Provided are vaccine compositions and methods against Streptococcus pneumoniae. The composition comprises liposomes which have polysaccharides from one or more serotypes and have proteins non-covalently attached to the surface and exposed to the exterior.

The invention relates to fusion proteins which comprise at least one antigenic amino acid sequence fused to a carrier heterologous protein sequence, wherein the antigenic sequence comprises an epitopic sequence of a Plasmodium protein and the carrier heterologous protein sequence is a sequence that is immunogenic in humans. The proteins are useful as anti-malaria vaccines.

Outer membrane vesicles from bacteria of the Burkholderia pseudomallei complex can be used as adjuvants in compositions and methods to potentiate the immune response to immunogens.

The present invention provides cell-targeting molecules which can deliver a CD8+ T-cell epitope cargo to the MHC class I presentation pathway of the cell. The cell-targeting molecules of the invention can be used to deliver virtually any CD8+ T-cell epitope from an extracellular space to the MHC class I pathway of a target cell, which may be a malignant cell and/or non-immune cell. The target cell can then display on a cell-surface the delivered CD8+ T-cell epitope complexed with MHC I molecule. The cell-targeting molecules of the invention have uses which include the targeted labeling and/or killing of specific cell-types within a mixture of cell-types, including within a chordate, as well as the stimulation of beneficial immune responses. The cell-targeting molecules of the invention have uses, e.g., in the treatment of a variety of diseases, disorders, and conditions, including cancers, tumors, growth abnormalities, immune disorders, and microbial infections.

Disclosed are methods, systems, components, and compositions for cell-free synthesis of glycosylated carrier proteins. The glycosylated carrier proteins may be utilized in vaccines, including anti-bacterial vaccines. The glycosylated carrier proteins may include a bacterial polysaccharide conjugated to a carrier, which may be utilized to generate an immune response in an immunized host against the polysaccharide conjugated to the carrier. The glycosylated carrier proteins may be synthesized in cell-free glycoprotein synthesis (CFGpS) systems using prokaryote cell lysates that are enriched in components for glycoprotein synthesis such as oligosaccharyltransferases (OSTs) and lipid-linked oligosaccharides (LLOs) including OSTs and LLOs associated with synthesis of bacterial O antigens.

The present invention provides capsular polysaccharides from Streptococcus pneumoniae serotypes identified using NMR. The present invention further provides polysaccharide-protein conjugates in which capsular polysaccharides from one or more of these serotypes are conjugated to a carrier protein such as CRM197. Polysaccharide-protein conjugates from one or more of these serotypes may be included in multivalent pneumococcal conjugate vaccines having polysaccharides from multiple additional Steptococcus pneumoniae serotypes.

The present invention provides a glycoconjugate for administration to a subject in a method comprising the steps of: (i) administering a first dose of glycoconjugate; (ii) subsequently administering a second dose of glycoconjugate; wherein the amount of glycoconjugate in the first dose or first and second doses are atypically low, and also related aspects.

The present invention relates to new conjugated capsular saccharide antigens (glycoconjugates), immunogenic compositions comprising said glycoconjugates and uses thereof.

The present invention relates to new conjugated capsular saccharide antigens (glycoconjugates), immunogenic compositions comprising said glycoconjugates and uses thereof.

Methods of eliciting and/or modulating immune responses, therapeutic methods, and antigen delivery methods that include the step of administering a protein particle derived from a cell, the protein particle comprising a diphtheria toxin Cross Reacting Material (CRM) amino acid sequence are disclosed. Included are diagnostic methods using the protein particle derived from a cell, the protein particle comprising a diphtheria toxin CRM amino acid sequence. The methods disclosed herein may be useful as an antigen carrier delivery system.