China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (9): 3581-3588.doi: 10.16431/j.cnki.1671-7236.2022.09.032

• Basic Veterinary Medicine • Previous Articles     Next Articles

Molecular Docking Prediction of Artemisinin and NS5B Protein of Bovine Viral Diarrhea Virus and Its Antiviral Effect

SHAO Baihui1, JIANG Dongjun3, XIE Yimeng1, LIU Siyu1, SHAO Ziyi1, ZHANG Zecai1,2, JI Hong1, ZHU Zhanbo1,2   

  1. 1. College of Animal Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China;
    2. Heilongjiang Engineering Research Center of Bovine Disease Prevention and Control, Daqing 163319, China;
    3. Shandong Provincial Key Laboratory of Behavioral Medicine, College of Mental Health, Jining Medical College, Jining 272067, China
  • Received:2022-04-20 Online:2022-09-05 Published:2022-08-24

Abstract: 【Objective】 The study was aimed to determine the inhibitory effect of artemisinin on Bovine viral diarrhea virus (BVDV) replication using molecular docking as well as in vitro tests, and provide new ideas for antiviral drug and formulation development.【Method】 BVDV-NS5B protein was used as the target, and the three-dimensional crystal structure of BVDV-NS5B protein was retrieved through the PDB database, and the structure was appropriately modified.The structure of artemisinin from TCMSP database was retrieved, and Autodock software was applied to perform molecular docking and score the binding energy.The maximum safe concentration of artemisinin for MDBK cells was subsequently determined using a CCK-8 kit.The selected concentrations of artemisinin were subjected to gradient dilution, and three different ways of spiking drugs, including adding virus before adding drug, adding drug before adding virus, and the simultaneous action of traditional Chinese medicine and virus, were used for drug antiviral test to determine the optimal drug inhibitory concentration, prophylactic concentration and killing concentration against virus.Real-time quantitative PCR was used to measure the copy number of BVDV under the three modes of drug action to further define the effect of drugs on BVDV replication.【Result】 Molecular docking data indicated that artemisinin interacted with BVDV-NS5B with a binding free energy of -28.6748 kJ/mol.The optimal drug safety concentration of artemisinin on MDBK cells was 100 μmol/L.The three modes of action could effectively affect the replication of BVDV, and artemisinin had the most obvious inhibitory effect on BVDV.【Conclusion】 Artemisinin could interact with the NS5B protein target of BVDV, and could effectively inhibit the replication of BVDV in MDBK cells.This study laid a foundation for the screening of anti BVDV traditional Chinese medicine.

Key words: artemisinin; Bovine viral diarrhea virus (BVDV); antiviral activity; molecular docking; virus replication

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