Analysis of epitopic residues introduced into the hybrid peptide vaccines prepared according to the cassette theory

Vaccine
H NaruseK Onoé

Abstract

In our previous study, we prepared a synthetic peptide vaccine (46F/HA127-133/54A) against influenza strain A/Aichi/2/68 (H3N2) virus by introducing haemagglutinin (HA) 127-133 to an I-Ab,b binding component that consisted of residues 43-46 and 54-58 of an I-Ab,d binding peptide, 46F50V54A. This hybrid peptide vaccine induced considerable immunological responses against A/Aichi/2/68 as well as against the peptide vaccine in I-Ab mice. In the present study, we have attempted to increase the immunogenicity of the peptide vaccine by introducing HA peptides of various lengths into the I-Ab,d binding components consisting of residues 43-46 and 54-58 or 43-47 and 53-58 of 46F50V54A. We demonstrate here that, among the peptide vaccines prepared, 46F/HA127-133/54A (18 mer) consisting of HA127-133 and the I-Ab,d binding component constructed from 43-47 and 53-58 of 46F50V54A induces the most vigorous T-cell responses and neutralizing antibodies against A/Aichi/2/68 in both I-Ab and I-Ad mice.

References

Oct 1, 1992·Proceedings of the National Academy of Sciences of the United States of America·K OgasawaraK Onoé
Jan 4, 1987·Nature·K OgasawaraR H Schwartz
Jun 1, 1989·Proceedings of the National Academy of Sciences of the United States of America·E B SchaefferS Buus
Aug 4, 1988·Nature·M M Davis, P J Bjorkman

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