Title : PGE2-induced IDO1 inhibits the capacity of fully mature DCs to elicit an in vitro antileukemic immune response.

Pub. Date : 2015

PMID : 25815345






6 Functional Relationships(s)
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1 PGE2-induced IDO1 inhibits the capacity of fully mature DCs to elicit an in vitro antileukemic immune response. Dinoprostone indoleamine 2,3-dioxygenase 1 Homo sapiens
2 In particular, the role of IDO1 expression in PGE2-matured Mo-DCs has been addressed. Dinoprostone indoleamine 2,3-dioxygenase 1 Homo sapiens
3 Here we show that PGE2, which is required for full maturation of DCs, is one mediator of DC tolerance by enhancing IDO1. Dinoprostone indoleamine 2,3-dioxygenase 1 Homo sapiens
4 PGE2-mediated expression of IDO1 results in the production of kynurenine, in the generation of Tregs, and in the inhibition of either the allogeneic or the autologous antigen-specific stimulatory capacity of DCs. Dinoprostone indoleamine 2,3-dioxygenase 1 Homo sapiens
5 When pulsed with leukemic lysates and matured with PGE2, DCs are impaired in the induction of IFN-gamma secreting CD4(+) and CD8(+) T cells due to IDO1 upregulation. Dinoprostone indoleamine 2,3-dioxygenase 1 Homo sapiens
6 Overall, these results point toward the use of IDO1 inhibitors to enhance the vaccination capacity of DCs, matured with PGE2. Dinoprostone indoleamine 2,3-dioxygenase 1 Homo sapiens