Journal
JOURNAL OF CONTROLLED RELEASE
Volume 150, Issue 2, Pages 157-163Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jconrel.2010.11.025
Keywords
Heparin; Delivery vehicle; Growth factors; Self assembly; Controlled release
Funding
- NSF [DMR-1005766]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1005766] Funding Source: National Science Foundation
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Growth factors are potent molecules that regulate cell functions including survival, self renewal, differentiation and proliferation. High-efficacy delivery of growth factors will be a powerful tool for regenerative medicine. Decades of intense research have significantly advanced the field of controlled delivery. There is, however, still a great unmet need for new methods that can improve overall efficacy of growth factor delivery. Here, we report a new growth factor delivery vehicle formed by self assembly of heparin and a biocompatible polycation, poly(ethylene argininylaspartate diglyceride) (PEAD). Of the many heparin-binding growth factors, we chose FGF-2 and NGF to demonstrate the potential of the [PEAD:heparin] delivery vehicle. The delivery vehicle incorporates both growth factors with high efficiency, controls their release, maintains the bioactivity of FGF-2 and increases the bioactivity of NGF relative to bolus delivery. [PEAD:heparin] appears to be a promising delivery matrix for many heparin-binding growth factors and may lead to efficient growth factor delivery for a variety of diseases and disabilities. (C) 2010 Elsevier B.V. All rights reserved.
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