National Research Council of Italy

Institute of Biosciences and BioResources

DISBA logo CNR logo

IBBR Webinars


Indoleamine 2,3-dioxygenase 1 (IDO1): an eclectic immunoregulatory enzyme

Maria Teresa Pallotta 
University of Perugia - Italy

October 08, 2021 (11:30-12:30)
Webinar Link:

Abstract: Indoleamine 2,3-dioxygenase 1 (IDO1) catalyzes the initial rate-limiting step in the degradation of the essential amino acid tryptophan along the kynurenine pathway. When discovered more than 50 years ago, IDO1 was thought to be an effector molecule capable of mediating a survival strategy based on the deprivation of bacteria and tumor cells of the essential amino acid tryptophan. After 1998, when tryptophan catabolism was discovered to be crucially involved in the maintenance of maternal T cell tolerance, IDO1 has become the focus of several researchers around the world. Indeed, IDO1 is now considered as an authentic immune regulator not only in pregnancy, but also in autoimmune diseases, chronic inflammation, and tumor immunity. However, in the last years, a bulk of new information - including structural, biologic, and functional evidence - on IDO1 has come to light. For instance, we now know that IDO1 has a peculiar conformational plasticity and, in addition to a complex and highly regulated catalytic activity, is capable of performing a non-enzymic function that reprograms the expression profile of immune cells towards a highly immunoregulatory phenotype

Author's Info:

Link to video:

Webinar Organization Group

Istituto di Bioscienze e Biorisorse (IBBR/CNR)
Via G. Amendola 165/A, I-70126 Bari (Italy)
Copyright © 2012-2023. All Rights Reserved.