Chemical Research in Chinese Universities ›› 2014, Vol. 30 ›› Issue (6): 953-958.doi: 10.1007/s40242-014-4133-8

• Articles • Previous Articles     Next Articles

Identification of Cinobufagin and Resibufogenin as Inhibitors of Enterovirus 71 Infection

CHEN Jiawen1, XU Lin1, SUN Shiyang1,2, ZHANG Huafei1,2, MA Tonghui3, SU Weiheng1,2, JIANG Chunlai1,2   

  1. 1. National Engineering Laboratory for AIDS Vaccine, Changchun 130012, P. R. China;
    2. Key Laboratory for Molecular Enzymology & Engineering, Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, P. R. China;
    3. College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, P. R. China
  • Received:2014-04-14 Revised:2014-08-04 Online:2014-12-01 Published:2014-08-13
  • Contact: SU Weiheng, JIANG Chunlai E-mail:suweiheng@jlu.edu.cn;jiangcl@jlu.edu.cn
  • Supported by:

    Supported by the Young Researcher's Grant from the Science and Technology Development Program of Jilin Province of China(No.20140520001JH).

Abstract:

In this paper, cinobufagin and resibufogenin were found to inhibit enterovirus 71(EV71) infection in vitro in cell viability and plaque reduction assays. The 50% inhibitory concentrations(IC50) of cinobufagin and resibufogenin were (10.94±2.36) and (218±31) nmol/L, respectively, the 50% cytotoxic concentrations(CC50) of them were (1277±223) and (1385±254) nmol/L, respectively, and the anti-EV71 selectivity index(SI50) of cinobufagin was 116.7, which are promisingly developed into drug. Using a VP1 detection assay and a constructed reporter luciferase, we found that cinobufagin and resibufogenin disrupted the synthesis of EV71 protein. However, neither of them inhibited EV71 RNA replication. Our study suggests that cinobufagin and resibufogenin are the promising candidates that should be further investigated for the treatment of EV71 caused disease.

Key words: Enterovirus 71, Coxsackievirus A16, Cinobufagin, Resibufogenin, Chansu