Immunization with a peptide surrogate for double-stranded DNA (dsDNA) induces autoantibody production and renal immunoglobulin deposition

Chaim Putterman, Betty Diamond

Research output: Contribution to journalArticle

150 Citations (Scopus)

Abstract

Anti-double-stranded DNA (dsDNA) antibodies are the serologic abnormality characteristically associated with systemic lupus erythematosus (SLE) and may play an important role in disease pathogenesis. Although the anti-dsDNA antibodies present in SLE are indicative of an antigen-driven response, the antigen has not been conclusively identified. By screening a phage peptide display library, we demonstrated previously that the decapeptide DWEYSVWLSN is specifically bound by the pathogenic murine IgG2b anti-dsDNA antibody R4A. To investigate the possibility that a protein antigen might trigger lupus-like autoimmunity, we immunized BALB/c mice with DWEYSVWLSN in adjuvant. Mice developed significant titers of IgG anti-dsDNA antibodies 2-3 wk after the initial immunization. Immunized mice also developed antibodies against some other lupus autoantigens, and immunoglobulin deposition was present in renal glomeruli at 49 d. Although an immune response to peptide and dsDNA was evident in BALB/c mice, there was little response in other inbred strains. This study demonstrates that lupus- like anti-dsDNA reactivity can be generated in nonautoimmune mice by immunization with a peptide antigen. Peptide-induced autoimmunity may prove useful in understanding the spreading of antigenic specificities targeted in SLE. However, most importantly, the demonstration that a peptide antigen can initiate a SLE-like immune response opens a new chapter on the potential antigenic stimuli that might trigger SLE.

Original languageEnglish (US)
Pages (from-to)29-38
Number of pages10
JournalJournal of Experimental Medicine
Volume188
Issue number1
DOIs
StatePublished - Jul 6 1998

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Systemic Lupus Erythematosus
Autoantibodies
Immunoglobulins
Immunization
Kidney
Antigens
Peptides
Antibodies
DNA
Autoimmunity
Peptide Library
Autoantigens
Epitopes
Proteins
aspartyl-tryptophyl-glutamyl-tyrosyl-seryl-valyl-tryptophyl-leucyl-seryl-asparagine

Keywords

  • Anti-DNA
  • Autoantibodies
  • Inbred strains
  • Peptide library
  • Systemic lupus erythematosus

ASJC Scopus subject areas

  • Immunology

Cite this

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abstract = "Anti-double-stranded DNA (dsDNA) antibodies are the serologic abnormality characteristically associated with systemic lupus erythematosus (SLE) and may play an important role in disease pathogenesis. Although the anti-dsDNA antibodies present in SLE are indicative of an antigen-driven response, the antigen has not been conclusively identified. By screening a phage peptide display library, we demonstrated previously that the decapeptide DWEYSVWLSN is specifically bound by the pathogenic murine IgG2b anti-dsDNA antibody R4A. To investigate the possibility that a protein antigen might trigger lupus-like autoimmunity, we immunized BALB/c mice with DWEYSVWLSN in adjuvant. Mice developed significant titers of IgG anti-dsDNA antibodies 2-3 wk after the initial immunization. Immunized mice also developed antibodies against some other lupus autoantigens, and immunoglobulin deposition was present in renal glomeruli at 49 d. Although an immune response to peptide and dsDNA was evident in BALB/c mice, there was little response in other inbred strains. This study demonstrates that lupus- like anti-dsDNA reactivity can be generated in nonautoimmune mice by immunization with a peptide antigen. Peptide-induced autoimmunity may prove useful in understanding the spreading of antigenic specificities targeted in SLE. However, most importantly, the demonstration that a peptide antigen can initiate a SLE-like immune response opens a new chapter on the potential antigenic stimuli that might trigger SLE.",
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N2 - Anti-double-stranded DNA (dsDNA) antibodies are the serologic abnormality characteristically associated with systemic lupus erythematosus (SLE) and may play an important role in disease pathogenesis. Although the anti-dsDNA antibodies present in SLE are indicative of an antigen-driven response, the antigen has not been conclusively identified. By screening a phage peptide display library, we demonstrated previously that the decapeptide DWEYSVWLSN is specifically bound by the pathogenic murine IgG2b anti-dsDNA antibody R4A. To investigate the possibility that a protein antigen might trigger lupus-like autoimmunity, we immunized BALB/c mice with DWEYSVWLSN in adjuvant. Mice developed significant titers of IgG anti-dsDNA antibodies 2-3 wk after the initial immunization. Immunized mice also developed antibodies against some other lupus autoantigens, and immunoglobulin deposition was present in renal glomeruli at 49 d. Although an immune response to peptide and dsDNA was evident in BALB/c mice, there was little response in other inbred strains. This study demonstrates that lupus- like anti-dsDNA reactivity can be generated in nonautoimmune mice by immunization with a peptide antigen. Peptide-induced autoimmunity may prove useful in understanding the spreading of antigenic specificities targeted in SLE. However, most importantly, the demonstration that a peptide antigen can initiate a SLE-like immune response opens a new chapter on the potential antigenic stimuli that might trigger SLE.

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