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- W2955010346 endingPage "109121" @default.
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- W2955010346 abstract "Breast cancer is a fairly common cancer with high mortality in women worldwide. Targeted nano-drug delivery system for breast cancer treatment has achieved encouraging results, because of increased drug concentration at the tumor site, thereby improving biocompatibility and blood half-life while reducing chemoresistance. However, the absence of available target on cancer cells is one of the major obstacles for triple-negative breast cancer (TNBC). Increasing studies have shown that heparanase (HPA) is highly expressed in many cancers, including TNBC. Thus paclitaxel(PTX) -encapsulated PEGylated PLGA nanoparticles were developed and further surface-functionalized with the HPA aptamers (Apt(S1.5)-PTX-NP). Moreover, targeting and cytotoxicity of Apt(S1.5)-PTX-NP to TNBC cells were evaluated with MDA-MB-231 as a model. These nanoparticles bonded to the HPA overexpressed on the surface of TNBC cells and were taken up by these cells, resulting in remarkably enhanced cellular toxicity compared with non-targeted PTX-NP that lack the HPA aptamer (P < 0.01). Furthermore, Apt(S1.5)-PTX-NP significantly exhibited enhanced anti-invasive and superior anti-angiogenesis activity compared with those of other experiment groups at low administration dosage. The Apt(S1.5)-PTX-NP demonstrated the most dramatic efficacy with the final mean tumor sizes of 157.30 ± 41.09 mm3 (mean ± SD; n = 10) in vivo treatment. Thus, the present study indicated that HPA is a promising target for drug delivery to TNBC cells, and nanoparticle-HPA-aptamer bioconjugates can provide new insights for TNBC treatment." @default.
- W2955010346 created "2019-07-12" @default.
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- W2955010346 date "2019-09-01" @default.
- W2955010346 modified "2023-10-17" @default.
- W2955010346 title "HPA aptamer functionalized paclitaxel-loaded PLGA nanoparticles for enhanced anticancer therapy through targeted effects and microenvironment modulation" @default.
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- W2955010346 doi "https://doi.org/10.1016/j.biopha.2019.109121" @default.
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