Natural antibodies, intravenous immunoglobulin and their role in autoimmunity, cancer and inflammation

R. Schwartz-Albiez, R. C. Monteiro, M. Rodriguez, C. J. Binder, Y. Shoenfeld

Research output: Contribution to journalReview article

90 Scopus citations

Abstract

Natural antibodies are produced by B lymphocytes in the absence of external antigen stimulation. With their ability to recognize self, altered self and foreign antigens, they comprise an important first-line defence against invading pathogens, but are also important for tissue homeostasis. By recognizing oligosaccharides expressed on tumour cells and modified cell surface structures accompanying necrosis, natural antibodies have an important anti-tumorigenic function. IVIg contains a wide spectrum of specificities presented in normal plasma including natural antibodies and has been shown to exert inhibitory effects on tumour cells through a subfraction of anti-vascular endothelial growth factor immunoglobulin (Ig)G antibodies with anti-angiogenic properties. IgA antibodies also have potent immunomodulatory properties, being able to both induce and suppress immune responses. IgA-mediated inhibitory function is able to inhibit several inflammatory diseases including asthma and glomerulonephritis. Autoantibodies of the IgM type, on the other hand, have shown promising results in the treatment of multiple sclerosis. These autoantibodies promote remyelination rather than modulating inflammation. Oxidation-specific epitopes, as found in atherosclerotic lesions and on apoptotic cells, comprise one important target of natural antibodies. By recognizing these epitopes, natural antibodies neutralize proinflammatory responses and mediate atheroprotection.

Original languageEnglish (US)
Pages (from-to)43-50
Number of pages8
JournalClinical and Experimental Immunology
Volume158
Issue numberSUPPL. 1
DOIs
StatePublished - Dec 1 2009

Keywords

  • Atherosclerosis
  • Cancer
  • IgA
  • Multiple sclerosis
  • Oxidation-specific epitopes

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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