Abstract
Nanomedicine offers the possibility of modifying the distribution of encapsulated drugs and biomolecules. Nanomedicine could limit the transplacental passage and/or enhance the concentration of drugs in placental tissue; this approach could be exploited for the treatment of pregnancy disorders. In the context of pregnancy, tackling the biological fate of both the nanocarrier and the drug has high importance in ensuring both the mother's and the fetus' safety.In this study, we propose a method for quantifying the uptake of liposomes inside placental tissue using covalently labeled liposomes and adapting a high-performance liquid chromatography (HPLC) method using a fluorescent detector. An optimized protocol for liquid-liquid extraction of fluorescent lipids from placental tissue extracts, followed by HPLC analysis, is detailed in this chapter. The HPLC method allows the quantification of fluorescent lipids using a calibration curve, including the biological matrix and extraction procedures. The internalization rate of fluorescent liposomes within human villous placental explants was quantitatively assessed, thanks to the HPLC developed method and suitable analytical tools.
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