Self-assembling peptide–lipoplexes for substrate-mediated gene delivery

Lipid-like Self-Assembling Peptide Nanovesicles for Drug Delivery

Amphiphilic self-assembling peptides are functional materials, which, depending on the amino acid sequence, the peptide length, and the physicochemical conditions, form a variety of nanostructures including nanovesicles, nanotubes, and nanovalves. We designed lipid-like peptides with an aspartic acid or lysine hydrophilic head and a hydrophobic tail composed of six alanines (i.e., ac-A6K-CONH2,...

Splenic gene delivery system using self-assembling nano-complex with phosphatidylserine analog.

The recognition of phosphatidylserine on the erythrocyte membrane mediates erythrophagocytosis by resident spleen macrophages. The application of phosphatidylserine to a gene vector may be a novel approach for splenic drug delivery. Therefore, we chose 1,2-dioleoyl-sn-glycero-3-phospho-L-serin (DOPS) as an analogue of phosphatidylserine for splenic gene delivery of plasmid DNA (pDNA). In the pr...

Thermosensitive Self-Assembling Block Copolymers as Drug Delivery Systems

Self-assembling block copolymers (poloxamers, PEG/PLA and PEG/PLGA diblock and triblock copolymers, PEG/polycaprolactone, polyether modified poly(Acrylic Acid)) with large solubility difference between hydrophilic and hydrophobic moieties have the property of forming temperature dependent micellar aggregates and, after a further temperature increase, of gellifying due to micelle aggregation or ...

Ultrasound-Mediated Gene Delivery

Human gene therapy holds great promise in treating not only hereditary genetic disorders, but also disease states such as cancer and viral infections, and contingencies such as stroke or myocardial infarctions. It can be achieved by delivery of a correct gene into target cells with genetic deficiency or mutations, or by transfer of a therapeutic agent such as agents targeting a cancer-causing o...

Substrate-Mediated Gene Delivery for Assessment of Signal Transduction Pathways in Cancer Cells