Abstract
Biocomposite materials, composed of biodegradable polymers and supplements, are promising for bone regenerative matrices due to their mechanical strength and excellent osteoconductivity. This study focuses on fabricating electrospun composite scaffolds using the bark extract of Butea monosperma (BM), nano strontium hydroxyapatite (nSrHA), and polycaprolactone (PCL). Four types of scaffolds were prepared: PCL (control), BM-PCL, nSrHA-PCL, and BM-nSrHA-PCL. The scaffolds were evaluated through various techniques: bright field microscopy for standardization, SEM for structural evaluation, and SEM-EDX for elemental analysis. Additionally, mechanical strength, release study, degradation, and protein adsorption were assessed. Furthermore, cytotoxicity, proliferation, and cytocompatibility of the scaffolds were evaluated using rat adipose-derived mesenchymal stem cells (rADMSCs) through SEM, MTT assay, LDH assay, DAPI staining, and Direct contact assay. SEM analysis confirmed that all four fabricated scaffolds were nano-fibrous in nature. The incorporation of phytochemicals and nSrHA was confirmed via SEM-EDX. Mechanical testing revealed that the BM-nSrHA-PCL scaffolds had superior mechanical properties compared to the control PCL scaffolds. Protein adsorption studies indicated enhanced protein binding in BM-nSrHA-PCL scaffolds. Degradation studies showed that BM-nSrHA-PCL scaffolds had a controlled degradation rate suitable for tissue engineering applications. Cytotoxicity tests confirmed that all scaffolds were noncytotoxic. Proliferation and cytocompatibility assays demonstrated that BM-nSrHA-PCL scaffolds significantly promoted cell proliferation compared to other scaffold types. These results suggest that the BM-nSrHA-PCL scaffolds exhibit improved mechanical properties, protein adsorption, controlled degradation, and enhanced cell proliferation, making them promising candidates for bone tissue engineering applications.
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