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- W2201638733 abstract "The purpose of this study was to investigate whether the conjugation of anti-HER2-Affibody to cisplatin PEGylated liposome can efficiently enhance the therapeutic effectiveness of the targeted liposome.First, Affibody molecules were incubated with Mal-PEG2000-DSPE micelle to afford formation of a maleimide-mediated thioether coupling to the COOH-terminal cysteine of Affibody. Cisplatin-loaded liposomes composed of hydrogenated soy phosphatidylcholine/ cholesterol/mPEG2000-DSPE (56.5:38.5:5 molar ratio) (150 mM) were prepared and characterized by their physicochemical properties. Affibody-conjugated micelles were then transferred into preformed liposomes by means of post insertion. The cytotoxicity and cellular uptake of Affibody-targeted (affisome) and nontargeted liposomes were tested in HER2(+) SK-BR-3, and the in vivo therapeutic activity was evaluated in TUBO breast cancer models.Anti-HER2 affisome demonstrated a higher amount of platinum intracellularly, and affected HER2(+)-SK-BR-3 cell death was at lower concentrations compared with its liposome counterparts. Further, cisplatin-affisome showed greater therapeutic efficiency than nontargeted liposome in HER2(+)-TUBO models. Equally promising, the affisome-treated mice did extend the survival of animals by several days and even left one tumor-free survivor.Affibody-targeting endowed cisplatin liposomes with significantly enhanced, albeit modest, therapeutic activity in HER2-overexpressing tumor model; however, further values are yet to be determined to advance clinical translation of these targeted nanoparticulates." @default.
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- W2201638733 date "2015-12-16" @default.
- W2201638733 modified "2023-09-23" @default.
- W2201638733 title "Improved therapeutic activity of HER2 Affibody-targeted cisplatin liposomes in HER2-expressing breast tumor models" @default.
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- W2201638733 doi "https://doi.org/10.1517/17425247.2016.1121987" @default.
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