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Open AccessArticle

Cell Migration According to Shape of Graphene Oxide Micropatterns

1
Department of Cogno-Mechatronics Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan 46241, Korea
2
Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Korea
3
Research Center for Energy Convergence Technology, Pusan National University, Busan 46241, Korea
4
Dental Life Science Research Institute, Seoul National University Dental Hospital, Seoul 03080, Korea
5
Department of Mechanical Engineering, Sejong University, Seoul 05006, Korea
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editors: Chang-Hwan Choi, Aaron T. Ohta and Wenqi Hu
Micromachines 2016, 7(10), 186; https://doi.org/10.3390/mi7100186
Received: 26 August 2016 / Revised: 5 October 2016 / Accepted: 7 October 2016 / Published: 14 October 2016
(This article belongs to the Special Issue Microdevices and Microsystems for Cell Manipulation)
Photolithography is a unique process that can effectively manufacture micro/nano-sized patterns on various substrates. On the other hand, the meniscus-dragging deposition (MDD) process can produce a uniform surface of the substrate. Graphene oxide (GO) is the oxidized form of graphene that has high hydrophilicity and protein absorption. It is widely used in biomedical fields such as drug delivery, regenerative medicine, and tissue engineering. Herein, we fabricated uniform GO micropatterns via MDD and photolithography. The physicochemical properties of the GO micropatterns were characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM), and Raman spectroscopy. Furthermore, cell migration on the GO micropatterns was investigated, and the difference in cell migration on triangle and square GO micropatterns was examined for their effects on cell migration. Our results demonstrated that the GO micropatterns with a desired shape can be finely fabricated via MDD and photolithography. Moreover, it was revealed that the shape of GO micropatterns plays a crucial role in cell migration distance, speed, and directionality. Therefore, our findings suggest that the GO micropatterns can serve as a promising biofunctional platform and cell-guiding substrate for applications to bioelectric devices, cell-on-a-chip, and tissue engineering scaffolds. View Full-Text
Keywords: photolithography; meniscus-dragging deposition; graphene oxide; micropatterns; cell migration photolithography; meniscus-dragging deposition; graphene oxide; micropatterns; cell migration
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Kim, S.E.; Kim, M.S.; Shin, Y.C.; Eom, S.U.; Lee, J.H.; Shin, D.-M.; Hong, S.W.; Kim, B.; Park, J.-C.; Shin, B.S.; Lim, D.; Han, D.-W. Cell Migration According to Shape of Graphene Oxide Micropatterns. Micromachines 2016, 7, 186.

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    Description: Video S1: Time-lapse video of L929 fibroblasts on triangle GO micropatterns for 12 hours. Video S2: Time-lapse video of L929 fibroblasts on square GO micropatterns for 12 hours.
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