Differentiation of human embryonic stem cells along a hepatic lineage.
The limited availability of hepatic tissue suitable for the treatment of liver disease and drug discovery research advances the generation of hepatic-like cells from alternative sources as a valuable approach. In this investigation we exploited a unique hepatic differentiation approach to generate hepatocyte-like cells from human embryonic stem cells (hESCs). hESCs were cultured for 10-20 days on collagen substrate in highly defined and serum free hepatocyte media. The resulting cell populations exhibited hepatic cell-like morphology and were characterized with a variety of biological endpoint analyses. Real-time PCR analysis demonstrated that mRNA expression of the 'stemness' marker genes NANOG and alkaline phosphatase in the differentiated cells was significantly reduced, findings that were functionally validated using alkaline phosphatase activity detection measures. Immunofluorescence studies revealed attenuated levels of the 'stemness' markers OCT4, SOX2, SSEA-3, TRA-1-60, and TRA-1-81 in the hepatic-like cell population. The hepatic character of the cells was evaluated additionally by real-time PCR analyses that demonstrated increased mRNA expression of the hepatic transcription factors FOXA1, C/EBPα, and HNF1α, the nuclear receptors CAR, RXRα, PPARα, and HNF4α, the liver-generated plasma proteins α-fetoprotein, transthyretin, transferrin, and albumin, the protease inhibitor α-1-antitrypsin, metabolic enzymes HMGCS2, PEPCK, and biotransformation enzymes CYP3A7, CYP3A4, CYP3A5, and CYP2E1. Indocyanine green uptake albumin secretion and glycogen storage capacity further confirmed acquisition of hepatic function. These studies define an expeditious methodology that facilitates the differentiation of hESCs along a hepatic lineage and provide a framework for their subsequent use in pharmacological and toxicological research applications requiring a renewable supply of human hepatocytes.
Center for Molecular Toxicology and Carcinogenesis, Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, PA 16802, USA.
Stephanie M
SM
Zamule
Denise M
DM
Coslo
Fengming
F
Chen
Curtis J
CJ
Omiecinski
D000469:Alkaline Phosphatase / Q000235:genetics / Q000378:metabolism; D000954:Antigens, Surface / Q000378:metabolism; D015295:Antigens, Tumor-Associated, Carbohydrate / Q000378:metabolism; D002454:Cell Differentiation; D019070:Cell Lineage; D002478:Cells, Cultured; D053595:Embryonic Stem Cells / Q000166:cytology*; D022781:Hepatocytes / Q000378:metabolism*; D018398:Homeodomain Proteins / Q000235:genetics / Q000378:metabolism; D006801:Humans; D000071317:Nanog Homeobox Protein; D050814:Octamer Transcription Factor-3 / Q000378:metabolism; D011509:Proteoglycans / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism; D018160:Receptors, Cytoplasmic and Nuclear / Q000235:genetics / Q000378:metabolism; D055748:SOXB1 Transcription Factors / Q000378:metabolism; D055746:Stage-Specific Embryonic Antigens / Q000378:metabolism; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism
D000954:Antigens, Surface; D015295:Antigens, Tumor-Associated, Carbohydrate; D018398:Homeodomain Proteins; C486780:NANOG protein, human; D000071317:Nanog Homeobox Protein; D050814:Octamer Transcription Factor-3; D011509:Proteoglycans; D012333:RNA, Messenger; D018160:Receptors, Cytoplasmic and Nuclear; C527782:SOX2 protein, human; D055748:SOXB1 Transcription Factors; D055746:Stage-Specific Embryonic Antigens; C107064:TRA-1-60 antigen, human; C519803:TRA-1-81 antigen, human; D014157:Transcription Factors; C052924:stage-specific embryonic antigen-3; D000469:Alkaline Phosphatase
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