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- Inflammatory bowel disease
- SHIP
- mucosal expression
- IBD
- gene expression
- IBD basic research
- ulcerative colitis
- Crohn's disease
- pancreatic islet cell
- pancreatic physiology
- gene regulation
We read with interest the recent paper in Gut by Kerr and colleagues1 describing a new mouse model of Crohn's disease (CD)-like ileitis caused by Src homology 2 domain-containing inositol-5′-phosphatase (SHIP) deficiency. The human SHIP protein, encoded by the INPP5D gene on chromosome 2q37.1, is an enzyme that hydrolyses the 5′-phosphate of phosphatidylinositol-(3,4,5)-trisphosphate so that it counteracts stimulatory pathways such as phosphoinositide 3-kinase. The enzyme is regulated by tyrosine phosphorylation in haematopoietic cells following activation of surface receptors for various cytokines or in response to B cell antigen receptor cross-linking or T cell activation. In previous studies, the authors showed that SHIP signalling plays …
Footnotes
Funding This work was supported by grants from the Fund for Scientific Research—Flanders (FWO-Flanders), Belgium (FWO project nr.G.0440.06 and G.0479.10). IA is a postdoctoral fellow and SV is a clinical researcher of FWO-Flanders.
Competing interests None.
Ethics approval Ethics approval was provided by the ethics committee of the Catholic University of Leuven, and the patients gave written informed consent for the use of the biopsies for the research project.
Provenance and peer review Not commissioned; externally peer reviewed.