Abstract: The present invention relates to nanogel networks having at least one cross-linked polyionic polymer fragment and at least one nonionic water-soluble polymer fragment, and compositions thereof, having at least one suitable biological agent.

Abstract: Compositions for stabilizing polynucleic acids and increasing the ability of polynucleic acids to cross cell membranes and act in the interior of a cell. In one aspect, the invention provides a polynucleotide complex between a polynucleotide and certain polyether block copolymers. The polynucleotide complex can further include a polycationic polymer, as well as suitable targeting molecules and surfactants. The invention also provides a polynucleotide complex between a polynucleotide and a block copolymer comprising a polyether block and a polycation block.

Abstract: Compositions induce the activation of dendritic cells comprising a polynucleotide, such as viruses, RNA, DNA, plasmid DNA, or derivatives thereof and at least one block copolymer of alkylethers. The present invention further relates to compositions for inducing the activation of dendritic cells wherein the block copolymers are PLURONIC F127 and L61. More particular, the compositions comprise block copolymers PLURONIC F127/PLURONIC L61. The invention also relates to methods of inducing the activation of dendritic cells in animals comprising administering the compositions of the invention. Additionally, the present invention relates to methods of increasing the immune response of animals comprising administering the compositions of the present invention.

Abstract: The present invention relates to nanogel networks having at least one cross-linked polyionic polymer fragment and at least one nonionic water-soluble polymer fragment, and compositions thereof, having at least one suitable biological agent.

Abstract: Compositions and methods for intramuscular administration of polynucleotides, such as RNA, DNA, or derivatives thereof comprising polynucleotides and block copolymers of alkylethers. The invention also provides compositions and methods for stabilizing polynucleic acids and increasing the ability of polynucleic acids to cross cell membranes and act in the interior of a cell.

Abstract: Copolymer networks having at least one cross-linked polyamine polymer fragment and at least one nonionic water-soluble polymer fragment, and compositions thereof, having at least one suitable biological agent.

Abstract: Compositions for stabilizing polynucleic acids and increasing the ability of polynucleic acids to cross cell membranes and act in the interior of a cell. In one aspect, the invention provides a polynucleotide complex between a polynucleotide and certain polyether block copolymers. The polynucleotide complex can further include a polycationic polymer, as well as suitable targeting molecules and surfactants. The invention also provides a polynucleotide complex between a polynucleotide and a block copolymer comprising a polyether block and a polycation block.

Abstract: The invention provides compositions for stabilizing polynucleic acids and increasing the ability of polynucleic acids to cross cell membranes and act in the interior of a cell. In one aspect, the invention provides a polynucleotide complex between a polynucleotide and certain polyether block copolymers. Preferably the polynucleotide complex will further include a polycationic polymer. In another aspect, the invention provides a polynucleotide complex between a polynucleotide and a block copolymer comprising a polyether block and a polycation block. In yet another aspect, the invention provides polynucleotides that have been covalently modified at their 5' or 3' end to attach a polyether polymer segment. In still another aspect, the invention provides certain preferred polycationic polymers.