[2017-Vol.14-Issue 3]Response of MG63 Osteoblast Cells to Surface Modification of Ti-6Al-4V Implant Alloy by Laser Interference Lithography
Time: 2017-09-12 16:28  Click:39

Journal of Bionic Engineering

Volume 14, Issue 3, July 2017, Pages 448-458
Qi Liu1 , Wenjun Li1 , Liang Cao1 , Jiajia Wang1 , Yingmin Qu1 , Xinyue Wang1 , Rongxian Qiu1 , Xu Di1 , Zuobin Wang1 , Bojian Liang2
1. International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
2. Department of Orthopaedic Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, China
 

Abstract

The response of human osteoblast-like osteosarcoma cells (MG63) to surface modification of Ti-6Al-4V implant alloy was investigated by Laser Interference Lithography (LIL). In this work, laser interference lithography was employed to fabricate the microstructures of grooves, dots and dimples onto the surfaces of Ti-6Al-4V samples. Two and three beam LIL systems were developed to carry out the experiments. The laser treatment resulted in the increases of the roughness and the contact angle of water on the implant alloy surfaces. The proliferation of osteoblasts was analyzed by MTT (3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide) assay for the time periods of 4 hours, 2 days, 3 days, and 6 days. The MTT test results demonstrated that the laser treatment surfaces had a positive impact on the proliferation of osteoblast cells after 24 hours. The alloy surface morphology and the morphological changes of MG63 cells cultured on the laser textured Ti-6Al-4V surface were observed by Scanning Electron Microscope (SEM). The SEM results indicated that the osteoblast cells were aligned on grooved surfaces and they were prolonged with the structures. Enzymatic detachment results showed that the 20 µm grooved structures provided the better cell adhesion to the textured Ti-6Al-4V surfaces.

Keywords

Ti-6Al-4V implant alloy;
laser interference lithography;
surface modification;
surface properties;
cell-substrate interaction
 


Full text is available at 
http://www.sciencedirect.com/science/article/pii/S1672652916604109

 

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