Scientists Succeed in Giving “Lab-Grown Brains” a Sense of Place

Researchers at the University of California have made a new breakthrough in the study of how the human brain develops, successfully guiding human brain tissue grown in the laboratory to acquire a spatial identity that mimics the way different regions of the cerebral cortex are organized during the earliest stages of development.

This achievement is considered an important advance in brain research, as it allows scientists to model more accurately the processes that take place before birth.

The research team developed human cortical organoids, small three-dimensional tissues produced from human stem cells that replicate some characteristics of the developing cerebral cortex. Scientists were able to guide these organoids to adopt features associated with different cortical regions, particularly the anterior and posterior areas, rather than developing randomly, as often occurs in traditional models.

This spatial organization is a fundamental part of brain development. During the early stages, nerve cells begin responding to chemical signals that help them determine their positions and form specialized regions. These regions later perform different functions, including movement, vision, language, memory, and complex thinking. Researchers believe that understanding this mechanism could pave the way for more precise studies of disorders that affect brain development.

The findings were published in the journal Cell Stem Cell. Lead researcher Momoko Watanabe explained that introducing regional identity into brain organoid models could allow scientists to explore new questions about brain development and related diseases.

Researchers hope that these more organized models will bring scientists closer to understanding how the human brain builds its complex structure during the earliest stages of development.