Hypoxia-induced PD-L1/PD-1 crosstalk impairs T-cell function in sleep apnoea

Obstructive sleep apnoea (OSA) is associated with higher cancer incidence, tumour aggressiveness and cancer mortality, as well as greater severity of infections, which have been attributed to an immune deregulation. We studied the expression of programmed cell death (PD)-1 receptor and its ligand (P...

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Veröffentlicht in:The European respiratory journal 2017-10, Vol.50 (4), p.1700833-1700833
Hauptverfasser: Cubillos-Zapata, Carolina, Avendaño-Ortiz, Jose, Hernandez-Jimenez, Enrique, Toledano, Victor, Casas-Martin, Jose, Varela-Serrano, Anibal, Torres, Marta, Almendros, Isaac, Casitas, Raquel, Fernández-Navarro, Isabel, Garcia-Sanchez, Aldara, Aguirre, Luis A, Farre, Ramón, López-Collazo, Eduardo, García-Rio, Francisco
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container_issue 4
container_start_page 1700833
container_title The European respiratory journal
container_volume 50
creator Cubillos-Zapata, Carolina
Avendaño-Ortiz, Jose
Hernandez-Jimenez, Enrique
Toledano, Victor
Casas-Martin, Jose
Varela-Serrano, Anibal
Torres, Marta
Almendros, Isaac
Casitas, Raquel
Fernández-Navarro, Isabel
Garcia-Sanchez, Aldara
Aguirre, Luis A
Farre, Ramón
López-Collazo, Eduardo
García-Rio, Francisco
description Obstructive sleep apnoea (OSA) is associated with higher cancer incidence, tumour aggressiveness and cancer mortality, as well as greater severity of infections, which have been attributed to an immune deregulation. We studied the expression of programmed cell death (PD)-1 receptor and its ligand (PD-L1) on immune cells from patients with OSA, and its consequences on immune-suppressing activity. We report that PD-L1 was overexpressed on monocytes and PD-1 was overexpressed on CD8 T-cells in a severity-dependent manner. PD-L1 and PD-1 overexpression were induced in both the human and murine models of intermittent hypoxia, as well as by hypoxia-inducible factor-1α transfection. PD-L1/PD-1 crosstalk suppressed T-cell proliferation and activation of autologous T-lymphocytes and impaired the cytotoxic activity of CD8 T-cells. In addition, monocytes from patients with OSA exhibited high levels of retinoic acid related orphan receptor, which might explain the differentiation of myeloid-derived suppressor cells. Intermittent hypoxia upregulated the PD-L1/PD-1 crosstalk in patients with OSA, resulting in a reduction in CD8 T-cell activation and cytotoxicity, providing biological plausibility to the increased incidence and aggressiveness of cancer and the higher risk of infections described in these patients.
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subjects Adult
Animal models
Apnea
Apoptosis
B7-H1 Antigen - metabolism
Cancer
CD8 antigen
CD8-Positive T-Lymphocytes - physiology
Cell activation
Cell death
Cell proliferation
Cytotoxicity
Female
Gene Expression Regulation
Humans
Hypoxia
Hypoxia-inducible factors
Lymphocytes T
Male
Middle Aged
Monocytes
Monocytes - physiology
PD-1 protein
PD-L1 protein
Programmed Cell Death 1 Receptor - metabolism
Retinoic acid
Signal Transduction
Sleep
Sleep apnea
Sleep Apnea, Obstructive - diagnosis
Sleep Apnea, Obstructive - metabolism
Sleep disorders
Suppressor cells
T cell receptors
Transfection
Tumors
Up-Regulation
title Hypoxia-induced PD-L1/PD-1 crosstalk impairs T-cell function in sleep apnoea
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