Novel antibodies reacting with two neighboring gangliosides are induced in rabbits immunized with bovine brain gangliosides

Ana L. Moyano, Romina Comín, Aldo A. Vilcaes, Samanta C. Funes, Germán A. Roth, Fernando J. Irazoqui, Gustavo A. Nores

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Immunization of rabbits with bovine brain gangliosides induced an experimental neuropathy, with clinical signs resembling Guillain-Barré syndrome. All the immunized animals developed immunoglobulin G immunoreactivity to GM1 ganglioside. In a few (4 of 27) animals, an additional anti-ganglioside antibody population showing an unusual binding behavior was detected. Enzyme-linked immunosorbent assay and thin-layer chromatography immunostaining analyses showed that the binding of these unusual antibodies required the presence of two co-localized gangliosides. Maximal interaction was observed to a mixture of GM1 and GD1b, but the antibodies also showed density-dependent binding to GD1b. The antibodies were purified by affinity chromatography and displayed the ability to target antigens in biological membranes (rat synaptosomes).

Original languageEnglish (US)
Pages (from-to)1768-1774
Number of pages7
JournalGlycobiology
Volume22
Issue number12
DOIs
StatePublished - Dec 2012

Keywords

  • density-dependent binding
  • experimental neuropathy
  • ganglioside complex
  • gangliosides

ASJC Scopus subject areas

  • Biochemistry

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