Overview
- Northwestern researchers engineered millimeter-scale spinal cord organoids from induced pluripotent stem cells that include neurons, astrocytes and, for the first time, microglia.
- Two injury types—scalpel laceration and compressive contusion—produced cell death, inflammation and glial scarring that closely mirrored human pathology.
- Applying the supramolecular peptide gel spurred robust neurite outgrowth, organized neuronal growth and sharply reduced scar-like tissue in the injured organoids.
- The peer-reviewed study, published Feb. 11, 2026 in Nature Biomedical Engineering, echoes prior mouse results in which a single post-injury dose restored walking.
- The therapeutic platform recently gained FDA Orphan Drug Designation, with researchers pursuing chronic-injury and vascularized organoid models as next steps toward translation.