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• W2021651355 abstract "Mitochondrion-orientated transportation of smart liposomes has been developed as a promising strategy to deliver anticancer drugs directly to tumor sites, and these have a tremendous potential for killing cancer cells, especially those with multidrug resistance (MDR). Herein we report a novel dual-functional liposome system possessing both extracellular pH response and mitochondrial targeting properties to enhance drug accumulation in mitochondria and trigger apoptosis of drug-resistant cancer cells. Briefly, peptide D[KLAKLAK]2 (KLA) was modified with 2, 3-dimethylmaleic anhydride (DMA) and combined with 1, 2-distearoyl-sn-glycero-3-phosphoethanolamine (DSPE) to yield a DSPE-KLA-DMA (DKD) lipid. This dual-functional DKD was then mixed with other commercially available lipids to fabricate liposomes. In vitro anticancer efficacy of this liposome system was evaluated in human lung cancer A549 cells and drug-resistant lung cancer A549/Taxol cells. At tumor extracellular pH (∼6.8), liposomes could reverse their surface charge (negative to positive), facilitating liposome internalization. After cellular uptake, KLA peptide directed delivery-enabled selective accumulation of these liposomes into mitochondria and favored release of their cargo paclitaxel (PTX) into desired sites. Specifically, enhanced apoptosis of MDR cancer cells through mitochondrial signaling pathways was evidenced by release of cytochrome c and increased activity of caspase-9 and -3. These dual-functional liposomes had the greatest efficacy for treating A549 cells and A549/Taxol cells in vitro, and in treating drug-resistant lung cancer A549/Taxol cells xenografted onto nude mice (tumor growth inhibition 86.7%). In conclusion, dual-functional liposomes provide a novel and versatile approach for overcoming MDR in cancer treatment." @default.
• W2021651355 created "2016-06-24" @default.
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• W2021651355 date "2015-06-01" @default.
• W2021651355 modified "2023-10-01" @default.
• W2021651355 title "Overcoming drug-resistant lung cancer by paclitaxel loaded dual-functional liposomes with mitochondria targeting and pH-response" @default.
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• W2021651355 doi "https://doi.org/10.1016/j.biomaterials.2015.02.004" @default.
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• W2021651355 hasPublicationYear "2015" @default.
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