id author title date pages extension mime words sentences flesch summary cache txt cord-011803-9122f1zc Zhao, Yang The RNA quality control pathway nonsense-mediated mRNA decay targets cellular and viral RNAs to restrict KSHV 2020-07-03 .txt text/plain 8355 493 50 Collectively, our study describes an intricate relationship between cellular targets of an RNA quality control pathway and KSHV lytic gene expression, and demonstrates that NMD can function as a cell intrinsic restriction mechanism acting upon DNA viruses. EJCs are deposited at the exon-exon junction, thus we determined whether the EJC component eukaryotic translation initiation factor 4A3 (eIF4A3) is associated with spliced KSHV RNAs. To test EJC association with KSHV transcripts we performed eIF4A3 formaldehyde crosslinking RNA immunoprecipitation (fRIP) coupled to reverse transcription quantitative PCR (RT-qPCR) on lytic iSLK.219 and TREx-BCBL-RTA cells (Fig. 1g, h) . Leveraging p-UPF1 fRIP-seq we identified NMD targets transcriptome-wide in both latent and lytic PEL cells and targets include both host and viral RNAs. Remarkably, the mRNA encoding RTA, the master transcription factor governing KSHV reactivation, is targeted by NMD via its 3′UTR and silencing of UPF1 is sufficient to potentiate RTA-mediated transactivation. ./cache/cord-011803-9122f1zc.txt ./txt/cord-011803-9122f1zc.txt