Project description: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 after photothrombotic (PT) injury to test the role of TGFb in regulating fibroblast and macrophage responses to brain injury. We find that inhibition of fibroblast TGFb signaling, or of TGFb activation, impairs profibrotic fibroblast (and macrophage) expansion and function.
Project description: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 21 days post photothrombotic (PT) injury to test the role of fibroblast-derived CXCL12 in regulating local immunity after brain injury. We find that loss of fibroblast CXCL12 causes dysregulated immune tone with elevated IFNg signaling.
Project description: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 spatial transcriptomics (10X Visium) to spatiotemporally profile CNS wound healing responses, including stromal and immune responses, after photothrombotic (PT) injury.
Project description: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.