Background With this work the chemical structure of dextran-iron oxide thin films was reported. and 1.72 respectively for the films deposited from composite focuses on containing 5 wt.% maghemite. In the case of cells cultivated on dextran coated 5% maghemite -Fe2O3, the number of cells and the level of F-actin were lower Delamanid tyrosianse inhibitor compared to the other two types of thin films and control. Conclusions The dextran-iron oxide continuous thin films obtained by MAPLE technique from composite targets containing 10 wt.% dextran as well as 1 and 5 wt.% iron oxide nanoparticles synthesized by co-precipitation method presented granular surface morphology. Our data proved a good viability of Hep G2 cells grown on dextran coated maghemite thin films. Also, no changes in cells morphology were noticed under phase contrast microscopy. The data strongly suggest the potential use of iron oxide-dextran nanocomposites as a potential marker for biomedical applications. strong class=”kwd-title” Keywords: Iron oxide, Polysaccharides, MAPLE, Thin films, HepG2 cells Background Iron oxide nanoparticles and their composites have received increasing attention for their promising biomedical applications [1-7]. The materials is biocompatible and may be easily conjugated with bioactive substances highly. Lately, nanoscale iron oxide nanoparticles have already been used as light scattering brands and luminescent optical markers [1-3] for their potential applications as contrasting components for magnetic resonance imaging (MRI) [4-7], in vitro cell parting [8,9], targeted medication delivery [10], hyperthermia [11,12], etc. Nanophase composite components show physical and chemical substance Rabbit Polyclonal to Connexin 43 properties which change from mass components considerably. The size impact [13] and the top chemistry [14] perform a major part in the natural applications. To regulate the top properties of iron oxide nanoparticles, layer is applied having a biocompatible polymer during or following the synthesis procedure [15,16]. To conquer any potential threat of toxicity and high-level build up in the prospective body organ or cells, the iron oxide nanoparticles (IONPs) could be subjected to additional functionalization using bioactive substances [17]. Pulsed Laser beam Deposition (PLD) can be a well understand method for laser beam digesting of inorganic components structures and slim movies. This system has been few exclusions unsuitable for the immobilization of biomaterials nevertheless, like polymers, proteins and biopolymers [18,19]. UV laser beam – organic materials interactions can result in irreversible photochemical transformations from the moved materials. For these good reasons, the introduction of additional methods was required. Among these methods is named Matrix Assisted Pulsed Laser beam Evaporation (MAPLE). It offers a gentle system to transfer little Delamanid tyrosianse inhibitor and huge molecular weight varieties from condensed stage in to the vapor stage. In this system, the organic and/or nanomaterial are diluted inside a volatile noninteracting solvent, with focus of the few percent (in pounds), and freezing at water nitrogen temp. The frozen focus on is irradiated having a pulsed laser, whose energy is especially absorbed by the solvent and converted to thermal energy, allowing the solvent to vaporize and to be evacuated by the vacuum system. The solute material collects on a suitable substrate placed in front of target [20-22]. Since the laser energy is absorbed mainly by volatile solvent matrix, the photochemical decomposition of the organic material can be minimized or even eliminated. The evaporation process is defined by thermodynamic parameters of the volatile solvent and not by the organic material. The deposition is conducted at lower energy densities than in the case of conventional PLD, as with additional precaution to avoid thermal decomposition of organic materials. First investigations have shown that MAPLE technique offers the possibility to deposit complex materials without significant modifications in their chemical structure and their functional properties if laser parameters are adequately selected regarding the wavelength, fluence and pulse duration. The sort of solvent substrate pressure and temperature in the Delamanid tyrosianse inhibitor reaction chamber will also be important. With this paper, the biological and physico-chemical properties of polymer nanocomposites thin films containing IONPs inside a dextran matrix.