PMID- 30879321 OWN - NLM STAT- MEDLINE DCOM- 20190726 LR - 20190726 IS - 0001-723X (Print) IS - 0001-723X (Linking) VI - 63 IP - 1 DP - 2019 TI - Phospholipase C signaling is involved in porcine reproductive and respiratory syndrome virus infection in cell cultures. PG - 117-120 LID - 10.4149/av_2019_115 [doi] AB - The phospholipase C (PLC) is a family of kinases that hydrolyze phosphatidylinositol 4,5-bisphosphate [PI(4,5)P2] to generate two second messengers, inositol 1,4,5-trisphosphate (IP3) and diacylglycerol (DAG), which stimulate distinct downstream signaling. Recently, it has been reported that PLC signaling is activated by multiple viruses for efficient replication and the virus-induced inflammatory response. In this study, we demonstrated that PLC-specific inhibitor U73122 strongly suppressed porcine reproductive and respiratory syndrome virus (PRRSV) productive infection in cell cultures. The inhibitor affected both viral post-binding cell entry and post-entry processes. The virus infection led to an early transient activation of PLCgamma-1 at 0.5 h post-infection (hpi), and sustained event at a stage from 4 to 16 hpi in MARC-145 cells. In addition, U73122 inhibited the activation of p38 MAPK signaling stimulated by PRRSV infection, suggesting that PLC signaling may be associated with the virus infection-induced inflammatory response. Taken together, these studies suggested that PLC signaling played an important role in PRRSV infection or pathogenesis. Keywords: PRRSV; U73122; phospholipase C; PLCgamma-1. FAU - Yuan, W F AU - Yuan WF FAU - Chen, Q AU - Chen Q FAU - Gao, X T AU - Gao XT FAU - Zheng, Z M AU - Zheng ZM FAU - Jia, H AU - Jia H FAU - Zhu, H F AU - Zhu HF FAU - Xin, T AU - Xin T FAU - Sui, X K AU - Sui XK FAU - Li, M AU - Li M FAU - Hou, S H AU - Hou SH FAU - Guo, X Y AU - Guo XY LA - eng PT - Journal Article PL - Slovakia TA - Acta Virol JT - Acta virologica JID - 0370401 RN - 0 (Estrenes) RN - 0 (Phosphodiesterase Inhibitors) RN - 0 (Pyrrolidinones) RN - 112648-68-7 (1-(6-((3-methoxyestra-1,3,5(10)-trien-17-yl)amino)hexyl)-1H-pyrrole-2,5-dione) RN - EC 3.1.4.- (Type C Phospholipases) MH - Animals MH - Cell Line MH - Estrenes/pharmacology MH - Phosphodiesterase Inhibitors/pharmacology MH - *Porcine Reproductive and Respiratory Syndrome/physiopathology MH - *Porcine respiratory and reproductive syndrome virus MH - Pyrrolidinones/pharmacology MH - Signal Transduction MH - Swine MH - *Type C Phospholipases/antagonists & inhibitors/physiology MH - Virus Internalization/drug effects EDAT- 2019/03/19 06:00 MHDA- 2019/07/28 06:00 CRDT- 2019/03/19 06:00 PHST- 2019/03/19 06:00 [entrez] PHST- 2019/03/19 06:00 [pubmed] PHST- 2019/07/28 06:00 [medline] AID - 10.4149/av_2019_115 [doi] PST - ppublish SO - Acta Virol. 2019;63(1):117-120. doi: 10.4149/av_2019_115.