| 摘要 |
This invention describes a method for delivery of a therapeutic agent to target cells. Liposome delivery vesicles binds to a specific cell population via a targeting molecule attached to the liposome surface. After the liposomes bind to a target cell they are internalized into compartments within the cell called endosomes. It has been shown by prior art that by encapsulating a pore forming bacterial hemolysin into the lumen of a liposome, the endosome is broken down and drug is delivered into the cell cytoplasm. Instead of encapsulating the hemolysin within the liposome, this invention improves on current techniques by associating the hemolysin with the lipid membrane of the liposome. This modification reduces development cost significantly, eases production methods and increases the effectiveness and versatility of the treatment. Using this technique, we have demonstrated effective targeting and killing of Her-2 overexpressing tumor cells.
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