Fabrication of Hemin-Doped Serum Albumin-Based Fibrous Scaffolds for Neural Tissue Engineering Applications
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Author(s)
Hsu, Chia-Chu
Serio, Andrea
Amdursky, N
Besnard, Cyril
Stevens, MM
Type
Journal Article
Abstract
Neural tissue engineering (TE) represents a promising new avenue of therapy to support nerve recovery and regeneration. To recreate the complex environment in which neurons develop and mature, the ideal biomaterials for neural TE require a number of properties and capabilities including the appropriate biochemical and physical cues to adsorb and release specific growth factors. Here, we present neural TE constructs based on electrospun serum albumin (SA) fibrous scaffolds. We doped our SA scaffolds with an iron-containing porphyrin, hemin, to confer conductivity, and then functionalized them with different recombinant proteins and growth factors to ensure cell attachment and proliferation. We demonstrated the potential for these constructs combining topographical, biochemical, and electrical stimuli by testing them with clinically relevant neural populations derived from human induced pluripotent stem cells (hiPSCs). Our scaffolds could support the attachment, proliferation, and neuronal differentiation of hiPSC-derived neural stem cells (NSCs), and were also able to incorporate active growth factors and release them over time, which modified the behavior of cultured cells and substituted the need for growth factor supplementation by media change. Electrical stimulation on the doped SA scaffold positively influenced the maturation of neuronal populations, with neurons exhibiting more branched neurites compared to controls. Through promotion of cell proliferation, differentiation, and neurite branching of hiPSC-derived NSCs, these conductive SA fibrous scaffolds are of broad application in nerve regeneration strategies.
Date Issued
2018-01-30
Date Acceptance
2018-01-13
Citation
ACS Applied Materials and Interfaces, 2018, 10 (6), pp.5305-5317
ISSN
1944-8244
Publisher
American Chemical Society
Start Page
5305
End Page
5317
Journal / Book Title
ACS Applied Materials and Interfaces
Volume
10
Issue
6
Copyright Statement
This is an open access article published under a Creative Commons Attribution (CC-BY)
License, which permits unrestricted use, distribution and reproduction in any medium,
provided the author and source are cited.
License, which permits unrestricted use, distribution and reproduction in any medium,
provided the author and source are cited.
License URL
Sponsor
Medical Research Council (MRC)
Medical Research Council (MRC)
Wellcome Trust
Commission of the European Communities
Commission of the European Communities
Grant Number
MR/K026666/1
MR/L012677/1
098411/Z/12/Z
ERC-2013-CoG-616417
PIEF-GA-2013-623123
Subjects
electrical stimulation
electrospinning
hemin
neural stem cells
neural tissue engineering
serum albumin
0904 Chemical Engineering
0303 Macromolecular And Materials Chemistry
0306 Physical Chemistry (Incl. Structural)
Nanoscience & Nanotechnology
Publication Status
Published