Methods and compositions for inducing an immune response using conserved element constructs
AssigneesThe United States of America, as represented by the Secretary, Department of, University of Washington
InventorsBarbara K. Felber, George N. Pavlakis, James I. Mullins, Antonio Valentin, Siriphan Manocheewa
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Abstract
The invention provides methods and compositions for eliciting broad immune responses to HIV envelope proteins. The methods include use of nucleic acids constructs that encode conserved elements of HIV Env to induce immune responses.
Claims47
A method of inducing an immune response to HIV Gag in a subject;
- the method comprising:
- priming an immune response to HIV Gag, wherein priming comprises administering to the subject a CE-encoding expression vector that comprises a nucleic acid sequence encoding p24GagCE1 as set forth in Table 2 fused at the N-terminus to a human GM-CSF signal peptide and a nucleic acid sequence encoding p24GagCE2 as set forth in Table 2 fused at the N-terminus to a human GM-CSF signal peptide;
- wherein the subject is not co-administered or has not previously been administered a recombinant nucleic acid construct encoding a full-length or substantially full-length HIV Gag polypeptide;
- and
- boosting an immune response to HIV Gag,
- wherein boosting comprises co-delivering the CE-encoding expression vector with an expression vector that encodes full-length HIV-1 p55gag or substantially full-length HIV-1 p55gag.
A nucleic acid encoding an immunogenic HIV Env conserved element polypeptide, wherein the HIV Env conserved element polypeptide comprises at least five conserved elements selected from SEQ ID NO:1, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, and 22;
- and the conserved elements are separated by linkers of 1 to 5 amino acids in length.
A nucleic acid encoding an immunogenic HIV Env conserved element polypeptide, wherein the HIV Env conserved element polypeptide comprises at least five conserved elements selected from SEQ ID NO:1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, and 23;
- and the conserved elements are separated by linkers of 1 to 5 amino acids in length.
An immunogenic HIV Env conserved element polypeptide comprising at least five conserved elements selected from SEQ ID NO:1, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, and 22, wherein the conserved elements are separated by linkers of 1 to 5 amino acids in length
A method of inducing an immune response to HIV Env, the method comprising administering:
- a first nucleic acid encoding a first immunogenic HIV Env conserved element polypeptide that comprises at least five conserved elements selected from SEQ ID NO:1, 2, 4, 6;
- 8, 10, 12, 14;
- 16, 18, 20, and 22,
- wherein the conserved elements are separated by linkers of 1 to 5 amino acids in length;
- and
- a second nucleic acid encoding a second immunogenic HIV Env conserved element polypeptide comprises at least five conserved elements selected from SEQ ID NO:
- 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, and 23,
- wherein the conserved elements are separated by linkers of 1 to 5 amino acids in length.
A method of inducing an immune response to HIV Env, the method comprising administering:
- a first immunogenic HIV Env conserved element polypeptide that comprises at least five conserved elements selected from SEQ ID NO:1, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20;
- and 22,
- wherein the conserved elements are separated by linkers of 1 to 5 amino acids in length;
- and
- a second immunogenic HIV Env conserved element polypeptide comprises at least five conserved elements selected from SEQ ID NO:
- 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, and 23,
- wherein the conserved elements are separated by linkers of 1 to 5 amino acids in length.
An HIV Gag CE polypeptide comprising:
- (a) SEQ ID NO:27, 29, 31, 33, 35, and/or 37;
- or
- (b) SEQ ID NO:28, 30, 32, 34, 36, and/or 38.
An HIV Gag CE polypeptide, comprising:
- P24CE8-1, p24CE9-1, p24CE3-1, p24CE10-1, p24CE5-1, p24CEI 1-1, p24CE6-1, p24CE12-1, p24CE13-1 as shown in FIG. 23;
- or
- P24CE8-1, p24CE9-2, p24CE3-2, p24CE10-21, p24CE5-2, p24CE1 1-2, p24CE6-2, p24CE1 2-2, p24CE13-2 as shown in FIG. 23.
The method of claim 21, further comprising administering an immunogenic composition to induce an immune response to HIV Gag, wherein the immunogenic composition is an HIV Gag CE polypeptide comprising p24 CE1, CE2, CE3, CE4, CE5, CE6, and CE7 as shown in FIG. 23:
- or an HIV Gag CE polypeptide of claim 82 or 83.
Dependencies are inferred from the claim text.