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Advanced Pharmaceutical Bulletin
ISSN: 2228-5881      eISSN: 2251-7308  
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Article History
Submitted: 16 Jul 2016
Revised: 30 Dec 2016
Accepted: 25 Jan 2017
First published online: 13 Apr 2017

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Adv Pharm Bull. 2017;7(1):87-95 doi: 10.15171/apb.2017.011

In vitro Cytotoxicity Effects of 197Au/PAMAMG4 and 198Au/PAMAMG4 Nanocomposites Against MCF7 and 4T1 Breast Cancer Cell Lines

Research Article

Simin Janitabar-Darzi 1 * , Reza Rezaei 2, Kamal Yavari 1

1 Radiopharmaceutical Research and Development Laboratory, Nuclear Science and Technology Research Institute, Tehran, Iran.
2 Department of biochemistry, Faculty of Science, Zanjan University, Zanjan, Iran.

Purpose: Study on gold based therapeutic agents for cancer cells deracination has become under scrutiny in recent years owing to effective treatments are not available for rapidly progressive cancers. The aim of present study was to examine efficiency of radioactive 198Au/PAMAMG4 and non-radioactive 197Au/PAMAMG4 nancomposites against 4T1 and MCF7 breast cancer cell lines. Methods: The PAMAMG4 dendrimer was treated with the gold anions and then, the mixture was chemically reduced by NaBH4. Prepared 197Au/PAMAMG4 was bombarded by thermal neutrons in the Tehran Research Reactor to 198Au/PAMAMG4 be produced. Prepared nanocomposites were characterized by means of FT-IR, 1H NMR, Zeta-potential measurements, TEM and EDX analyses. The radionuclidic purity of the 198Au/PAMAMG4 solution was determined using purity germanium (HPGe) spectroscopy and its stability in the presence of human serum was studied. In vitro studies were carried out to compare toxicity of PAMAMG4, 197Au/PAMAMG4 and 198Au/PAMAMG4 towards 4T1 and MCF7 cancerous cells and C2C12 normal cell lines. Results: Characterization results exhibited that invitro agents, 197Au/PAMAMG4 and 198Au/PAMAMG4, were synthesized successfully. Cells viability after 24 h, 48 h, and 72 h incubation, using MTT assay showed that the toxicity of 198Au/PAMAMG4 is significantly superior in comparison with 197Au/PAMAMG4 and PAMAMG4. Furthermore, the toxicity of 198Au/PAMAMG4 was higher on cancerous cells especially in higher level of concentrations after 72 hours (P<0.05). Conclusion: In the current study, the preparation of 197Au/PAMAMG4 and 198Au/PAMAMG4 is described and the cytotoxic properties of them against the MCF7, 4T1 cancerous cells and C2C12 normal cells were evaluated using MTT assay.

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