Targeted multimodal nano-reporters for pre-procedural MRI and intra-operative image-guidance

Joonseok Lee, Andrew C. Gordon, Hacksung Kim, Wooram Park, Soojeong Cho, Byeongdu Lee, Andrew C. Larson, Elena A. Rozhkova, Dong Hyun Kim*

*Corresponding author for this work

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

Multimodal-imaging probes offer a novel approach, which can provide detail diagnostic information for the planning of image-guided therapies in clinical practice. Here we report targeted multimodal Nd3+-doped upconversion nanoparticle (UCNP) imaging reporters, integrating both magnetic resonance imaging (MRI) and real-time upconversion luminescence imaging (UCL) capabilities within a single platform. Nd3+-doped UCNPs were synthesized as a core–shell structure showing a bright visible emission upon excitation at the near infrared (minimizing biological overheating and increasing tissue penetration depth) as well as providing strong MRI T2 contrast (high r2/r1 ratio). Transcatheter intra-arterial infusion of Nd3+-doped UCNPs conjugated with anti-CD44-monoclonal antibody allowed for high performance in vivo multimodal UCL and MR imaging of hepatocellular carcinoma (HCC) in an orthotopic rat model. The resulted in vivo multimodal imaging of Nd3+ doped core-shell UCNPs combined with transcatheter intra-arterial targeting approaches successfully discriminated liver tumors from normal hepatic tissues in rats for surgical resection applications. The demonstrated multimodal UCL and MRI imaging capabilities of our multimodal UCNPs reporters suggest strong potential for in vivo visualization of tumors and precise surgical guidance to fill the gap between pre-procedural imaging and intraoperative reality.

Original languageEnglish (US)
Pages (from-to)69-77
Number of pages9
JournalBiomaterials
Volume109
DOIs
StatePublished - Dec 1 2016

Keywords

  • Cancer
  • Interventional radiology
  • Medical imaging
  • Multimodal probe
  • Upconversion nanoparticles

ASJC Scopus subject areas

  • Bioengineering
  • Ceramics and Composites
  • Biophysics
  • Biomaterials
  • Mechanics of Materials

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