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Generation of Beta Cells from Acinar Cells

  • Luc Baeyens
  • Ilse Rooman
  • Luc Bouwens
Chapter
Part of the Stem Cell Biology and Regenerative Medicine book series (STEMCELL)

Abstract

It is becoming increasingly clear that differentiated adult somatic cells retain the capacity to be reprogrammed into other cell types. In the case of the pancreas, a switch from an acinar to a β-cell phenotype in vitro can be induced by soluble agents, such as growth factors and cytokines. We found that the combination of epidermal growth factor and leukemia inhibitory factor stimulated the transdifferentiation of rat acinar cells into β cells in culture. The transdifferentiation, or cellular reprogramming, appears to recapitulate embryonic events, such as expression of the transcription factor NGN3, which is characteristic of pancreas proendocrine progenitor cells. The NOTCH-signaling pathway, whose activity is normally restricted to embryonic pancreas development, is also reactivated during transdifferentiation. Inhibition of this pathway in the same experimental model leads to further stimulation of β-cell neogenesis from adult acinar cells. Engraftment of the acinar-derived β cells results in correction of glycemia in alloxan-diabetic mice. The phenotype of the transdifferentiated cells is stable in vivo, resulting in normal and safe function following transplantation. This approach opens ways for β-cell replacement therapy by transplantation or regeneration.

Keywords

Acinar Cell Leukemia Inhibitory Factor Duct Cell Pancreatic Injury Pancreatic Progenitor Cell 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Humana Press, a part of Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Cell Differentiation Unit, Diabetes Research CenterVrije Universiteit BrusselBrusselsBelgium

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