Acta Veterinaria et Zootechnica Sinica ›› 2024, Vol. 55 ›› Issue (7): 3255-3260.doi: 10.11843/j.issn.0366-6964.2024.07.043

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Establishment and Preliminary Application of Recombinase-mediated Amplification-sidestream Detection for Detection of Mycobacterium paratuberculosis

Yue NAN(), Meizhen LONG(), Yuanzhi WANG, Yiduo LIU, Xiangmei ZHOU*()   

  1. National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
  • Received:2023-10-07 Online:2024-07-23 Published:2024-07-24
  • Contact: Xiangmei ZHOU E-mail:2965008308@qq.com;1727293215@qq.com;zhouxm@cau.edu.cn

Abstract:

To establish a rapid and accurate method for detection of Mycobacterium avium subsp. paratuberculosis (MAP), primers and probes were designed according to the specific multicopy insert element IS900 of MAP. A recombinase-aid amplification combined with lateral flow dipstick (RAA-LFD) method was established for visual detection of MAP in the field within 30 min at 35 ℃ after being optimized. The assay was specific with the target sequence of MAP with a detection limit up to 10 fg·μL-1. One hundred and forty-nine stool samples were tested by this method, showing 100% sensitivity with the PCR. In short, the RAA-LFD assay developed in this study was a rapid, reliable method which can be broadly used.

Key words: Mycobacterium avium subsp. paratuberculosis, recombinase-aid amplification, lateral flow dipstick

CLC Number: