This thesis underscores the high importance of Notch signaling in the development of pancreas and liver as well as in tumorigenesis of pancreas and skin. Pancreas-specific ablation of Notch signaling impairs exocrine cell expansion and leads to premature differentiation of progenitor into endocrine cells. In addition, Notch was found to play an essential role in pancreas recovery after acute pancreatitis. Also, Notch is critical for intrahepatic bile duct formation during liver maturation. Finally, the thesis marks the prominence of the Notch pathway in two highly malignant (pancreatic cancer) and frequent (skin cancer) neoplasias. Notch1 but not Notch2 alters hair follicle development and functions as a tumor suppressor in the epidermis by modulating β-catenin and p21 signaling. In contrast the pancreatic cancer mouse model revealed that Notch2 through direct activation of Myc signaling stimulates the early development of the disease.
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This thesis underscores the high importance of Notch signaling in the development of pancreas and liver as well as in tumorigenesis of pancreas and skin. Pancreas-specific ablation of Notch signaling impairs exocrine cell expansion and leads to premature differentiation of progenitor into endocrine cells. In addition, Notch was found to play an essential role in pancreas recovery after acute pancreatitis. Also, Notch is critical for intrahepatic bile duct formation during liver maturation. Final...
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