Indoleamine 2,3-dioxygenase upregulates PD-1 expression on ovarian tumor infiltrating CD8+ T cells via kynurenine activation of the aryl hydrocarbon receptor
A. Amobi-McCloud, R. MUTHUSWAMY, S. Battaglia, H. Yu, T. Liu, J. Wang, V. Putluri, P. K. Singh, F. Qian, R.-Y. Huang, N. Putluri, T. Takemasa, A. Lugade, S. Liu, K. Odunsi
This study shows that IDO1 promotes PD-1 expression on CD8+ T cells in ovarian tumors through kynurenine-mediated AHR activation, suggesting therapeutic targeting of these pathways.
bioRxiv · Feb 18, 2021 · PreprintImmunology