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New research reveals the brain is actually two distinct organs evolved independently
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New research led by Stanford Medicine reveals that what we call the brain is two distinct organs that evolved independently over hundreds of millions of years.
This discovery changes the understanding of brain structure, potentially impacting how researchers approach brain-related diseases. It could explain previous challenges in generating specific brain cells in the laboratory, which hampers research into conditions like spinal muscular atrophy and amyotrophic lateral sclerosis.
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The human brain consists of two ancient nervous systems: a primitive part and a more advanced part.
Researchers successfully coaxed human pluripotent stem cells to become functional hindbrain motor neurons for the first time.
The two-origin brain pattern has been observed in other species, suggesting a common evolutionary process.
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The recent findings from Stanford Medicine indicate that the human brain is composed of two separate organs that have evolved independently, which alters the conventional understanding of brain anatomy. This dual structure includes a more primitive region responsible for basic bodily functions and a more complex region that supports higher cognitive abilities.
The implications of this research extend to the field of regenerative medicine, particularly in creating functional hindbrain motor neurons from pluripotent stem cells. This breakthrough could facilitate advancements in treating diseases that affect the brain stem, which have historically been difficult to study due to the challenges in generating specific neural cell types.
By recognizing that the hindbrain and cerebral regions develop along separate pathways, scientists can refine their approaches to stem cell therapy and disease modeling. This understanding could lead to more targeted treatments for conditions such as spinal muscular atrophy and amyotrophic lateral sclerosis, which affect motor function and have proven difficult to address with existing methodologies.
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