Abstract: The invention provides for the synthesis of more effective generators of a T-cell immune response by providing peptide derivatives that are MHC class I-restricted antigens. The peptide derivatives of the present invention are prepared or derived from a parent peptide of 8 to 11 amino acid residues in length, wherein the peptide derivative contains a non-natural amino acid substituted in place of a naturally-occurring amino acid residue at one or more primary anchor positions in the parent peptide or at position 6, position 7, or the C-terminus.

Abstract: The invention provides for the synthesis of more effective generators of a T-cell immune response by providing peptide derivatives that are MHC class I-restricted antigens. The peptide derivatives of the present invention are prepared or derived from a parent peptide of 8 to 11 amino acid residues in length, wherein the peptide derivative contains a non-natural amino acid substituted in place of a naturally-occurring amino acid residue at one or more primary anchor positions in the parent peptide or at position 6, position 7, or the C-terminus.

Abstract: The invention provides for the synthesis of more effective generators of a T-cell immune response by providing peptide derivatives that are MHC class I-restricted antigens. The peptide derivatives of the present invention are prepared or derived from a parent peptide of 8 to 11 amino acid residues in length, wherein the peptide derivative contains a non-natural amino acid substituted in place of a naturally-occurring amino acid residue at one or more primary anchor positions in the parent peptide or at position 6, position 7, or the C-terminus.

Abstract: Methods of making a protein that stimulates a protective immune response in a subject include separating a portion of a protein from a naturally occurring influenza viral hemagglutinin to form a protein portion.

Abstract: Compositions that include at least a portion of a flagellin and an antigen can be employed in methods that stimulate an immune response in a subject, in particular, a protective immune response in a subject. Compositions can be associated with particles and employed in the methods in relatively low doses to provide protective immunity to infection.

Abstract: The invention provides for the synthesis of more effective generators of a T-cell immune response by providing peptide derivatives that are MHC class I-restricted antigens. The peptide derivatives of the present invention are prepared or derived from a parent peptide of 8 to 11 amino acid residues in length, wherein the peptide derivative contains a non-natural amino acid substituted in place of a naturally-occurring amino acid residue at one or more primary anchor positions in the parent peptide or at position 6, position 7, or the C-terminus.

Abstract: Compositions that include at least a portion of a flagellin and an antigen can be employed in methods that stimulate an immune response in a subject, in particular, a protective immune response in a subject. Compositions can be associated with particles and employed in the methods in relatively low doses to provide protective immunity to infection.

Abstract: Compositions that include Toll-like Receptor 5 agonists and at least a portion of at least one viral antigen can be employed in methods that stimulate an immune response in a subject, in particular, a protective immune response in a subject. Compositions can be associated with particles and employed in the methods in relatively low doses to provide protective immunity to viral infection.

Abstract: Methods of making a protein that stimulates a protective immune response in a subject include separating a portion of a protein from a naturally occurring influenza viral hemagglutinin to form a protein portion.

Abstract: Methods of making a protein that stimulates a protective immune response in a subject include separating a portion of a protein from a naturally occurring influenza viral hemagglutinin to form a protein portion. The protein portion includes at least a portion of a globular head, and at least a portion of at least one secondary structure having at least one ?-sheet at a bottom of the globular head that causes the globular head to essentially retain its tertiary structure. The protein portion made by the methods of the invention lacks a transmembrane domain, a cytoplasmic domain and an HA2 subunit. A nucleic acid sequence encoding the protein portion is transformed into a prokaryotic host cell.

Abstract: The invention provides for the synthesis of more effective generators of a T-cell immune response by providing peptide derivatives that are MHC class I-restricted antigens. The peptide derivatives of the present invention are prepared or derived from a parent peptide of 8 to 11 amino acid residues in length, wherein the peptide derivative contains a non-natural amino acid substituted in place of a naturally-occurring amino acid residue at one or more primary anchor positions in the parent peptide or at position 6, position 7, or the C-terminus. The exemplary polypeptides are derived from the survivin, hTERT, CYP1B1 and MART-1 antigens.

Abstract: Methods of making a protein that stimulates a protective immune response in a subject include separating a portion of a protein from a naturally occurring influenza viral hemagglutinin to form a protein portion. The protein portion includes at least a portion of a globular head, and at least a portion of at least one secondary structure having at least one ?-sheet at a bottom of the globular head that causes the globular head to essentially retain its tertiary structure. The protein portion made by the methods of the invention lacks a transmembrane domain, a cytoplasmic domain and an HA2 subunit. A nucleic acid sequence encoding the protein portion is transformed into a prokaryotic host cell.

Abstract: Methods of making a protein that stimulates a protective immune response in a subject include separating a portion of a protein from a naturally occurring influenza viral hemagglutinin to form a protein portion.

Abstract: Compositions that include Toll-like Receptor 5 agonists and at least a portion of at least one viral antigen can be employed in methods that stimulate an immune response in a subject, in particular, a protective immune response in a subject. Compositions can be associated with particles and employed in the methods in relatively low doses to provide protective immunity to viral infection.

Abstract: Compositions that include at least a portion of a flagellin and an antigen can be employed in methods that stimulate an immune response in a subject, in particular, a protective immune response in a subject. Compositions can be associated with particles and employed in the methods in relatively low doses to provide protective immunity to infection.

Abstract: Methods that stimulate a protective immune response in a subject include a portion of a protein from a naturally occurring viral hemagglutinin, wherein the protein portion includes at least a portion of a globular head and at least a portion of at least one secondary structure that causes the globular head to essentially retain its tertiary structure, and wherein the protein portion lacks a transmembrane domain, a cytoplasmic domain and an HA2 subunit. Compositions administered to the subject can further include a carrier and can be administered in single or multiple doses.

Abstract: Compositions that include Toll-like Receptor 5 agonists and at least a portion of at least one viral antigen can be employed in methods that stimulate an immune response in a subject, in particular, a protective immune response in a subject. Compositions can be associated with particles and employed in the methods in relatively low doses to provide protective immunity to viral infection.

Abstract: The invention provides for the synthesis of more effective generators of a T-cell immune response by providing peptide derivatives that are MHC class I-restricted antigens. The peptide derivatives of the present invention are prepared or derived from a parent peptide of 8 to 11 amino acid residues in length, wherein the peptide derivative contains a non-natural amino acid substituted in place of a naturally-occurring amino acid residue at one or more primary anchor positions in the parent peptide or at position 6, position 7, or the C-terminus. The exemplary polypeptides are derived from the survivin, hTERT, CYP1B1 and MART-1 antigens.

Abstract: Methods of making and compositions that stimulate a protective immune response in a subject include a portion of a protein from a naturally occurring viral hemagglutinin, wherein the protein portion includes at least a portion of a globular head and at least a portion of at least one secondary structure that causes the globular head to essentially retain its tertiary structure, and wherein the protein portion lacks a membrane fusion domain, a transmembrane domain and a cytoplasmic domain. Compositions can further include a Toll-like Receptor agonist and a carrier protein.

Abstract: Compositions that include Toll-like Receptor 5 agonists and at least a portion of at least one viral antigen can be employed in methods that stimulate an immune response in a subject, in particular, a protective immune response in a subject. Compositions can be associated with particles and employed in the methods in relatively low doses to provide protective immunity to viral infection.