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| Content Provider | Springer Nature Link |
|---|---|
| Author | Leite, Adriana Ribeiro Corrêa Giannella, Maria Lúcia Dagli, Maria Lúcia Zaidan Fortes, Maria Angela Zanela Vegas, Vanina Monique Tucci Giannella Neto, Daniel |
| Copyright Year | 2006 |
| Abstract | Hepatic oval cells (OC) are considered to be facultative liver stem cells and, because they may undergo differentiation into a variety of cell lineages, they might have the potential to be used in cellular therapy. Signals delivered by extracellular matrix (ECM) proteins take part in cellular differentiation in cooperation with signals from growth factors; indeed, some ECM proteins, such as laminin (LAM) and fibronectin (FN), have been shown to contribute to β-cell differentiation and islet development, respectively. Since no previous studies have investigated the effect of ECM proteins on the expression of islet cell markers by cultured OC, the purpose of the present study was to evaluate whether FN and LAM modulate the expression of genes related to the endocrine pancreas in these liver cells. OC proliferation was induced in Wistar rats by prolonged treatment with 2-acetoaminofluorene/allyl alcohol and confirmed by reverse transcription/polymerase chain reaction and hepatic immunocytochemical and histopathological analyses. OC isolation was performed by Ficoll gradient and magnetic-activated cell sorting. OC were cultured for 1 and 2 months under several conditions with specific growth factors, over a FN or LAM substrate or in high glucose, nicotinamide and fetal calf serum. OC cultured on FN substrate expressed Pdx-1, Pax-6, insulin 2 and glucagon. LAM also induced the expression of Pdx-1, insulin 1 and insulin 2, glucagon, somatostatin and GLUT-2. Our results suggest that these ECM proteins can be used in protocols of OC transdifferentiation aimed at reducing the period necessary for complete transdifferentiation. |
| Starting Page | 529 |
| Ending Page | 537 |
| Page Count | 9 |
| File Format | |
| ISSN | 0302766X |
| Journal | Cell and Tissue Research |
| Volume Number | 327 |
| Issue Number | 3 |
| e-ISSN | 14320878 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2006-12-06 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Hepatic oval cell Differentiation Fibronectin Laminin Endocrine pancreas Rat (Wistar, male) Molecular Medicine Proteomics Human Genetics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Histology Pathology and Forensic Medicine |
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