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Hereditas(Beijing) ›› 2021, Vol. 43 ›› Issue (12): 1170-1178.doi: 10.16288/j.yczz.21-335

• Technique and Method • Previous Articles     Next Articles

Design and application of lightening Spinach-p54 RNA apatmer to detect African swine fever virus

Chengcheng Han1,2(), Kai Xia1,3, Ruying Gong1, Xuhan Wu1, Lei Zhang1,2(), Xinle Liang1,2()   

  1. 1. School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
    2. Institute of Food Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
    3. School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
  • Received:2021-09-21 Revised:2021-11-30 Online:2021-12-20 Published:2021-12-10
  • Contact: Zhang Lei,Liang Xinle E-mail:707884766@qq.com;zhanglei@zjsu.edu.cn;dbiot@mail.zjgsu.edu.cn

Abstract:

African swine fever virus (ASFV) is a major and prevalent pathogenic virus in livestock. Its outbreak in the recent years has seriously affected the national economic life. In this study, a specific chimeric RNA aptamer Spinach-p54 corresponding to the conserved protein p54 of ASFV, was designed and used in assembling a toehold RNA module with a truncated lightening Spinach switch. They were used to detect the p54 gene. The aptamer bound rapidly and paired specifically with the ASFV p54 target sequence and produced fluorescence with the addition of DFHBI substrate. The results showed that the limit of detection was as low as 200 nmol/L p54 fragment, under the conditions of 200 nmol/L Spinach-p54 aptamer and 37 ℃, suggesting that the current method can provide a simple, specific, sensitive, and rapid on-site detection of ASFV at the RNA level in the markets and farms.

Key words: aptamer, RNA, turn-on, African swine fever viru