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A Quantitative Assay for Insulin-expressing Colony-forming Progenitors
Published on: November 28, 2011
Development of cell markers for the identification and expansion of islet progenitor cells
You-Qing Zhang1, Nora Sarvetnick
1Department of Immunology, The Scripps Research Institute, North Torrey Pines Road, La Jolla, CA 92037, USA. yqzhang@scripps.edu
Abstract:
Diabetes 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.
Insights
Identifying specific cell markers is crucial for isolating and expanding pancreatic islet progenitor cells. This research advances potential stem cell therapies for diabetes by exploring these essential markers.
Area of Science:
- Endocrinology and Diabetes Research
- Stem Cell Biology
- Pancreatic Biology
Background:
- Diabetes mellitus stems from the loss of insulin-producing pancreatic beta cells, leading to complications despite current treatments.
- Islet transplantation offers a potential cure, but donor islet scarcity limits its application.
- Ex vivo culture and differentiation of endocrine cells are key research areas for alternative diabetes therapies.
Purpose of the Study:
- To review recent advancements in identifying cell markers for pancreatic islet progenitor cells.
- To explore the potential of these markers for isolating and characterizing stem/progenitor cells in vitro and in vivo.
- To discuss the implications for developing novel diabetes treatments.
Main Methods:
- Review of recent scientific literature on pancreas organogenesis and in vitro islet progenitor cell identification.
- Analysis of studies focusing on cell markers essential for prospective isolation and characterization.
- Exploration of factors influencing pancreatic cell fate determination.
Main Results:
- Recent studies have provided significant insights into cell markers for islet progenitor cells.
- The identification of specific markers is essential for isolating and purifying these cells.
- Understanding cell fate determination factors may enable directed differentiation into endocrine cells or pancreatic tissue.
Conclusions:
- Identifying reliable cell markers is critical for advancing stem cell-based therapies for diabetes.
- Prospective isolation and characterization of islet progenitor cells are achievable with marker identification.
- This research paves the way for potential in vitro generation of functional pancreatic cells for transplantation.
