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- W2056005334 abstract "Objectives: Pancreatic regenerating gene I (reg I) has been implicated in cellular differentiation. Acinar cells can transdifferentiate into other pancreatic-derived cells, and we postulated that changes in intracellular levels of reg I would affect the state of differentiation. Methods: We transfected AR42J cells with a plasmid containing the entire coding sequence of reg I and isolated clones with complementary DNA in sense (SS) or antisense (AS) orientation. Levels of messenger RNA (mRNA) and protein expression were examined by Western blotting and real-time polymerase chain reaction. Results: Expression of reg I was confirmed in SS or AS clones. AR42J transfected with SS demonstrated more acinarlike phenotype, whereas those transfected with AS showed a less differentiated state. Specifically, amylase mRNA and protein levels increased in SS cells, whereas AS cells showed increased pancreatic and duodenal homeobox 1 (Pdx1) and insulin mRNAs and cytokeratin protein. Conversely, cytokeratin and Pdx1 were depressed in SS cells. Conclusions: These data demonstrate that in acinar cells, reg I overexpression is linked to acinar cell differentiation, whereas inhibition of reg I leads to β cell and possibly ductal phenotype. Reg I expression in acinar cells is important in maintaining pancreatic cell lineage, and when decreased, cells can dedifferentiate and move toward becoming other pancreatic cells." @default.
- W2056005334 created "2016-06-24" @default.
- W2056005334 creator A5005441260 @default.
- W2056005334 creator A5042098386 @default.
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- W2056005334 date "2009-07-01" @default.
- W2056005334 modified "2023-10-18" @default.
- W2056005334 title "Pancreatic Regenerating Gene I and Acinar Cell Differentiation" @default.
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- W2056005334 doi "https://doi.org/10.1097/mpa.0b013e3181a1d9f9" @default.
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