alexa Design of a Novel Method for the Spatial Distribution of Cells within a Porous Scaffold for Tissue Engineering Applications
ISSN: 2157-7552

Journal of Tissue Science & Engineering
Open Access

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Research Article

Design of a Novel Method for the Spatial Distribution of Cells within a Porous Scaffold for Tissue Engineering Applications

Revathy Subramanian, Rudra Bhowmick and Heather Gappa-Fahlenkamp*

School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, USA

*Corresponding Author:
Heather Gappa-Fahlenkamp
School of Chemical Engineering
Oklahoma State University, Stillwater
OK 74078, USA
Tel: 405-744- 5280
E-mail: [email protected]

Received date: April 09, 2017; Accepted date: May 12, 2017; Published date: May 31, 2017

Citation: Subramanian R, Bhowmick R, Gappa-Fahlenkamp H (2017) Design of a Novel Method for the Spatial Distribution of Cells within a Porous Scaffold for Tissue Engineering Applications. J Tissue Sci Eng 8:201. doi:10.4172/2157-7552.1000201

Copyright: © 2017 Subramanian R, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Tissue engineering is rapidly progressing to provide complex, three-dimensional (3D) representations of human tissues that can be used for tissue replacement and/or to study tissue systems. Tissue engineering includes the addition of cells within 3D scaffolds, along with bioactive components, sometimes within a bioreactor. A major challenge in developing many tissue-engineered models is the ability to evenly distribute cells throughout a porous scaffold, in order to achieve good cell viability and growth. In this study, we created a 3D collagen-chitosan scaffold with specific properties to aid in seeding cells within the entire volume and investigated a dynamic method to seed cells within such scaffold. Based on the requirements for cell seeding, the scaffolds were less than 500 µm thick, had pore sizes greater than 50 µm and had a porosity of 50% or greater. Fibroblasts were used as model cells for this seeding method. To seed fibroblasts within the scaffold, we varied two design parameters: concentration of the collagen seeding solution and the centrifugal force used for cell seeding. We ranked the seeding efficiency, cell proliferation and distribution in order to choose the ideal cell seeding method. Results showed that seeding with a higher concentration (2 mg/ml) of collagen seeding solution and a lower centrifugation speed (259 ×g) was the optimal seeding method, resulting in 84% increase in cell proliferation and a more uniform cell distribution throughout the scaffold. Results from this study can be applied for seeding a variety of cell populations within porous scaffolds for tissue engineering applications.

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