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Archives of Virology

, Volume 163, Issue 5, pp 1263–1270 | Cite as

Isobavachalcone inhibits post-entry stages of the porcine reproductive and respiratory syndrome virus life cycle

  • Hai-Ming Wang
  • Tian-Xin Liu
  • Tong-Yun Wang
  • Gang Wang
  • Yong-Gang Liu
  • Si-Guo Liu
  • Yan-Dong Tang
  • Xue-Hui Cai
Original Article

Abstract

Porcine reproductive and respiratory syndrome virus (PRRSV) is a pathogen of great economic significance that impacts the swine industry globally. Since the first report of a porcine reproductive and respiratory syndrome (PRRS) outbreak, tremendous efforts to control this disease, including various national policies and plans incorporating the use of multiple modified live-virus vaccines, have been made. However, PRRSV is still a significant threat to the swine industry, and new variants continually emerge as a result of PRRSV evolution. Several studies have shown that pandemic PRRSV strains have enormous genetic diversity and that commercial vaccines can only provide partial protection against these strains. Therefore, effective anti-PRRSV drugs may be more suitable and reliable for PRRSV control. In this study, we observed that isobavachalcone (IBC), which was first isolated from Psoralea corylifolia, had potent anti-PRRSV activity in vitro. Although many biological activities of IBC have been reported, this is the first report describing the antiviral activity of IBC. Furthermore, after a systematic investigation, we demonstrated that IBC inhibits PRRSV replication at the post-entry stage of PRRSV infection. Thus, IBC may be a candidate for further evaluation as a therapeutic agent against PRRSV infection of swine in vivo.

Notes

Acknowledgements

This study was supported by the National Key R&D Program (grant number 2016YFD0500100) and the National Science Foundation of Heilongjiang (grant number ZD2015006).

Authors’ contributions

Y-D Tang and X-H Cai designed the experiments. H-M Wang and other others performed the experiments. All authors analyzed the data. H-M Wang, Y-D Tang and X-H Cai wrote the manuscript.

Funding

This study was funded by the National Key R&D Program (grant number 2016YFD0500100) and the National Science Foundation of Heilongjiang (grant number ZD2015006).

Compliance with ethical standards

Conflict of interest

The authors declare no conflict of interest.

Ethical approval

The experimental protocols for preparing porcine alveolar macrophages (PAMs) were approved by the Animal Care and Protection Committee of Harbin Veterinary Research Institute of the Chinese Academy of Agricultural Sciences.

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2018

Authors and Affiliations

  • Hai-Ming Wang
    • 1
  • Tian-Xin Liu
    • 1
  • Tong-Yun Wang
    • 1
  • Gang Wang
    • 1
  • Yong-Gang Liu
    • 1
  • Si-Guo Liu
    • 1
  • Yan-Dong Tang
    • 1
  • Xue-Hui Cai
    • 1
  1. 1.State Key Laboratory of Veterinary BiotechnologyHarbin Veterinary Research Institute of the Chinese Academy of Agricultural SciencesHarbinChina

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