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Title of Journal: J Nanopart Res

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Abbravation: Journal of Nanoparticle Research

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Springer Netherlands

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DOI

10.1002/app.12133

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1572-896X

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Synthesis characterization and in vitro biologic

Authors: Dipsikha Bhattacharya Sumanta K Sahu Indranil Banerjee Manasmita Das Debashish Mishra Tapas K Maiti Panchanan Pramanik
Publish Date: 2011/04/17
Volume: 13, Issue: 9, Pages: 4173-
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Abstract

In this article we report the design and synthesis of a series of welldispersed superparamagnetic iron oxide nanoparticles SPIONs using chitosan as a surface modifying agent to develop a potential T 2 contrast probe for magnetic resonance imaging MRI The amine carboxyl hydroxyl and thiol functionalities were introduced on chitosancoated magnetic probe via simple reactions with small reactive organic molecules to afford a series of biofunctionalized nanoparticles Physicochemical characterizations of these functionalized nanoparticles were performed by TEM XRD DLS FTIR and VSM The colloidal stability of these functionalized iron oxide nanoparticles was investigated in presence of phosphate buffer saline high salt concentrations and different cell media for 1 week MRI analysis of human cervical carcinoma HeLa cell lines treated with nanoparticles elucidated that the aminefunctionalized nanoparticles exhibited higher amount of signal darkening and lower T 2 relaxation in comparison to the others The cellular internalization efficacy of these functionalized SPIONs was also investigated with HeLa cancer cell line by magnetically activated cell sorting MACS and fluorescence microscopy and results established selectively higher internalization efficacy of aminefunctionalized nanoparticles to cancer cells These positive attributes demonstrated that these nanoconjugates can be used as a promising platform for further in vitro and in vivo biological evaluations

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