Abstract:
:The isolation and culture of articular chondrocytes is a prerequisite of their use in tissue engineering, but prolonged culture and passaging is associated with de-differentiation. In this paper we studied the influence of nanometric and micrometric grooves (85 nm to 8 microm in depth and 2 microm to 20 microm in width) on 1st and 2nd passage ovine chondrocytes since our earlier findings indicate that primary cells are not affected by such features. 1st and 2nd passage chondrocytes cultured on grooved substrata showed a polarisation of cell shape parallel to the groove long axis and F-actin condensations were evident at groove ridge boundaries. An increase in cell migration with increasing groove depth was observed. Both passages of chondrocytes maintained type II collagen expression, but to a lesser degree in 2nd. This study demonstrates that passage number alters the response of chondrocytes to micrometric and nanometric topography, and could be important in ex vivo cartilage engineering.
journal_name
Cell Biol Intjournal_title
Cell biology internationalauthors
Hamilton DW,Riehle MO,Monaghan W,Curtis ASdoi
10.1016/j.cellbi.2004.12.008keywords:
subject
Has Abstractpub_date
2005-06-01 00:00:00pages
408-21issue
6eissn
1065-6995issn
1095-8355pii
S1065-6995(05)00011-9journal_volume
29pub_type
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