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FAQ: Turning Spinal Scars Toward Repair
This study identifies the c-Jun–Irf8–CD36 molecular pathway that drives fibrotic scarring after spinal cord injury. By targeting CD36 or c-Jun, researchers reduced scarring, improved vascular remodeling, and promoted motor recovery in mice, suggesting a new therapeutic approach.
The study focuses on the molecular mechanisms behind fibrotic scarring after spinal cord injury and identifies the c-Jun–Irf8–CD36 axis as a key pathway that drives scar formation.
While early scar formation stabilizes the wound, excessive fibrosis later creates a dense barrier that blocks axon regrowth and limits functional recovery.
They used single-cell RNA sequencing, spatial transcriptomics, drug intervention, tissue imaging, and behavioral testing in mouse models to map CD36 expression and its regulation.
Salvianolic acid B (a CD36 inhibitor) and T5224 (an AP-1/c-Jun inhibitor) were tested. Both reduced fibrotic scar formation, improved vascular remodeling, supported axonal regrowth, and enhanced motor recovery in mice.
The research team included scientists from the Second Affiliated Hospital of Naval Medical University, Nantong University, and other institutions in China.
The study was published in the journal Burns & Trauma on 12 March 2026.
The findings suggest that targeting the c-Jun–Irf8–CD36 pathway could lead to therapies that tune scar formation—preserving its early protective role while preventing excessive fibrosis—to improve recovery after spinal cord injury.