A novel microfluidic model can mimic organ-specific metastasis of circulating tumor cells
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Jing Kong1, Yong Luo2, Dong Jin1, Fan An2, Wenyuan Zhang1, Lilu Liu1, Jiao Li1, Shimeng Fang1, Xiaojie Li1, Xuesong Yang3, Bingcheng Lin2,4, Tingjiao Liu1
1College of Stomatology, Dalian Medical University, Dalian, China
2Faculty of Chemical, Environmental and Biological Science and Technology, Dalian Technology University, Dalian, China
3Department of Biochemistry and Molecular Biology, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, Dalian Medical University, Dalian, China
4Department of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
Tingjiao Liu, email: firstname.lastname@example.org
Bingcheng Lin, email: email@example.com
Keywords: microfluidic, metastasis, circulating tumor cells, multi-organ, bionic model
Received: February 13, 2016 Accepted: April 02, 2016 Published: May 15, 2016
A biomimetic microsystem might compensate costly and time-consuming animal metastatic models. Herein we developed a biomimetic microfluidic model to study cancer metastasis. Primary cells isolated from different organs were cultured on the microlfuidic model to represent individual organs. Breast and salivary gland cancer cells were driven to flow over primary cell culture chambers, mimicking dynamic adhesion of circulating tumor cells (CTCs) to endothelium in vivo. These flowing artificial CTCs showed different metastatic potentials to lung on the microfluidic model. The traditional nude mouse model of lung metastasis was performed to investigate the physiological similarity of the microfluidic model to animal models. It was found that the metastatic potential of different cancer cells assessed by the microfluidic model was in agreement with that assessed by the nude mouse model. Furthermore, it was demonstrated that the metastatic inhibitor AMD3100 inhibited lung metastasis effectively in both the microfluidic model and the nude mouse model. Then the microfluidic model was used to mimick liver and bone metastasis of CTCs and confirm the potential for research of multiple-organ metastasis. Thus, the metastasis of CTCs to different organs was reconstituted on the microfluidic model. It may expand the capabilities of traditional cell culture models, providing a low-cost, time-saving, and rapid alternative to animal models.
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