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- W4377013014 abstract "Podophyllotoxin (PPT) is an active natural pharmaceutical component with potent anticancer activity. However, due to its poor water solubility and serious side effects, its medical applications are limited. In this work, we synthesized a series of PPT dimers, which can be self-assembled into stable nanoparticles of 124-152 nm in aqueous solution and can significantly increase the solubility of PPT in aqueous solution. In addition, PPT dimer nanoparticles exhibited high drug loading capacity (>80%) and could store at 4 °C in aqueous state with good stability for at least 30 d.In vitrorelease studies showed that nanoparticles with disulfide bonds (SS NPs) can quickly release (about 96.5% drug released within 24 h) the conjugated drug in PBS buffer (pH = 7.4) in the presence of DTT. Cell endocytosis experiments showed that SS NPs enhanced cell uptake (18.56 times higher than PPT for Molm-13, 10.29 times for A2780S and 9.81 times for A2780T) and maintained antitumor effect against human ovarian tumor cells (A2780S and resistant A2780T) and human breast cancer cells (MCF-7). In addition, the endocytosis mechanism of SS NPs was revealed that these nanoparticles were mainly up-taken by macropinocytosis-mediated endocytosis. We believe that these PPT dimer-based nanoparticles will become an alternative formula for PPT, moreover the assembly behavior of PPT dimer can be extended to other therapeutic drugs." @default.
- W4377013014 created "2023-05-19" @default.
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- W4377013014 date "2023-05-30" @default.
- W4377013014 modified "2023-10-10" @default.
- W4377013014 title "Redox-responsive self-assembled podophyllotoxin twin drug nanoparticles for enhanced intracellular drug delivery" @default.
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- W4377013014 doi "https://doi.org/10.1088/1748-605x/acd6ca" @default.
- W4377013014 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37201518" @default.
- W4377013014 hasPublicationYear "2023" @default.
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