Spatial and temporal measurements of temperature and cell viability in response to nanoparticle-mediated photothermal therapy

Author:

Whitney Jon R1,Rodgers Amanda2,Harvie Erica3,Carswell William F4,Torti Suzy5,Puretzky Alex A6,Rouleau Christopher M6,Geohegan David B6,Rylander Christopher G3,Rylander Marissa N3

Affiliation:

1. Department of Mechanical Engineering & School of Biomedical Engineering & Sciences, Virginia Tech, VA 24061, USA; ICTAS 410 ICTAS, Stanger Street (MC 0193) Blacksburg, VA 24061, USA.

2. Department of Industrial Systems & Engineering, Virginia Tech, VA 24061, USA

3. Department of Mechanical Engineering & School of Biomedical Engineering & Sciences, Virginia Tech, VA 24061, USA; ICTAS 410 ICTAS, Stanger Street (MC 0193) Blacksburg, VA 24061, USA

4. Department of Biological Systems Engineering, Virginia Tech, VA 24061, USA

5. Molecular Microbial & Structural Biology, University of Connecticut, Farmington, CT 06030, USA

6. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6488 USA

Abstract

Aim: Nanoparticle-enhanced photothermal therapy is a promising alternative to tumor resection. However, quantitative measurements of cellular response to these treatments are limited. This article introduces a Bimodal Enhanced Analysis of Spatiotemporal Temperature (BEAST) algorithm to rapidly determine the viability of cancer cells in vitro following photothermal therapy alone or in combination with nanoparticles. Materials & methods: To illustrate the capability of the BEAST viability algorithm, single wall carbon nanohorns were added to renal cancer (RENCA) cells in vitro and time-dependent spatial temperature maps measured with an infrared camera during laser therapy were correlated with post-treatment cell viability distribution maps obtained by cell-staining fluorescent microscopy. Conclusion: The BEAST viability algorithm accurately and rapidly determined the cell viability as a function of time, space and temperature. Original submitted 13 July 2011; Revised submitted 12 March 2012; Published online 20 July 2012

Publisher

Future Medicine Ltd

Subject

Development,General Materials Science,Biomedical Engineering,Medicine (miscellaneous),Bioengineering

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