Efficient nanoparticle disruption inside the cells is a key for success with any type of drug delivery system. The efficacy of drug delivery is currently evaluated by direct visualization of labeled liposomes internalized by cells, not addressing objectively the release and distribution of the drug. Here, we propose a novel method to easily assess particle disruption and drug release into the cytoplasm. We propose the encapsulation of the cationic dye to detect an increase in fluorescence due to its specific binding to negatively charged DNA. For that, the dye needs to be released inside the cell and translocated to the nucleus. The present approach correlates the intensity of detected fluorescent dye with liposome disruption and consequently assesses drug delivery within the cells.

Assessment of nanoparticles disruption to quantify drug delivery <i>in vitro</i>

256th National Meeting (2018)

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Assessment of nanoparticles disruption to quantify drug delivery in vitro