Details
| Original language | English |
|---|---|
| Pages (from-to) | 600-614 |
| Number of pages | 15 |
| Journal | Journal of Biomedical Materials Research - Part A |
| Volume | 109 |
| Issue number | 5 |
| Early online date | 30 Jun 2020 |
| Publication status | Published - 1 May 2021 |
Abstract
Polycaprolactone (PCL) fiber mats with different surface modifications were functionalized with a chitosan nanogel coating to attach the growth factor human bone morphogenetic protein 2 (BMP-2). Three different hydrophilic surface modifications were compared with regard to the binding and in vitro release of BMP-2. The type of surface modification and the specific surface area derived from the fiber thickness had an important influence on the degree of protein loading. Coating the PCL fibers with polydopamine resulted in the binding of the largest BMP-2 quantity per surface area. However, most of the binding was irreversible over the investigated period of time, causing a low release in vitro. PCL fiber mats with a chitosan-graft-PCL coating and an additional alginate layer, as well as PCL fiber mats with an air plasma surface modification boundless BMP-2, but the immobilized protein could almost completely be released. With polydopamine and plasma modifications as well as with unmodified PCL, high amounts of BMP-2 could also be attached directly to the surface. Integration of BMP-2 into the chitosan nanogel functionalization considerably increased binding on all hydrophilized surfaces and resulted in a sustained release with an initial burst release of BMP-2 without detectable loss of bioactivity in vitro.
Keywords
- BMP-2, chitosan coating, growth factor delivery, PCL fiber scaffold, surface modification
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
- Materials Science(all)
- Biomaterials
- Engineering(all)
- Biomedical Engineering
- Materials Science(all)
- Metals and Alloys
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In: Journal of Biomedical Materials Research - Part A, Vol. 109, No. 5, 01.05.2021, p. 600-614.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Varying the sustained release of BMP-2 from chitosan nanogel-functionalized polycaprolactone fiber mats by different polycaprolactone surface modifications
AU - Sundermann, Julius
AU - Oehmichen, Sarah
AU - Sydow, Steffen
AU - Burmeister, Laura
AU - Quaas, Bastian
AU - Hänsch, Robert
AU - Rinas, Ursula
AU - Hoffmann, Andrea
AU - Menzel, Henning
AU - Bunjes, Heike
N1 - Funding Information: We thank the Deutsche Forschungsgemeinschaft for funding within the research unit “Gradierte Implantate” (FOR 2180), the Ministry of Science and Culture (MWK) of Lower Saxony, Germany, for the financial support within the Smart BioTecs alliance, Alexander Becker and colleagues at the Institute for Multiphase Processes, Leibniz Universität Hannover, for the supply of electrospun batch fiber mats and Stefanie Dirksen‐Thedens for her experimental support.
PY - 2021/5/1
Y1 - 2021/5/1
N2 - Polycaprolactone (PCL) fiber mats with different surface modifications were functionalized with a chitosan nanogel coating to attach the growth factor human bone morphogenetic protein 2 (BMP-2). Three different hydrophilic surface modifications were compared with regard to the binding and in vitro release of BMP-2. The type of surface modification and the specific surface area derived from the fiber thickness had an important influence on the degree of protein loading. Coating the PCL fibers with polydopamine resulted in the binding of the largest BMP-2 quantity per surface area. However, most of the binding was irreversible over the investigated period of time, causing a low release in vitro. PCL fiber mats with a chitosan-graft-PCL coating and an additional alginate layer, as well as PCL fiber mats with an air plasma surface modification boundless BMP-2, but the immobilized protein could almost completely be released. With polydopamine and plasma modifications as well as with unmodified PCL, high amounts of BMP-2 could also be attached directly to the surface. Integration of BMP-2 into the chitosan nanogel functionalization considerably increased binding on all hydrophilized surfaces and resulted in a sustained release with an initial burst release of BMP-2 without detectable loss of bioactivity in vitro.
AB - Polycaprolactone (PCL) fiber mats with different surface modifications were functionalized with a chitosan nanogel coating to attach the growth factor human bone morphogenetic protein 2 (BMP-2). Three different hydrophilic surface modifications were compared with regard to the binding and in vitro release of BMP-2. The type of surface modification and the specific surface area derived from the fiber thickness had an important influence on the degree of protein loading. Coating the PCL fibers with polydopamine resulted in the binding of the largest BMP-2 quantity per surface area. However, most of the binding was irreversible over the investigated period of time, causing a low release in vitro. PCL fiber mats with a chitosan-graft-PCL coating and an additional alginate layer, as well as PCL fiber mats with an air plasma surface modification boundless BMP-2, but the immobilized protein could almost completely be released. With polydopamine and plasma modifications as well as with unmodified PCL, high amounts of BMP-2 could also be attached directly to the surface. Integration of BMP-2 into the chitosan nanogel functionalization considerably increased binding on all hydrophilized surfaces and resulted in a sustained release with an initial burst release of BMP-2 without detectable loss of bioactivity in vitro.
KW - BMP-2
KW - chitosan coating
KW - growth factor delivery
KW - PCL fiber scaffold
KW - surface modification
UR - http://www.scopus.com/inward/record.url?scp=85087782238&partnerID=8YFLogxK
U2 - 10.1002/jbm.a.37045
DO - 10.1002/jbm.a.37045
M3 - Article
C2 - 32608183
AN - SCOPUS:85087782238
VL - 109
SP - 600
EP - 614
JO - Journal of Biomedical Materials Research - Part A
JF - Journal of Biomedical Materials Research - Part A
SN - 1549-3296
IS - 5
ER -