A composition comprising a polycationic agent and a polyanionic agent, and kits comprising the composition, is provided. In embodiments, the polyanionic agent is a nucleic acid and the polycationic agent is a modified polyalkyleneimine polymer.

The invention provides a method for delivering a cargo molecule into a cell using a targeted DNA-based carrier (e.g., DNA dendrimer). Compositions and kits useful in the practice of the methods are also provided.

The invention provides a method for delivering a cargo molecule into a cell using a targeted DNA-based carrier (e.g., DNA dendrimer). Compositions and kits useful in the practice of the methods are also provided.

Provided herein are anti-VEGF-A antibodies and antibody conjugates thereof. Some embodiments of the antibodies can be conjugated to a moiety, such as a HEMA-PC polymer. Some embodiments of the antibody conjugates can retain or enhance antibody activity. The antibody and conjugate thereof can be particularly useful for treating diabetic retinopathy. Further provided are methods for conjugation of a polymer to a protein such as an antibody, such as IgG1.

A composition comprising a polycationic agent and a polyanionic agent, and kits comprising the composition, is provided. In embodiments, the polyanionic agent is a nucleic acid and the polycationic agent is a modified polyalkyleneimine polymer.

Provided herein are peptide-oligomer-conjugates. Also provided herein are methods of treating a central nervous system disorder, a muscle disease, a viral infection, or a bacterial infection in a subject in need thereof, comprising administering to the subject 5 peptide-oligomer-conjugates described herein.

The present invention relates to a new class of cationic linear polyphosphazenes bearing as side groups a hydrophilic poly(ethylene glycol) and a spacer group selected from the group consisting of lysine, oligopeptides containing lysine, amino-ethanol, amino-propanol, amino-butanol, amino-pentanol and amino-hexanol, and the polyphosphazene-drug conjugates comprising hydrophobic anticancer drugs by covalent bonding and the preparation methods thereof. The present polyphosphazene-drug conjugates exhibit outstanding tumor selectivity and low toxicity.

The present invention relates to a novel delivery system for delivering therapeutic agents into living cells, and more particularly, to novel chemical moieties that are designed capable of targeting and/or penetrating cells or other targets of interest and further capable of binding therapeutic agents to be delivered to these cells, and to delivery systems containing same.

Compounds useful as biologically active compounds are disclosed. The compounds have the following structure (I):

##STR00001##

or a stereoisomer, tantomer or salt thereof, wherein R.sup.1, R.sup.2, R.sup.3, L, L.sup.1, L.sup.2, L.sup.3, M and n are as defined herein. Methods associated with preparation and use of such compounds is also provided.

The present invention relates to polymers, especially polymers useful as hydrogels, and to use of hydrogels for repair or restoration of tissue. In particular, the polymers and hydrogels of the present invention can be used for the repair or restoration of cartilage, especially articular cartilage. The polymers comprise at least a monomer for binding water, a monomer for imparting mechanical properties and a monomer for binding to an extracellular protein. The hydrogels comprise a polymer comprising at least a monomer for binding water and a monomer for binding to an extracellular protein. Crosslinking polymers by binding of said extra-cellular matrix protein forms hydrogels.