The Stabilization Effect of Mesenchymal Stem Cells on the Formation of Microvascular Networks in a Microfluidic Device
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概要
- 論文の詳細を見る
There is a demand for three-dimensional (3D) angiogenesis model including endothelial cells (ECs) and mesenchymal stem cells (MSCs), which are known to differentiate into pericytes, to construct stabilized and matured microvascular networks in vitro. However, it remains to be elucidated how MSCs affected on ECs in the process of 3D angiogenesis. In this study, we utilized a microfluidic device to develop a 3D coculture system including human umbilical vein ECs and human MSCs, which allowed us to investigate the effects of MSCs on ECs in the context of 3D angiogenesis. A series of EC:MSC ratio was tested in the EC-MSC coculture. First, we confirmed that MSCs differentiated into pericytes by direct EC-MSC contacts. Next, we found that MSCs attenuated vascular sprout formation of ECs regardless of EC:MSC ratio in the early stage of 3D angiogenesis as well as extension of microvascular networks in the later stage. ECs and MSCs were also cultured under interstitial flow to enhance angiogenesis. However, the stabilization effects of MSCs on the extension of capillary structures were dominant over the promotion effects of the interstitial flow. These results indicate the stabilization effect of MSCs on the formation of microvascular networks in vitro. Although some HMSCs differentiated into pericytes and located around microvascular networks, vascular structures became thick over time in coculture. The 3D EC-MSC coculture model described in this study is useful to further investigate culture microenvironments for constructing stabilized and matured microvascular networks with aligning pericytes.
著者
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Ikeda Mariko
School Of Fundamental Sci. And Technol. Keio Univ.
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Mabuchi Yo
Department Of Physiology Keio University School Of Medicine
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Sudo Ryo
School of Fundamental Science and Technology, Graduate School of Keio University
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Matsuzaki Yumi
Department Of Immunology University Of Tsukuda
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Tanishita Kazuo
School Of Allied Health Sciences Kitasato University
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KAMM Roger
Departments of Mechanical Engineering and Biological Engineering, Massachusetts Institute of Technology
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YAMAMOTO Kyoko
School of Integrated Design Engineering, Keio University
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TANIMURA Kohei
School of Integrated Design Engineering, Keio University
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CHUNG Seok
School of Mechanical Engineering, Korea University
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IKEDA Mariko
School of Integrated Design Engineering, Keio University
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