Abstract
The present study explores the application of X-ray scattering, using synchrotron radiation, to assess the diffusive transport of nanomedicines in tumor on a chip devices fabricated by 3D stereolithography using a resin with high optical and X-ray transmittance. Unlike conventional methods that require fluorescent labeling of nanoparticles, potentially altering their in vitro and in vivo behavior, this approach enables the investigation of the transport properties for unlabeled nanoparticles. In particular, the results presented confirm the influence of the porosity of the extracellular matrix-like microenvironment, specifically Matrigel, on the diffusive transport of oligonucleotide-functionalized gold nanoparticles. The analysis of the scattering patterns allows to create 2D maps showing the nanoparticle distribution with high spatial resolution. The proposed approach demonstrates the potential for studying other factors involved in nanoparticle diffusion processes. By implementing X-ray scattering to track unmodified nanomedicines within extracellular matrix-like microenvironments, increasingly accurate models for evaluating and predicting therapeutics transport behaviors can be developed.
Published Version
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