Editors : A. Alexandrou, J. Cheon, H. Mattoussi, V. Rotello
a1 shukoor@uni-mainz.de, Universität Mainz, Institut für Anorganische Chemie und Analytische Chemie, Mainz, Germany
a2 natalio@uni-mainz.de, Universität Mainz, Institut für Physiologische Chemie, Mainz, Germany
a3 schladt@uni-mainz.de, Germany
a4 barz@uni-mainz.de, Johannes Gutenberg-Universität Mainz, Institut für Organische Chemie, Mainz, Germany
a5 tahir@uni-mainz.de, Germany
a6 stefanw@uni-mainz.de, Klinikum der Johannes Gutenberg-Universität Mainz, Klinik und Poliklinik für Diagnostische und Interventionelle Radiologie, Mainz, Germany
a7 zentel@uni-mainz.de, Johannes Gutenberg-Universität Mainz, Institut für Organische Chemie, Mainz, Germany
a8 lschreib@uni-mainz.de, Klinikum der Johannes Gutenberg-Universität Mainz, Klinik und Poliklinik für Diagnostische und Interventionelle Radiologie, Mainz, Germany
a9 brieger@hno.klinik.uni-mainz.de, Klinikum der Johannes Gutenberg-Universität Mainz, HNO Klinik, Labor für Tumorbiologie, Mainz, Germany
a10 hschroed@uni-mainz.de, Germany
a11 wmueller@uni-mainz.de, Germany
a12 tremel@uni-mainz.de, Universität Mainz, Institut für Anorganische Chemie und Analytische Chemie, Duesbergweg 10-14, Mainz, 55099, Germany, +49 6131 3925135, +49 6131 3925605
Abstract
Initiation of pathways that lead to proliferation and chemoresistance by Toll-like receptors (TLRs) is an important factor in cancer progression. Here, we show the response of human cancer cells to TLR signaling inevitably linked to tumor biology. The approach is based on tailored multifunctional magnetic nanoparticles equipped with pathogen-derived ligands (CpG) functioning as TLR agonists (molecular component) to investigate the impact of transcription factor immune activation on human cancer cells. Magnetic nanoparticles (MnO and bifunctional Au-MnO) particles were covalently coated with a multifunctional polymer, displaying no cytotoxicity, to being able to enter cells while carrying foreign DNA (unmethylated CpG) to recognize intracellular TLR 9. Both, the particle and the nucleic acid are tagged with fluorescent markers for simultaneous visualization inside the cell. Apart from optical imaging, the magnetism of the particles also allows magnetic resonance imaging of organisms.
(Received November 29 2009)
(Accepted May 04 2010)
Key Words