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Adhesion, migration and mechanics of human adipose-tissue-derived stem cells on silk fibroin–chitosan matrix

Paper ID Volume ID Publish Year Pages File Format Full-Text
2514 114 2010 10 PDF Available
Title
Adhesion, migration and mechanics of human adipose-tissue-derived stem cells on silk fibroin–chitosan matrix
Abstract

Silk fibroin–chitosan (SFCS) scaffold is a naturally derived biocompatible matrix with potential reconstructive surgical applications. In this study, human adipose-derived mesenchymal stem cells (ASCs) were seeded on SFCS scaffolds and cell attachment was characterized by fluorescence, confocal, time-lapse, atomic force, and scanning electron microscopy (SEM) studies. Adhesion of ASCs on SFCS was 39.4 ± 4.8% at 15 min, increasing to 92.8 ± 1.5% at 120 min. ASC adhered at regions of architectural complexity and infiltrate into three-dimensional scaffold. Time-lapse confocal studies indicated a mean ASC speed on SFCS of 18.47 ± 2.7 μm h−1 and a mean persistence time of 41.4 ± 9.3 min over a 2.75 h study period. Cytokinetic and SEM studies demonstrated ASC–ASC interaction via microvillus extensions. The apparent elastic modulus was significantly higher (p < 0.0001) for ASCs seeded on SFCS (69.0 ± 9.0 kPa) than on glass (6.1 ± 0.4 kPa). Also, cytoskeleton F-actin fiber density was higher (p < 0.05) for ASC seeded on SFCS (0.42 ± 0.02 fibers μm−1) than on glass-seeded controls (0.24 ± 0.03 fibers μm−1). Hence, SFCS scaffold facilitates mesenchymal stem cell attachment, migration, three-dimensional infiltration, and cell–cell interaction. This study showed the potential use of SFCS as a local carrier for autologous stem cells for reconstructive surgery application.

Keywords
Biodegradable scaffold; Silk fibroin; Mesenchymal stem cells; Cell migration; Tissue reconstruction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 6, Issue 4, April 2010, Pages 1388–1397
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