New sources of pancreatic beta-cells - PubMed (original) (raw)
Review
doi: 10.1038/nbt1115.
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- PMID: 16003374
- DOI: 10.1038/nbt1115
Review
New sources of pancreatic beta-cells
Susan Bonner-Weir et al. Nat Biotechnol. 2005 Jul.
Abstract
Two major initiatives are under way to correct the beta-cell deficit of diabetes: one would generate beta-cells ex vivo that are suitable for transplantation, and the second would stimulate regeneration of beta-cells in the pancreas. Studies of ex vivo expansion suggest that beta-cells have a potential for dedifferentiation, expansion, and redifferentiation. Work with mouse and human embryonic stem (ES) cells has not yet produced cells with the phenotype of true beta-cells, but there has been recent progress in directing ES cells to endoderm. Putative islet stem/progenitor cells have been identified in mouse pancreas, and formation of new beta-cells from duct, acinar and liver cells is an active area of investigation. Peptides, including glucagon-like peptide-1/exendin-4 and the combination of epidermal growth factor and gastrin, can stimulate regeneration of beta-cells in vivo. Recent progress in the search for new sources of beta-cells has opened promising new opportunities and spawned clinical trials.
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