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Loss of IDO1 Expression From Human Pancreatic ?-Cells Precedes Their Destruction During the Development of Type 1 Diabetes.


ABSTRACT: Indoleamine 2,3 dioxygenase-1 (IDO1) is a powerful immunoregulatory enzyme that is deficient in patients with type 1 diabetes (T1D). In this study, we present the first systematic evaluation of IDO1 expression and localization in human pancreatic tissue. Although IDO1 was constitutively expressed in ?-cells from donors without diabetes, less IDO1 was expressed in insulin-containing islets from double autoantibody-positive donors and patients with recent-onset T1D, although it was virtually absent in insulin-deficient islets from donors with T1D. Scatter plot analysis suggested that IDO1 decay occurred in individuals with multiple autoantibodies, prior to ?-cell demise. IDO1 impairment might therefore contribute to ?-cell demise and could potentially emerge as a promising therapeutic target.

SUBMITTER: Anquetil F 

PROVIDER: S-EPMC6110313 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Loss of IDO1 Expression From Human Pancreatic β-Cells Precedes Their Destruction During the Development of Type 1 Diabetes.

Anquetil Florence F   Mondanelli Giada G   Gonzalez Nathaly N   Rodriguez Calvo Teresa T   Zapardiel Gonzalo Jose J   Krogvold Lars L   Dahl-Jørgensen Knut K   Van den Eynde Benoit B   Orabona Ciriana C   Grohmann Ursula U   von Herrath Matthias G MG  

Diabetes 20180626 9


Indoleamine 2,3 dioxygenase-1 (IDO1) is a powerful immunoregulatory enzyme that is deficient in patients with type 1 diabetes (T1D). In this study, we present the first systematic evaluation of IDO1 expression and localization in human pancreatic tissue. Although IDO1 was constitutively expressed in β-cells from donors without diabetes, less IDO1 was expressed in insulin-containing islets from double autoantibody-positive donors and patients with recent-onset T1D, although it was virtually absen  ...[more]

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