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Página principal > Artículos > Artículos publicados > CD69-oxLDL ligand engagement induces Programmed Cell Death 1 (PD-1) expression in human CD4 + T lymphocytes |
Fecha: | 2022 |
Resumen: | The mechanisms that control the inflammatory-immune response play a key role in tissue remodelling in cardiovascular diseases. T cell activation receptor CD69 binds to oxidized low-density lipoprotein (oxLDL), inducing the expression of anti-inflammatory NR4A nuclear receptors and modulating inflammation in atherosclerosis. To understand the downstream T cell responses triggered by the CD69-oxLDL binding, we incubated CD69-expressing Jurkat T cells with oxLDL. RNA sequencing revealed a differential gene expression profile dependent on the presence of CD69 and the degree of LDL oxidation. CD69-oxLDL binding induced the expression of NR4A receptors (NR4A1 and NR4A3), but also of PD-1. These results were confirmed using oxLDL and a monoclonal antibody against CD69 in CD69-expressing Jurkat and primary CD4 + lymphocytes. CD69-mediated induction of PD-1 and NR4A3 was dependent on NFAT activation. Silencing NR4A3 slightly increased PD-1 levels, suggesting a potential regulation of PD-1 by this receptor. Moreover, expression of PD-1, CD69 and NR4A3 was increased in human arteries with chronic inflammation compared to healthy controls, with a strong correlation between PD-1 and CD69 mRNA expression (r = 0. 655 P < 0. 0001). Moreover, PD-1 was expressed in areas enriched in CD3 infiltrating T cells. Our results underscore a novel mechanism of PD-1 induction independent of TCR signalling that might contribute to the role of CD69 in the modulation of inflammation and vascular remodelling in cardiovascular diseases. |
Ayudas: | Instituto de Salud Carlos III PDC2021-121719-I00 Instituto de Salud Carlos III PDI-2020-120412RBI00 Instituto de Salud Carlos III PI18/0919 Agencia Estatal de Investigación RTI2018-094727-B-100 Agencia Estatal de Investigación PRE2019-087941 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017-SGR-00333 |
Nota: | Altres ajuts: Comunidad de Madrid (S2017/BMD-3671-INFLAMUNE-CM); Ramón Areces Foundation "Ciencias de la Vida y la Salud"; Fundació Bancària "La Caixa" (HR17-00016); FEDER "A way of making Europe"; Ministerio de Universidades (FPU fellowship). |
Derechos: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Lengua: | Anglès |
Documento: | Article ; recerca ; Versió publicada |
Materia: | CD69 leucocyte activation receptor ; Oxldl ; Cardiovascular disease ; Programmed Death 1 (PD-1) ; Antiinfammatory response ; Infamed aorta |
Publicado en: | Cellular and Molecular Life Sciences, Vol. 79 Núm. 8 (august 2022) , p. 468, ISSN 1420-9071 |
13 p, 6.8 MB |