Inventors:
Joel F. Habener - Newton Centre MA, US
Henryk Zulewski - Basel, CH
Elizabeth J. Abraham - Quincy MA, US
Mario Vallejo - Madrid, ES
Denise L. Faustman - Weston MA, US
Melissa K. Thomas - Boston MA, US
Assignee:
The General Hospital Corporation - Boston MA
International Classification:
A61K035/12, C12N005/00
US Classification:
424 937, 424 931, 424520, 435 11, 435 4, 435325
Abstract:
Methods and compositions are described for the treatment of type I insulin-dependent diabetes mellitus and other conditions using newly identified stem cells that are capable of differentiation into a variety of pancreatic islet cells, including insulin-producing beta cells, as well as hepatocytes. Nestin has been identified as a molecular marker for pancreatic stem cells, while cytokeratin-19 serves as a marker for a distinct class of islet ductal cells. Methods are described whereby nestin-positive stem cells can be isolated from pancreatic islets and cultured to obtain further stem cells or pseudo-islet like structures. Methods for ex vivo differentiation of the pancreatic stem cells are disclosed. Methods are described whereby pancreatic stem cells can be isolated, expanded, and transplanted into a patient in need thereof, either allogeneically, isogeneically or xenogenically, to provide replacement for lost or damaged insulin-secreting cells or other cells.