PMID- 32183869 OWN - NLM STAT- MEDLINE DCOM- 20210210 LR - 20210210 IS - 1743-422X (Electronic) IS - 1743-422X (Linking) VI - 17 IP - 1 DP - 2020 Mar 17 TI - Isobavachalcone inhibits Pseudorabies virus by impairing virus-induced cell-to-cell fusion. PG - 39 LID - 10.1186/s12985-020-01312-2 [doi] LID - 39 AB - Pseudorabies virus (PRV) is an important pathogen that threatens the global swine industry. Currently, there is no effective drug that can clinically prevent or treat PRV infections. Isobavachalcone (IBC), a natural chalcone compound derived from Psoralea corylifolia, displays multiple biological activities, such as antibacterial, antifungal, and anticancer activities. Recently, it was found that IBC exhibited antiviral activity against an RNA virus, porcine reproductive and respiratory syndrome virus (PRRSV), in vitro. In the current study, we further demonstrated for the first time that IBC has a strong inhibitory effect on PRV. Through a viral luciferase expression assay, we showed that the inhibition step occurs mainly in the late stage of viral replication. Finally, via a cell-to-cell fusion assay, we demonstrated that IBC inhibits PRV by blocking virus-mediated cell fusion. Thus, IBC may be a candidate for further therapeutic evaluation against PRV infection in vivo. FAU - Wang, Yu AU - Wang Y AD - College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150001, China. AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China. FAU - Liu, Tian-Xin AU - Liu TX AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China. FAU - Wang, Tong-Yun AU - Wang TY AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China. FAU - Tang, Yan-Dong AU - Tang YD AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China. tangyandong2008@163.com. FAU - Wei, Ping AU - Wei P AD - College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150001, China. weiping@neau.edu.cn. LA - eng GR - YQ2019C028/Heilongjiang Excellent Youth Fund Project/International GR - 2016YFD0500100/National Key R&D Program/International PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200317 PL - England TA - Virol J JT - Virology journal JID - 101231645 RN - 0 (Antiviral Agents) RN - 0 (Chalcones) RN - 20784-50-3 (isobavachalcone) SB - IM MH - Animals MH - Antiviral Agents/*pharmacology MH - *Cell Fusion MH - Cell Line MH - Chalcones/*pharmacology MH - Herpesvirus 1, Suid/*drug effects MH - Kidney/cytology MH - Swine MH - Virus Replication/*drug effects PMC - PMC7079404 OTO - NOTNLM OT - Antiviral OT - Fusion OT - Isobavachalcone OT - PRV COIS- The authors declare that they have no competing interests. EDAT- 2020/03/19 06:00 MHDA- 2021/02/11 06:00 PMCR- 2020/03/17 CRDT- 2020/03/19 06:00 PHST- 2020/01/21 00:00 [received] PHST- 2020/03/06 00:00 [accepted] PHST- 2020/03/19 06:00 [entrez] PHST- 2020/03/19 06:00 [pubmed] PHST- 2021/02/11 06:00 [medline] PHST- 2020/03/17 00:00 [pmc-release] AID - 10.1186/s12985-020-01312-2 [pii] AID - 1312 [pii] AID - 10.1186/s12985-020-01312-2 [doi] PST - epublish SO - Virol J. 2020 Mar 17;17(1):39. doi: 10.1186/s12985-020-01312-2.