Design, synthesis and study of inhibitors of tryptophan 2,3-dioxygenase (TDO), a promising target for cancer therapy

Laurence Moineaux, Caroline Charlier, Eduard Dolusic, Pierre Larrieu, Luc Pilotte, Didier Colau, Vincent Stroobant, Moreno Galleni, Bernard Masereel, Benoît Van den Eynde, Johan Wouters (Promoteur), Raphaël Frédérick

Résultats de recherche: Contribution à un événement scientifique (non publié)Poster

Résumé

Immunotherapy is a promising novel strategy for cancer therapy. It consists of the therapeutic vaccination of cancer patients to stimulate their (natural) immune system against cancer cells. This approach, however, showed limited efficacy in vivo. Cancer cells are actually able to develop enzymatic mechanisms allowing tumours to resist or escape the immune rejection. Among the enzymes involved, the indoleamine 2,3-dioxygenases IDO and TDO represents potential actors. These enzymes catalyse the rapid degradation of tryptophan (Trp) through the kynurenine (KYN) pathway to form quinolinic acid (QA). This results in a local Trp depletion that severely affects the proliferation of T lymphocytes and is thereby profoundly immunosuppressive. This project was funded in part by Télévie (FNRS grant 7.4.543.07) and led in collaboration with the team of Pr Benoit Van Den Eynde (LICR, UCL) and Pr Moreno Galleni (CIP, ULG) aims at developing novel TDO inhibitors using a rational approach. These inhibitors will allow a better understanding of the role of TDO in the phenomenon of immunosuppression, especially in cancerous tumors. A series of vinyl-1H-indoles has been synthesized and their inhibitory potential has been evaluated on TDO of Ralstonia metallidurans (rmTDO) overexpressed in E.coli and purified by affinity chromatography. Crystallographic structure of some analogues was obtained and used as starting point for a docking study of these inhibitors in a model of humanized rmTDO. These data allowbetter understanding of how this family of inhibitors interact with TDO. This process is presented on this poster.
langue originaleAnglais
PagesAbstracts, école doctorale SFMBBM, Liège, Belgium, 10 December 2010
Nombre de pages1
Etat de la publicationPublié - 2010
Evénementécole doctorale Structure et Fonction des Macromolécules Biologiques, Bioinformatique et Modélisation (SFMBBM) - Liège, Belgique
Durée: 10 oct. 2010 → …

Réunion

Réunionécole doctorale Structure et Fonction des Macromolécules Biologiques, Bioinformatique et Modélisation (SFMBBM)
PaysBelgique
La villeLiège
période10/10/10 → …

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Contient cette citation

Moineaux, L., Charlier, C., Dolusic, E., Larrieu, P., Pilotte, L., Colau, D., Stroobant, V., Galleni, M., Masereel, B., Van den Eynde, B., Wouters, J., & Frédérick, R. (2010). Design, synthesis and study of inhibitors of tryptophan 2,3-dioxygenase (TDO), a promising target for cancer therapy. Abstracts, école doctorale SFMBBM, Liège, Belgium, 10 December 2010. Poster présenté � école doctorale Structure et Fonction des Macromolécules Biologiques, Bioinformatique et Modélisation (SFMBBM), Liège, Belgique.