alexa In Vitro Study for Comparing the Cytotoxicity of Silver and Gold Nanospheres on Raw 264.7 Murine Macrophage Cell Line
ISSN: 2155-9597

Journal of Bacteriology & Parasitology
Open Access

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Research Article

In Vitro Study for Comparing the Cytotoxicity of Silver and Gold Nanospheres on Raw 264.7 Murine Macrophage Cell Line

Hala Ragab Khalil Ali1*, Moawad MS2 and Selim SA3

1Department of Microbiology and Immunology, Animal Health Research Institute (AHRI), Dokki, Egypt

2Faculty of Veterinary Medicine, Department of Toxicology and Forensic Medicine, Giza, Egypt

3Faculty of Veterinary Medicine, Department of Microbiology and Immunology, Giza, Egypt

*Corresponding Author:
Ali HRK
Department of Microbiology and Immunology
Animal Health Research Institute (AHRI), Dokki, Egypt
Tel: +20 33374856
E-mail: [email protected]

Received Date: January 28, 2016 Accepted Date: February 27, 2016 Published Date: March 02, 2016

Citation: Ali HRK, Moawad MS, Selim SA (2016) In Vitro Study for Comparing the Cytotoxicity of Silver and Gold Nanospheres on Raw 264.7 Murine Macrophage Cell Line. J Bacteriol Parasitol 7:264. doi: 10.4172/2155-9597.1000264

Copyright: © 2016 Ali HRK, 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.

 

Abstract

Silver nanospheres (AgNSs) and gold nanospheres (AuNSs) made a huge commercial and scientific interests due to their antimicrobials potency, use in nanomedicine and drug delivery systems. Macrophages are the primary site for clearing waste substances from tissues and the intracellular infections produced by pathogens like Mycobacterium tuberculosis. Therefore, studying the cytotoxic effects of nanomaterials on such promising model will open new era towards safe use of nanobased treatments of intracellular pathogens. In This study, the effect of three different concentrations (10, 20, 40 μg/ml) of AuNSs and AgNSs with an average diameter of 20 nm was studied on RAW264.7 murine macrophage viability for 3 hours using XTT assay. AuNSs were found nontoxic to macrophages at all tested concentration. However AgNSs showed acute decline in viability of RAW264.7 cells even at the lowest concentration (10 μg/ml). In another experiment, the effect of AuNSs and AgNSs was examined on short and long term manners by treating macrophages with single dose of 20 μg/ml for different time points (0, 10, 20, 30, 60 minutes, 24, and 48 hours). Results revealed that AgNSs induced acute cytotoxicity to macrophages till 48 hours, while gold nanospheres were safe to RAW264.7 cells at all-time points compared to untreated control. Thus the AuNSs might represent a safe drug delivery platform for combating the intracellular pathogens like M. tuberculosis without hurting their host cells.

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