Journal
CARBOHYDRATE POLYMERS
Volume 273, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2021.118589
Keywords
Chitosan hydrogel; Bone tissue engineering; Growth factor; Bone scaffold
Categories
Funding
- Shahid Beheshti University Research Council
- Tabriz University of Medical Sciences [59337]
- Dental and Periodontal Research Center [59337]
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Injectable hydrogels loaded with VEGF and BMP-2 promote proliferation and osteogenic differentiation of DPSCs, showing potential for bone defect treatment.
Nowadays, vascularization and mineralization of bone defects is the main bottleneck in the bone regeneration field that is needed to be overcome and developed. Here, we prepared novel in-situ formed injectable hydrogels based on chitosan biguanidine and carboxymethylcellulose loaded with vascular endothelial growth factor (VEGF) and recombinant Bone morphogenetic protein 2 (BMP-2) and studied its influence on osteoblastic differentiation of dental pulp stem cells (DPSCs). The sequential release behavior of the VEGF and BMP-2 from hydrogels adjusted with the pattern of normal human bone growth. MTT assay exhibited that these hydrogels were non-toxic and significantly increased DPSCs proliferation. The Real-time PCR and Western blot analysis on CG11/BMP2-VEGF showed significantly higher gene and protein expression of ALP, COL1 alpha 1, and OCN. These results were confirmed by mineralization assay by Alizarin Red staining and Alkaline phosphatase enzyme activity. Based on these evaluations, these hydrogel holds potential as an injectable bone tissue engineering platform.
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