Using PAR-CLIP, a technology which allows the direct and transcriptome-wide identification of miRNA targets, we delineate the target sites for all viral and cellular miRNAs expressed in PEL cell lines. The resulting data set revealed that KSHV miRNAs directly target more than 2000 cellular mRNAs, including many involved in pathways relevant to KSHV pathogenesis. Moreover, 58% of these mRNAs are also targeted by EBV miRNAs, via distinct binding sites.Clusters with seed matches to expressed miRNAs were considered candidate target sites. Of the clusters mapping to human 3'UTRs, 69% (BC-1) and 70% (BC-3) had seed matches to expressed miRNAs (Tables S6).Table S6A BC-1 derived 3'UTR clusters with seed matches to expressed miRNAs.
We identified 7,827 miRNA-interaction sites in 3,492 cellular 3'UTRs. 531 of these sites contained seed matches to viral miRNAs.Table S6: High confidence miRNA-interaction sites in 3'UTRs.We identified an additional 2,972 CDS miRNA-interaction sites present in at least two libraries, 89.7% of which could be assigned to a miRNA (Table S7).
