Marked inhibitory effects of hybrid liposomes (HL-n; n=21, 23, 25) composed of 90 mol% l-α-dimyristoylphosphatidylcholine (DMPC) and 10 mol% polyoxyethylene(n) dodecyl ethers on the growth of two human osteosarcoma cell lines (MG-63 and U-2 OS) were obtained. Furthermore, fluorescence microscopic and flow cytometric analyses revealed the induction of apoptosis by HL-n in both cells. It is noteworthy that HL-23 could inhibit the invasion and migration of U-2 OS cells on the basis of matrigel invasion assay and scratch wound assay, respectively.
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