Go to JCI Insight
  • About
  • Editors
  • Consulting Editors
  • For authors
  • Alerts
  • Advertising/recruitment
  • Subscribe
  • Contact
  • Current Issue
  • Past Issues
  • By specialty
    • COVID-19
    • Cardiology
    • Gastroenterology
    • Immunology
    • Metabolism
    • Nephrology
    • Neuroscience
    • Oncology
    • Pulmonology
    • Vascular biology
    • All ...
  • Videos
    • Conversations with Giants in Medicine
    • Author's Takes
  • Reviews
    • View all reviews ...
    • 100th Anniversary of Insulin's Discovery (Jan 2021)
    • Hypoxia-inducible factors in disease pathophysiology and therapeutics (Oct 2020)
    • Latency in Infectious Disease (Jul 2020)
    • Immunotherapy in Hematological Cancers (Apr 2020)
    • Big Data's Future in Medicine (Feb 2020)
    • Mechanisms Underlying the Metabolic Syndrome (Oct 2019)
    • Reparative Immunology (Jul 2019)
    • View all review series ...
  • Viewpoint
  • Collections
    • Recently published
    • In-Press Preview
    • Commentaries
    • Concise Communication
    • Editorials
    • Viewpoint
    • Top read articles
  • Clinical Medicine
  • JCI This Month
    • Current issue
    • Past issues

  • Current issue
  • Past issues
  • Specialties
  • Reviews
  • Review series
  • Conversations with Giants in Medicine
  • Author's Takes
  • Recently published
  • In-Press Preview
  • Commentaries
  • Concise Communication
  • Editorials
  • Viewpoint
  • Top read articles
  • About
  • Editors
  • Consulting Editors
  • For authors
  • Alerts
  • Advertising/recruitment
  • Subscribe
  • Contact
Top
  • View PDF
  • Download citation information
  • Send a letter
  • Share this article
  • Terms of use
  • Standard abbreviations
  • Need Help? E-mail the JCI
  • Top
  • Abstract
  • Version history
  • Article usage
  • Citations to this article

Advertisement

Research Article Free access | 10.1172/JCI113511

The U2 small nuclear ribonucleoprotein particle as an autoantigen. Analysis with sera from patients with overlap syndromes.

J Craft, T Mimori, T L Olsen, and J A Hardin

Department of Medicine, Yale University School of Medicine, New Haven, Connecticut 06510.

Find articles by Craft, J. in: JCI | PubMed | Google Scholar

Department of Medicine, Yale University School of Medicine, New Haven, Connecticut 06510.

Find articles by Mimori, T. in: JCI | PubMed | Google Scholar

Department of Medicine, Yale University School of Medicine, New Haven, Connecticut 06510.

Find articles by Olsen, T. in: JCI | PubMed | Google Scholar

Department of Medicine, Yale University School of Medicine, New Haven, Connecticut 06510.

Find articles by Hardin, J. in: JCI | PubMed | Google Scholar

Published June 1, 1988 - More info

Published in Volume 81, Issue 6 on June 1, 1988
J Clin Invest. 1988;81(6):1716–1724. https://doi.org/10.1172/JCI113511.
© 1988 The American Society for Clinical Investigation
Published June 1, 1988 - Version history
View PDF
Abstract

We identified eight patients whose sera contained autoantibodies to the U2 small nuclear ribonucleoprotein (snRNP), an RNA protein particle involved in the splicing of newly transcribed messenger RNA. Each of these patients had an overlap syndrome that included features of either systemic lupus erythematosus (SLE), scleroderma, and/or polymyositis. We then used these sera to characterize the autoantigenic polypeptides of the U1 and U2 snRNP particles. In immunoblots, all sera contained antibodies to the B" polypeptide of the U2 snRNP. A subset of these sera that more effectively immunoprecipitated the native U2 particle contained an additional antibody system that recognized the A' polypeptide of this snRNP. Antibodies eluted from the B" protein bound the A polypeptide of the U1 snRNP and vice versa. Moreover, antibodies to the B" polypeptide were accompanied by antibodies to the 68K and C polypeptides of the U1 snRNP. Finally, the A' and B" polypeptides remained physically associated after the U2 particle was cleaved with RNase. Thus these sera contain multiple autoantibody systems that, at one level, target two physically associated antigenic polypeptides of the U2 particle and, at another, target two snRNP particles which are associated during the splicing of premessenger RNA. These linked autoantibody sets provide further evidence that intact macromolecular structures are targeted by the immune response in SLE and related diseases.

Images.

Browse pages

Click on an image below to see the page. View PDF of the complete article

icon of scanned page 1716
page 1716
icon of scanned page 1717
page 1717
icon of scanned page 1718
page 1718
icon of scanned page 1719
page 1719
icon of scanned page 1720
page 1720
icon of scanned page 1721
page 1721
icon of scanned page 1722
page 1722
icon of scanned page 1723
page 1723
icon of scanned page 1724
page 1724
Version history
  • Version 1 (June 1, 1988): No description

Article tools

  • View PDF
  • Download citation information
  • Send a letter
  • Share this article
  • Terms of use
  • Standard abbreviations
  • Need Help? E-mail the JCI

Metrics

  • Article usage
  • Citations to this article

Go to

  • Top
  • Abstract
  • Version history
Advertisement
Advertisement
Follow JCI:
Copyright © 2021 American Society for Clinical Investigation
ISSN: 0021-9738 (print), 1558-8238 (online)

Sign up for email alerts