Dynamic fibroblast-immune interactions shape recovery after brain injury [snRNASeq_Timecourse]

Fibroblasts and immune cells coordinate tissue regeneration and necessary scarring after injury. In the brain, fibroblasts are border-enriched cells whose dynamic molecular states and immune interactions after injury remain unclear. We used single nuclear RNA sequencing at multiple timepoints to profile stromal and immune responses to sterile (photothrombotic, PT) injury. We find that early pro-fibrotic myofibroblasts transition into several states, including meningeal and lymphocyte-interactive fibroblasts.