Regulation of the gene promoter of Cyprinid herpesvirus 2 by the transcription factor NF-κB
In order to investigate the mechanism of NF-κB in enhancing CyHV-2 replication,transcriptional and translational levels of CyHV-2 genes at 24,72 and 96 h post CyHV-2 infection in the presence of NF-κB agonist were monitored by RT-qPCR and Western Blot assays.The results showed that the transcriptional levels and protein levels of CyHV-2 genes were increased at 72 and 96 h in the presence of NF-κB agonist.To further elucidate how NF-κB affects the transcription and translation of CyHV-2,the binding sites of the promoter region for NF-κB were predicted and dual luciferase reporter gene experiments were performed to study the regulatory role of NF-κB on viral gene expression.The experimental results showed that NF-κB overexpression increased CyHV-2 promoter activity,fur-ther suggesting that NF-κB promotes viral replication by activating the promoter of CyHV-2 genes.This study should provide novel strat-egies for anti-CyHV-2 drugs and enhance the understanding of CyHV-2 replication.