QUT ePrints

Surface Roughness and Topography of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Influences Osteoblast Cell Growth

Keen, Imelda, Raggatt, Liza, Cool, Simon , Nurcombe, Victor , Fredericks, Peter M., Trau, Matt , & Grondahl, Lisbeth (2007) Surface Roughness and Topography of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Influences Osteoblast Cell Growth. Journal of Biomaterials Science, Polymer Edition, 18(9), pp. 1101-1123.

View at publisher

Abstract

Osteoblast proliferation is sensitive to the topography of material surfaces. In this study, the proliferation of MC3T3 E1-S14 osteoblast cells on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) films with different surface characteristics was investigated. The solvent cast films were prepared using three different solvents/solvent mixtures; chloroform, DCM and a mixture of chloroform and acetone which produced PHBV films with both a rough (at the air interface) and smooth (at the glass interface) surface. Investigation of the surface characteristics by scanning electron and scanning probe microscopies revealed different surface topographies and degrees of surface roughness ranging from 20 to 200 nm. Mapping of the surface crystallinity index by micro-attenuated total reflectance Fourier transform infrared (ATR-FTIR) showed distinct variations in surface crystallinity between the different film surfaces. Water contact angles were significantly higher on the rough surface compared the smooth surface for a particular substrate, however, all surfaces were hydrophobic in nature (θA was in the range 69 - 80 degrees). MC3T3 E1-S14 osteoblast cells were cultured on the six different surfaces and proliferation was determined. After 2 days cell proliferation on all surfaces was significantly less than on the control substrate, however, after 4 days cell proliferation was optimal on the three surfaces that displayed the highest contact angle and the smallest crystallinity heterogeneity. In addition, the surface roughness and more specifically the surface topography influenced the proliferation of osteoblast cells on the PHBV film surface.

Impact and interest:

9 citations in Scopus
Search Google Scholar™
9 citations in Web of Science®

Citation countsare sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

847 since deposited on 11 Sep 2007
234 in the past twelve months

Full-text downloadsdisplays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 9409
Item Type: Journal Article
Keywords: surface topography, surface roughness, surface crystallinity, wettability, PHBV, MC3T3 E1, S14 cells, osteoblast proliferation
DOI: 10.1163/156856207781554046
ISSN: 1568-5624
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Colloid and Surface Chemistry (030603)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2007 Brill Academic Publishers
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 11 Sep 2007
Last Modified: 29 Feb 2012 23:32

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page