On-site Identification of Medicinal Bubali Cornu by Recombinase-mediated Amplification Technique

Hong SHEN; Yuan YUAN; Bi-lian CHEN; Chao LI; Han SUN; Chao JIANG

doi:10.13422/j.cnki.syfjx.20191715

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On-site Identification of Medicinal Bubali Cornu by Recombinase-mediated Amplification Technique

Topic on DNA Molecular Identification of Animal Medicinal Materials | 更新时间：2021-02-09

- On-site Identification of Medicinal Bubali Cornu by Recombinase-mediated Amplification Technique
- Chinese Journal of Experimental Traditional Medical Formulae Vol. 25, Issue 17, Pages: 130-135(2019)
- 作者机构：
  
  1.浙江省食品药品检验研究院，杭州　 310052；
  2.中国中医科学院　中药资源中心，道地药材国家重点实验室培育基地，北京　 100700
- 作者简介：
- 基金信息：
- DOI：10.13422/j.cnki.syfjx.20191715
  CLC： R284.2; R285; R22; R2-031
- Received：19 March 2019，
  
  Published Online：17 May 2019，
  
  Published：05 September 2019
- 稿件说明：
移动端阅览
Hong SHEN, Yuan YUAN, Bi-lian CHEN, et al. On-site Identification of Medicinal Bubali Cornu by Recombinase-mediated Amplification Technique[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(17): 130-135.
DOI：

Hong SHEN, Yuan YUAN, Bi-lian CHEN, et al. On-site Identification of Medicinal Bubali Cornu by Recombinase-mediated Amplification Technique[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(17): 130-135. DOI： 10.13422/j.cnki.syfjx.20191715.

摘要

目的：

以水牛角鉴别为例建立中药重组酶介导扩增(Recombination-aid amplification，RAA)快速鉴别方法，用于水牛角及其混伪品牦牛角的鉴别。

方法：

通过比较水牛角及其混伪品牦牛角基原物种的线粒体基因组序列差异，寻找高变异区域，根据变异位点设计水牛角正品水牛的特异性RAA鉴别引物SNJ-1.F和SNJ-1.R及荧光探针SNJ-1.probe，使用碱裂解法提取DNA，优化RAA反应体系，在37 ℃下恒温孵育15～20 min，通过凝胶电泳及实时荧光监测反应结果，使用DNA测序方法验证RAA鉴别结果的准确性。

结果：

在37 ℃恒温孵育20 min后，水牛角RAA产物凝胶电泳图谱出现约140 bp特异性鉴别条带，使用实时荧光RAA鉴别时，水牛角正品均在6.21～8.37 min出现特异性扩增，牦牛角样品均在10.08 min后才出现扩增，COI片段DNA测序鉴别结果与荧光RAA鉴别结果相吻合。

结论：

特异性RAA技术可在20 min内快速鉴别水牛角，可用于水牛角药材、饮片及其制品的快速现场鉴定。该方法具有简单、快速、无需大型仪器等特点，在中药现场鉴定、药检抽查等方面有着广阔的应用前景。

Abstract

Objective:

To establish a rapid on-site method for identifying Chinese medical material recombinase-mediated amplification (RAA) technology for the use of identifying medicinal Bubali Cornu from yak horn.

Method:

Based on the differences of mitochondrial genome sequences between Bubali Cornu and adulterants

the specific RAA primer (SNJ-1.F

SNJ-1.R) and fluorescence probe SNJ-1.probe were designed by variation sites. Alkaline lysis method was used to extract DNA from milled samples

and optimize RAA reaction system. The incubation was made at 37 ℃ for 15-20 min

the reaction results were monitored through gel electrophoresis and a mobile fluorescence amplification instrument. The RAA identification result was compared with COI DNA sequencing.

Result:

After incubation at 37 ℃ for 20 min

about 140 bp of bright and simple bands was amplified from DNA templates of

Bubalus bubalis

whereas

Bos mutus

were negative. By the Real-time fluorescent RAA identify method

all reactions in DNAs from Bubali Cornu samples were amplified from 6.21 to 8.37 min

whereas DNAs from yak samples were amplified after 10.08 min

COI sequencing results conformed to the Real-time fluorescent RAA identification.

Conclusion:

Specific RAA could rapidly identify Bubali Cornu in 20 minutes

and thus be applied in medical material and its products. This method is simple

rapid and sophisticated instrument-free

with promises in on-site identification of traditional Chinese medicine.

关键词

Keywords

references

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