脊髓损伤
脊髓
神经科学
医学
再生(生物学)
人口
生物
细胞生物学
环境卫生
作者
Kaya J.E. Matson,Daniel E. Russ,Claudia Kathe,Isabelle Hua,Dragan Maric,Yi Ding,Jonathan Krynitsky,Randall Pursley,Anupama Sathyamurthy,Jordan W. Squair,Boaz P. Levi,Grégoire Courtine,Ariel J. Levine
标识
DOI:10.1038/s41467-022-33184-1
摘要
After spinal cord injury, tissue distal to the lesion contains undamaged cells that could support or augment recovery. Targeting these cells requires a clearer understanding of their injury responses and capacity for repair. Here, we use single nucleus RNA sequencing to profile how each cell type in the lumbar spinal cord changes after a thoracic injury in mice. We present an atlas of these dynamic responses across dozens of cell types in the acute, subacute, and chronically injured spinal cord. Using this resource, we find rare spinal neurons that express a signature of regeneration in response to injury, including a major population that represent spinocerebellar projection neurons. We characterize these cells anatomically and observed axonal sparing, outgrowth, and remodeling in the spinal cord and cerebellum. Together, this work provides a key resource for studying cellular responses to injury and uncovers the spontaneous plasticity of spinocerebellar neurons, uncovering a potential candidate for targeted therapy.
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