Animal-Free Method to Grow Human Brain Organoids Developed

Scientists at the University of Michigan have developed a novel technique to produce animal-free human brain organoids that could improve the way neurodegenerative conditions are studied and, eventually, treated. The method involves engineering an extracellular matrix for brain organoids using human fibrillar fibronectin, resulting in improved neurogenesis and a more accurate representation of the brain's structure.

The research, published in Annals of Clinical and Translational Neurology, marks an advancement in understanding neurodevelopmental biology by eliminating animal components from human brain organoids. The new approach allows for better translation of research from animal models to clinical applications, bridging the gap between the laboratory and the clinic, according to the team.

The engineered human brain organoids were cultivated using a highly porous polymer scaffold and human fibronectin as the foundational extracellular matrix. The organoids thrived for months, demonstrating the potential of this animal-free method.

Proteomics analysis revealed that the team’s brain organoids developed cerebral spinal fluid that closely resembled human adult cerebrospinal fluid, surpassing the results of previous studies that used organoids derived from traditional methods. This achievement provides a more natural and accurate environment for studying brain development and diseases.

The success of producing xenogeneic-free human brain organoids opens up new possibilities for personalized medicine. Researchers can reprogram stem cells from patients with neurodegenerative diseases like ALS or Alzheimer's to create customized mini-brains. These patient-specific organoids serve as models for studying disease progression and testing potential treatments, offering personalized insights into conditions that exhibit significant variability among individuals.