摘要:
The instant disclosure relates to pseudovirus nanoparticles (PVNPs) and compositions comprising PVNPs. The disclosed PVNPs may be comprised of fusion proteins that form an icosahedral structure and a nanoparticle shell. The disclosed fusion proteins may comprise a modified norovirus (NoV) S domain protein; a hemagglutinin I (HA1) antigen of the influenza hemagglutinin I (HA1) of influenza vims; and a peptide linker connecting the C-terminus of the NoV S domain to the HA1 antigen. The modified NoV S domain proteins form the interior nanoparticle shell of said PVNP composition and display the 60 HA1 antigens on the surface of the nanoparticle shell. Methods of making and using the PVNPs and compositions containing PVNPs are also disclosed.
摘要:
The disclosure relates to vaccination compositions, for example, against human papillomavirus, Zika virus, and flu virus. The disclosure also relates to vectors for producing the virus-like particles and immune complex platforms of the vaccination compositions.
摘要:
Methods of preparing plant-derived proteins or suprastructure proteins, are provided. The method may comprise obtaining a plant, or plant matter comprising apoplast-localized proteins, or suprastructure proteins, producing a protoplast/spheroplast fraction and apoplast fraction from the plant or plant matter, and recovering the apoplast fraction. The apoplast fraction comprises plant-derived proteins or suprastructure proteins. Alternatively, the proteins, or suprastructure proteins, may be obtained from plant or plant matter comprising plant-derived proteins or suprastructure proteins, by digesting the plant matter using a cell wall degrading enzyme composition to produced a digested fraction. The digested fraction is filtered to produced a filtered fraction, and the plant-derived proteins or suprastructure proteins, are recovered from the filtered fraction.
摘要:
Methods of preparing plant-derived virus like particles (VLPs) are provided. The method may comprise obtaining a plant, or plant matter comprising apoplast-localized VLPs, producing a protoplast/spheroplast fraction and apoplast fraction from the plant or plant matter, and recovering the apoplast fraction. The apoplast fraction comprises plant-derived VLPs. Alternatively, VLPs may be obtained from plant or plant matter comprising plant-derived VLPs by digesting the plant matter using a cell wall degrading enzyme composition to produced a digested fraction. The digested fraction is filtered to produced a filtered fraction, and the plant-derived VLPs are recovered from the filtered fraction.
virus-like particles (VLPs), wherein the VLPs include hemagglutinin (HA) protein and neuraminidase (NA) protein on the surface of the VLPs, a nucleoprotein (NP) ribonucleoprotein complex, and wherein the VLPs do not contain a ribonucleoprotein complex of at least one of PB1, PB2, and NS.
摘要:
Provided herein are chimeric influenza hemagglutinin (HA) polypeptides, compositions comprising the same, vaccines comprising the same, and methods of their use.
摘要:
Described herein is the generation of optimized H1N1 influenza HA polypeptides for eliciting a broadly reactive immune response to H1N1 influenza virus isolates. The optimized HA polypeptides were developed through a series of HA protein alignments, and subsequent generation of consensus sequences, based on selected H1N1 viruses isolated from 1918-2011. Provided herein are optimized H1N1 HA polypeptides, and compositions, fusion proteins and VLPs comprising the HA polypeptides. Further provided are codon-optimized nucleic acid sequences encoding the HA polypeptides. Methods of eliciting an immune response against influenza virus in a subject are also provided by the present disclosure.
摘要:
Methods for production of virus particles with simplified glycosylation on structural or surface proteins are provided. When used as targets for vaccine production, the conserved nature of such sites generates vaccines that are less sensitive to viral mutations. Use of glycosylation inhibitors for production of viruses with simplified glycosylation profiles are disclosed. An exemplary disclosure of influenza viruses and methods for production of mono-glycosylated influenza virus particles is provided. Methods for production of mono-glycosylated forms of influenza A virus, NIBRG-14 (H5N1) are provided.
摘要:
The invention provides virus-like particles for treatment of viral infections based on the virus causing the infection. The virus-like particles comprise the virus recombinant proteins that form a capsid, recombinant virus membrane proteins attached to the capsid and vRNA packaged within said capsid. The vRNA is generated from a DNA sequence encoding a polypeptide capable of specifically binding to a constant region of a nonstructural protein of the virus that is essential for propagation of the virus.
摘要:
The invention describes novel virus-like particles for use as vaccines, diagnostic tools and R&D tools based on recombinant DNA and cell cultivation techniques for production. The recombinant virus-like particles of the invention are assembled by polypeptide chains that incorporate several, in particular two or more, different epitopes which are selected either (a) from different viral strains of the same virus and/or (b) from different serotypes of the same virus and/or (c) from different viral strains specific for different hosts. These epitopes are then displayed on the particle surface.