CONTROLLED MOLECULAR WEIGHT AMINO ACID POLYMERS HAVING FUNCTIONALIZABLE BACKBONES AND END GROUPS AND PROCESSES FOR PREPARING THE SAME
申请人:Scholz Carmen
公开号:US20090131589A1
公开(公告)日:2009-05-21
The present disclosure relates to processes for preparing metal-free, mono-dispersed polymers of amino acids. The polymers include homopolymers, random copolypeptides, block copolypeptides, block copolymers with at least one peptidyl block, grafted copolypeptides, and polypetidyl dendrimers. The disclosed process does not make use of a heavy metal catalyst, inter alia, copper or nickel containing reagents. The disclosed process encompasses a “living polymerization” such that the growth of each polymer chain is not truncated or otherwise halted by undesirable side reactions or limitations due to the length or size of the growing polymer chain, provides amino acid comprising polymers having a narrow polydispersity, is conducted at lower temperatures, and avoids the premature secondary folding that inhibits the formation of polymers having a low polydispersity index. This abstract is intended to provide key words and search terms for use in searching patent and patent application data bases and is not intended to limit the subject matter of the disclosure.
Disclosed is a polymer composite (polyplex) that contains nucleic acid, a cationic polymer, and an anionic polymer. The anionic polymer covers the surface of the composite comprising the cationic polymer and nucleic acid, has a negative charge at neutral pH, and can change so as to have a positive charge at mildly acidic pH.
A polymer compound selected from a homopolymer of (a) and a block copolymer of (b). (a) A homopolymer comprising a polyether segment having a side chain including a primary amine. (b) A block copolymer of a polyether segment having a side chain including a primary amine, and a poly(ethylene glycol) chain.
The invention provides a polyamide compounds and compositions, in addition to methods for their preparation and methods for their use. The invention also provides micelle compositions that include encapsulated therapeutic agents, for example, nucleic acids or prodrugs, and methods for their preparation. The invention further provides methods of delivering therapeutic agents to cells and methods of activating therapeutic prodrugs.
MIXED CHARGE COPOLYMERS AND HYDROGELS
申请人:University of Washington
公开号:US20150322189A1
公开(公告)日:2015-11-12
Nonfouling copolymers and hydrogels comprising positively charged repeating units or latent positively charged repeating units and negatively charged units or latent positively charged units.