Lymphoma Driver Mutations in the Pathogenic Evolution of an Iconic Human Autoantibody.
Cell
; 180(5): 878-894.e19, 2020 03 05.
Article
in En
| MEDLINE
| ID: mdl-32059783
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.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Autoantibodies
/
Autoimmune Diseases
/
B-Lymphocytes
/
Lymphoma
Limits:
Animals
/
Humans
Language:
En
Journal:
Cell
Year:
2020
Document type:
Article
Affiliation country: