• You-Qing Zhang and Nora Sarvetnick.
• Department of Immunology, The Scripps Research Institute, North Torrey Pines Road, La Jolla, CA 92037, USA. yqzhang@scripps.edu
• Diabetes Metab. Res. Rev. 2003 Sep 1; 19 (5): 363-74.

AbstractDiabetes mellitus results from the anatomical or functional loss of insulin-producing beta cells of the pancreas. Despite significant advances in current treatment, patients with diabetes still do not maintain optimal glucose levels and therefore face debilitating complications such as hypoglycemia, retinopathy or cardiovascular diseases later in life. Islet transplantation therefore holds great promise as an ultimate cure for diabetes. However, the shortage of availability of donor sources of islets for transplantation has largely hampered this therapy. In this respect, the use of alternative sources of islets such as the ex vivo culture and expansion and differentiation of functional endocrine cells for treating diabetes has been a major focus of diabetes research. The identity of the islet stem/progenitor cells has remained either elusive or at least equivocal because of the lack of cell markers for identification of these cells. Recent successes in studying the organogenesis of pancreas as well as in vitro islet progenitor cell identification studies have provided tremendous insight for the cell markers that are essential in the isolation and characterization of these cells prospectively both in vivo and in vitro. If we can identify the markers that will aid the isolation and purification of islet progenitor cells, or factors that determine pancreatic cell fate, we might be able to coerce them from turning into specific endocrine cells or pancreas in vitro. This article will focus on this subject and will review the latest achievements in the study of cell markers for islet progenitor cells.Copyright 2003 John Wiley & Sons, Ltd.

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