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A variety of extracellular matrix (ECM) scaffolds have been promising in various tissue engineering applications, such as the porcine small intestinal submucosa. Yet no particular scaffolds have been optimal for vocal fold regeneration. The decellularized human umbilical vein (HUV) is a novel allogeneic scaffold that has shown some promise for cardiovascular tissue engineering. This study examines...
Rotator cuff tears are among the most common shoulder injuries that require surgery. High failure rates of biological graft-based repairs underscore the need for functional alternatives. In this study, effects of nanofiber organization on adhesion of cuff fibroblasts (hRCF) and human mesenchymal stem cells (hMSC) are evaluated. It is hypothesized that fiber alignment will regulate cell morphology...
Epithelial-stromal interactions play a crucial role in normal embryonic development and carcinogenesis of the human breast while the underlying mechanisms of these events remain poorly understood. Here, we constructed a physiologically relevant, 3D culture surrogate of complex human breast tissue that included a tri-culture system made up of human mammary epithelial cells (MCF10A), fibroblasts and...
The migration of vascular smooth muscle cells (SMCs) and fibroblasts into the intima after vascular injury is a central process in vascular lesion formation. The elevation of transmural interstitial flow is also observed after damage to the vascular endothelium. We have previously shown that interstitial flow promotes vascular cell motility in 3-D collagen I gels via upregulation of MMP-1. In this...
The objective of this study was to fabricate 3-dimensional (3D) chitosan nanofiber scaffolds using an electrospinning technique and explore its potential for cardiac tissue engineering. Three culture conditions were tested: cardiomyocytes only, cardiomyocytes-fibroblasts cocultures, and cardiomyocyte-endothelial cells cocultures. The cells were seeded on 2-dimensional (2D) chitosan films and 3D chitosan...
In this article, significant differences in cell growth and gene expression have been detected on PLGA and PCL scaffolds. Specifically, cell proliferation on the PCL based scaffolds has been found to be significantly greater than on the PLGA based scaffolds after four weeks in vitro. Results also suggest that differences in scaffold mechanical properties regulate the expression of key extracellular...
Spinal cord injury (SCI) affects thousands of Americans each year. The injury results in local cell loss in the spinal cord, interrupting the connections between brain and periphery. Current treatment options for SCI are limited due to the inability of adult neurons to regenerate in the inhibitory environment of the injured central nervous system (CNS). The primary goal of this work is to design a...
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