ArticlebioRxiv : the preprint server for biology2026
Solvent-free Nanoparticle Assembly Protocol (SNAP): one-pot formulation of drug loaded polyester nanoparticles and their vessel size-dependent perivascular transport in the brain.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This work describes a new approach for rapid and reproducible formulation of drug loaded biodegradable nanoparticles based on polyester copolymers, including poly(lactic acid)-poly(ethylene glycol) (PLA-PEG) and poly(caprolactone)-poly(ethylene glycol) (PCL-PEG). The new approach, termed Solvent-free Nanoparticle Assembly Protocol (SNAP), carries several advantages over conventional polyester formulation strategies, including very rapid formulation (minutes) and the ability to use nanoparticles immediately without lengthy solvent evaporation or washing steps. Altering polyester molecular weight and concentration, alongside the introduction of specific functional groups yielded precise control of nanoparticle properties, including size, shape, surface charge, drug release and loading. We examined loading of multiple therapeutic compounds, including diclofenac, loperamide, bortezomib, CT179, panobinostat, docetaxel, methotrexate, and camptothecin. The SNAP protocol facilitated the rapid production of stable, drug-loaded nanoparticles with a narrow size distribution and generally good drug loading. Using Fluorescence Resonance Energy Transfer (FRET) and size exclusion chromatography (SEC) with a focus on the model agent Rhodamine B, we were able to carefully examine stability of the nanoparticle and assess the distribution of small molecules within the polymer as well as nanoparticle stability.
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