alexa High Efficacy in Hyperthermia-associated with Polyphosphate Magnetic Nanoparticles for Oral Cancer Treatment | OMICS International | Abstract
ISSN: 2157-7439

Journal of Nanomedicine & Nanotechnology
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Research Article

High Efficacy in Hyperthermia-associated with Polyphosphate Magnetic Nanoparticles for Oral Cancer Treatment

Candido NM1, Calmon MF1, Taboga SR1, Bonilha JL2, dos Santos MC3, Lima ECD3, Sousa CRS4, Lacava ZGM4 and Rahal P1*

1São Paulo State University “Júlio de Mesquita Filho”, UNESP, Institute of Bioscience, Language & Literature and Exact Science, Department of Biology, 15054-000, São José do Rio Preto, SP, Brazil

2Medical School of São José do Rio Preto, FAMERP, Department of Pathology and Forensic Medicine, 15090-000, São José do Rio Preto, SP, Brazil

3Federal University of Goiás, UFG, Institute of Chemistry, P.C. 131, 74001-970, Goiânia, GO, Brazil

4University of Brasilia, UnB, Institute of Biological Sciences, CNANO, GEM, 70910-900, Brasilia, DF, Brazil

*Corresponding Author:
Paula Rahal
São Paulo State University “Júlio de Mesquita Filho”, UNESP
Institute of Biosciences, Letters and Exact Sciences
Department of Biology, Rua Cristovao Colombo, 2265
Jardim Nazareth, CEP: 15054-000, São José do Rio Preto, SP, Brazil
Tel: +551732212379
Fax: +551732212390
E-mail: [email protected]

Received Date: May 10, 2014; Accepted Date: June 02, 2014; Published Date: June 09, 2014

Citation: Candido NM, Calmon MF, Taboga SR, Bonilha JL, dos Santos MC, et al. (2014) High Efficacy in Hyperthermia-associated with Polyphosphate Magnetic Nanoparticles for Oral Cancer Treatment. J Nanomed Nanotechnol 5:205. doi:10.4172/2157-7439.1000205

Copyright: © 2014 Candido NM, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Nanotherapy applied to cancer treatment is constantly evolving, and new approaches to current techniques, such as magnetohyperthermia, are being implemented to solve and minimize the limitations of conventional therapeutic strategies. The purpose of this study was to investigate the action of polyphosphate-coated maghemite nanoparticles (MNPs) on oral squamous cell carcinoma. Human oral cancer cells (UM-SCC14A) were incubated with MNPs at various concentrations and subjected to cell proliferation tests (MTT), apoptosis assays and transmission electron image analysis. Viability and apoptotic events were time and dose dependent. These in vitro tests showed that at the intermediate concentration tested there is no significant toxicity, as confirmed by transmission electron microscopy. For this reason this MNPs concentration was chosen for the subsequent in vivo tests. Oral tumor induction was performed by applying the carcinogen DMBA to Syrian hamsters. Animals were then treated by magnetohyperthermia using MNPs. No signs of general clinical symptoms of toxicity or abnormal behavioral reactions were observed. However, animals treated with MNPs and exposed to the alternating magnetic field in the hyperthermia procedure exhibited a significant and time dependent cancer regression, as confirmed by histopathological analyses and immunohistochemistry. Actually, in quantitative terms of the magnetotherapy efficacy involving these polyphosphate-coated MNPs, 100% recovery (12/12) was observed in the oral cancer tumor bearing Syrian hamsters seven days after the treatment with the magnetohyperthermia procedure. Data supports the suggestion that the MNPs-mediated hyperthermia represents a promising strategy for the treatment of oral cancer.


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