Disclosed are methods of a method of making a nanostructure, comprising adding a component A (compA) protein to a solution comprising a component B (compB) protein under conditions that minimize shear stress, thereby forming a compA:compB complex. Further disclosed are methods of making a nanostructure, comprising (i) providing a first inlet fluid stream comprising a first protein and a second inlet fluid stream comprising a second protein, and (ii) contacting the first inlet fluid stream and the second inlet fluid stream to form an outlet stream, wherein mixing of the first protein and the second protein occurs in the outlet stream, thereby forming a protein complex comprises the first protein and the second protein. A microfluidic mixer may be used. The methods may further comprise purifying the compA:compB complex from excess compA, excess compB, and/or other impurities by filtering the solution with a 1,000 kDa membrane or an equivalent thereof.

The present invention provides a mutant RSV F protein having a mutation, wherein the mutation is a substitution of a leucine corresponding to a leucine at position 141 of an amino acid sequence of SEQ ID NO: 1 or a leucine corresponding to a leucine at position 142 with a cysteine, and a substitution of a leucine corresponding to a leucine at position 373 with a cysteine, and a disulfide bond is formed between the cysteines. Further provided is a mutant RSV F protein having a mutation, wherein the mutation is a substitution of a glutamic acid corresponding to a glutamic acid at position 60 of the amino acid sequence of SEQ ID NO: 1 with a non-acidic amino acid.

An RSV virus-like particle which includes a chimeric protein that includes a core consisting of an influenza M1 protein, an RSV-derived preF protein, an RSV-derived G protein or part of G protein displayed on the surface of the core, can exhibit excellent effects in terms of inhibiting RSV virus infection and inhibiting the inflammatory response of the lungs.

The present invention relates to a lipopeptide building block consisting of (i) a peptide moiety comprising a coiled coil peptide chain segment, wherein said coiled coil peptide chain segment comprises 3 to 8 repeat units, and wherein said repeat unit consists of the sequence IEKKIE-XO (SEQ ID NO:58), wherein X0 represents an amino acid, and wherein preferably said repeat unit consists of the sequence selected from IEKKIEG (SEQ ID NO:59), IEKKIEA (SEQ ID NO:12) or IEKKIES (SEQ ID NO:13), and wherein further preferably said repeat unit consists of the sequence IEKKIES (SEQ ID NO:13); (ii) a lipid moiety comprising, preferably consisting of, the formula LM-I wherein R.sup.1 and R.sup.2 are independently C.sub.11-15alkyl, wherein preferably R.sup.1 and R.sup.2 are independently —C.sub.11H.sub.23, —C.sub.13H.sub.27 or —C.sub.15H.sub.31, and wherein further preferably R.sup.1 and R.sup.2 are —C.sub.15H.sub.31; and wherein R.sup.3 is hydrogen or —C(O)C.sub.11-15alkyl, and wherein preferably R.sup.3 is H or —C(O)C.sub.15H.sub.31; and wherein said lipid moiety is linked to said peptide moiety, wherein the wavy line in formula LM-I indicates the linkage site to said peptide moiety, and wherein preferably said lipid moiety is linked to the N-terminus of said peptide moiety, as well as conjugates comprising said lipopeptide building blocks to which antigens are coupled, bundles of such conjugates, synthetic virus-like particles (SVLPs) comprising at least one bundle of conjugates and pharmaceutical compositions comprising the same. The present invention further relates to said conjugates, bundles of conjugates, said SVLPs and said pharmaceutical compositions for use as a medicament, as vaccines and for use in methods of preventing or treating a disease, preferably selected from infectious diseases, allergies and cancer, and generally to efficiently induce antigen specific immune responses.

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This disclosure relates to immunogenic compositions and methods of enhancing an immune response to an antigen. In certain embodiments, the disclosure relates to virus-like carries comprising a TLR5 agonist on the exterior without an antigen.

The present disclosure relates to virus-like particles and vaccine compositions for inducing immunity and preventing respiratory syncytial virus (RSV) infection. Specifically, the disclosure provides virus like-particles (VLPs) for use in inducing immunity to respiratory syncyhial virus (RSV) infections or symptoms thereof, wherein the VLP comprising a respiratory RSV matrix protein (M) and an RSV M2-1 protein, a glycoprotein (G), a fusion protein (F), and/or a phosphoprotein (P).

Respiratory syncytial virus (RSV)-based virus-like particles are disclosed. Also disclosed are polynucleotides encoding the virus-like particles (VLPs) as well as immunogenic compositions, pharmaceutical compositions, vaccines, and kits containing the virus-like particles. In addition, methods of producing and using each of the above compositions are also disclosed. Methods of use include single or combination administration of the RSV-VLPs, as well as use of the RSV-VLPs alone or in combination with other types of vaccines.

Described herein are virus-like particles (VLPs) that display on their surfaces antigenic paramyxovirus (e.g., RSV and/or MPV) proteins. Also described are methods of making and using these VLPs.

This disclosure relates to a chimeric respiratory syncytial vims encoding a chimeric RSV and hMPV F protein and uses of the chimeric virus or components therein in a vaccine. In certain embodiments, this disclosure relates to a live attenuated vaccine comprising an RSV backbone substituting the F proteins of RSV, for a chimeric RSV and hMPV F protein.

Embodiments of a recombinant Respiratory Syncytial Virus (RSV) F ectodomain trimer stabilized in a prefusion conformation are provided. Also disclosed are nucleic acids encoding the RSV F ectodomain trimer and methods of producing the RSV F ectodomain trimer. Methods for inducing an immune response in a subject are also disclosed. In some embodiments, the method can be a method for treating or preventing a RSV infection in a subject by administering a therapeutically effective amount of the recombinant RSV F ectodomain trimer to the subject.