Unknown

Dataset Information

0

Gadd45β promotes regeneration after injury through TGFβ-dependent restitution in experimental colitis.


ABSTRACT: Dysregulated immune responses and impaired function in intestinal epithelial cells contribute to the pathogenesis of inflammatory bowel disease (IBD). Growth arrest and DNA damage-inducible 45 beta (Gadd45β) has been implicated in the pathogenesis of various inflammatory symptoms. However, the role of Gadd45β in IBD is completely unknown. This study aimed to evaluate the role of Gadd45β in IBD. Gadd45β-KO mice exhibited drastically greater susceptibility to dextran sulfate sodium (DSS)-induced colitis and mortality than C57BL/6J mice. Bone marrow transplantation experiments revealed that Gadd45β functions predominantly in the intestinal epithelium and is critical during the recovery phase. Gadd45β regulates the TGF-β signaling pathway in colon tissue and epithelial cells by inhibiting Smurf-mediated degradation of TGF-β receptor type 1 via competitive binding to the N-terminal domain of Smad7. Furthermore, these results indicate that the Gadd45β-regulated TGF-β signaling pathway is involved in wound healing by enhancing epithelial restitution. These results expand the current understanding of the function of Gadd45β and its therapeutic potential in ulcerative colitis.

SUBMITTER: Hwang JH 

PROVIDER: S-EPMC6821912 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

altmetric image

Publications

Gadd45β promotes regeneration after injury through TGFβ-dependent restitution in experimental colitis.

Hwang Jung Hwan JH   Kim Tae-Hwan TH   Kim Yong-Hoon YH   Noh Jung-Ran JR   Choi Dong-Hee DH   Kim Kyoung-Shim KS   Lee Eun-Young EY   Kim Byoung-Chan BC   Kim Myung Hee MH   Kim Ho H   Lee Tae Geol TG   Lee Jong-Soo JS   Lee Chul-Ho CH  

Experimental & molecular medicine 20191030 10


Dysregulated immune responses and impaired function in intestinal epithelial cells contribute to the pathogenesis of inflammatory bowel disease (IBD). Growth arrest and DNA damage-inducible 45 beta (Gadd45β) has been implicated in the pathogenesis of various inflammatory symptoms. However, the role of Gadd45β in IBD is completely unknown. This study aimed to evaluate the role of Gadd45β in IBD. Gadd45β-KO mice exhibited drastically greater susceptibility to dextran sulfate sodium (DSS)-induced c  ...[more]

Similar Datasets

| S-EPMC5835490 | biostudies-literature
| S-EPMC8647134 | biostudies-literature
| S-EPMC6748088 | biostudies-literature
| S-EPMC7953268 | biostudies-literature
| S-EPMC8375080 | biostudies-literature
| S-EPMC7595581 | biostudies-literature
| S-EPMC2533811 | biostudies-literature
| S-EPMC8732271 | biostudies-literature
| S-EPMC8211466 | biostudies-literature
| S-EPMC6349217 | biostudies-literature