OBJECTIVES: Many efforts are spent in identifying stem cells in adult pancreas because these could provide a source of beta cells for cell-based therapy of type 1 diabetes. Prominin-1, particularly its specific glycosylation-dependent AC133 epitope, is expressed on stem/progenitor cells of various human tissues and can be used to isolate them. We, therefore, examined its expression in adult human pancreas. METHODS: To detect prominin-1 protein, monoclonal antibody CD133/1 (AC133 clone), which recognizes the AC133 epitope, and the alphahE2 antiserum, which is directed against the human prominin-1 polypeptide, were used. Prominin-1 RNA expression was analyzed by real-time polymerase chain reaction. RESULTS: We report that all duct-lining cells of the pancreas express prominin-1. Most notably, the cells that react with the alphahE2 antiserum also react with the AC133 antibody. After isolation and culture of human exocrine cells, we found a relative increase in prominin-1 expression both at protein and RNA expression level, which can be explained by an enrichment of cells with ductal phenotype in these cultures. CONCLUSIONS: Our data show that pancreatic duct cells express prominin-1 and surprisingly reveal that its particular AC133 epitope is not an exclusive stem and progenitor cell marker.
OBJECTIVES: Many efforts are spent in identifying stem cells in adult pancreas because these could provide a source of beta cells for cell-based therapy of type 1 diabetes. Prominin-1, particularly its specific glycosylation-dependent AC133 epitope, is expressed on stem/progenitor cells of various human tissues and can be used to isolate them. We, therefore, examined its expression in adult human pancreas. METHODS: To detect prominin-1 protein, monoclonal antibody CD133/1 (AC133 clone), which recognizes the AC133 epitope, and the alphahE2 antiserum, which is directed against the humanprominin-1 polypeptide, were used. Prominin-1 RNA expression was analyzed by real-time polymerase chain reaction. RESULTS: We report that all duct-lining cells of the pancreas express prominin-1. Most notably, the cells that react with the alphahE2 antiserum also react with the AC133 antibody. After isolation and culture of human exocrine cells, we found a relative increase in prominin-1 expression both at protein and RNA expression level, which can be explained by an enrichment of cells with ductal phenotype in these cultures. CONCLUSIONS: Our data show that pancreatic duct cells express prominin-1 and surprisingly reveal that its particular AC133 epitope is not an exclusive stem and progenitor cell marker.
Authors: Liang Jin; Tao Feng; Hung Ping Shih; Ricardo Zerda; Angela Luo; Jasper Hsu; Alborz Mahdavi; Maike Sander; David A Tirrell; Arthur D Riggs; Hsun Teresa Ku Journal: Proc Natl Acad Sci U S A Date: 2013-02-19 Impact factor: 11.205
Authors: Cyrille Ramond; Belin Selcen Beydag-Tasöz; Ajuna Azad; Martijn van de Bunt; Maja Borup Kjær Petersen; Nicola L Beer; Nicolas Glaser; Claire Berthault; Anna L Gloyn; Mattias Hansson; Mark I McCarthy; Christian Honoré; Anne Grapin-Botton; Raphael Scharfmann Journal: Development Date: 2018-08-15 Impact factor: 6.868