Inflammation-Induced Claudin-2 Up-Regulation Limits Pancreatitis Development by Enhancing Pancreatic Ductal Transport.

Up-regulation of CLDN2 in human and mouse pancreatitis models limits disease severity by promoting pancreatic ductal fluid transport.

• Why it matters: Pancreatitis risk is linked to genetic factors like CLDN2 polymorphisms, but its protective role remains unclear, highlighting a need to understand how CLDN2 influences disease progression.
• What they did: Researchers used human tissue, mouse models, organoids, and isolated ducts to assess CLDN2 expression, regulation by cytokines, and its impact on inflammation, fibrosis, and fluid transport, including knockout studies.
• The result: Absence of CLDN2 worsened pancreatitis severity, and its up-regulation was essential for fluid secretion, suggesting that modulating CLDN2 could be a therapeutic strategy to limit pancreatitis development.