Bone tissue engineering using bone marrow stromal cells and an injectable sodium alginate/gelatin scaffold.
To investigate the potential application of bone marrow stromal cells (BMSCs) and an injectable sodium alginate/gelatin scaffold for bone tissue engineering (BTE). The phenotype of osteogenic BMSCs was examined by mineralized nodules formation and type I collagen expression. Cell proliferation was evaluated by MTT assay. The biocompatibility of scaffold and osteogenic cells were examined by hematoxylin and eosin (H&E) staining. Ectopic bone formation as well as closure of rabbit calvarial critical-sized defects following scaffold-cell implantation were analyzed by histological examination and computed tomography (CT) scanning. Spindle-shaped osteogenic cells of high purity were derived from BMSCs. The osteogenic cells and sodium alginate/gelatin (2:3) scaffold presented fine biocompatibility following cross-linking with 0.6% of CaCl(2). After implantation, the scaffold-cell construct promoted both ectopic bone formation and bone healing in the rabbit calvarial critical-sized defect model. Our data demonstrated that the sodium alginate/gelatin scaffold could be a suitable biomaterial for bone engineering, and the scaffold-osteogenic cells construct is a promising alternative approach for the bone healing process.
Beijing Shijitan Hospital, Beijing 100038, China.
Yang
Y
Xia
Fang
F
Mei
Yongli
Y
Duan
Ying
Y
Gao
Zhuo
Z
Xiong
Ting
T
Zhang
Hongquan
H
Zhang
D000464:Alginates / Q000737:chemistry*; D000818:Animals; D001854:Bone Marrow Cells / Q000166:cytology*; D001842:Bone and Bones; D005780:Gelatin / Q000737:chemistry*; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D011817:Rabbits; D017154:Stromal Cells / Q000166:cytology*; D023822:Tissue Engineering
D000464:Alginates; D006603:Hexuronic Acids; D020723:Glucuronic Acid; D005780:Gelatin