|Partner Organization||Partner Country|
|Farncombe Family Digestive Health Research Institute at McMaster University||Canada|
|French National Institute for Agricultural Research (INRA)||France|
|University Wageningen||The Netherlands|
Aims: The aryl hydrocarbon receptor (AhR) is a transcription factor recently shown to be crucial for the maintenance of intestinal homeostasis, however its precise gut luminal activators and functional consequences are unknown. Activators originate from (i) the diet, such as indole-3-carbinol from cruciferous vegetables, (ii) the microbiota, (iii) lactic acid bacteria, used in food or as probiotics, that produce AhR agonists from catabolism of tryptophan. The overall aim of our project is to assess the effects of AhR activation by microbiota-derived components on intestinal immunity and physiology. We will specifically determine the dietary-microbiota interactions that lead to AhR activation and identify AhR-activating microorganisms, or their metabolites, with potential health benefits.
Achievements: Before starting the project, a consortium agreement has been signed between all the academic and industrial partners on november 2016. Three post docs have been hired for the project. The screening of probiotic strains for their ability to produce AhR agonists is completed and 3 candidates have been selected for in vivo studies in 3 pathological models. The clinical trial design has been approved by regulatory agencies in Canada. The study started on October 2017 and 10 participants have already been recruited.
Expected Impact: We expect to better understand the host-microbiota crosstalk in health and disease and identify new dietary strategies to modulate AhR signalling to maintain gut health and alleviate intestinal inflammation
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