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Nano- and sub-micron porous polyelectrolyte multilayer assemblies: Biomimetic surfaces for human corneal epithelial cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
8809 606 2009 8 PDF Available
Title
Nano- and sub-micron porous polyelectrolyte multilayer assemblies: Biomimetic surfaces for human corneal epithelial cells
Abstract

In vivo, corneal epithelial cells adhere on basement membranes that exhibit porosity on the nanoscale with the diameters of pores and fibers ranging from 20 to 200 nm. Polyelectrolyte multilayers with porosity ranging from the nano to the microscale were assembled to mimic the pore sizes of corneal membranes in vivo. The average pore diameter was found to be 100 nm and 600 nm for the nanoporous and sub-micron porous films respectively. In this study, a purely physical feature, specifically, porosity, provided cues to human corneal epithelial cells. Porous surfaces that exhibited either 100 nm or 600 nm pore diameters supported corneal cell adhesion, however, nanoscale porosity significantly enhanced corneal epithelial cellular response. Corneal epithelial cell proliferation and migration speeds were significantly higher on nanoporous topographies. The actin cytoskeletal organization was well defined and vinculin focal adhesions were found in cells presented with a nanoscale environment. These trends prevailed for fibronectin-coated surfaces as well suggesting that for human corneal epithelial cells, the physical environment plays a defining role in guiding cell behavior.

Keywords
Nanoscale topography; Nanoporous polyelectrolyte multilayers; Corneal tissue engineering; Biomimetic surface topography
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Nano- and sub-micron porous polyelectrolyte multilayer assemblies: Biomimetic surfaces for human corneal epithelial cells
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 30, Issues 23–24, August 2009, Pages 4029–4036
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