Converting human pluripotent stem cells into beta-cells: recent advances and future challenges.

Area of Science:

• Stem cell biology
• Endocrinology
• Regenerative medicine

Background:

• Pluripotent stem cells (PSCs) offer a promising source for generating insulin-producing beta-cells for diabetes mellitus therapy.
• Understanding human embryonic endocrine pancreas development is crucial for guiding PSC differentiation into functional beta-cells.

Purpose of the Study:

• To review recent progress in deriving beta-cells from PSCs.
• To highlight the role of developmental biology in PSC differentiation protocols.
• To outline remaining challenges for clinical application of PSC-derived beta-cells.

Main Methods:

• Review of current literature on PSC differentiation protocols for beta-cell generation.
• Emphasis on methods mimicking embryonic endocrine pancreas development.
• Investigation of small molecules for directing endoderm and pancreatic lineage differentiation.

Main Results:

• Protocols closely mimicking embryonic development yield the most successful glucose-responsive beta-like cells.
• Recent advancements have led to more functional beta-like cells compared to earlier methods.
• Small molecules are being utilized to enhance differentiation efficiency into pancreatic lineages.

Conclusions:

• Generating functional beta-cells from human PSCs is increasingly achievable.
• Key challenges include poorly understood signaling pathways in beta-cell development.
• Obstacles to clinical translation include scalable and safe differentiation, immune rejection prevention, and tumorigenesis risk mitigation.