Periodic Reporting for period 3 - CrUCCial (Novel diagnostic and therapeutic approach to inflammatory bowel disease based on functional characterization of patients: the CrUCCial index)
Periodo di rendicontazione: 2019-09-01 al 2021-02-28
For the functional readouts, we developed and validated a patient-derived ex-vivo intestinal epithelial cell culture system which can be used to study functional pathways and we have shown that patients with more endoplasmic reticulum (ER) stress and autophagy risk alleles have augmented epithelial ER stress responses. The primary intestinal epithelial model was further optimized in Transwell inserts in order to evaluate the barrier function. Additionally, we also generated functional readouts of intestinal permeability (using Lactulose/Mannitol and Ussing chambers). The latter techniques however proof to be challenging to transfer on a large scale basis to daily practice – instead genetics and RNA sequencing on blood and biopsies may generate (indirectly) the same information and - with translation to clinical practice in mind – we decided to replace the Ussing and urine sugar tests by RNA sequencing techniques on blood and biopsies. These techniques have been optimized in our laboratory.
In the second half of the project, we will prospectively include IBD patients in whom all the different components of the CrUCCial index will be characterized. Finally, the generated CrUCCial index will be tested for its ability to predict clinical outcomes and disease progression.