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Antigen-specific Fab profiling achieves molecular-resolution analysis of human autoantibody repertoires in rheumatoid arthritis

Author

Listed:
  • Eva Maria Stork

    (Leiden University Medical Center, Albinusdreef 2)

  • Danique M. H. Rijswijck

    (Padualaan 8
    Padualaan 8)

  • Karin A. Schie

    (Leiden University Medical Center, Albinusdreef 2)

  • Max Hoek

    (Padualaan 8
    Padualaan 8)

  • Theresa Kissel

    (Leiden University Medical Center, Albinusdreef 2)

  • Hans Ulrich Scherer

    (Leiden University Medical Center, Albinusdreef 2)

  • Tom W. J. Huizinga

    (Leiden University Medical Center, Albinusdreef 2)

  • Albert J. R. Heck

    (Padualaan 8
    Padualaan 8)

  • Rene E. M. Toes

    (Leiden University Medical Center, Albinusdreef 2)

  • Albert Bondt

    (Padualaan 8
    Padualaan 8)

Abstract

The presence of autoantibodies is a defining feature of many autoimmune diseases. The number of unique autoantibody clones is conceivably limited by immune tolerance mechanisms, but unknown due to limitations of the currently applied technologies. Here, we introduce an autoantigen-specific liquid chromatography-mass spectrometry-based IgG1 Fab profiling approach using the anti-citrullinated protein antibody (ACPA) repertoire in rheumatoid arthritis (RA) as an example. We show that each patient harbors a unique and diverse ACPA IgG1 repertoire dominated by only a few antibody clones. In contrast to the total plasma IgG1 antibody repertoire, the ACPA IgG1 sub-repertoire is characterised by an expansion of antibodies that harbor one, two or even more Fab glycans, and different glycovariants of the same clone can be detected. Together, our data indicate that the autoantibody response in a prominent human autoimmune disease is complex, unique to each patient and dominated by a relatively low number of clones.

Suggested Citation

  • Eva Maria Stork & Danique M. H. Rijswijck & Karin A. Schie & Max Hoek & Theresa Kissel & Hans Ulrich Scherer & Tom W. J. Huizinga & Albert J. R. Heck & Rene E. M. Toes & Albert Bondt, 2024. "Antigen-specific Fab profiling achieves molecular-resolution analysis of human autoantibody repertoires in rheumatoid arthritis," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47337-x
    DOI: 10.1038/s41467-024-47337-x
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