Aventis Pasteur Limited

Connaught Laboratories Limited

Aventis Pasteur Limited/aventus Pasteur Limitee

Kenneth K Sokoll

Michel Henri Klein

Pele Chong

Copolymers designed for use as particulate carriers containing functionalizable amino acid subunits for coupling with targeting ligands are described. The copolymers are polyesters composed of &agr;-hydroxy acid subunits such as D,L-lactide and pseudo-&agr;-amino acid subunits which may be derived from serine or terpolymers of D,L-lactide and glycolide and pseudo-&agr;-amino acid subunits which may be derived from serine. Stable vaccine preparations useful as delayed release formulations containing antigen or antigens and adjuvants encapsulated within or physically mixed with polymeric mircoparticles are described. The particulate carriers are useful for delivering agents to the immune system of a subject by mucosal or parenteral routes to produce immune responses, including antibody and protective responses.

Biodegradable targetable microparticle delivery system

Copolymers designed for use as particulate carriers containing functionalizable amino acid subunits for coupling with targeting ligand are described. The copolymers are polyesters composed of &agr;-hydroxy acid subunits such as D,L-lactide and &agr;-amino acid subunits such as serine or in the preferred embodiment, terpolymers of D,L-lactide and glycolide and &agr;-amino acid subunits such as serine. Stable vaccine preparations useful as delayed release formulations containing antigen(s) or antigen(s) and co-adjuvants encapsulated within or physically mixed with polymeric microparticles are described. The particulate carriers are useful for delivering agents to the immune system of a subject by mucosal or parenteral routes to produce immune responses, including antibody responses.

Copolymers designed for use as particulate carriers containing functionalizable amino subunits for coupling with targeting ligand are described. The copolymers are polyesters composed of .alpha.-hydroxy acid subunits such as D, L-lactide and .alpha.-amino acid subunits such as serine or in the preferred embodiment, terpolymers of D,L-lactide and glycolide and .alpha.-amino acid subunits such as serine. Stable vaccine preparations useful as delayed release formulations containing antigen(s) or antigen(s) and co-adjuvants encapsulated within or physically mixed with ploymeric microparticles are described. The particulate carriers are useful for delivering agents to the immune system of a subject by mucosal or parenteral routes to produce immune responses, including antibody responses.

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Alton, Canada

Kenneth K Sokoll