Cel-sci Corporation

Viral Technologies, Inc.

Prem S Sarin

Daniel H Zimmerman

Modified HGP-30 heteroconjugates, compositions and methods of use

An antigenic peptide fragment from the p17 gag protein of HIV includes a portion from HGP-30 and a contiguous portion from HGP-35 such that the peptide fragment is capable of inducing a TH1 immune response when administered to a person suffering from AIDS or at risk for AIDS. The peptide has from about 25 to about 37 amino acids, such as, for example, the sequence

Modified HGP-30 peptides, conjugates, compositions and methods of use

HIV-1P-17 peptide fragments, compositions containing and methods for producing and using same

Peptide fragments of the p17 gag protein of HIV-1 from Clade C of from about 30 to about 50 amino acids, including the region extending from position 75 to position 129, raise antibodies recognizing other subtypes, including Clade A, Clade B, Clade E as well as peptides of non-coextensive but overlapping portions of the p17 gag protein. DNA sequences can be used to encode for the peptides of interest. An example of the Clade C peptide of this invention is a peptide having about 30 to about 32 amino acids taken consecutively from a part or the entirety of the following sequence:

HIV-1 p-17 peptide fragments, compositions containing and methods for

A heteroconjugate is formed by linking a T cell binding ligand (TCBL) such as Peptide J of .beta.-2 microglobulin to a modified HGP-30 antigentic peptide fragment of p17 gag peptide, such as. for example

An antigenic peptide fragment from the p17 gag protein of HIV includes a portion from HGP-30 and a contiguous portion from HGP-35 such that the peptide fragment is capable of inducing a TH1 immune response when administered to a person suffering from AIDS or at risk for AIDS. The peptide has from about 25 to about 37 amino acids, such as, for example, the sequence ##EQU1##

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Gaithersburg, MD, United States of America

Prem S Sarin