Cellular Behavior of Human Adipose-Derived Stem Cells on Wettable Gradient Polyethylene Surfaces

International Journal of Molecular Sciences

Hyun Hee Ahn¹  Il Woo Lee¹  Hai Bang Lee² 

[1] Department of Neurosurgery, Catholic University of Korea, Daejeon 301-723, Korea; E-Mails:;Department of Molecular Science and Technology, Ajou University, Suwon 443-759, Korea; E-Mail:

关键词: surface wettability;    roughness;    corona discharge;    human adipose derived stem cells;    integrin beta 1 gene;    heat shock protein;   

DOI  :  10.3390/ijms15022075

来源: mdpi

【 摘 要 】

Appropriate surface wettability and roughness of biomaterials is an important factor in cell attachment and proliferation. In this study, we investigated the correlation between surface wettability and roughness, and biological response in human adipose-derived stem cells (hADSCs). We prepared wettable and rough gradient polyethylene (PE) surfaces by increasing the power of a radio frequency corona discharge apparatus with knife-type electrodes over a moving sample bed. The PE changed gradually from hydrophobic and smooth surfaces to hydrophilic (water contact angle, 90º to ~50º) and rough (80 to ~120 nm) surfaces as the power increased. We found that hADSCs adhered better to highly hydrophilic and rough surfaces and showed broadly stretched morphology compared with that on hydrophobic and smooth surfaces. The proliferation of hADSCs on hydrophilic and rough surfaces was also higher than that on hydrophobic and smooth surfaces. Furthermore, integrin beta 1 gene expression, an indicator of attachment, and heat shock protein 70 gene expression were high on hydrophobic and smooth surfaces. These results indicate that the cellular behavior of hADSCs on gradient surface depends on surface properties, wettability and roughness.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland