8个对血小板聚集关键
蛋白可能有调控作用的miRNA,可能成为个体化抗血小板治疗提供新的干预手段。
[关键词] 冠心病;氯吡格雷低反应性;血小板;微小RNA;表达谱
[中图分类号] R541.4 [文献标志码] A [文章编号] 1007⁃4368(2021)08⁃1178⁃07
doi:10.7655/NYDXBNS20210811
Differential expression profile of platelet miRNA in patients with coronary artery disease
and clopidogrel low response
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LI Jimin ,ZHU Hui ,XU Ke ,WANG Fei ,YANG Lu ,YE Zekang ,TAN Chuchu ,GU Qian ,WANG Jing ,LI
Chunjian 1*
1 Department of Cardiology,the First Affiliated Hospital of Nanjing Medical University,Nanjing 210029;
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Cardiovascular Second Area,Fuyang Fifth People’s hospital,Fuyang 236000;Department of Geriatrics,the
Affiliated Changzhou No.2 People’s Hospital of Nanjing Medical University,Changzhou 213000,China
[Abstract] Objective: This study aims to detect the differential expression profile of platelet miRNAs(miRNA)in patients with
coronary artery disease(CAD)and clopidogrel low response(CLR). Methods:A total of 78 CAD patients with clopidogrel treatment
(loading dose 300 mg and maintenance dose 75 mg/d)at least 5 days were consecutively enrolled. Adenosine diphosphate(ADP)
induced platelet aggregation(PLADP )was tested by light transmittance aggregation(LTA). Nineteen patients whose PLADP were at
upper quartile were defined as CLR group,while another nineteen patients at lower quartile were selected as control. The total RNA of
leukocyte depleted platelet(LDP)were extracted from each of the selected patients,and the extracted total RNA from the two groups
were mixed into two RNA pools respectively. After two RNA pools were qualified by RNA denaturation electrophoresis,the differential
expression profiles of platelet miRNAs were screened by high⁃throughput sequencing. The target gene predicting software including
TargetScan,miRanda,PITA and miRWalk were adopted to explore the miRNAs that modulate the key protein in the process of platelet
aggregation. Results:Baseline clinical characteristics of the two groups showed no significant difference. The PLADP level of the CLR
[基金项目] 国家自然科学基金(81170181);江苏省医学重点人才(ZDRCA2016013)
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通信作者(Corresponding author),E⁃mail: lijay@njmu.edu.cn