Genetically engineered elastin-like polymer as a substratum to culture cells from the ocular surface.

Abstract:

PURPOSE:To investigate epithelial cell adhesion and proliferation on a newly developed elastin-like polymer (ELP) that mimics the functional characteristics of extracellular matrices. MATERIALS AND METHODS:A genetically engineered ELP with cell attachment sequences was adsorbed onto glass coverslips as 1, 2, or 3 molecular films. Conjunctival epithelial cells from a human cell line and human skin fibroblast cells (as controls) were plated onto coverslips with three different substrata: plain glass, Thermanox, and ELP-coated. Cells (10(4)) were plated after EDTA- or trypsin-based detachment. To test adhesion, epithelial and fibroblast cells were incubated for 4 hr, stained with hematoxylin, and counted. To study proliferation, Ki-67-positive epithelial cells were counted after 1, 3, and 5 days in culture. Immunostaining for conjunctival and adhesion markers was performed. RESULTS:Epithelial cell, but not fibroblast, adhesion on ELP was significantly enhanced compared to that of control substrata. Epithelial cells detached with EDTA alone adhered significantly better than those detached with trypsin. By day 5, epithelial cell proliferation on ELP was significantly greater than that on plain glass. Epithelial cells grown on ELP expressed conjunctival and adhesion markers. CONCLUSIONS:The recombinant ELP resembling the ocular surface extracellular matrix was a suitable substratum to sustain epithelial cell attachment and growth. This type of polymer may be suitable for tissue engineering to restore vision by reconstructing the ocular surface.

journal_name

Curr Eye Res

journal_title

Current eye research

authors

Martínez-Osorio H,Juárez-Campo M,Diebold Y,Girotti A,Alonso M,Arias FJ,Rodríguez-Cabello JC,García-Vázquez C,Calonge M

doi

10.1080/02713680802542053

subject

Has Abstract

pub_date

2009-01-01 00:00:00

pages

48-56

issue

1

eissn

0271-3683

issn

1460-2202

pii

908178657

journal_volume

34

pub_type

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