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In vivo cellular repopulation of tubular elastin scaffolds mediated by basic fibroblast growth factor

Paper ID Volume ID Publish Year Pages File Format Full-Text
9989 657 2007 9 PDF Available
Title
In vivo cellular repopulation of tubular elastin scaffolds mediated by basic fibroblast growth factor
Abstract

In vivo tissue engineering has been explored as a method to repopulate scaffolds with autologous cells to create a functional, living, and non-immunogenic tissue substitute. In this study, we describe an approach to in vivo cellular repopulation of a tissue-derived tubular elastin scaffold. Pure elastin scaffolds were prepared from porcine carotid arteries (elastin tubes). Elastin tubes were filled with agarose gel containing basic fibroblast growth factor (bFGF) to allow sustained release of growth factor. These tubes were implanted in subdermal pouches in adult rats. The elastin tubes with growth factor had significantly more cell infiltration at 28 days than those without growth factor. Immunohistochemical staining indicated that most of these cells were fibroblasts, of which a few were activated fibroblasts (myofibroblasts). Microvasculature was also observed within the scaffolds. Macrophage infiltration was seen at 7 days, which diminished by 28 days of implantation. None of the elastin tubes with bFGF calcified. These results demonstrated that the sustained release of bFGF brings about repopulation of elastin scaffolds in vivo while inhibiting calcification. Results showing myofibroblast infiltration and vascularization are encouraging since such an in vivo implantation technique could be used for autologous cell repopulation of elastin scaffolds for vascular graft applications.

Keywords
Elastin based scaffold; Basic fibroblast growth factor; Subdermal implant; Calcification; Tissue engineering
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In vivo cellular repopulation of tubular elastin scaffolds mediated by basic fibroblast growth factor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 28, Issue 18, 2007, Pages 2830–2838
Authors
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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