中国寄生虫学与寄生虫病杂志

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多房棘球绦虫apomucin基因qPCR引物的筛选及潜在应用

苏梦1,2,郭小腊2,杨静2,邵忠伟2,丁军涛3,项海涛1,骆学农2,4,郑亚东2,4,孙晓林1*   

  1. 1甘肃农业大学动物医学院,兰州730070;2 中国农业科学院兰州兽医研究所,家畜疫病病原生物学国家重点实验室,甘肃动物寄生虫病重点实验室,兰州730046;3 新疆大学生命科学与技术学院,乌鲁木齐830046;4 江苏省动物重要疫病与人兽共患病防控协同创新中心,扬州225009
  • 出版日期:2016-10-30 发布日期:2016-11-09

Screening and Applications of qPCR Primers for apomucin Gene of Echinococcus multilocularis

SU Meng1,2, GUO Xiao-la2, YANG Jing2, SHAO Zhong-wei2, DING Jun-tao3, XIANG Hai-tao1, LUO Xue-nong2,4, ZHENG Ya-dong2,4, SUN Xiao-lin1*   

  1. 1 College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China;2 State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Science, Lanzhou 730046, China;3 College of Life Science and Technology, Xinjiang University, Urumqi 830046, China;4 Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China
  • Online:2016-10-30 Published:2016-11-09

摘要: 目的 筛选多房棘球绦虫(Echinococcus multilocularis)apomucin基因(Em-apo)的qPCR最佳引物,探索该基因的表达水平。 方法 根据GeneDB中4种Em-apo序列,设计引物并通过荧光定量PCR(qPCR)对引物进行分析,确定每对引物的特异性、PCR扩增效率。利用筛选得到的最佳引物,分别检测经阿苯达唑(5 μg/ml)和胰岛素(100 ng/ml)培养处理的多房棘球绦虫原头节(1 000个)Em-apo表达水平的变化,用稀释阿苯达唑的DMSO和胰岛素的PBS作为各自的对照。 结果 筛选分别得到了Em-apo-1、Em-apo-2/3、Em-apo-4和内参基因actin的特异引物各1对,qPCR熔解曲线分析结果显示,每对引物的扩增产物只出现单峰,且扩增效率均为95%~101%。qPCR分析结果显示,与DMSO对照组(1.00)相比,多房棘球绦虫原头节经阿苯达唑处理后,Em-apo-1、Em-apo-2/3和Em-apo-4的表达水平均有所上升,分别为1.51±0.27、1.39±0.30和1.14±0.18,三者差异无统计学意义(P>0.05);与PBS对照组(1.00)相比,原头节经胰岛素处理后,Em-apo表达水平的变化不一,其中Em-apo-1的表达水平基本不变,Em-apo-4的表达水平有所下降,而Em-apo-2/3明显下调(0.73±0.09),但三者差异无统计学意义(P>0.05)。 结论 本实验筛选确定的Em-apo基因的qPCR引物特异,可用于Em-apo基因表达水平的检测。多房棘球绦虫原头节经阿苯达唑和胰岛素处理后,对Em-apo-1、Em-apo-2/3和Em-apo-4的表达水平有一定的影响。

关键词: 多房棘球绦虫, apomucin基因, qPCR, 阿苯达唑, 胰岛素

Abstract: Objective To screen for the optimal qPCR primers for Echinococcus multilocularis apomucin gene(Em-apo) and analyze Em-apo expression. Methods Primers were designed based on 4 Em-apo sequences from GeneDB. Primer specificity and PCR efficiency were determined, based on which the optimal primer pairs were selected. Alterations of Em-apo expression in 1 000 E. multilocularis protoscoleces treated with albendazole(5 μg/ml) and insulin(100 ng/ml) were separately assessed using the selected primers. DMSO used in albendazole dilution and in PBS insulin dilution were used as the control. Results Specific primers for Em-apo-1, Em-apo-2/3, Em-apo-4 and actin were selected. qPCR melting curves revealed a single peak for each primer pair and an amplification efficiency from 95% to 101%. The qPCR showed increased expression of Em-apo-1(1.51±0.27), Em-apo-2/3 (1.39±0.30) and Em-apo-4(1.14±0.18) after albendazole treatment in comparison to the DMSO control(1.00)(P>0.05 among the three genes); and an unaltered Em-apo-1 expression, slightly decreased Em-apo-4 expression, and significantly decreased Em-apo-2/3 expression(0.73±0.09) after insulin treatment in comparison to the PBS control(P>0.05 among the three genes). Conclusion The selected specific primers for Em-apo genes can be used to analyze the gene expression by qPCR. Treatment with albendazole and insulin show certain effects on the expression of Em-apo genes in E. multilocularis protoscoleces.

Key words: Echinococcus multilocularis, apomucin gene, qPCR, Albendazole, Insulin