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• W3209112043 abstract "Objective: The purpose of this study was to investigate the anticancer activity and the potential imaging use of the innovative combination of magnetic nanoparticles (MNPs)-Fe3O4, paclitaxel (PTX), and trastuzumab (Herceptin) in HER2-positive breast cancer. Methods: MNPs-Fe3O4 was synthesized and underwent water phase transfer and hydrophobic molecular loading, and its surface was then coupled with Herceptin mono-antibody. The morphological characteristics of MNPs-Fe3O4 were observed under transmission electron microscopy (TEM). Effects of PTX-Herceptin-MNPs-Fe3O4 on breast cancer cells were evaluated using the 3-(4,5-dimethylthiazol-2-yl)-2,4-diphenyltetrazolium bromide assay and the flow cytometric apoptosis assay. To establish a xenograft model, we injected breast cancer SK-BR-3 cells into the left thighs of nude mice. We measured the effect of PTX-Herceptin-MNPs-Fe3O4 on tumor growth by measuring tumor size and calculating inhibition rate with immunohistochemistry analysis further performed, and analyzed MNPs-Fe3O4 accumulation in tumor lesions using in vivo magnetic resonance imaging and in vivo fluorescence imaging. Results: Most MNPs were in spherical shape of about 10 nm in diameter observed under TEM. PTX-Herceptin-MNPs-Fe3O4 showed greater cytotoxic effects, and induced a higher apoptosis rate of SK-BR-3 cells than all the other groups, with corresponding changes of apoptosis-related proteins. Meanwhile, the in vivo tumor xenograft model showed that tumor inhibition rate in the PTX-Herceptin-MNPs-Fe3O4 group was higher than in the PTX-Herceptin group. Furthermore, PTX-Herceptin-MNPs-Fe3O4 enhanced the T2 imaging contrast enhancement effect on tumors in tumor-bearing mice. Conclusion: The novel PTX-Herceptin-MNPs-Fe3O4 combination may represent a promising alternative breast cancer treatment strategy and may facilitate tumor imaging." @default.
• W3209112043 created "2021-11-08" @default.
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• W3209112043 date "2021-10-28" @default.
• W3209112043 modified "2023-10-17" @default.
• W3209112043 title "Preclinical Assessment of Paclitaxel- and Trastuzumab-Delivering Magnetic Nanoparticles Fe3O4 for Treatment and Imaging of HER2-Positive Breast Cancer" @default.
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• W3209112043 doi "https://doi.org/10.3389/fmed.2021.738775" @default.
• W3209112043 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8581045" @default.
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