Title: Modeling Pancreatic Adenocarcinoma, Cystic Fibrosis and pancreatitis Using Pluripotent Stem Cell-Derived Human Pancreatic Ductal Epithelial Cells

Biography:

Senem Simsek works at Weill Cornell Medical College, USA

Abstract

The pancreatic duct system contains a number of epithelial cell types. These are the minor cells of total pancreas comprising 10% of all other pancreatic cells. On the other hands, they are exclusively involved in a number of very serious pathological diseases including lethal pancreatic adenocarcinoma, cystic fibrosis and pancreatitis. We established an efficient strategy to direct human pluripotent stem cells, including human embryonic stem cells (hESCs) and an induced pluripotent stem cell (iPSC) line derived from patients with cystic fibrosis, to differentiate into pancreatic ductal epithelial cells (PDECs). After purification, more than 98% of hESC-derived PDECs expressed functional cystic fibrosis transmembrane conductance regulator (CFTR) protein. In addition, iPSC lines were derived from a patient with CF carrying compound frameshift and mRNA splicing mutations and were differentiated to PDECs. PDECs derived from Weill Cornell cystic fibrosis (WCCF)-iPSCs showed defective expression of mature CFTR protein and impaired chloride ion channel activity, recapitulating functional defects of patients with CF at the cellular level. These studies provide a new methodology to derive pure PDECs expressing CFTR and establish a "disease in a dish" platform to identify drug candidates to rescue the pancreatic defects of patients with CF.  This is the landmark achievement towards the cutting edge modeling of pancreatic epithelial cell originated lethal diseases with more accuracy and faster validation.