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KMID : 1188320170110010121
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Gut and Liver
2017 Volume.11 No. 1 p.121 ~ p.128
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Generation of Multilayered 3D Structures of HepG2 Cells Using a Bio-printing Technique
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Jeon Hye-Ryeon
Kang Kyo-Jin
Park Su-A
Kim Wan-Doo
Paik Seung-Sam
Lee Sang-Hun
Jeong Jae-Min
Choi Dong-Ho
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Abstract
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Background/Aims: Chronic liver disease is a major widespread cause of death, and whole liver transplantation is the only definitive treatment for patients with end-stage liver diseases. However, many problems, including donor shortage, surgical complications and cost, hinder their usage. Recently, tissue-engineering technology provided a potential breakthrough for solving these problems. Three-dimensional (3D) printing technology has been used to mimic tissues and organs suitable for transplantation, but applications for the liver have been rare.
Methods: A 3D bioprinting system was used to construct 3D printed hepatic structures using alginate. HepG2 cells were cultured on these 3D structures for 3 weeks and examined by fluorescence microscopy, histology and immunohistochemistry. The expression of liver-specific markers was quantified on days 1, 7, 14, and 21.
Results: The cells grew well on the alginate scaffold, and liver-specific gene expression increased. The cells grew more extensively in 3D culture than two-dimensional culture and exhibited better structural aspects of the liver, indicating that the 3D bioprinting method recapitulates the liver architecture.
Conclusions: The 3D bioprinting of hepatic structures appears feasible. This technology may become a major tool and provide a bridge between basic science and the clinical challenges for regenerative medicine of the liver.
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KEYWORD
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Hep G2 cell, Printing, three-dimensional
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