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  4. Modular and versatile spatial functionalization of tissue engineering scaffolds through fiber-initiated controlled radical polymerization
 
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Modular and versatile spatial functionalization of tissue engineering scaffolds through fiber-initiated controlled radical polymerization
File(s)
Harrison_et_al-2015-Advanced_Functional_Materials.pdf (1.41 MB)
Published version
Author(s)
Harrison, RH
Steele, JAM
Chapman, R
Gormley, A
Chow, L
more
Type
Journal Article
Abstract
Native tissues are typically heterogeneous and hierarchically organized, and generating scaffolds that can mimic these properties is critical for tissue engineering applications. By uniquely combining controlled radical polymerization (CRP), end‐functionalization of polymers, and advanced electrospinning techniques, a modular and versatile approach is introduced to generate scaffolds with spatially organized functionality. Poly‐ε‐caprolactone is end functionalized with either a polymerization‐initiating group or a cell‐binding peptide motif cyclic Arg‐Gly‐Asp‐Ser (cRGDS), and are each sequentially electrospun to produce zonally discrete bilayers within a continuous fiber scaffold. The polymerization‐initiating group is then used to graft an antifouling polymer bottlebrush based on poly(ethylene glycol) from the fiber surface using CRP exclusively within one bilayer of the scaffold. The ability to include additional multifunctionality during CRP is showcased by integrating a biotinylated monomer unit into the polymerization step allowing postmodification of the scaffold with streptavidin‐coupled moieties. These combined processing techniques result in an effective bilayered and dual‐functionality scaffold with a cell‐adhesive surface and an opposing antifouling non‐cell‐adhesive surface in zonally specific regions across the thickness of the scaffold, demonstrated through fluorescent labelling and cell adhesion studies. This modular and versatile approach combines strategies to produce scaffolds with tailorable properties for many applications in tissue engineering and regenerative medicine.
Date Issued
2015-09-23
Date Acceptance
2015-07-21
Citation
Advanced Functional Materials, 2015, 25 (36), pp.5748-5757
URI
http://hdl.handle.net/10044/1/26390
URL
https://onlinelibrary.wiley.com/doi/10.1002/adfm.201501277
DOI
https://www.dx.doi.org/10.1002/adfm.201501277
ISSN
1616-301X
Publisher
Wiley
Start Page
5748
End Page
5757
Journal / Book Title
Advanced Functional Materials
Volume
25
Issue
36
Copyright Statement
© 2015 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
License URL
http://creativecommons.org/licenses/by/4.0/
Sponsor
Wellcome Trust
Engineering & Physical Science Research Council (EPSRC)
The Royal Society
Identifier
https://onlinelibrary.wiley.com/doi/10.1002/adfm.201501277
Grant Number
088844/Z/09/Z
N/A
UF100105
Subjects
Science & Technology
Physical Sciences
Technology
Chemistry, Multidisciplinary
Chemistry, Physical
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Physics, Applied
Physics, Condensed Matter
Chemistry
Science & Technology - Other Topics
Materials Science
Physics
CARTILAGE REGENERATION
AGET ATRP
SURFACE
NANOFIBERS
MEMBRANES
METHACRYLATE)
ANTIADHESION
BIOMOLECULES
POLYMERS
BILAYER
antifouling
bilayered materials
controlled polymerization
electrospinning
polymer bottlebrushes
02 Physical Sciences
03 Chemical Sciences
09 Engineering
Materials
Publication Status
Published
Date Publish Online
2015-08-17
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