学術雑誌論文 Vascularized subcutaneous human liver tissue from engineered hepatocyte/fibroblast sheets in mice

Sakai, Yusuke  ,  Yamanouchi, Kosho  ,  Ohashi, Kazuo  ,  Koike, Makiko  ,  Utoh, Rie  ,  Hasegawa, Hideko  ,  Muraoka, Izumi  ,  Suematsu, Takashi  ,  Soyama, Akihiko  ,  Hidaka, Masaaki  ,  Takatsuki, Mitsuhisa  ,  Kuroki, Tamotsu  ,  Eguchi, Susumu

65pp.66 - 75 , 2015-10 , Elsevier BV
ISSN:01429612
内容記述
Subcutaneous liver tissue engineering is an attractive and minimally invasive approach used to curative treat hepatic failure and inherited liver diseases. However, graft failure occurs frequently due to insufficient infiltration of blood vessels (neoangiogenesis), while the maintenance of hepatocyte phenotype and function requires invivo development of the complex cellular organization of the hepatic lobule. Here we describe a subcutaneous human liver construction allowing for rapidly vascularized grafts by transplanting engineered cellular sheets consisting of human primary hepatocytes adhered onto a fibroblast layer. The engineered hepatocyte/fibroblast sheets (EHFSs) showed superior expression levels of vascularization-associated growth factors (vascular endothelial growth factor, transforming growth factor beta 1, and hepatocyte growth factor) invitro. EHFSs developed into vascularized subcutaneous human liver tissues contained glycogen stores, synthesized coagulation factor IX, and showed significantly higher synthesis rates of liver-specific proteins (albumin and alpha 1 anti-trypsin) invivo than tissues from hepatocyte-only sheets. The present study describes a new approach for vascularized human liver organogenesis under mouse skin. This approach could prove valuable for establishing novel cell therapies for liver diseases.
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http://naosite.lb.nagasaki-u.ac.jp/dspace/bitstream/10069/36001/1/Biomaterials65_66.pdf

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