DNA-TiO2 nanoconjugates labeled with magnetic resonance contrast agents

Paul J. Endres, Tatjana Paunesku, Stefan Vogt, Thomas J. Meade*, Gayle E. Woloschak

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

103 Scopus citations


Recent efforts have shown that nanoscale materials, specifically, metal-based nanoparticles, hold particular promise for the development of multifunctional imaging probes. These new materials provide the means to chaperone and concentrate both drugs and contrast agents in specific organs, tissues, and cells. Therefore, we have prepared a Gd(III)-modified DNA-TiO2 semiconducting nanoparticle that is detectable in cells by MR imaging. These labeled particles are retained at specific subcellular locations via DNA hybridization to intracellular targets, hence creating the first nanoparticle system capable of targeting specific DNA sequences while being simultaneously detected via MR imaging.

Original languageEnglish (US)
Pages (from-to)15760-15761
Number of pages2
JournalJournal of the American Chemical Society
Issue number51
StatePublished - Dec 26 2007

ASJC Scopus subject areas

  • General Chemistry
  • Biochemistry
  • Catalysis
  • Colloid and Surface Chemistry


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