1. Biopolymeric hydrogels - nanostructured TiO 2 hybrid materials as potential injectable scaffolds for bone regeneration.
- Author
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Zazakowny K, Lewandowska-Łańcucka J, Mastalska-Popławska J, Kamiński K, Kusior A, Radecka M, and Nowakowska M
- Subjects
- Animals, Biocompatible Materials administration & dosage, Biocompatible Materials chemistry, Bone Regeneration drug effects, Cell Line, Tumor, Cell Survival drug effects, Cells, Cultured, Chitosan chemistry, Collagen chemistry, Embryo, Mammalian cytology, Fibroblasts cytology, Fibroblasts drug effects, Humans, Hydrophobic and Hydrophilic Interactions, Injections, Mechanical Phenomena, Mice, Microscopy, Electron, Scanning, Nanostructures administration & dosage, Nanostructures ultrastructure, Tissue Engineering methods, Biopolymers chemistry, Hydrogels chemistry, Nanostructures chemistry, Tissue Scaffolds chemistry, Titanium chemistry
- Abstract
The present work aims at development of novel hybrid materials from genipin crosslinked collagen or collagen/chitosan hydrogels containing various types of TiO
2 nanoparticles characterized with different anatase/rutile ratios. Collagen and chitosan were selected as hydrogel components since they are biopolymers being, like collagen, the major compound present in extracellular matrix or exhibit structural similarity to glycosaminoglycans, like chitosan. TiO2 nanoparticles were introduced to the hydrogel matrices to improve their mechanical properties as well as bioactivity. A series of twelve novel hybrid materials were prepared and their physicochemical, mechanical and biological properties were evaluated. It was found that TiO2 nanostructures introduced to the hydrogels have significant influence on the swelling properties of the synthesized hybrids and their impact is strongly dependent on the type of matrices. The surfaces of hybrid materials were found to be more hydrophilic than these of corresponding hydrogel matrix. It was also observed that, the storage modulus values of the hybrids based on collagen-chitosan hydrogel are comparable to these for plain hydrogels what indicates that the mechanical properties of the materials obtained are satisfactory for possible biomedical application. The in vitro cell culture studies have shown that prepared materials are biocompatible as they can support mitochondrial activity of MEFs as well as MG-63 cells. In vitro experiments performed under simulated body fluid (SBF) conditions have revealed that all studied TiO2 nanoparticles present in hydrogel matrices, regardless of anatase/rutile ratio, successfully induced formation of apatite-like structures. The hybrid materials developed here are promising candidates for preparation of bioactive, injectable scaffolds for tissue engineering., (Copyright © 2016 Elsevier B.V. All rights reserved.)- Published
- 2016
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