Role of material surfaces in regulating bone and cartilage cell response.

Abstract:

:Tissue engineering in vitro and in vivo involves the interaction of cells with a material surface. The nature of the surface can directly influence cellular response, ultimately affecting the rate and quality of new tissue formation. Initial events at the surface include the orientated adsorption of molecules from the surrounding fluid, creating a conditioned interface to which the cell responds. The gross morphology, as well as the microtopography and chemistry of the surface, determine which molecules can adsorb and how cells will attach and align themselves. The focal attachments made by the cells with their substrate determine cell shape which, when transduced via the cytoskeleton to the nucleus, result in expression of specific phenotypes. Osteoblasts and chondrocytes are sensitive to subtle differences in surface roughness and surface chemistry. Studies comparing chondrocyte response to TiO2 of differing crystallinities show that cells can discriminate between surfaces at this level as well. Cellular response also depends on the local environmental and state of maturation of the responding cells. Optimizing surface structure for site-specific tissue engineering is one option; modifying surfaces with biologicals is another.

journal_name

Biomaterials

journal_title

Biomaterials

authors

Boyan BD,Hummert TW,Dean DD,Schwartz Z

doi

10.1016/0142-9612(96)85758-9

subject

Has Abstract

pub_date

1996-01-01 00:00:00

pages

137-46

issue

2

eissn

0142-9612

issn

1878-5905

pii

0142961296857589

journal_volume

17

pub_type

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