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• W2808009871 startingPage "22951" @default.
• W2808009871 abstract "More than 20 years after its approval by the Food and Drug Administration (FDA), liposomal doxorubicin (DOX) is still the drug of choice for the treatment of breast cancer and other conditions such as ovarian cancer and multiple myeloma. Yet, despite the efforts, liposomal DOX did not satisfy expectations at the clinical level. When liposomal drugs enter a physiological environment, their surface gets coated by a dynamic biomolecular corona (BC). The BC changes liposome's synthetic identity, providing it with a new one, referred to as biological identity (size, aggregation state, and BC composition). Today, the concept is emerging that specific BCs may determine either success (e.g., stealth effect and accumulation at the target site) or failure (e.g., rapid blood clearance and off-target interactions) of liposomal drugs. To get a comprehensive investigation of liposome synthetic identity, biological identity, and cellular response as a function of human plasma (HP) concentration, here we used a straightforward combination of quantitative analytical and imaging tools, including dynamic light scattering, microelectrophoresis, synchrotron small-angle X-ray scattering, transmission electron microscopy (TEM), fluorescence lifetime imaging microscopy (FLIM), nano-liquid chromatography tandem mass spectrometry/mass spectrometry (nano-LC-MS/MS), confocal microscopy, flow cytometry, and cell viability assays. Doxoves was selected as a reference. Following exposure to HP, Doxoves was surrounded by a complex BC that changed liposome's synthetic identity. Observations made with nano-LC-MS/MS revealed that the BC of Doxoves did not evolve as a function of HP concentration and was poorly enriched of typical opsonins (complement proteins, immunoglobulins, etc.). This provides a possible explanation for the prolonged blood circulation of liposomal DOX. On the other hand, flow cytometry showed that protein binding reduced the internalization of DOX in MCF7 and MDA-MB-435S human breast carcinoma. Combining FLIM and TEM experiments, we clarified that reduction in DOX intracellular content was likely due to the frequent rupture of the liposome membrane and consequent leakage of the cargo. In light of reported results, we are prompted to speculate that a detailed understanding of BC formation, composition, and effects on liposome stability and uptake is an indispensable task of future research in the field, especially along the way to clinical translation of liposomal drugs." @default.
• W2808009871 created "2018-06-21" @default.
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• W2808009871 date "2018-06-15" @default.
• W2808009871 modified "2023-09-30" @default.
• W2808009871 title "Human Biomolecular Corona of Liposomal Doxorubicin: The Overlooked Factor in Anticancer Drug Delivery" @default.
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• W2808009871 doi "https://doi.org/10.1021/acsami.8b04962" @default.
• W2808009871 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29905462" @default.
• W2808009871 hasPublicationYear "2018" @default.
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