Scalable Hypothalamic Arcuate Neuron Differentiation from Human Pluripotent Stem Cells Suitable for Modeling...

Area of Science:

• Neuroscience
• Stem Cell Biology
• Endocrinology

Background:

• The hypothalamus, particularly the arcuate nucleus (ARC), is critical for homeostasis, regulating energy, glucose, and reproduction.
• Translational research into these neuronal populations is hampered by limited access to human models.

Purpose of the Study:

• To develop a scalable, chemically defined method for differentiating human pluripotent stem cells (hPSCs) into ARC-like neuronal subpopulations.
• To create physiologically relevant cellular models for studying metabolic and reproductive disorders.

Main Methods:

• Utilized a robotic cell culture platform for hPSC differentiation into POMC, SST, TH, and GnRH neuronal subpopulations.
• Performed transcriptomic profiling, ATAC-seq for chromatin accessibility, and molecular/cellular/functional experiments.
• Validated the model through comparison with human fetal hypothalamus and testing responses to hormonal stimuli.

Main Results:

• Successfully generated ARC-like neurons with distinct signatures from multiple hPSC lines.
• Demonstrated stepwise induction of key hypothalamic markers and enriched expression of obesity/T2D-related genes.
• Confirmed neuronal responsiveness to insulin, kisspeptin, and Exendin-4, and adaptability to glucose/insulin variations.

Conclusions:

• Established a novel, scalable, chemically defined platform for generating human ARC neurons.
• The hPSC-derived ARC neurons serve as a valuable resource for modeling metabolic and reproductive diseases.
• This model offers a promising avenue for advancing research in hypothalamic function and associated disorders.