A spatial and temporal transcriptomic atlas of mouse intestinal regeneration in the jejunum.

A spatial transcriptomics atlas reveals hypertranscription and distinct regenerative cell populations during mouse jejunum repair after radiation injury.

• Why it matters: Understanding the detailed spatial and temporal gene expression dynamics of intestinal regeneration can inform therapeutic strategies for inflammatory bowel diseases and gastrointestinal pathologies.
• What they did: The study used spatial transcriptomics to analyze 16,921 genes across 23 mouse jejunum samples at 2-µm resolution over six days post-irradiation, identifying unique transcriptional patterns and niche signals.
• The result: Findings include spatially restricted interferon-target gene activation, altered differentiation trajectories, two crypt regenerative cell populations, and evidence of hypertranscription extending to human Crohn's disease, advancing knowledge of intestinal repair mechanisms.