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Advanced Functional Graphite-Coated Magnetic Nanoparticles as RF Thermal Ablation Agents for Cancer Therapies

Published online by Cambridge University Press:  01 February 2011

Yang Xu ,
Meena Waleed Mahmood ,
Zhongrui Li ,
Enkeleda Dervishi ,
Steve Trigwell ,
Vladimir P. Zharov ,
Nawab Ali ,
Viney Saini ,
Alexandru R. Biris  and
Dan Lupu
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Yang Xu
Affiliation:
[email protected], University of Arkansas at Little Rock, Nanotechnology Center & Applied Science Department, Little Rock, Arkansas, United States
Meena Waleed Mahmood
Affiliation:
[email protected], University of Arkansas at Little Rock, Nanotechnology Center & Applied Science Department, Little Rock, Arkansas, United States
Zhongrui Li
Affiliation:
[email protected], University of Arkansas at Little Rock, Nanotechnology Center & Applied Science Department, Little Rock, Arkansas, United States
Enkeleda Dervishi
Affiliation:
[email protected], University of Arkansas at Little Rock, Nanotechnology Center & Applied Science Department, Little Rock, Arkansas, United States
Steve Trigwell
Affiliation:
[email protected], NASA, Electrostatics & Surface Physics Laboratory, ASRC Aerospace, Kennedy Space Center, Florida, United States
Vladimir P. Zharov
Affiliation:
[email protected], University of Arkansas for Medical Sciences, Phillips Classic Laser Laboratories, Little Rock, Arkansas, United States
Nawab Ali
Affiliation:
[email protected], University of Arkansas at Little Rock, Nanotechnology Center & Applied Science Department, Little Rock, Arkansas, United States
Viney Saini
Affiliation:
[email protected], University of Arkansas at Little Rock, Nanotechnology Center & Applied Science Department, Little Rock, Arkansas, United States
Alexandru R. Biris
Affiliation:
[email protected], National Institute for Research & Development of Iostopic & Molecular Technologies, Cluj Napoca, Romania
Dan Lupu
Affiliation:
[email protected], National Institute for Research & Development of Iostopic & Molecular Technologies, Cluj Napoca, Romania
Alexandru S. Biris
Affiliation:
[email protected], University of Arkansas at Little Rock, Nanotechnology Center & Applied Science Department, Little Rock, Arkansas, United States
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Abstract

Graphitic shells coated ferromagnetic cobalt nanoparticles (C-Co-NPs) with diameters of around 7-9 nm cubic crystalline structures were synthesized by catalytic chemical vapor deposition (CCVD). X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis indicated that the Co-NPs inside the carbon shells were preserved in the metallic state. Confocal microscope images revealed effective penetrations of C-Co-NPs through plasmatic membranes into the nucleus of the cultured HeLa cancerous cells. Low RF radiation of 350 kHz triggered the cell death, process that was found to be dependent on the NPs concentration and application time. Compared to carbon nanostructures such as single wall carbon nanotubes, super paramagnetic cobalt nanoparticles demonstrated higher specificity for RF absorption and heating. This work indicates a great potential of a new technology for tumor thermal ablation.

Keywords

chemical vapor deposition (CVD) (deposition)core/shellCo
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1138: Symposium FF – Nanofunctional Materials, Structures and Devices for Biomedical Applications , 2008 , 1138-FF06-15
Copyright
Copyright © Materials Research Society 2009

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