University of Kansas

Joseph S Murray

Teruna J Siahaan

Yongbo Hu

A novel peptide sequence having the general formula AB wherein each of A and B represent a chain of amino acid residues and wherein said A chain is capable of binding with a major histocompatibility complex on an antigen presenting cell, and wherein said B chain is capable of binding with a Signal-2 receptor on an antigen presenting cell. Preferred forms of the peptide sequence further include an X chain positioned intermediate the A chain and the B chain. Moreover, preferred forms include an A chain which has at least about 10% sequence homology with a Signal-1 moiety, or is a peptidomimetic of a Signal-1 moiety, said B chain has at least 10% sequence homology with a Signal-2 receptor moiety, or is a peptidomimetic of a Signal-2 receptor moiety, and wherein the X chain has at least one amino acid residue, or is a peptidomimetic of that amino acid residue. Advantageously, the novel peptide sequence is capable of shifting a type-1 immune response to a type-2 immune response or from a type-2 immune response to a type-1 immune response.

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Topeka, KS, United States of America

Joseph S Murray