MAPK13 controls structural remodeling and disease after epithelial injury

MAPK13 regulates epithelial stem cell-driven remodeling and disease, with knockout mice showing protection against hyperplasia and immune activation after injury.

• Why it matters: Understanding molecular controls of epithelial repair is crucial because improper healing can lead to long-term diseases like asthma and COPD, yet the specific pathways involved are unclear.
• What they did: Researchers used gene-knockout mice and cell models to study MAPK13's role, observing that its deficiency reduces basal-ESC growth and hyperplasia, and analyzing human lung tissue for MAPK13 activation in airway disease.
• The result: Findings position MAPK13 as a key regulator of structural remodeling, suggesting that targeting MAPK13 could serve as a disease-modifying approach for airway diseases involving epithelial injury.