What question did this study set out to answer?

To elucidate the molecular mechanism by which aberrant cortical actin remodeling impairs intestinal epithelial barrier function in inflammatory bowel disease.

February 8, 2023Nature CommunicationsOpen Access

TRIM40 is a pathogenic driver of inflammatory bowel disease subverting intestinal barrier integrity

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Authors

SKSu‐Jin KangDongduk Women's University JKJae Kyung KimDankook University APAreum ParkKorea Research Institute of Chemical Technology

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Implication

Experimental study reveals TRIM40 drives intestinal barrier breakdown in inflammatory bowel disease, highlighting a therapeutic target for chronic gut inflammation.

Key Points

To elucidate the molecular mechanism by which aberrant cortical actin remodeling impairs intestinal epithelial barrier function in inflammatory bowel disease.
Analyzed TRIM40 expression levels in intestinal tissue from patients with inflammatory bowel disease and healthy controls.
Characterized the E3 ligase activity of TRIM40 on ROCK1 degradation and actin remodeling using wild-type and domain-deletion mutants.
Tested resistance to dextran sulfate sodium (DSS)-induced colitis in Trim40-deficient male mice.
TRIM40 is aberrantly upregulated in a subset of IBD patients and acts as an E3 ligase that targets ROCK1 for degradation, suppressing downstream phosphorylation needed for cortical actin stabilization.
TRIM40 mutants missing the RING, B-box, or C-terminal domains fail to disrupt cortical actin, and Trim40 knockout male mice exhibit strong protection against DSS-induced colitis.

Cite This Study

Kang et al. (2023) studied this question.

synapsesocial.com/papers/6a93feb3f6576007e0f63b50 https://doi.org/10.1038/s41467-023-36424-0

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Implication

Experimental study reveals TRIM40 drives intestinal barrier breakdown in inflammatory bowel disease, highlighting a therapeutic target for chronic gut inflammation.

TRIM40 is a pathogenic driver of inflammatory bowel disease subverting intestinal barrier integrity

Discussion

Member takes

Implication

Key Points

Cite This Study

TRIM40 is a pathogenic driver of inflammatory bowel disease subverting intestinal barrier integrity

Discussion

Member takes

Implication

Key Points

Cite This Study

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