Directing Nanoparticle Biodistribution through Evasion and Exploitation of Stab2-Dependent Nanoparticle Uptake

Frederick Campbell, Frank L. Bos, Sandro Sieber, Gabriela Arias-Alpizar, Bjørn E. Koch, Jörg Huwyler, Alexander Kros, Jeroen Bussmann

Research output: Contribution to journalArticlepeer-review

165 Citations (Scopus)


Up to 99% of systemically administered nanoparticles are cleared through the liver. Within the liver, most nanoparticles are thought to be sequestered by macrophages (Kupffer cells), although significant nanoparticle interactions with other hepatic cells have also been observed. To achieve effective cell-specific targeting of drugs through nanoparticle encapsulation, improved mechanistic understanding of nanoparticle-liver interactions is required. Here, we show the caudal vein of the embryonic zebrafish (Danio rerio) can be used as a model for assessing nanoparticle interactions with mammalian liver sinusoidal (or scavenger) endothelial cells (SECs) and macrophages. We observe that anionic nanoparticles are primarily taken up by SECs and identify an essential requirement for the scavenger receptor, stabilin-2 (stab2) in this process. Importantly, nanoparticle-SEC interactions can be blocked by dextran sulfate, a competitive inhibitor of stab2 and other scavenger receptors. Finally, we exploit nanoparticle-SEC interactions to demonstrate targeted intracellular drug delivery resulting in the selective deletion of a single blood vessel in the zebrafish embryo. Together, we propose stab2 inhibition or targeting as a general approach for modifying nanoparticle-liver interactions of a wide range of nanomedicines.

Original languageEnglish
Pages (from-to)2138-2150
Number of pages13
JournalACS Nano
Issue number3
Publication statusPublished - 27 Mar 2018


  • endothelial cells
  • liposomes
  • nanomedicine
  • scavenger receptor
  • stabilin
  • targeted drug delivery
  • zebrafish


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