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Lymphoma Driver Mutations in the Pathogenic Evolution of an Iconic Human Autoantibody

  • Mandeep Singh
  • , Katherine J.L. Jackson
  • , Jing J. Wang
  • , Peter Schofield
  • , Matt A. Field
  • , David Koppstein
  • , Timothy J. Peters
  • , Deborah L. Burnett
  • , Simone Rizzetto
  • , Damien Nevoltris
  • , Etienne Masle-Farquhar
  • , Megan L. Faulks
  • , Amanda Russell
  • , Divya Gokal
  • , Asami Hanioka
  • , Keisuke Horikawa
  • , Alexander D. Colella
  • , Timothy K. Chataway
  • , James Blackburn
  • , Tim R. Mercer
  • David B. Langley, D. Margaret Goodall, Roy Jefferis, Muralikrishna Gangadharan Komala, Anthony D. Kelleher, Dan Suan, Maureen Rischmueller, Daniel Christ, Robert Brink, Fabio Luciani, Tom P. Gordon, Christopher C. Goodnow*, Joanne H. Reed
*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    114 Citations (Scopus)

    Abstract

    Pathogenic autoantibodies arise in many autoimmune diseases, but it is not understood how the cells making them evade immune checkpoints. Here, single-cell multi-omics analysis demonstrates a shared mechanism with lymphoid malignancy in the formation of public rheumatoid factor autoantibodies responsible for mixed cryoglobulinemic vasculitis. By combining single-cell DNA and RNA sequencing with serum antibody peptide sequencing and antibody synthesis, rare circulating B lymphocytes making pathogenic autoantibodies were found to comprise clonal trees accumulating mutations. Lymphoma driver mutations in genes regulating B cell proliferation and V(D)J mutation (CARD11, TNFAIP3, CCND3, ID3, BTG2, and KLHL6) were present in rogue B cells producing the pathogenic autoantibody. Antibody V(D)J mutations conferred pathogenicity by causing the antigen-bound autoantibodies to undergo phase transition to insoluble aggregates at lower temperatures. These results reveal a pre-neoplastic stage in human lymphomagenesis and a cascade of somatic mutations leading to an iconic pathogenic autoantibody.

    Original languageEnglish
    Pages (from-to)878-894.e19
    JournalCell
    Volume180
    Issue number5
    DOIs
    Publication statusPublished - 5 Mar 2020

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