Mechanism of hard-nanomaterial clearance by the liver.

Published

Journal Article

The liver and spleen are major biological barriers to translating nanomedicines because they sequester the majority of administered nanomaterials and prevent delivery to diseased tissue. Here we examined the blood clearance mechanism of administered hard nanomaterials in relation to blood flow dynamics, organ microarchitecture and cellular phenotype. We found that nanomaterial velocity reduces 1,000-fold as they enter and traverse the liver, leading to 7.5 times more nanomaterial interaction with hepatic cells relative to peripheral cells. In the liver, Kupffer cells (84.8 ± 6.4%), hepatic B cells (81.5 ± 9.3%) and liver sinusoidal endothelial cells (64.6 ± 13.7%) interacted with administered PEGylated quantum dots, but splenic macrophages took up less material (25.4 ± 10.1%) due to differences in phenotype. The uptake patterns were similar for two other nanomaterial types and five different surface chemistries. Potential new strategies to overcome off-target nanomaterial accumulation may involve manipulating intra-organ flow dynamics and modulating the cellular phenotype to alter hepatic cell interactions.

Full Text

Duke Authors

Cited Authors

  • Tsoi, KM; MacParland, SA; Ma, X-Z; Spetzler, VN; Echeverri, J; Ouyang, B; Fadel, SM; Sykes, EA; Goldaracena, N; Kaths, JM; Conneely, JB; Alman, BA; Selzner, M; Ostrowski, MA; Adeyi, OA; Zilman, A; McGilvray, ID; Chan, WCW

Published Date

  • November 2016

Published In

Volume / Issue

  • 15 / 11

Start / End Page

  • 1212 - 1221

PubMed ID

  • 27525571

Pubmed Central ID

  • 27525571

International Standard Serial Number (ISSN)

  • 1476-1122

Digital Object Identifier (DOI)

  • 10.1038/nmat4718

Language

  • eng

Conference Location

  • England