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Polyelectrolyte Complex for Heparin Binding Domain Osteogenic Growth Factor Delivery
Published on: August 22, 2016
A heparin-mimicking polymer conjugate stabilizes basic fibroblast growth factor.
Thi H Nguyen1, Sung-Hye Kim, Caitlin G Decker
1Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E Young Drive East, Los Angeles, California 90095, USA.
Nature Chemistry
|February 21, 2013
Summary
Stabilizing basic fibroblast growth factor (bFGF) with a heparin-mimicking polymer enhances its stability against various stressors. This bFGF conjugate retains bioactivity, improving its potential for therapeutic applications.
Area of Science:
- Biochemistry
- Polymer Science
- Regenerative Medicine
Background:
- Basic fibroblast growth factor (bFGF) is vital for wound healing and bone regeneration.
- Native bFGF exhibits instability, limiting its clinical use.
- Heparin-binding growth factors require stabilization for therapeutic delivery.
Purpose of the Study:
- To develop a stabilized form of bFGF.
- To enhance bFGF stability against environmental and therapeutic stressors.
- To investigate the bioactivity and stability of a bFGF-polymer conjugate.
Main Methods:
- Covalent conjugation of bFGF with a heparin-mimicking polymer.
- The polymer is a copolymer of styrene sulfonate and methyl methacrylate with poly(ethylene glycol) side chains.
- Testing stability against heat, acidic conditions, storage, and proteolytic degradation.
Main Results:
- The bFGF-polymer conjugate demonstrated enhanced stability against various stressors compared to native bFGF.
- The conjugate retained bioactivity after synthesis and stress exposure.
- A control conjugate lacking styrene sulfonate units showed reduced activity.
Conclusions:
- Covalent conjugation with a heparin-mimicking polymer effectively stabilizes bFGF.
- This stabilization strategy preserves bFGF bioactivity.
- The findings have significant implications for the clinical application of bFGF and other heparin-binding growth factors.
