The Ro ribonucleoprotein particle

Induction of autoantibodies and the detection of Ro RNAs among species

Mark J. Mamula, Charles A. O'Brien, John B. Harley, John A. Hardin

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

High titers of autoantibody specific for the Ro(SSA) ribonucleoprotein are frequently found in patients with systemic lupus erythematosus and Sjogren's syndrome. In this study we have analyzed the immune responses to the Ro particle when utilized as an immunogen in animal hosts. Anti-Ro autoantibodies which bound autologous Ro ribonucleoprotein particles were induced in rabbits. In immunodiffusion studies using crude rabbit tissue extracts, the rabbit antibody made a precipitin line of identity with a prototype human anti-Ro serum. In solid-phase assays, the human autoimmune serum and the antigen-induced rabbit serum competed for similar or overlapping epitopes on the Ro particle. The rabbit and human sera precipitated the four Ro RNAs from human cells as well as four previously uncharacterized Ro RNAs from a bovine cell line, three Ro RNAs from a rabbit cell line, and two Ro RNAs from duck cells. While total numbers of cellular Ro RNAs differ among species, all possess an RNA of common size which comigrated with the hY1 of human cells.

Original languageEnglish (US)
Pages (from-to)435-446
Number of pages12
JournalClinical Immunology and Immunopathology
Volume52
Issue number3
DOIs
StatePublished - 1989
Externally publishedYes

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Autoantibodies
RNA
Rabbits
Serum
Cell Line
Precipitins
Tissue Extracts
Ducks
Immunodiffusion
Sjogren's Syndrome
Systemic Lupus Erythematosus
SS-A antigen
Epitopes
Antigens
Antibodies

ASJC Scopus subject areas

  • Immunology
  • Immunology and Allergy
  • Pathology and Forensic Medicine

Cite this

The Ro ribonucleoprotein particle : Induction of autoantibodies and the detection of Ro RNAs among species. / Mamula, Mark J.; O'Brien, Charles A.; Harley, John B.; Hardin, John A.

In: Clinical Immunology and Immunopathology, Vol. 52, No. 3, 1989, p. 435-446.

Research output: Contribution to journalArticle

Mamula, Mark J. ; O'Brien, Charles A. ; Harley, John B. ; Hardin, John A. / The Ro ribonucleoprotein particle : Induction of autoantibodies and the detection of Ro RNAs among species. In: Clinical Immunology and Immunopathology. 1989 ; Vol. 52, No. 3. pp. 435-446.
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