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The Architecture of SARS-CoV-2 Transcriptome

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Title
The Architecture of SARS-CoV-2 Transcriptome
Author(s)
Dongwan Kim; Joo-Yeon Lee; Jeong-Sun Yang; Jun Won Kim; V. Narry Kim; Hyeshik Chang
Subject
coronavirus, ; COVID-19, ; direct RNA sequencing, ; discontinuous transcription, ; epitranscriptome, ; nanopore, ; poly(A) tail, ; RNA modification, ; SARS-CoV-2, ; transcriptome
Publication Date
2020-05
Journal
CELL, v.181, no.4, pp.914 - 921
Publisher
CELL PRESS
Abstract
© 2020 Elsevier Inc. The SARS-CoV-2 transcriptome and epitranscriptome reveal a complex array of canonical and non-canonical viral transcripts with RNA modifications. © 2020 Elsevier Inc.SARS-CoV-2 is a betacoronavirus responsible for the COVID-19 pandemic. Although the SARS-CoV-2 genome was reported recently, its transcriptomic architecture is unknown. Utilizing two complementary sequencing techniques, we present a high-resolution map of the SARS-CoV-2 transcriptome and epitranscriptome. DNA nanoball sequencing shows that the transcriptome is highly complex owing to numerous discontinuous transcription events. In addition to the canonical genomic and 9 subgenomic RNAs, SARS-CoV-2 produces transcripts encoding unknown ORFs with fusion, deletion, and/or frameshift. Using nanopore direct RNA sequencing, we further find at least 41 RNA modification sites on viral transcripts, with the most frequent motif, AAGAA. Modified RNAs have shorter poly(A) tails than unmodified RNAs, suggesting a link between the modification and the 3′ tail. Functional investigation of the unknown transcripts and RNA modifications discovered in this study will open new directions to our understanding of the life cycle and pathogenicity of SARS-CoV-2
URI
https://pr.ibs.re.kr/handle/8788114/8628
DOI
10.1016/j.cell.2020.04.011
ISSN
0092-8674
Appears in Collections:
Center for RNA Research(RNA 연구단) > 1. Journal Papers (저널논문)
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