Bioinspired conductive and antibacterial hydrogel bionanocomposite based on tragacanth gum, polyaniline and osteoconductive SiO2 nanoparticles as a scaffold for bone tissue engineering application
4 affiliations
- 1Students Research Committee, Kermanshah University of Medical Sciences
- 2Medicinal Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences
- 3Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences
- 4Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences
Abstract
Tissue engineering (TE) has developed as an interdisciplinary field to replace, repair, or improving the function of failed or fractured bones. Hydrogels, due to their inherent biological and physicochemical features, have gained attention as scaffolds that support cell adhesion, proliferation, and differentiation. This study aimed to develop a novel hydrogel bionanocomposite for bone TE. Silica nanoparticles (SiO2 NPs) were synthesized via stober approach, and subsequently, modified with a silane coupling agent. Tragacanth gum/polyaniline (TG/PANI) composite was fabricated through chemical oxidation polymerization method, and then copolymerized with 2-hydroxyethyl methacrylate (HEMA) monomer and methacrylate-modified SiO2 NPs in the presence of a crosslinker to afford a TG/PANI-cl-PHEMA/SiO2 hydrogel bionanocomposite. Physicochemical properties, including swelling behavior, degradability, protein adsorption capacity, and in vitro drug release behavior were assessed along with biological tests such as, hemocompatibility, antibacterial activity, cytocompatibility and proliferation of MG-63 osteoblast-like cells via MTT-assay. The resulting scaffold exhibited a well-defined, and porous three dimensional (3D) structure with dispersed spherical SiO2 NPs. It demonstrated proper swelling ratio (371.5 ± 12.1%) and pH-dependent ciprofloxacin (Cip) release behavior. The developed scaffold showed higher cell viability value (139 ± 3.2%) than control groups (100 ± 3.5%) that confirmed cells proliferation potential of the scaffold at prolonged times. Finally, future studies should explore in vivo performance and long-term functionality of the scaffold.
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BibTeX
@article{khalaji2026bioinspired,
title = {{Bioinspired conductive and antibacterial hydrogel bionanocomposite based on tragacanth gum, polyaniline and osteoconductive SiO2 nanoparticles as a scaffold for bone tissue engineering application}},
author = {Ali Khalaji and Soheila Zare and Faranak Aghaz and Mehdi Jaymand and Hossein Derakhshankhah},
journal = {Scientific Reports},
year = {2026},
month = jul,
doi = {10.1038/s41598-026-62804-9},
url = {https://doi.org/10.1038/s41598-026-62804-9},
note = {CC BY},
}
RIS
TY - JOUR
TI - Bioinspired conductive and antibacterial hydrogel bionanocomposite based on tragacanth gum, polyaniline and osteoconductive SiO2 nanoparticles as a scaffold for bone tissue engineering application
AU - Ali Khalaji
AU - Soheila Zare
AU - Faranak Aghaz
AU - Mehdi Jaymand
AU - Hossein Derakhshankhah
PY - 2026
DA - 2026/07/01
JO - Scientific Reports
DO - 10.1038/s41598-026-62804-9
UR - https://doi.org/10.1038/s41598-026-62804-9
AB - Tissue engineering (TE) has developed as an interdisciplinary field to replace, repair, or improving the function of failed or fractured bones. Hydrogels, due to their inherent biological and physicochemical features, have gained attention as scaffolds that support cell adhesion, proliferation, and differentiation. This study aimed to develop a novel hydrogel bionanocomposite for bone TE. Silica nanoparticles (SiO2 NPs) were synthesized via stober approach, and subsequently, modified with a silane coupling agent. Tragacanth gum/polyaniline (TG/PANI) composite was fabricated through chemical oxidation polymerization method, and then copolymerized with 2-hydroxyethyl methacrylate (HEMA) monomer and methacrylate-modified SiO2 NPs in the presence of a crosslinker to afford a TG/PANI-cl-PHEMA/SiO2 hydrogel bionanocomposite. Physicochemical properties, including swelling behavior, degradability, protein adsorption capacity, and in vitro drug release behavior were assessed along with biological tests such as, hemocompatibility, antibacterial activity, cytocompatibility and proliferation of MG-63 osteoblast-like cells via MTT-assay. The resulting scaffold exhibited a well-defined, and porous three dimensional (3D) structure with dispersed spherical SiO2 NPs. It demonstrated proper swelling ratio (371.5 ± 12.1%) and pH-dependent ciprofloxacin (Cip) release behavior. The developed scaffold showed higher cell viability value (139 ± 3.2%) than control groups (100 ± 3.5%) that confirmed cells proliferation potential of the scaffold at prolonged times. Finally, future studies should explore in vivo performance and long-term functionality of the scaffold.
SN - 2045-2322
ER -