The present invention relates to vaccine compositions based on Gram-negative outer membrane vesicles displaying antigens of pathogens expressed as part of a fusion protein comprising N-terminal parts of surface expressed lipoproteins of Gram-negative bacteria, and use of such compositions in vaccination. The invention further relates to the fusion lipoproteins comprising N-terminal parts of surface expressed lipoproteins of Gram-negative bacteria and antigens of pathogens fused thereto, DNA constructs and bacterial host cells for expressing these fusion lipoproteins and to methods for producing outer membrane vesicles displaying the fusion lipoproteins.

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 relates to novel hybrid peptides developed from the combination of membrane surface protein peptide fragments present in anaplasmosis microorganisms, and in particular, bacteria of the species Anaplasma marginale. The present invention further relates to hybrid peptide sets, compositions and kits comprising such novel hybrid peptides, their uses and methods of inducing immune response. Each hybrid peptide, according to the present invention, comprises two or more peptide fragments of amino acid sequences as defined in the present invention linked together by means of a spacer element. The combined peptide fragments are protein peptide fragments of MSP1, MSP1a, MSP1b, MSP2, MSP2-HRV, MSP3, OMP7, OMP8, VirB9 and VirB10.

The present invention relates to a probiotic cell transformed with a construct suitable to overexpress and display on the surface of the probiotic cell a fusion protein comprising at least a portion of a transport protein coupled to at least a portion of one or more antigenic proteins or peptides. Probiotic-derived vesicles displaying this fusion protein as well as methods of inducing an immune response using the probiotic cells or vesicles are also disclosed.

The invention relates to composite antigens comprising a peptide with contiguous amino acid sequence derived from a plurality of antigenic epitopes of one or more pathogens that induces an immune response in a mammal that is protective against infection by the one or more pathogens. In addition, the invention relates to vaccines comprising composite antigens and to method for treating and preventing an infection.

The invention provides eTEC linked glycoconjugates comprising a saccharide covalently conjugated to a carrier protein through a (2-((2-oxoethyl)thio)ethyl)carbamate (eTEC) spacer, immunogenic compositions comprising such glycoconjugates, and methods for the preparation and use of such glycoconjugates and immunogenic compositions.

The invention provides a bioactive peptide including a partial amino acid sequence of Plasmodium falciparum enolase, and having a molecular structure compatible with a specification setting for a GMP-compliant production process. The peptide has a structure in which two peptides, each having an amino acid sequence of A01-Ala-Ser-Glu-Phe-Tyr-Asn-Ser-Glu-Asn-Lys-Thr-Tyr-Asp-Leu-Asp-Phe-Lys-Thr-Pro-Asn-Asn-Asp-A02 (SEQ ID NO: 1) or A03-Ala-Ser-Glu-Phe-Tyr-Asn-Ser-Glu-Asn-Lys-Thr-Tyr-Asp-Leu-Asp-Phe-Lys-Thr-Pro-Asn-Asn-Asp-Lys-Ser-Leu-Val-Lys-Thr-A04 (SEQ ID NO: 2) are linked by amide bonds between the respective carboxy termini of the two peptides and two amino groups of Lys in a linker peptide represented by Lys-A05-Cys-A06 and arranged in the form of a two-forked branch, wherein each of A01 to A06 represents an amino acid residue in a number of an arbitrary number including 0. The peptide preferably has a dimerized structure in which two of the above described peptides are linked by an SS bond between the Cys residues in the linker peptide sequences included in the respective two peptides.

The invention provides peptide vaccines comprising the signal peptide domain of selected target antigens of intracellular pathogens. The peptide vaccines of the invention contain multiple class II and class I-restricted epitopes and are recognized and presented by the majority of the vaccinated human population. The invention provides in particular anti tuberculosis vaccines. The invention further provides compositions comprising the vaccines as well as their use to treat or prevent infection.

The disclosure relates to a glycoconjugate vaccine conferring protection against Francisella tularensis infections and a method to manufacture a glycoconjugate antigen.

The present invention relates to a microparticle. The microparticle includes one or more recombinant outer membrane vesicles, at least some of which display a fusion protein, where the fusion protein comprises at least a portion of a transport protein coupled to at least a portion of one or more antigenic proteins or peptides, and a polymeric coating over the one or more recombinant outer membrane vesicles. The present invention further relates to a method of eliciting an immune response in a mammal and a method of making encapsulated outer membrane vesicles displaying a fusion protein.