《BioRxiv,3月14日,The architecture of SARS-CoV-2 transcriptome》

  • 来源专题:COVID-19科研动态监测
  • 编译者: zhangmin
  • 发布时间:2020-03-15
  • The architecture of SARS-CoV-2 transcriptome

    Dongwan Kim, Joo-Yeon Lee, Jeong-Sun Yang, Jun Won Kim, V. Narry Kim, Hyeshik Chang

    doi: https://doi.org/10.1101/2020.03.12.988865

    Abstract

    SARS-CoV-2 is a betacoronavirus that is responsible for the COVID-19 pandemic. The genome of SARS-CoV-2 was reported recently, but its transcriptomic architecture is unknown. Utilizing two complementary sequencing techniques, we here 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 recombination events, both canonical and noncanonical. In addition to the genomic RNA and subgenomic RNAs common in all coronaviruses, SARS-CoV-2 produces a large number of transcripts encoding unknown ORFs with fusion, deletion, and/or frameshift.

    *注,本文为预印本论文手稿,是未经同行评审的初步报告,其观点仅供科研同行交流,并不是结论性内容,请使用者谨慎使用.

  • 原文来源:https://www.biorxiv.org/content/10.1101/2020.03.12.988865v1
相关报告
  • 《CELL,4月8日,The architecture of SARS-CoV-2 transcriptome》

    • 来源专题:COVID-19科研动态监测
    • 编译者:xuwenwhlib
    • 发布时间:2020-04-09
    • The architecture of SARS-CoV-2 transcriptome Authors Dongwan Kim1,2, Joo-Yeon Lee3 , Jeong-Sun Yang3 , Jun Won Kim3 , V. Narry Kim1,2,4,*, and Hyeshik Chang1,2,* DOI: 10.1016/j.cell.2020.04.011 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 here 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.
  • 《BioRxiv,3月7日,Direct RNA sequencing and early evolution of SARS-CoV-2》

    • 来源专题:COVID-19科研动态监测
    • 编译者:zhangmin
    • 发布时间:2020-03-08
    • Direct RNA sequencing and early evolution of SARS-CoV-2 George Taiaroa, Daniel Rawlinson, Leo Featherstone, Miranda Pitt, Leon Caly, Julian Druce, Damian Purcell, Leigh Harty, Thomas Tran, Jason Roberts, Mike Catton, Deborah Williamson, Lachlan Coin, Sebastian Duchene doi: https://doi.org/10.1101/2020.03.05.976167 Abstract The rapid sharing of sequence information as seen throughout the current SARS-CoV-2 epidemic, represents an inflection point for genomic epidemiology. Here we describe aspects of coronavirus evolutionary genetics revealed from these data, and provide the first direct RNA sequence of SARS-CoV-2, detailing coronaviral subgenome-length mRNA architecture. *注,本文为预印本论文手稿,是未经同行评审的初步报告,其观点仅供科研同行交流,并不是结论性内容,请使用者谨慎使用.