TY - JOUR
T1 - CD8+T-cell priming is quantitatively but not qualitatively impaired in people with HIV-1 on antiretroviral therapy
AU - Cabral-Piccin, Mariela P.
AU - Briceño, Olivia
AU - Papagno, Laura
AU - Liouville, Benjamin
AU - White, Eoghann
AU - Perdomo-Celis, Federico
AU - Autaa, Gaëlle
AU - Volant, Stevenn
AU - Llewellyn-Lacey, Sian
AU - Fromentin, Rémi
AU - Chomont, Nicolas
AU - Price, David A.
AU - Sáez-Cirión, Asier
AU - Lambotte, Olivier
AU - Katlama, Christine
AU - Appay, Victor
N1 - Publisher Copyright:
© 2024 Lippincott Williams and Wilkins. All rights reserved.
PY - 2024/2/1
Y1 - 2024/2/1
N2 - Background:The induction of de novo CD8+T-cell responses is essential for protective antiviral immunity, but this process is often impaired in people with HIV-1 (PWH). We investigated the extent to which the immune competence of naive CD8+T cells, a key determinant of priming efficacy, could be preserved or restored in PWH via long-term antiretroviral therapy (ART).Methods:We used flow cytometry, molecular analyses of gene transcription and telomere length, and a fully validated priming assay to characterize naive CD8+T cells ex vivo and evaluate the induction of antigen-specific effector/memory CD8+T cells in vitro, comparing age-matched healthy uninfected donors (HUDs), PWH on ART, and natural HIV-1 controllers (HICs).Results:We found that naive CD8+T cells were numerically reduced and exhibited a trend toward shorter telomere lengths in PWH on ART compared with HUDs and HICs. These features associated with impaired priming efficacy. However, we also found that naive CD8+T cells were fully equipped proliferatively and transcriptionally in PWH on ART, enabling the generation of antigen-specific effector/memory CD8+T cells with functional and phenotypic attributes comparable to those primed from HUDs.Conclusion:Our data suggest that naive CD8+T cells in PWH on ART are intrinsically capable of generating functionally and phenotypically intact effector/memory CD8+T cells in response to antigen, despite evidence of senescence and an overall numerical reduction that compromises priming efficacy relative to HUDs and HICs.
AB - Background:The induction of de novo CD8+T-cell responses is essential for protective antiviral immunity, but this process is often impaired in people with HIV-1 (PWH). We investigated the extent to which the immune competence of naive CD8+T cells, a key determinant of priming efficacy, could be preserved or restored in PWH via long-term antiretroviral therapy (ART).Methods:We used flow cytometry, molecular analyses of gene transcription and telomere length, and a fully validated priming assay to characterize naive CD8+T cells ex vivo and evaluate the induction of antigen-specific effector/memory CD8+T cells in vitro, comparing age-matched healthy uninfected donors (HUDs), PWH on ART, and natural HIV-1 controllers (HICs).Results:We found that naive CD8+T cells were numerically reduced and exhibited a trend toward shorter telomere lengths in PWH on ART compared with HUDs and HICs. These features associated with impaired priming efficacy. However, we also found that naive CD8+T cells were fully equipped proliferatively and transcriptionally in PWH on ART, enabling the generation of antigen-specific effector/memory CD8+T cells with functional and phenotypic attributes comparable to those primed from HUDs.Conclusion:Our data suggest that naive CD8+T cells in PWH on ART are intrinsically capable of generating functionally and phenotypically intact effector/memory CD8+T cells in response to antigen, despite evidence of senescence and an overall numerical reduction that compromises priming efficacy relative to HUDs and HICs.
KW - antiretroviral therapy
KW - CD8T cell
KW - HIV-1
UR - http://www.scopus.com/inward/record.url?scp=85180402310&partnerID=8YFLogxK
U2 - 10.1097/QAD.0000000000003746
DO - 10.1097/QAD.0000000000003746
M3 - Article
C2 - 37800637
AN - SCOPUS:85180402310
SN - 0269-9370
VL - 38
SP - 161
EP - 166
JO - AIDS
JF - AIDS
IS - 2
ER -