synthesizing and characterization of magnetic mesoporous silica...

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8 Synthesizing and characterization of magnetic Mesoporous silica nanocomposite for medical application and investigating their cytotoxicity Foroogh Toubi 1 , Ayyoob Arpanaei 2 , Abdolkhalegh Deezaji 3 , Mohammad Ali Oghabian 4 , Seyed Safa-Ali Fatemi 2 1 PhD Student, Department of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran 2 Assistant Professor, Department of Environmental and Industrial Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran 3 Assistant Professor, Department of Molecular Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran 4 Associate Professor, Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran (Received January 12, 2014; Accepted April 20, 2014) Abstract Background and purpose: One of the most important challenges in nanomedicine is timely diagnosis and effective treatment of chronic disease. The aim of this research was to synthesize and characterize 3-layered magnetic silica nanocomposite with simultaneous application as a contrast agent in magnetic resonance imaging (MRI) and for drug delivery. Materials and methods: In this research, magnetite iron oxide nanoparticles by co-precipitation method, first layer of silica by a method similar to Stober method and second layer (mesoporous silica) by removing template method were produced. Existence or deletion of surfactant molecules by Fourier Transform Infrared (FTIR) spectroscopy, particle size and morphology of particles by high resolution scanning transmission electron microscopy (HR-STEM), magnetic properties of particles by vibrating sample magnetometer (VSM) instrument, mesoporous structure by Brunauer-Emmett-Teller (BET) method and also crystalline structure of nanocomposite by X-Ray diffraction (XRD) method were investigated. Diphenyltetrazolium bromide (MTT) and lactate dehydrogenase (LDH) assays were used to study cytotoxicity of the produced particles. Results: Produced 3-layered nanocomposite had the size of 180 ± 10 nm, specific area and average pore diameter of 390.4m2/gand 3.01 nm, respectively. The saturation magnetization value of nanocomposite was 21 ± 0.5 emu/g. Cell cytotoxicity of nanocomposite with human prostate carcinoma epithelial-like cell line Du-145 and erythroleukemia cells K562 were reviewed. The results revealed that synthesized nanocomposite enhanced no cytotoxicity in tested concentrations. Conclusion: The result of present study illustrated that produced nanocomposite has preliminary essential capability to be used as MR imaging agent and drug delivery system. Keywords: Magnetite nanoparticle, mesoporous silica, nanocomposite J Mazand Univ Med Sci 2014; 24(112): 9-22 (Persian). Downloaded from jmums.mazums.ac.ir at 3:44 +0330 on Sunday March 15th 2020

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Page 1: Synthesizing and characterization of magnetic Mesoporous silica …jmums.mazums.ac.ir/article-1-3139-en.pdf · 8 Synthesizing and characterization of magnetic Mesop orous silica nanocomposite

8

Synthesizing and characterization of magnetic Mesoporous silica nanocomposite for medical application and

investigating their cytotoxicity

Foroogh Toubi1,

Ayyoob Arpanaei2,

Abdolkhalegh Deezaji3,

Mohammad Ali Oghabian4,

Seyed Safa-Ali Fatemi2

1 PhD Student, Department of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran

2 Assistant Professor, Department of Environmental and Industrial Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran

3 Assistant Professor, Department of Molecular Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran 4 Associate Professor, Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran

(Received January 12, 2014; Accepted April 20, 2014)

Abstract

Background and purpose: One of the most important challenges in nanomedicine is timely diagnosis and

effective treatment of chronic disease. The aim of this research was to synthesize and characterize 3-layered

magnetic silica nanocomposite with simultaneous application as a contrast agent in magnetic resonance imaging

(MRI) and for drug delivery.

Materials and methods: In this research, magnetite iron oxide nanoparticles by co-precipitation method,

first layer of silica by a method similar to Stober method and second layer (mesoporous silica) by removing template

method were produced. Existence or deletion of surfactant molecules by Fourier Transform Infrared (FTIR)

spectroscopy, particle size and morphology of particles by high resolution scanning transmission electron

microscopy (HR-STEM), magnetic properties of particles by vibrating sample magnetometer (VSM) instrument,

mesoporous structure by Brunauer-Emmett-Teller (BET) method and also crystalline structure of nanocomposite by

X-Ray diffraction (XRD) method were investigated. Diphenyltetrazolium bromide (MTT) and lactate dehydrogenase

(LDH) assays were used to study cytotoxicity of the produced particles.

Results: Produced 3-layered nanocomposite had the size of 180 ± 10 nm, specific area and average pore

diameter of 390.4m2/gand 3.01 nm, respectively. The saturation magnetization value of nanocomposite was 21 ± 0.5

emu/g. Cell cytotoxicity of nanocomposite with human prostate carcinoma epithelial-like cell line Du-145 and

erythroleukemia cells K562 were reviewed. The results revealed that synthesized nanocomposite enhanced no

cytotoxicity in tested concentrations.

Conclusion: The result of present study illustrated that produced nanocomposite has preliminary essential

capability to be used as MR imaging agent and drug delivery system.

Keywords: Magnetite nanoparticle, mesoporous silica, nanocomposite J Mazand Univ Med Sci 2014; 24(112): 9-22 (Persian).

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