3-D Nanofibrous electrospun multilayered construct is an alternative ECM mimicking scaffold

S. Srouji, T. Kizhner, E. Suss-Tobi, E. Livne, E. Zussman

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Extra cellular matrix (ECM) is a natural cell environment, possesses complicated nano- and macro- architecture. Mimicking this three-dimensional (3-D) web is a challenge in the modern tissue engineering. This study examined the application of a novel 3-D construct, produced by multilayered organization of electrospun nanofiber membranes, for human bone marrow-derived mesenchymal stem cells (hMSCs) support. The hMSCs were seeded on an electrospun scaffold composed of poly ε-caproloactone (PCL) and collagen (COL) (1:1), and cultured in a dynamic flow bioreactor prior to in vivo implantation. Cell viability after seeding was analyzed by AlamarBlue™ Assay. At the various stages of experiment, cell morphology was examined by histology, scanning electron microscopy (SEM) and confocal microscopy. Results: A porous 3-D network of randomly oriented nanofibers appeared to support cell attachment in a way similar to traditionally used tissue culture polysterene plate. The following 6 week culture process of the tested construct in the dynamic flow system led to massive cell proliferation with even distribution inside the scaffold. Subcutaneous implantation of the cultured construct into nude mice demonstrated good integration with the surrounding tissues and neovascularization. Conclusion: The combination of electrospinning technology with multilayer technique resulted in the novel 3-D nanofiber multilayered construct, able to contain efficient cell mass necessary for a successful in vivo grafting. The success of this approach with undifferentiated cells implies the possibility of its application as a platform for development of constructs with cells directed into various tissue types.

Original languageEnglish
Pages (from-to)1249-1255
Number of pages7
JournalJournal of Materials Science: Materials in Medicine
Issue number3
StatePublished - Mar 2008
Externally publishedYes

Bibliographical note

Funding Information:
Acknowledgements The authors wish to express their thanks to EU Grant No. 200356, Genostem ‘‘From the Bench to the Bedside’’, and the Volkswagen Foundation for partially supporting this study, to Mrs. Ilana Drachsler, Pessia Schenzer and Dr. S. Chervinsky for their excellent technical assistance and to Pluristem Life Systems, Inc. for providing the bioreactor.


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