吉林大学学报(医学版) ›› 2023, Vol. 49 ›› Issue (2): 460-466.doi: 10.13481/j.1671-587X.20230222

• 临床研究 • 上一篇    下一篇

急性髓系白血病患者外周血外泌体中miR-4286表达水平检测及其诊断价值

全海薇1,张亚丽1,王涵1,艾一玖2,邹雨彤1,夏薇1()   

  1. 1.北华大学医学技术学院血液检验教研室,吉林 吉林 132013
    2.北华大学附属医院血液科,吉林 吉林 132011
  • 收稿日期:2022-05-22 出版日期:2023-03-28 发布日期:2023-04-24
  • 通讯作者: 夏薇 E-mail:xiawei4016@126.com
  • 作者简介:全海薇(1996-),女,内蒙古自治区通辽市人,在读硕士研究生,主要从事医学检验方面的研究。
  • 基金资助:
    吉林省科技厅科技发展计划项目(20200403118SF);吉林省教育厅大学生创新创业训练项目(202010201066)

Detection of expression level of miR-4286 in exosome in peripheral blood of patients with acute myeloid leukemia and its diagnostic value

Haiwei QUAN1,Yali ZHANG1,Han WANG1,Yijiu AI2,Yutong ZOU1,Wei XIA1()   

  1. 1.Department of Blood Test, School of Medical Technology, Beihua University, Jilin 132013, China
    2.Department of Hematology, Affiliated Hospital, Beihua University, Jilin 132011, China
  • Received:2022-05-22 Online:2023-03-28 Published:2023-04-24
  • Contact: Wei XIA E-mail:xiawei4016@126.com

摘要:

目的 检测急性髓系白血病(AML)患者外周血中外泌体miR-4286的表达情况,阐明miR-4286在AML诊断中的价值 方法 收集45例AML初诊患者(AML组)和35名同期健康体检者(对照组)外周血标本,利用超速离心法提取外周血中外泌体,离心产物分别采用透射电子显微镜(TEM)观察形态,纳米颗粒示踪分析(NTA)法检测粒子直径,Western blotting法检测表面标志物CD63和CD9蛋白的表达情况;采用实时荧光定量PCR(RT-qPCR)法检测2组受试者外泌体中miR-4286表达水平;利用受试者工作特征(ROC)曲线计算曲线下面积(AUC),分析miR-4286诊断AML的灵敏度和特异度。 结果 TEM观察,提取的外周血外泌体为外观圆形、中间凹陷的膜状结构,直径为30~100 nm;NTA法,外泌体颗粒直径主要分布在30~150 nm;Western blotting法检测外泌体均表达CD63和CD9蛋白,具备外泌体的典型特征。RT-qPCR法,AML组患者外周血中外泌体miR-4286表达水平明显高于对照组(Z=-5.543,P<0.01)。ROC曲线分析,当外泌体中miR-4286表达水平以3.182为临界值时,AUC为0.862 9(95%CI:0.774 7,0.937 1,P<0.01),灵敏度为66.67%,特异度为97.14%,具有良好的诊断效能。 结论 外周血外泌体中miR-4286对AML的诊断效能较高,可作为AML的诊断标志物,具有较高的临床诊断价值。

关键词: 急性髓系白血病, 外泌体, 微小RNA-4286, 诊断效能, 生物标志物

Abstract:

Objective To detect the expression of miR-4286 in exosome in peripheral blood of the patients with acute myeloid leukemia(AML), and to clarify the value of miR-4286 in the diagnosis of AML. Methods The peripheral blood samples from 45 newly diagnosed patients with AML (AML group) and 35 concurrent healthy subjects(control group) were collected.The exosomes from serum of the subjects in two groups were obtained by over speend contrifugation; the morphology of the centrifuged products was observed under transmission electron microscope(TEM);and the particle diameter was detected by nanoparticle tracink analysis(NTA); the expressions of surface markers CD63 and CD9 proteins were analyzed by Western blotting method;the expression levels of miR-4286 in exosome of the subjects in two groups were detected by real-time fluorescence quantitative PCR(RT-qPCR) method;the receiver operating characteristic (ROC) curve was used to calculate the area under curve (AUC); the sensitivity and specificity of miR-4286 in the diagnosis of AML were analyzed. Results The TEM results showed that the extracted exosomes in peripheral blood showed a membrane structure with roundness in apperance and concave in the middle, and the diameter was about 30-100 nm;the NTA results showed that the particle sizes of exosomes were mainly distributed at 30-150 nm;the Western blotting results showed that the exosomes all expressed CD63 and CD9 proteins,with the typical characteristics of the exosomes.The RT-qPCR results showed that the expression level of exosome miR-4286 in peripheral blood of the patients in AML group was significantly higher than that in control group(Z=-5.543,P<0.01). The ROC curve analysis showed that when the critical value of expression level of miR-4286 in exosome was 3.182, the AUC was 0.862 9(95%CI:0.774 7,0.937 1, P<0.01), the sensitivity was 66.67%,the specificity was 97.14%,and the diagnostic efficacy was good. Conclusion The miR-4286 in exosome in peripheral blood has high diagnostic efficiency for AML;it can be used as a diagnostic marker for AML, and has high clinical diagnostic value.

Key words: Acute myeloid leukemia, Exosome, microRNA-4286, Diagnostic efficacy, Biomarker

中图分类号: 

  • R446.11