Single-cell atlas reveals how spinal neurons help coordinate walking and other rhythmic movements
Scientists at St. Jude Children's Research Hospital created a single-cell atlas of a key class of spinal neurons involved in motor coordination. From that resource, they identified a small subgroup of interneurons associated with the speed of rhythmic movements such as walking. The findings, which have implications for understanding spinal cord function and recovery from injury, are published in…
Scientists at St. Jude Children's Research Hospital have created a single-cell atlas of a specific type of spinal neuron called V1 interneurons, which are crucial for motor coordination and rhythmic movements like walking. By analyzing gene expression in these cells from a mouse model, researchers identified distinct subgroups within V1 interneurons and developed an online database for further study.
One particular subgroup, V1Pou6f2, was found to be responsible for regulating the speed of rhythmic movements, while leaving flexion and extension patterns unaffected. This discovery suggests that V1Pou6f2 plays a specialized role in controlling the pace of movement, separate from its influence on the flexing and extending of limbs.
The findings, published in Nature Communications, offer new insights into how spinal cord circuits generate rhythmic behaviors and may contribute to understanding spinal cord function and recovery from injury.
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