Evidence- and consensus-based recommendations for selecting the goals for treat-to-target strategies in patients with IBD are made available. Prospective studies are needed to determine how these targets will change disease course and patients' quality of life.
K nowledge of clinically relevant targets of individual treatments is important for improving management of patients with inflammatory bowel diseases (IBD). The Selecting Therapeutic Targets in IBD (STRIDE) program was initiated by the International Organization for the Study of IBD (IOIBD) in 2013 using an evidencebased expert consensus process. It subsequently led to a *Authors share co-first authorship.
Autophagy, the degradation of cytoplasmic components, is an evolutionarily conserved homeostatic process involved in environmental adaptation, lifespan determination and tumour development. The tumor suppressor Beclin1 is part of the PI(3) kinase class III (PI(3)KC3) lipid-kinase complex that induces autophagy. The autophagic activity of the Beclin1-PI(3)KC3 complex, however, is suppressed by Bcl-2. Here, we report the identification of a novel coiled-coil UV irradiation resistance-associated gene (UVRAG) as a positive regulator of the Beclin1-PI(3)KC3 complex. UVRAG, a tumour suppressor candidate that is monoallelically mutated at high frequency in human colon cancers, associates with the Beclin1-Bcl-2-PI(3)KC3 multiprotein complex, where UVRAG and Beclin1 interdependently induce autophagy. UVRAG-mediated activation of the Beclin1-PI(3)KC3 complex promotes autophagy and also suppresses the proliferation and tumorigenicity of human colon cancer cells. These results identify UVRAG as an essential component of the Beclin1-PI(3)KC3 lipid kinase complex that is an important signalling checkpoint for autophagy and tumour-cell growth.
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