| Transforming growth factor-β induces epithelial to mesenchymal transition and suppresses the proliferation and transdifferentiation of cultured human pancreatic duct cells. | |
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MedLine Citation:
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PMID: 21069735 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Pancreatic duct cells are considered a potential source of β-cell regeneration, and transforming growth factor-β (TGF-β) has been suggested to perform an important role in these processes, but the underlying mechanism of the signal pathways, especially in humans, remains poorly understood. To evaluate the role of TGF-β1, pancreatic duct cells were isolated from three brain-dead organ donors. Pancreatic cell clusters harvested after islet isolation were dispersed to single cells and cultured in monolayers, then treated with TGF-β1. We analyzed the characteristics of the cultured cells, the TGF-β1 intracellular signaling pathway, the proliferation, and transdifferentiation rates of the duct cells. We also evaluated the genes and protein expression patterns after TGF-β1 treatment. After TGF-β1 treatment, typical morphologic changes representative of EMT were observed and Erk1/2, JNK, and AKT phosphorylation, Ras downstream effectors, were increased. β cell-specific transcription factors including PDX-1, Beta2/NeuroD, Ist-1, and NGN3 were markedly suppressed and the rate of transdifferentiation into β cells was also suppressed. Genomic and proteomic analyses suggested that TGF-β1 induces marked changes in a variety of structural genes and proteins associated with EMT. In conclusion, TGF-β1 induces EMT in cultured human pancreatic duct cells, but suppresses its proliferation and transdifferentiation into β cells. Our results are the first report of TGF-β1 effects for EMT and ductal cell transdifferentiation and proliferation at the protein level in human pancreatic duct cells. |
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Authors:
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Jeong-Ah Shin; Oak-Kee Hong; Hye-Jung Lee; Sung-Yoon Jeon; Ji-Won Kim; Seung-Hwan Lee; Jae-Hyoung Cho; Jung-Min Lee; Yoon-Hee Choi; Sang-Ah Chang; Ho-Young Son; Joo-Han Kim; Kun-Ho Yoon |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of cellular biochemistry Volume: 112 ISSN: 1097-4644 ISO Abbreviation: J. Cell. Biochem. Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2010-12-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8205768 Medline TA: J Cell Biochem Country: United States |
Other Details:
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Languages: eng Pagination: 179-88 Citation Subset: IM |
Affiliation:
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Department of Endocrinology & Metabolism, The Catholic University of Korea, Seoul, Korea. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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