Aptamer-functionalized, ultra-small, monodisperse silica nanoconjugates for targeted dual-modal imaging of lymph nodes with metastatic tumors

Li Tang, Xujuan Yang, Lawrence W. Dobrucki, Isthier Chaudhury, Qian Yin, Catherine Yao, Stephane Lezmi, William G. Helferich, Timothy M. Fan, Jianjun Cheng

Research output: Contribution to journalArticlepeer-review

Abstract

A dual-modal imaging probe based on size-controlled silica nanoconjugates was synthesized for targeted imaging of lymph nodes by means of both PET and near infrared fluorescence techniques. 20 nm nanoconjugates (see scheme) functionalized with an aptamer (green triangles) that targets 4T1 breast cancer cells improved the detection efficiency of sentinel lymph nodes with metastatic tumors.

Original languageEnglish (US)
Pages (from-to)12721-12726
Number of pages6
JournalAngewandte Chemie - International Edition
Volume51
Issue number51
DOIs
StatePublished - Dec 14 2012
Externally publishedYes

Keywords

  • aptamers
  • breast cancer
  • dual-modal imaging
  • metastasis targeting
  • nanoparticles

ASJC Scopus subject areas

  • General Chemistry
  • Catalysis

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