Direct RNA sequencing on nanopore arrays redefines the transcriptional complexity of a viral pathogen

Nat Commun. 2019 Feb 14;10(1):754. doi: 10.1038/s41467-019-08734-9.

Abstract

Characterizing complex viral transcriptomes by conventional RNA sequencing approaches is complicated by high gene density, overlapping reading frames, and complex splicing patterns. Direct RNA sequencing (direct RNA-seq) using nanopore arrays offers an exciting alternative whereby individual polyadenylated RNAs are sequenced directly, without the recoding and amplification biases inherent to other sequencing methodologies. Here we use direct RNA-seq to profile the herpes simplex virus type 1 (HSV-1) transcriptome during productive infection of primary cells. We show how direct RNA-seq data can be used to define transcription initiation and RNA cleavage sites associated with all polyadenylated viral RNAs and demonstrate that low level read-through transcription produces a novel class of chimeric HSV-1 transcripts, including a functional mRNA encoding a fusion of the viral E3 ubiquitin ligase ICP0 and viral membrane glycoprotein L. Thus, direct RNA-seq offers a powerful method to characterize the changing transcriptional landscape of viruses with complex genomes.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell Line
  • Cells, Cultured
  • Epithelial Cells / virology
  • Fibroblasts / virology
  • Genes, Viral / genetics*
  • Genome, Viral / genetics
  • Herpesvirus 1, Human / genetics*
  • Herpesvirus 1, Human / physiology
  • Host-Pathogen Interactions
  • Humans
  • Nanopores*
  • Neurons / cytology
  • Neurons / virology
  • RNA, Viral / genetics
  • Sequence Analysis, RNA / methods*
  • Transcriptome / genetics*
  • Viral Proteins / genetics

Substances

  • RNA, Viral
  • Viral Proteins