Sequential Release of BMP-7 and VEGF from the PLGA/AK-Gelatin Composite Scaffolds

No Thumbnail Available
File version
Author(s)
Liu, G
Fan, W
Miao, X
Xiao, Y
Good, D
Wei, MQ
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
2011
Size
File type(s)
Location
License
Abstract

Vascular endothelial growth factor (VEGF) and bone morphogenetic proteins (BMP-7) are key regulators of angiogenesis and osteogenesis during bone regeneration. The aim of this study was to investigate the possibility of realizing sequential release of the two growth factors using a novel composite scaffold. Poly(lactic-co-glycolic acid) (PLGA)-Akermanite (AK) microspheres were used to make the composite scaffold, which was then loaded with BMP-7, followed by embedding in a gelatin hydrogel matrix loaded with VEGF. The release profiles of the growth factors were studied and selected osteogenic related markers of bone marrow stromal cells (BMSCs) were analysed. It was shown that the composite scaffolds exhibited a fast initial burst release of VEGF within the first 3 days and a sustained slow release of BMP-7 over the full period of 20 days. The in vitro proliferation and differentiation of the BMSCs cultured in the osteogenic medium were enhanced by 1 to 2 times, resulting from the additionally and sequentially release of growth factors from the PLGA-AK/gelatin composite scaffolds.

Journal Title

Journal of Biomimetics, Biomaterials, and Tissue Engineering

Conference Title
Book Title
Edition
Volume

11

Issue

81

Thesis Type
Degree Program
School
Publisher link
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
Item Access Status
Note
Access the data
Related item(s)
Subject

Biological sciences

Engineering

Biomedical and clinical sciences

Oncology and carcinogenesis not elsewhere classified

Biomedical engineering

Persistent link to this record
Citation
Collections