Abstract: An immunogenic composition, a SARS-CoV-2 vaccine and a vector are introduced. The immunogenic composition has a recombinant protein having a sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, and any polypeptide encoded by a polynucleotide which is at least 80% homologous with SEQ ID NO: 1-4, wherein the recombinant protein contains an IgG1 Fc protein fragment having a length of at least 6 amino acids; or a nucleic acid molecule encoding the recombinant protein. The SARS-CoV-2 vaccine has the above recombinant protein or the nucleic acid molecule encoding the above recombinant protein. The vector has the nucleic acid molecule encoding the above recombinant protein.

Abstract: Provided is a pharmaceutical composition, including an antigen fusion protein which includes an antigen and an antagonist of an Fc gamma receptor. Also provided is a method of enhancing immunogenicity of an antigen, including conjugating the antigen with an antagonist of an Fc gamma receptor to form an antigen fusion protein. Also provided is a method of enhancing an immune response to an antigen in a subject, including administering to the subject an effective amount of an antigen fusion protein which includes an antigen and an antagonist of an Fc gamma receptor. The present invention may be applied in the development of potent vaccines based on targeting vaccine antigens to antigen-presenting cells via binding to Fc gamma receptors.

Abstract: An immunogenic composition, a SARS-CoV-2 vaccine and a vector are introduced. The immunogenic composition has a recombinant protein having a sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, and any polypeptide encoded by a polynucleotide which is at least 80% homologous with SEQ ID NO: 1-4, wherein the recombinant protein contains an IgG1 Fc protein fragment having a length of at least 6 amino acids; or a nucleic acid molecule encoding the recombinant protein. The SARS-CoV-2 vaccine has the above recombinant protein or the nucleic acid molecule encoding the above recombinant protein. The vector has the nucleic acid molecule encoding the above recombinant protein.

Abstract: Described herein are an immunogenic peptide containing the sequence of CLDSLGQWN (SEQ ID NO:2) and a method of using the peptide for treating cancer.

Abstract: The present invention relates to treatment of diabetes, toll-like receptor 4 (TLR-4) modulators and methods for using the same. Particularly, the present invention provides an isolated peptide from pneumolysin (PLY peptide) which is effective in treatment of diabetes. In addition, the PLY peptide of the present invention is a TLR-4 antagonist and thus can be used in the treatment of a disease or condition associated with TLR-4 activation. The present invention also provides treatment of diabetes with a TLR-4 antagonist.

Abstract: Provided is a pharmaceutical composition, including an antigen fusion protein which includes an antigen and an antagonist of an Fc gamma receptor. Also provided is a method of enhancing immunogenicity of an antigen, including conjugating the antigen with an antagonist of an Fc gamma receptor to form an antigen fusion protein. Also provided is a method of enhancing an immune response to an antigen in a subject, including administering to the subject an effective amount of an antigen fusion protein which includes an antigen and an antagonist of an Fc gamma receptor. The present invention may be applied in the development of potent vaccines based on targeting vaccine antigens to antigen-presenting cells via binding to Fc gamma receptors.

Abstract: There are provided compositions and methods for prevention or treatment of Streptococcus pneumoniae (SP)-associated diseases. More specifically, there are provided recombinant lipidated fusion proteins comprising pneumococcal surface antigen A (PsaA), the recombinant lipidated fusion proteins comprising, from N-terminus to C-terminus, the N-terminal native lipid signal peptide of PsaA and the C-terminal structural gene for PsaA. Methods of inducing broad spectrum mucosal immunity against SP comprising administering a vaccine comprising recombinant lipidated fusion proteins are also described.

Abstract: The present invention relates to treatment of diabetes, toll-like receptor 4 (TLR-4) modulators and methods for using the same. Particularly, the present invention provides an isolated peptide from pneumolysin (PLY peptide) which is effective in treatment of diabetes. In addition, the PLY peptide of the present invention is a TLR-4 antagonist and thus can be used in the treatment of a disease or condition associated with TLR-4 activation. The present invention also provides treatment of diabetes with a TLR-4 antagonist.

Abstract: Described herein are an immunogenic peptide containing the sequence of CLDSLGQWN (SEQ ID NO:2) and a method of using the peptide for treating cancer.

Abstract: A composition in a water-in-oil-in-water (W/O/W) emulsion is disclosed. The composition comprises: (a) a continuous aqueous phase, comprising H2O; (b) an oil phase or an oil shell, dispersed in the continuous aqueous phase; and (c) a hydrophilic polymer, stabilizing an interface between the continuous aqueous phase and the oil phase or the oil shell to form the water-in-oil-in-water (W/O/W) emulsion. The oil phase or the oil shell comprises: (i) oil; (ii) an internal aqueous phase, dispersed within the oil or the oil shell; and (iii) a lipophilic sorbitan-polyester conjugate, stabilizing an interface between the oil and the inner aqueous phase to form a water-in-oil (W/O) emulsion. The lipophilic sorbitan-polyester conjugate comprises: (1) sorbitan; and (2) poly(lactide-co-?-caprolactone) or polylactic acid (polylactide), conjugated to the sorbitan.

Abstract: There are provided compositions and methods for prevention or treatment of Streptococcus pneumoniae (SP)-associated diseases. More specifically, there are provided recombinant lipidated fusion proteins comprising pneumococcal surface antigen A (PsaA), the recombinant lipidated fusion proteins comprising, from N-terminus to C-terminus, the N-terminal native lipid signal peptide of PsaA and the C-terminal structural gene for PsaA. Methods of inducing broad spectrum mucosal immunity against SP comprising administering a vaccine comprising recombinant lipidated fusion proteins are also described.

Abstract: A composition in a water-in-oil-in-water (W/O/W) emulsion is disclosed. The composition comprises: (a) a continuous aqueous phase, comprising H2O; (b) an oil phase or an oil shell, dispersed in the continuous aqueous phase; and (c) a hydrophilic polymer, stabilizing an interface between the continuous aqueous phase and the oil phase or the oil shell to form the water-in-oil-in-water (W/O/W) emulsion. The oil phase or the oil shell comprises: (i) oil; (ii) an internal aqueous phase, dispersed within the oil or the oil shell; and (iii) a lipophilic sorbitan-polyester conjugate, stabilizing an interface between the oil and the inner aqueous phase to form a water-in-oil (W/O) emulsion. The lipophilic sorbitan-polyester conjugate comprises: (1) sorbitan; and (2) poly(lactide-co-?-caprolactone) or polylactic acid (polylactide), conjugated to the sorbitan.

Abstract: There are provided compositions and methods for prevention or treatment of Streptococcus pneumoniae (SP)-associated diseases. More specifically, there are provided recombinant lipidated fusion proteins comprising pneumococcal surface antigen A (PsaA), the recombinant lipidated fusion proteins comprising, from N-terminus to C-terminus, the N-terminal native lipid signal peptide of PsaA and the C-terminal structural gene for PsaA. Methods of inducing broad spectrum mucosal immunity against SP comprising administering a vaccine comprising recombinant lipidated fusion proteins are also described.

Abstract: The present invention relates to treatment of diabetes, toll-like receptor 4 (TLR-4) modulators and methods for using the same. Particularly, the present invention provides an isolated peptide from pneumolysin (PLY peptide) which is effective in treatment of diabetes. In addition, the PLY peptide of the present invention is a TLR-4 antagonist and thus can be used in the treatment of a disease or condition associated with TLR-4 activation. The present invention also provides treatment of diabetes with a TLR-4 antagonist.

Abstract: Described herein are isolated polypeptides each containing one or more receptor-binding sites of toxin A (tcdA) of Clostridium difficile (Cd), nucleic acids encoding the polypeptides, and methods of using the polypeptides and nucleic acids.

Abstract: Described herein are isolated polypeptides each containing one or more receptor-binding sites of toxin A (tcdA) of Clostridium difficile (Cd), nucleic acids encoding the polypeptides, and methods of using the polypeptides and nucleic acids.

Abstract: A method of producing a recombinant lipidated polypeptide in E. coli. The method includes providing an E. coli host cell adapted to express a recombinant lipidated polypeptide; and culturing the E. coli host cell in a minimal medium under conditions that allow expression of the polypeptide in lipidated form.

Abstract: A method for preparing and purifying recombinant lipoprotein Ag473 of Neisseria meningitidis (NM) group B isolates. The method can be used in large-scale production of vaccines for Neisseria meningitidis (NM) group B.

Abstract: This invention relates to, inter alia, an isolated lipidated polypeptide including a lipid moiety at the N-terminus and a plurality of epitopes, and methods of making and using the polypeptide.

Abstract: Disclosed are polypeptides and fusion proteins. Also disclosed are related immunotherapeutic compositions and methods.