2026-04-13T00:01:55Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4756382025-10-13T11:42:23Zcom_2072_98col_2072_378192

00925njm 22002777a 4500 dc Calvet-Mirabent, Marta author Sánchez-Cerrillo, Ildefonso author Martín-Cófreces, Noa author Martínez-Fleta, Pedro author de la Fuente, Hortensia author Tsukalov, Ilya author Delgado-Arévalo, Cristina author Calzada, María José author de los Santos Gil, Ignacio author Sanz, Jesús author García-Fraile, Lucio author Sánchez-Madrid, Francisco author Alfranca, Arantzazu author Muñoz-Fernández, María Ángeles author Buzón, Maria José author Martín-Gayo, Enrique author 2022 Dysfunction of CD8 + T cells in people living with HIV-1 (PLWH) receiving anti-retroviral therapy (ART) has restricted the efficacy of dendritic cell (DC)-based immunotherapies against HIV-1. Heterogeneous immune exhaustion and metabolic states of CD8 + T cells might differentially associate with dysfunction. However, specific parameters associated to functional restoration of CD8 + T cells after DC treatment have not been investigated. We studied association of restoration of functional HIV-1-specific CD8 + T cell responses after stimulation with Gag-adjuvant-primed DC with ART duration, exhaustion, metabolic and memory cell subsets profiles. HIV-1-specific CD8 + T cell responses from a larger proportion of PLWH on long-term ART (more than 10 years; LT-ARTp) improved polyfunctionality and capacity to eliminate autologous p24 + infected CD4 + T cells in vitro. In contrast, functional improvement of CD8 + T cells from PLWH on short-term ART (less than a decade; ST-ARTp) after DC treatment was limited. This was associated with lower frequencies of central memory CD8 + T cells, increased co-expression of PD1 and TIGIT and reduced mitochondrial respiration and glycolysis induction upon TCR activation. In contrast, CD8 + T cells from LT-ARTp showed increased frequencies of TIM3 + PD1 - cells and preserved induction of glycolysis. Treatment of dysfunctional CD8 + T cells from ST-ARTp with combined anti-PD1 and anti-TIGIT antibodies plus a glycolysis promoting drug restored their ability to eliminate infected CD4 + T cells. Together, our study identifies specific immunometabolic parameters for different PLWH subgroups potentially useful for future personalized DC-based HIV-1 vaccines. NIH (R21AI140930), MINECO/FEDER RETOS (RTI2018-097485-A-I00) and CIBERINF grants. HIV CD8 + T cell Dendritic cell Immunotherapy Immune exhaustion Metabolism Antiretroviral therapy duration and immunometabolic state determine efficacy of ex vivo dendritic cell-based treatment restoring functional HIV-specific CD8+ T cells in people living with HIV