This research presents a comprehensive epigenetic and spatial atlas of the healthy adult human spinal cord, focusing on the thoracic and lumbar segments. By utilizing innovative techniques like STAB-seq and STARmap, the authors identify "masked enhancers"—regulatory elements that activate genes through histone modifications without changing physical chromatin accessibility. The study reveals that glial cell diversity and gene regulatory networks are significantly influenced by their anatomical position along the spinal cord's length. Furthermore, the findings demonstrate that cells organize into stereotyped networks that facilitate specific paracrine signaling interactions. These discoveries redefine our understanding of cellular identity and provide a molecular template for investigating neurodegenerative diseases like ALS. In summary, the work highlights how regulatory plasticity and spatial context drive the functional specialization of the central nervous system.

References:

• Kandror E K, Carriere M, Peterson A, et al. Enhancer dynamics and cellular architecture in the human spinal cord[J]. Neuron, 2026.