title: Three-dimensional Organotypic Culture Models of Human Hepatocellular Carcinoma.
abstract: Three-dimensional cell culture methods are viable in vitro approaches that facilitate the examination of biological features cancer cells present in vivo. In this study, we demonstrate that hepatocellular carcinoma (HCC) cells in porous alginate scaffolds can generate organoid-like spheroids that mimic numerous features of glandular epithelium in vivo, such as acinar morphogenesis and apical expression patterns of EpCAM, a hepatic stem/progenitor cell marker highly expressed in a subset of HCC with stemness features. We show that the activation of Wnt/β-catenin signaling, an essential pathway for maintaining HCC stemness, is required for EpCAM(+) HCC spheroid formation as well as the maintenance of the acinous structure. Furthermore, we demonstrate that EpCAM(+) HCC cells cultured as spheroids are more sensitive to TGF/β-induced epithelial-mesenchymal transition with highly tumorigenic and metastatic potential in vivo compared to conventional two-dimensional (2D) culture. In addition, HCC cells in EpCAM(+) spheroids are more resistant to chemotherapeutic agents than 2D-cultured cells. The alginate scaffold-based organotypic culture system is a promising, reliable, and easy system that can be configured into a high throughput fashion for the identification of critical signaling pathways and screening of molecular drug targets specific for HCC.
authors.affiliation: Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892, USA.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Takai
authors.affiliation: Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892, USA.
authors.forename: Valerie
authors.initials: V
authors.lastname: Fako
authors.affiliation: Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892, USA.
authors.forename: Hien
authors.initials: H
authors.lastname: Dang
authors.affiliation: Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892, USA.
authors.forename: Marshonna
authors.initials: M
authors.lastname: Forgues
authors.affiliation: Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892, USA.
authors.forename: Zhipeng
authors.initials: Z
authors.lastname: Yu
authors.affiliation: Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892, USA.
authors.forename: Anuradha
authors.initials: A
authors.lastname: Budhu
authors.affiliation: Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892, USA.
authors.forename: Xin Wei
authors.initials: XW
authors.lastname: Wang
mesh_terms: D000818:Animals; D015415:Biomarkers; D006528:Carcinoma, Hepatocellular / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D045744:Cell Line, Tumor; D004195:Disease Models, Animal; D000071858:Epithelial Cell Adhesion Molecule / Q000235:genetics / Q000378:metabolism; D058750:Epithelial-Mesenchymal Transition; D015870:Gene Expression; D064593:Heterografts; D006801:Humans; D007150:Immunohistochemistry; D066298:In Vitro Techniques; D008113:Liver Neoplasms / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D051379:Mice; D018874:Spheroids, Cellular; D046509:Tissue Culture Techniques; D014407:Tumor Cells, Cultured
chemical_list: D015415:Biomarkers; D000071858:Epithelial Cell Adhesion Molecule