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Development of human insulin-producing cells for cell therapy of diabetes
1Diabetes Center, University of California, San Francisco, California 94143, USA.
Abstract:
Diabetes mellitus is characterized by the loss of insulin-producing beta cells. While conventional treatment results in severe long-term complications, cell replacement therapy is a promising approach for the cure of this disease. However, its application is severally limited by the shortage of donor tissue. Hence, great research efforts concentrate on the development of an abundant cell source of functional beta-like cells, by pursuing three main strategies: Expansion of human donor beta cells in vitro, reprogramming of other cell types, and directed differentiation of pluripotent stem cells, both embryonic and patient-derived. The goal of all these approaches has been the generation of cells with properties that closely resemble the beta-cell phenotype, in particular production and storage of adequate amounts of mature insulin, and its regulated release in response to physiological signals. Here we review recent progress in all three approaches and discuss their advantages as well as remaining challenges.
Insights
Researchers are developing new ways to create insulin-producing beta cells for diabetes treatment. These strategies aim to overcome donor tissue shortages and improve cell replacement therapy for a potential cure.
Area of Science:
- Endocrinology
- Regenerative Medicine
- Cell Biology
Background:
- Diabetes mellitus involves the loss of insulin-producing beta cells, leading to complications with conventional treatments.
- Cell replacement therapy offers a potential cure but is limited by donor tissue scarcity.
- Developing abundant, functional beta-like cells is crucial for effective diabetes treatment.
Purpose of the Study:
- To review recent advancements in generating functional beta-like cells for diabetes treatment.
- To discuss the advantages and challenges of current cell generation strategies.
- To highlight progress towards overcoming donor tissue limitations in cell replacement therapy.
Main Methods:
- Reviewing in vitro expansion of human donor beta cells.
- Examining reprogramming of non-beta cells into beta-like cells.
- Analyzing directed differentiation of pluripotent stem cells (embryonic and patient-derived).
Main Results:
- Progress has been made in generating cells that mimic beta-cell phenotype, including insulin production, storage, and regulated release.
- Each strategy (expansion, reprogramming, differentiation) shows promise but faces unique hurdles.
- The goal is to create cells with properties closely resembling native beta cells.
Conclusions:
- Multiple strategies are advancing the generation of functional beta-like cells.
- Overcoming challenges in cell expansion, reprogramming, and differentiation is key.
- These efforts aim to provide an abundant cell source for diabetes cure via cell replacement therapy.
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