Abstract
The most important role of tissue engineering is to develop a biomaterial with a property that mimics the extracellular matrix (ECM) by enhancing the lineage-specific proliferation and differentiation with favorable regeneration property to aid in new tissue formation. Thus, to develop an ideal scaffold for bone repair, we have fabricated a composite nanofiber by the coaxial electrospinning technique. The coaxial electrospun nanofiber contains the core layer, consisting of polyvinyl alcohol (PVA) blended with oregano extract and mesoporous silica nanoparticles (PVA-OE-MSNPs), and the shell layer, consisting of poly-ε-caprolactone blended with collagen and hydroxyapatite (PCL-collagen-HAP). We evaluated the physicochemical properties of the nanofibers using X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). In vitro biocompatibility, cell adhesion, cell viability, and osteogenic potential were evaluated by 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenlytetrazolium bromide (MTT), calcein AM, and alkaline phosphatase (ALP) activity and Alizarin Red staining in NIH 3T3/MG-63 cells. The results showed that the nanoparticle-incorporated coaxial nanofiber was observed with bead-free, continuous, and uniform fiber morphology with a mean diameter in the range of 310 ± 125 nm. From the biochemical studies, it is observed that the incorporation of nanofiber with HAP and MSNPs shows good swelling property with ideal porosity, biodegradation, and enhanced biomineralization property. In vitro results showed that the scaffolds with nanoparticles have higher cell adhesion, cell viability, ALP activity, and mineralization potential. Thus, the fabricated nanofiber could be an appropriate implantable biomaterial for bone tissue engineering.
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Acknowledgements
The authors thank the Director, CSIR-CLRI, for providing support to conduct this experiment and publish the article (CSIR-CLRI communication No. 1489). The authors also acknowledge and thank the support rendered by CLRI-CATERS (Centre for Analysis, Testing, Evaluation and Reporting Services) by providing the infrastructure facilities to carry out the research work.
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This study received support from the CSIR-CLRI–funded project (MLP-03).
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S.P.: Contributed to conceptualization, hypothesis, study design, experimentation, data interpretation, and manuscript preparation.
M.S.: Performed the material preparation and assisted in vitro studies.
A.K.P.: Contributed to the study design, analysis of the data, and material characterization.
S.K.A.S.: Contributed to the study design, data interpretation, and review of the final manuscript.
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Pathmanapan, S., Sekar, M., Pandurangan, A.K. et al. Fabrication of Mesoporous Silica Nanoparticle–Incorporated Coaxial Nanofiber for Evaluating the In Vitro Osteogenic Potential. Appl Biochem Biotechnol 194, 302–322 (2022). https://doi.org/10.1007/s12010-021-03741-3
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DOI: https://doi.org/10.1007/s12010-021-03741-3