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- W1844667330 abstract "Clinical efficacy of lipid nanoparticles (NPs) depend on high drug to lipid ratio, stability during circulation and sustained drug release after tumor accumulation. Achieving this is the holy grail of paclitaxel (PTX) lipid NPs due to its incompatible physicochemical properties that leads to low drug loading efficiency and tendency to crystallize leading to significant instability. These limitations could be overcome by understanding molecular interactions of PTX with lipid bilayer at spatiotemporal level but these remain poorly understood. Using computer simulations, we have investigated the interactions of PTX with model lipid bilayer at low and high drug contents. We found that PTX at low concentrations occupied the space in both hydrophobic and hydrophilic regions of the bilayer and did not exhibit significant destabilizing effect whereas at high concentrations it exclusively accumulated at hydrophilic tail region causing significant rifts in the bilayer. In silico dynamic simulations showed that conjugation of PTX to cholesterol using a flexible spacer (Suprataxel, STX) stabilized the lipid bilayer at high concentrations. To confirm this, we engineered supramolecular NPs of STX (STX-NP) and characterized the physicochemical and mechanical stability and found more efficacious than PTX in vitro. We showed that STX-NPs were more efficient than PTX in inhibiting tumor growth in 4T1 breast and K-RasLSL/+/Ptenfl/fl ovarian cancer models (p<0.01). This study shows that effective supramolecular NPs could be engineered by understanding interactions between drug and lipid layer." @default.
- W1844667330 created "2016-06-24" @default.
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- W1844667330 date "2015-04-01" @default.
- W1844667330 modified "2023-09-26" @default.
- W1844667330 title "Engineering of Supramolecular Taxane Nanoparticles by Computationally Modeling Drug‐lipid Bilayer Interactions" @default.
- W1844667330 doi "https://doi.org/10.1096/fasebj.29.1_supplement.620.7" @default.
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