摘要:
Microparticles with absorbed polypeptide-containing molecules formed without the use of surfactant, methods of making such microparticle compositions, and uses thereof, are disclosed. The microparticles comprise a polymer, such as a poly(α-hydroxy acid), a polyhydroxy butyric acid, a polycaprolactone, a polyorthoester, a polyanhydride, and the like. Preferred polymers are poly(D,L-lactide-co-glycolides), more preferable those having a lactide/glycolide molar ratio ranging from 40:60 to 60:40 and having a molecular weight ranging from 20,000 Daltons to 70,000 Daltons. Preferred polypeptide containing molecules are bacterial and viral antigens (including HIV antigens, meningitis B antigens, streptococcus B antigens, and Influenza A hemagglutinin antigens).
摘要:
The invention provides, inter alia, immunogenic compositions comprising a first antigen, at least two adjuvants, wherein a first adjuvant comprises a polymer derived from poly(lactides) and/or poly(lactide-co-glycolides), and wherein a second adjuvant comprises an imidazoquinoline, wherein said first antigen is encapsulated within, adsorbed or conjugated to, co-lyophilized or mixed with said first adjuvant, and a pharmaceutically acceptable excipient, wherein said composition elicits a cellular immune response when administered to a vertebrate subject. The invention also provides methods of producing immunogenic compositions, methods for producing a cytotoxic-T lymphocyte (CTL) response in a vertebrate subject, and methods of immunization.
摘要:
A method for producing a cellular immune response in a vertebrate subject comprising administering to the vertebrate subject a vaccine composition comprising a protein particle antigen and a pharmaceutically acceptable excipient is disclosed.
摘要:
A combination of CpG oligonucleotides and polymer microparticles is an extremely effective adjuvant for Neisserial antigens. The invention therefore provides a composition comprising: (a) a Neisserial antigen; (b) a CpG oligonucleotide; and (c) a biodegradable polymer microparticle.
摘要:
Immunogenic compositions containing phospholipid adjuvants, including microparticle and emulsion compositions. According to one aspect of the invention, an immunogenic microparticle composition is provided comprising: water; a polymer microparticle; an antigen adsorbed to the microparticle; and a phospholipid compound, e.g., a synthetic phospholipid compound comprising: (i) one or more phosphoryl groups independently selected from a phosphato group and a phosphodiester group; (ii) a plurality of linear alkane groups. According to another aspect of the invention an immunogenic emulsion composition is provided that comprises: water; a metabolizable oil; an emulsifying agent; an antigen; and a phospholipid compound, e.g., a synthetic phospholipid compound like that above. The emulsion composition is an oil-in-water emulsion having oil and aqueous phases, in which the oil phase is in the form of oil droplets, substantially all of which are less than 1 micron in diameter.
摘要:
The invention provides immunogenic compositions for mucosal delivery comprising capsular saccharides from at least two of serogroups A, C, W135 and Y of N. meningitidis. It is preferred that the capsular saccharides in the compositions of the invention are conjugated to carrier protein(s) and/or are oligosaccharides. Conjugated oligosaccharide antigens are particularly preferred. The invention also provides immunogenic compositions comprising (a) a capsular saccharide antigen from serogroup C of N. meningitidis, and (b) a chitosan adjuvant. The composition preferably comprises (c) one or more further antigens and/or (d) one or more further adjuvants. The compositions are particularly suitable for mucosal delivery, including intranasal delivery. The use of chitosan and/or detoxified ADP-ribosylating toxin adjuvants enhances anti-meningococcal mucosal immune responses and can shift the Th1/Th2 bias of the responses.
摘要:
An immunological adjuvant comprises an aluminium salt, an immunostimulatory oligonucleotide and a polycationic polymer, wherein the oligonucleotide and the polymer ideally associate with each other to form a complex. The adjuvant can be included in a composition with an immunogen e.g. to elicit an immune response that protects against a bacterial disease or a fungal disease.
摘要:
A combination of CpG oligonucleotides and polymer microparticles is an extremely effective adjuvant for Neisserial antigens. The invention therefore provides a composition comprising: (a) a Neisserial antigen; (b) a CpG oligonucleotide; and (c) a biodegradable polymer microparticle.
摘要:
Compositions are provided which include hyaluronic acid derivatives in combination with vaccine antigens, and optionally adjuvants, for mucosal delivery. Also provided are methods of making the compositions, as well as methods of immunization using the same.