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Differentiation of Adult Hepatic Stem-Like Cells Into Pancreatic Endocrine Cells

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To apply cell transplantation for treatment of diabetes mellitus, a sufficient number of -cell sources are required. In the present study, we examined whether an epithelial cell line obtained from normal adult rat liver, namely hepatic stem-like (HSL) cells, which can be converted to both hepatocytes and billiary epithelial cells, could be a potential -cell source. The growth speed of HSL cells was rapid and these cells were easily expanded in vitro. Bipotential hepatic stem cells, HSL cells, also expressed PGP9.5, which is expressed in neurons, -cells, and progenitor cells of the pancreatic endocrine cells as well. Sodium butyrate induced morphological changes in HSL cells and converted them into flattened cells with large cytoplasm. When HSL cells were incubated with a combination of 5 mM sodium butyrate and 1 nM betacellulin, most of the cells were converted into morphologically neuron-like cells. RT-PCR analysis revealed that a series of transcriptional factors involved in differentiation of pancreatic endocrine cells was induced by the treatment with sodium butyrate and betacellulin. mRNAs for insulin, pancreatic polypeptide, and somatostatin were also observed. Immunoreactive pancreatic polypeptide, somatostatin, and insulin were detected in sodium butyrate and betacellulin-treated HSL cells. In conclusion, HSL cells obtained from adult normal liver also have the potential to differentiate into pancreatic endocrine cells in vitro. HSL cells may be one of the potential -cell sources for cell transplant therapy for insulin-dependent diabetes.
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Keywords: Endocrine cell differentiation; Hepatic stem-like cell; Insulin; Liver epithelial cell

Document Type: Research Article

Affiliations: 1: Institute for Molecular and Cellular Regulation, Gunma University, Maebashi 371-8512, Japan 2: Department of Biochemistry, Akita University School of Medicine, Akita 010-8543, Japan 3: Department of Bioscience and Biotechnology, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan

Publication date: 2005-09-01

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  • Cell Transplantation publishes original, peer-reviewed research and review articles on the subject of cell transplantation and its application to human diseases. To ensure high-quality contributions from all areas of transplantation, separate section editors and editorial boards have been established. Articles deal with a wide range of topics including physiological, medical, preclinical, tissue engineering, and device-oriented aspects of transplantation of nervous system, endocrine, growth factor-secreting, bone marrow, epithelial, endothelial, and genetically engineered cells, among others. Basic clinical studies and immunological research papers are also featured. To provide complete coverage of this revolutionary field, Cell Transplantation will report on relevant technological advances, and ethical and regulatory considerations of cell transplants. Cell Transplantation is now an Open Access journal starting with volume 18 in 2009, and therefore there will be an inexpensive publication charge, which is dependent on the number of pages, in addition to the charge for color figures. This will allow work to be disseminated to a wider audience and also entitle the corresponding author to a free PDF, as well as prepublication of an unedited version of the manuscript.

    Cell Transplantation is now being published by SAGE. Please visit their website for the most recent issues.

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