Collagen scaffolds loaded with collagen-binding NGF-beta accelerate ulcer healing.

Abstract

Studies have shown that exogenous nerve growth factor (NGF) accelerates ulcer healing, but the inefficient growth factor delivery system limits its clinical application. In this report, we found that the native human NGF-beta fused with a collagen-binding domain (CBD) could form a collagen-based NGF targeting delivery system, and the CBD-fused NGF-beta could bind to collagen membranes efficiently. Using the rabbit dermal ischemic ulcer model, we have found that this targeting delivery system maintains a higher concentration and stronger bioactivity of NGF-beta on the collagen membranes by promoting peripheral nerve growth. Furthermore, it enhances the rate of ulcer healing through accelerating the re-epithelialization of dermal ulcer wounds and the formation of capillary lumens within the newly formed tissue area. Thus, collagen membranes loaded with collagen-targeting human NGF-beta accelerate ulcer healing efficiently.

• Authors: Wenjie Sun, Hang Lin, Bing Chen, Wenxue Zhao, Yannan Zhao, Zhifeng Xiao, Jianwu Dai
• Journal: Journal of biomedical materials research. Part A (J Biomed Mater Res A) Vol. 92 Issue 3 Pg. 887-95 (Mar 01 2010) ISSN: 1552-4965 [Electronic] United States
• PMID: 19283824 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: (c) 2009 Wiley Periodicals, Inc.

Chemical References

• Collagen
• Nerve Growth Factor

Topics

• Animals
• Collagen (metabolism)
• Enzyme-Linked Immunosorbent Assay
• Immunohistochemistry
• Microscopy, Electron, Scanning
• Nerve Growth Factor (metabolism)
• Protein Binding
• Rabbits
• Skin Ulcer (metabolism)
• Wound Healing