What question did this study set out to answer?

The study investigates how Gzma activates GEF-H1 to cause intestinal barrier dysfunction during sepsis.

April 10, 2026Open Access

Mechanism of Gzma‐mediated GEF‐H1 activation in intestinal epithelial cells leading to intestinal barrier dysfunction in sepsis

Key Points

The study investigates how Gzma activates GEF-H1 to cause intestinal barrier dysfunction during sepsis.
In vivo experiments using septic mice
Knockout of GEF-H1
Treatment with Epothilone A
Analysis of survival rates and organ protection
Gzma dephosphorylates Ser886 on GEF-H1, activating the RhoA/ROCK pathway
Knockout of GEF-H1 reduces intestinal damage and increases survival in septic mice
Epothilone A restores intestinal barrier function and lowers mortality in sepsis

Abstract

Gzma induces the dephosphorylation of Ser886 on GEF-H1, activating the RhoA/ROCK pathway and disrupting the intestinal epithelial barrier. Knocking out GEF-H1 can alleviate intestinal damage, protect multiple organs, and increase the survival rate of septic mice. Epothilone A inhibits the activation of GEF-H1, thereby restoring the barrier function and reducing the mortality rate of sepsis.

Mechanism of Gzma‐mediated GEF‐H1 activation in intestinal epithelial cells leading to intestinal barrier dysfunction in sepsis

Key Points

Abstract

Cite This Study