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Issue 10, 2012
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Noninvasive assessment of magnetic nanoparticle–cancer cell interactions

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The success of magnetic nanoparticle (mNP)-based diagnostic and therapeutic techniques is dependent upon how the mNP are distributed in vivo. The potential efficacy and timing of a given magnetic nanoparticle treatment or diagnostic test is largely determined by the number of nanoparticles in each tissue and microscopic compartment: e.g., in the intravascular and extravascular spaces, in the interstitial space, cell surface and in cell cytoplasm. Techniques for monitoring these cell-level interactions generally require the harvesting and destruction of tissues or cells at each time point of interest. We present a method (magnetic spectroscopy of Brownian motion, MSB) for longitudinally monitoring nanoparticle binding to cell surface proteins and uptake by cancer cells in vitro using the harmonics of the magnetization produced by the nanoparticles. These harmonics can be measured rapidly and noninvasively without the need for nanoparticle modifications and without damaging the cells. We demonstrate sensitivity of this harmonic signal to the nanoparticles' microenvironment and use this technique to monitor the nanoparticle binding activities of different cell lines.

Graphical abstract: Noninvasive assessment of magnetic nanoparticle–cancer cell interactions

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Publication details

The article was received on 25 May 2012, accepted on 16 Aug 2012 and first published on 17 Aug 2012

Article type: Technical Innovation
DOI: 10.1039/C2IB20130E
Citation: Integr. Biol., 2012,4, 1283-1288
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    Noninvasive assessment of magnetic nanoparticle–cancer cell interactions

    A. J. Giustini, I. Perreard, A. M. Rauwerdink, P. J. Hoopes and J. B. Weaver, Integr. Biol., 2012, 4, 1283
    DOI: 10.1039/C2IB20130E

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