Self-organizing human dual neural organoids model regional disease defects and teratogenicity.

Human peripheral-central dual neural organoids (hPCOs) reveal bidirectional Wnt signaling roles in neurodevelopment, modeling nociceptor defects and teratogenic risks.

• Why it matters: Understanding human neurodevelopmental processes, especially the formation of peripheral and central nervous system structures, remains limited due to current in vitro model constraints. Addressing this gap can improve insights into disease mechanisms and drug testing.
• What they did: Researchers developed hPCOs, a self-organizing organoid system that models the co-development of peripheral sensory ganglia and dorsal spinal cord, and used image analysis to assess teratogenic risks.
• The result: The study uncovers an unexpected bidirectional role of Wnt signaling in fate determination, demonstrates nociceptor defects in human congenital insensitivity to pain, and provides a platform for investigating disease mechanisms and drug discovery.