Premium
Both sides nanopatterned tubular collagen scaffolds as tissue‐engineered vascular grafts
Author(s) -
Zorlutuna P.,
Vadgama P.,
Hasirci V.
Publication year - 2010
Publication title -
journal of tissue engineering and regenerative medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.835
H-Index - 72
eISSN - 1932-7005
pISSN - 1932-6254
DOI - 10.1002/term.278
Subject(s) - tissue engineering , biomedical engineering , scaffold , smooth muscle , vascular smooth muscle , seeding , in vitro , anatomy , tube (container) , chemistry , materials science , microbiology and biotechnology , biophysics , biology , medicine , composite material , agronomy , biochemistry
Two major requirements for a tissue‐engineered vessel are the establishment of a continuous endothelium and adequate mechanical properties. In this study, a novel tubular collagen scaffold possessing nanopatterns in the form of channels (with a 650 nm periodicity) on both sides was designed and examined after seeding and co‐culturing with vascular cells. Initially, the exterior of the tube was seeded with human vascular smooth muscle cells (VSMCs), cultured for 14 days, and then human internal thoracic artery endothelial cells (HITAECs) were seeded on the inside of the tube and cultured for a further week. Microscopy revealed that nano‐scale patterns could be reproduced on collagen with high fidelity and preserved during incubation in vitro . The VSMCs were circumferentially orientated with the help of these nanopatterns and formed multilayers on the exterior, while HITAECs formed a continuous layer on the interior, as is the case in natural vessels. Both cell types were observed to proliferate and retain their phenotypes in the co‐culture. Copyright © 2010 John Wiley & Sons, Ltd.