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IJBB Vol.44 [2007] >
IJBB Vol.44(3) [June 2007] >


Title: Oral and parenteral immunization with synthetic retro-inverso peptides induce antibodies that cross-react with native peptides and parent antigens
Authors: Fischer, Peter
Comis, Alfio
Tyler, Margaret
Howden, Merlin
Keywords: Retro-inverso peptides
Immunogenicity
Cross-reactivity
Oral immunization
Synthetic vaccines
Issue Date: Jun-2007
Publisher: CSIR
Abstract: The objective of this study was to determine whether certain retro-inverso peptides have the potential to act as synthetic vaccines in mice, when immunized by injection or orally. Immunization of mice parenterally with conjugates of three such retro-inverso peptides and orally with the unconjugated peptides elicited generally high titres of anti-peptide antibodies. Antibodies against the same three peptides cross-reacted by binding strongly in ELISA to the native peptides and vice versa, regardless of the mode of immunization. Antibodies against a retro-inverso diphtheria peptide also reacted strongly with diphtheria toxin. Seven of 8 mice, immunized by injection of the conjugate of a retro-inverso derivative of robustoxin [a lethal spider (Atrax robustus) venom toxin] were protected from challenge involving injection with twice the minimum lethal dose of A. robustus venom containing the toxin.
Page(s): 140-144
ISSN: 0301-1208
Source:IJBB Vol.44(3) [June 2007]

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