| 摘要 |
PURPOSE: A composition for anionic drug delivery, containing poly lactic acid is provided to ensure high stability of anionic drugs in blood or body fluid. CONSTITUTION: A composition for anionic drug delivery contains anionic drug, cationic lipid, amphiphilic block copolymers, and polylactic acid. The anionic drug and cationic lipid form acomposite. The anionic drug is a nucleic acid material. The nucleic acid material is cholesterol, tocopherol, or fatty acid of 10-24 carbon atoms. The amphiphilic block copolymer has a hydrophilic A block and a hydrophobic B block. The hydrophilic A block is polyalkylene glycol, polyvinyl alcohol, polyvinyl pyrrolidone, polyacrylamide, or derivative thereof.
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