Abstract
Vascular structures are essential for the survival of thick artificial three-dimensional (3D) tissues. However, it is difficult to create high-cell-density artificial tissue with vascular structures of a few hundred micrometers in diameter. Bioprinting technology can create artificial 3D tissues with vascular structures of a few hundred micrometers in diameter, but the cell density of bio-printed artificial 3D tissues is low. On the other hand, cell sheet technology can create high-cell-density artificial 3D tissues by stacking, but it is not possible to set small vascular structures at any place. In this study, we successfully demonstrated high-cell-density artificial 3D tissues with vascular-like structures by stacking cell sheets combined with bioprinting technology.





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Acknowledgements
This work was supported by Japan Society for the Promotion of Science (no. 18K18838) and Japan Science and Technology Agency (no. JPMJMI18CD).
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This work was presented in part at the International Symposium on Biocomplexity (ISBC) 2019 Summer Symposium (Tokyo, August 9, 2019).
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Tanaka, Ri., Sakaguchi, K. & Umezu, S. Printing support hydrogels for creating vascular-like structures in stacked cell sheets. Artif Life Robotics 25, 199–203 (2020). https://doi.org/10.1007/s10015-020-00605-7
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DOI: https://doi.org/10.1007/s10015-020-00605-7