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Assessment of synthetic chimeric multiple antigenic peptides for diagnosis of GB virus C infection

AuthorsGómara Elena, María José ; Fernández, Leticia ; Pérez, Teresa; Ercilla, Guadalupe; Haro Villar, Isabel
KeywordsGB virus C
Multiple antigen peptide
Surface plasmon resonance
Issue Date2010
CitationAnalytical Biochemistry
AbstractThe use of synthetic peptides of both structural and nonstructural proteins of GB virus C (GBV-C) has been studied for the development of new systems to diagnose infection caused by this virus. In an attempt to increase the antigenicity of linear peptide sequences, chimeric multiple antigenic peptides (MAPs) containing epitopes from E2, NS4, and NS5 GBV-C proteins have been synthesized. The synthetic constructs were evaluated by ELISA to establish whether the epitopes in chimeric branched peptides are more efficiently recognized by the specific antibodies compared to the monomeric linear sequences. Moreover, we have investigated the application of a commercial biosensor instrument for the detection of antibodies against the GBV-C in human serum samples. The results of the immunoassays reported in this work highlight the usefulness of synthetic tetrameric branched peptides containing sequences from envelope and nonstructural GBV-C proteins for the diagnosis of GBV-C infection. The potential clinical value of the MAP4(E2-NS5a) for the serodiagnosis of GBV-C infection was demonstrated, thus providing the basis for performing prevalence studies of the infection among the hemodialyzed and hepatitis C virus (HCV)-infected population.
Publisher version (URL)http://dx.doi.org/10.1016/j.ab.2009.09.011
Appears in Collections:(IQAC) Artículos
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