IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v12y2021i1d10.1038_s41467-021-21921-x.html
   My bibliography  Save this article

ADAR1 RNA editing enzyme regulates R-loop formation and genome stability at telomeres in cancer cells

Author

Listed:
  • Yusuke Shiromoto

    (The Wistar Institute)

  • Masayuki Sakurai

    (The Wistar Institute
    Tokyo University of Science)

  • Moeko Minakuchi

    (The Wistar Institute)

  • Kentaro Ariyoshi

    (The Wistar Institute
    Fukushima Medical University)

  • Kazuko Nishikura

    (The Wistar Institute)

Abstract

ADAR1 is involved in adenosine-to-inosine RNA editing. The cytoplasmic ADAR1p150 edits 3’UTR double-stranded RNAs and thereby suppresses induction of interferons. Loss of this ADAR1p150 function underlies the embryonic lethality of Adar1 null mice, pathogenesis of the severe autoimmune disease Aicardi-Goutières syndrome, and the resistance developed in cancers to immune checkpoint blockade. In contrast, the biological functions of the nuclear-localized ADAR1p110 remain largely unknown. Here, we report that ADAR1p110 regulates R-loop formation and genome stability at telomeres in cancer cells carrying non-canonical variants of telomeric repeats. ADAR1p110 edits the A-C mismatches within RNA:DNA hybrids formed between canonical and non-canonical variant repeats. Editing of A-C mismatches to I:C matched pairs facilitates resolution of telomeric R-loops by RNase H2. This ADAR1p110-dependent control of telomeric R-loops is required for continued proliferation of telomerase-reactivated cancer cells, revealing the pro-oncogenic nature of ADAR1p110 and identifying ADAR1 as a promising therapeutic target of telomerase positive cancers.

Suggested Citation

  • Yusuke Shiromoto & Masayuki Sakurai & Moeko Minakuchi & Kentaro Ariyoshi & Kazuko Nishikura, 2021. "ADAR1 RNA editing enzyme regulates R-loop formation and genome stability at telomeres in cancer cells," Nature Communications, Nature, vol. 12(1), pages 1-18, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21921-x
    DOI: 10.1038/s41467-021-21921-x
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-021-21921-x
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-021-21921-x?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Xingxing Ren & Qiuyuan Liu & Peirong Zhou & Tingyue Zhou & Decai Wang & Qiao Mei & Richard A. Flavell & Zhanju Liu & Mingsong Li & Wen Pan & Shu Zhu, 2024. "DHX9 maintains epithelial homeostasis by restraining R-loop-mediated genomic instability in intestinal stem cells," Nature Communications, Nature, vol. 15(1), pages 1-17, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21921-x. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.