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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Recombinant multi-epitope vaccine induce predefined epitope-specific antibodies against HIV-1.

Monoclonal antibody 2F5 recognizing ELDKWA-epitope on HIV-1 gp41 has significant neutralization potency against 90% of the investigated viruses of African, Asia, American and European strains, but antibodies responses to ELDKWA-epitope in HIV-1 infected individuals were very low. Based on the epitope-vaccine strategy suggested by us, a recombinant glutathione S-transferase ( GST) fusion protein (GST-MELDKWAGELDKWAGELDKWAVDIGPGRAFYGPGRAFYGPGRAFY) as vaccine antigen containing three repeats of neutralizing epitope ELDKWA on gp41 and GPGRAFY on gp120 was designed and expressed in Escherichia coli. After vaccination course, the recombinant multi-epitope vaccine could induce high levels of predefined multi-epitope-specific antibodies in mice. These antibodies in sera could bind to both neutralizing epitopes on gp41 peptide, V3 loop peptide and recombinant soluble gp41 (aa539-684) in ELISA assay (antisera dilution: 1:1,600-25,600), while normal sera did not. Moreover, these antibodies in sera could recognize the CHO-WT cells which expressed HIV-1 envelope glycoprotein on the cell surfaces, indicating that the predefined epitope-specific antibodies could recognize natural envelope protein of HIV-1 though these antibodies were induced by recombinant multi-epitope-vaccine. These experimental results suggested a possible way to develop recombinant multi-epitope vaccine inducing multi-antiviral activities against HIV-1.[1]


  1. Recombinant multi-epitope vaccine induce predefined epitope-specific antibodies against HIV-1. Li, H., Liu, Z.Q., Ding, J., Chen, Y.H. Immunol. Lett. (2002) [Pubmed]
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