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Title: Evaluating osteogenic effects associated with the incorporation of ascorbic acid in mineralized collagen scaffolds
Abstract

Current treatments for craniomaxillofacial (CMF) defects motivate the design of instructive biomaterials that can promote osteogenic healing of complex bone defects. We report methods to promote in vitro osteogenesis of human mesenchymal stem cells (hMSCs) within a model mineralized collagen scaffold via the incorporation of ascorbic acid (vitamin C), a key factor in collagen biosynthesis and bone mineralization. An addition of 5 w/v% ascorbic acid into the base mineralized collagen scaffold significantly changes key morphology characteristics including porosity, macrostructure, and microstructure. This modification promotes hMSC metabolic activity, ALP activity, and hMSC‐mediated deposition of calcium and phosphorous. Additionally, the incorporation of ascorbic acid influences osteogenic gene expression (BMP‐2,RUNX2,COL1A2) and delays the expression of genes associated with osteoclast activity and bone resorption (OPN,CTSK), though it reduces the secretion of OPG. Together, these findings highlight ascorbic acid as a relevant component for mineralized collagen scaffold design to promote osteogenic differentiation and new bone formation for improved CMF outcomes.

 
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NSF-PAR ID:
10470013
Author(s) / Creator(s):
 ;  ;  ;  ;  
Publisher / Repository:
Wiley Blackwell (John Wiley & Sons)
Date Published:
Journal Name:
Journal of Biomedical Materials Research Part A
Volume:
112
Issue:
3
ISSN:
1549-3296
Format(s):
Medium: X Size: p. 336-347
Size(s):
p. 336-347
Sponsoring Org:
National Science Foundation
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