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The use of superporous Ac-CGGASIKVAVS-OH-modified PHEMA scaffolds to promote cell adhesion and the differentiation of human fetal neural precursors

Paper ID Volume ID Publish Year Pages File Format Full-Text
9393 628 2010 10 PDF Available
Title
The use of superporous Ac-CGGASIKVAVS-OH-modified PHEMA scaffolds to promote cell adhesion and the differentiation of human fetal neural precursors
Abstract

Modifications of poly(2-hydroxyethyl methacrylate) (PHEMA) with laminin-derived Ac-CGGASIKVAVS-OH peptide sequences have been developed to construct scaffolds that promote cell adhesion and neural differentiation. Radical copolymerization of 2-hydroxyethyl methacrylate with 2-aminoethyl methacrylate (AEMA) and ethylene dimethacrylate in the presence of ammonium oxalate crystals resulted in the formation of superporous P(HEMA-AEMA) hydrogels. They were reacted with γ-thiobutyrolactone to yield 2-(4-sulfanylbutanamido)ethyl methacrylate (P(HEMA-AEMA)-SH) unit. The Ac-CGGASIKVAVS-OH peptide was immobilized to the sulfhydryl groups of P(HEMA-AEMA)-SH by 2,2′-dithiodipyridine linking reagent via 2-[4-(2-pyridyldisulfanyl)butanamido]ethyl methacrylate (P(HEMA-AEMA)-TPy). The adhesion and morphology of rat mesenchymal stem cells were investigated on the Ac-CGGASIKVAVS-OH-modified P(HEMA-AEMA) as well as on PHEMA, P(HEMA-AEMA)-SH and P(HEMA-AEMA)-TPy hydrogels. Superporous Ac-CGGASIKVAVS-OH-modified PHEMA scaffolds significantly increased the number of attached cells and their growth area on the hydrogel surface in the absence and in the presence of serum in the culture medium. Additionally, the Ac-CGGASIKVAVS-OH peptide supported the attachment, proliferation, differentiation and process spreading of human fetal neural stem cells during the first two weeks of expansion and contributed to the formation of a high percentage of more mature neural cells after four weeks of expansion. The Ac-CGGASIKVAVS-OH modification of superporous P(HEMA-AEMA) hydrogels improves cell adhesive properties and promotes neural stem cell differentiation.

Keywords
Cell adhesion; Laminin; Mesenchymal stem cell; Neural cell; PolyHEMA
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The use of superporous Ac-CGGASIKVAVS-OH-modified PHEMA scaffolds to promote cell adhesion and the differentiation of human fetal neural precursors
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 31, Issue 23, August 2010, Pages 5966–5975
Authors
, , , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us