PLGA-encapsulated perfluorocarbon nanoparticles for simultaneous visualization of distinct cell populations by 19F MRI
Abstract
Aim:In vivo imaging using 19F MRI is advantageous, due to its ability to quantify cell numbers, but is limited for a lack of suitable labels. Here, we formulate two stable and clinically applicable labels for tracking two populations of primary human dendritic cells (DCs) simultaneously. Materials & methods: Plasmacytoid and myeloid DCs are able to take up sufficient nanoparticles (200 nm) for imaging (1012 19F's per cell), despite being relatively nonphagocytic. Results: Clinically relevant numbers of labeled DCs could be imaged in about 10 min, even on a clinical scanner. Conclusion: We demonstrate the use of perfluorocarbon nanoparticles for simultaneous 19F MRI of distinct cell populations in a clinical setting, without spectroscopic imaging.
Papers of special note have been highlighted as: • of interest; •• of considerable interest
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