The present invention relates to an immunogen-carrier, wherein the immunogen-carrier is preferably a virus-like particle (VLP) composed of a plurality of a modified PCV2 ORF2 protein. In particular, the present invention belongs to the field of compliance markers and marker vaccines which allow for the differentiation between infected and vaccinated individuals. In particular, it relates to a compliance marker for vaccines including a subunit antigen, and a DIVA (Differentiating Infected from Vaccinated Animals) system which makes it possible to differentiate between animals infected with a pathogen and animals treated with a subunit antigen derived from said pathogen.

Described herein is a fusion protein comprising a bacteriophage protein fused to a cancer antigen. Vaccines are also described, as well as methods of treatment and/or prevention of cancer and methods of immunizing an individual.

The present invention belongs to the field of biotechnology and pharmaceuticals. The present inventors found a sequence motif for identifying potent RIG-I agonists. Accordingly, the present invention is directed to a method for producing RIG-I agonists, the RIG-I agonists produced by said methods, and uses of said RIG-I agonists, as defined in the claims.

The present invention relates to virus-like particles of plant virus Cucumber Mosaic Virus (CMV), and in particular to modified VLPs of CMV comprising Th cell epitopes, in particular universal Th cell epitopes. Furthermore, these modified VLPs serve as, preferably, vaccine platform, for generating immune responses, in particular antibody responses, against antigens linked to said modified VLPs. The presence of the Th cell epitopes, in particular universal Th cell epitopes, led to a further increase in the generated immune response.

Methods are described for predicting ancestral sequences for viruses or portions thereof. Also described are predicted ancestral sequences for adeno-associated virus (AAV) capsid polypeptides. The disclosure also provides methods of gene transfer and methods of vaccinating subjects by administering a target antigen operably linked to the AAV capsid polypeptides.

The present invention relates to tumor immunotherapy, in particular to tumor vaccination, using chimeric proteins comprising all or a portion of a hepatitis B virus core antigen protein and an amino acid sequence comprising an epitope derived from the extracellular portion of a tumor-associated antigen. In particular, the present invention provides virus-like particles comprising said chimeric proteins, which are useful for eliciting a humoral immune response in a subject against the tumor-associated antigen, in particular against cells carrying said tumor-associated antigen on their surface, wherein the tumor-associated antigen is a self-protein in said subject.

The invention relates to a virus-like particle (VLP) based vaccine. The virus-like particle constitutes a non-naturally occurring, ordered and repetitive antigen array display scaffold which can obtain a strong and long-lasting immune response in a subject. The VLP-based vaccine may be used for the prophylaxis and/or treatment of a disease including, but is not limited to, cancer, cardiovascular, infectious, chronic, neurological diseases/disorders, asthma, and/or immune-inflammatory diseases/disorders.

The present invention Provides composition and method for stimulating immune responses against antigens without using conventional adjuvants (such as aluminum salt adjuvants, oil-in-water emulsion adjuvants, toll-like receptor agonist adjuvants, and the like). The composition contains p14.7 protein and an antigen to which the stimulated illumine responses are desired. The p14.7 protein functions as an adjuvant so that the immune responses to the antigen stimulated by the composition comprising p14.7 protein and the antigen are greater than the immune responses stimulated by the antigen alone. The current invention also provides a method for producing thermostable vaccines and a simple strategy for avoiding vaccine cold-chain maintenance by lyophilization.

Novel, nanoparticle-based vaccines are provided that elicit an immune response to a broad range of infectious agents, such as influenza viruses. The nanoparticles comprise a heterogeneous population of fusion proteins, each comprising a monomeric subunit of a self-assembly protein, such as ferritin, joined to one or more immunogenic portions of a protein from an infectious agent, such as influenza virus. The fusion proteins self-assemble to form nanoparticles that display a heterogeneous population of immunogenic portions on their surface. When administered to an individual, such nanoparticles elicit an immune response to different strains, types, subtypes and species with in the same taxonomic family. Thus, such nanoparticles can be used to vaccinate an individual against infection by different Types, subtypes and/or strains of infectious agents. Also provided are specific fusion proteins, nucleic acid molecules encoding such fusion proteins and methods of using nanoparticles of the invention to vaccinate individuals.

The present invention provides a new component that is useful as a SARS-CoV-2 vaccine antigen that uses as a target a receptor binding domain of SARS-CoV-2. The present invention contains the fusion protein, which includes hemagglutinin and a receptor binding domain of SARS-CoV-2, and a vaccine containing the fusion protein.