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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Adenosine-to-inosine Alu RNA editing controls the stability of the pro-inflammatory long noncoding RNA NEAT1 in atherosclerotic cardiovascular disease
AU - Vlachogiannis, Nikolaos I
AU - Sachse, Marco
AU - Georgiopoulos, Georgios
AU - Zormpas, Eleftherios
AU - Bampatsias, Dimitrios
AU - Delialis, Dimitrios
AU - Bonini, Francesca
AU - Galyfos, George
AU - Sigala, Fragiska
AU - Stamatelopoulos, Kimon
AU - Gatsiou, Aikaterini
AU - Stellos, Konstantinos
N1 - Copyright © 2021 The Authors. Published by Elsevier Ltd.. All rights reserved.
PY - 2021/11/30
Y1 - 2021/11/30
N2 - Long non-coding RNAs (lncRNAs) have emerged as critical regulators in human disease including atherosclerosis. However, the mechanisms involved in the post-transcriptional regulation of the expression of disease-associated lncRNAs are not fully understood. Gene expression studies revealed that Nuclear Paraspeckle Assembly Transcript 1 (NEAT1) lncRNA expression was increased by >2-fold in peripheral blood mononuclear cells (PBMCs) derived from patients with coronary artery disease (CAD) or in carotid artery atherosclerotic plaques. We observed a linear association between NEAT1 lncRNA expression and prevalence of CAD which was independent of age, sex, cardiovascular traditional risk factors and renal function. NEAT1 expression was induced by TNF-α, while silencing of NEAT1 profoundly attenuated the TNF-α-induced vascular endothelial cell pro-inflammatory response as defined by the expression of CXCL8, CCL2, VCAM1 and ICAM1. Overexpression of the RNA editing enzyme adenosine deaminase acting on RNA-1 (ADAR1), but not of its editing-deficient mutant, upregulated NEAT1 levels. Conversely, silencing of ADAR1 suppressed the basal levels and the TNF-α-induced increase of NEAT1. NEAT1 lncRNA expression was strongly associated with ADAR1 in CAD and peripheral arterial vascular disease. RNA editing mapping studies revealed the presence of several inosines in close proximity to AU-rich elements within the AluSx3+/AluJo- double-stranded RNA complex. Silencing of the stabilizing RNA-binding protein AUF1 reduced NEAT1 levels while silencing of ADAR1 profoundly affected the binding capacity of AUF1 to NEAT1. Together, our findings propose a mechanism by which ADAR1-catalyzed A-to-I RNA editing controls NEAT1 lncRNA stability in ASCVD.
AB - Long non-coding RNAs (lncRNAs) have emerged as critical regulators in human disease including atherosclerosis. However, the mechanisms involved in the post-transcriptional regulation of the expression of disease-associated lncRNAs are not fully understood. Gene expression studies revealed that Nuclear Paraspeckle Assembly Transcript 1 (NEAT1) lncRNA expression was increased by >2-fold in peripheral blood mononuclear cells (PBMCs) derived from patients with coronary artery disease (CAD) or in carotid artery atherosclerotic plaques. We observed a linear association between NEAT1 lncRNA expression and prevalence of CAD which was independent of age, sex, cardiovascular traditional risk factors and renal function. NEAT1 expression was induced by TNF-α, while silencing of NEAT1 profoundly attenuated the TNF-α-induced vascular endothelial cell pro-inflammatory response as defined by the expression of CXCL8, CCL2, VCAM1 and ICAM1. Overexpression of the RNA editing enzyme adenosine deaminase acting on RNA-1 (ADAR1), but not of its editing-deficient mutant, upregulated NEAT1 levels. Conversely, silencing of ADAR1 suppressed the basal levels and the TNF-α-induced increase of NEAT1. NEAT1 lncRNA expression was strongly associated with ADAR1 in CAD and peripheral arterial vascular disease. RNA editing mapping studies revealed the presence of several inosines in close proximity to AU-rich elements within the AluSx3+/AluJo- double-stranded RNA complex. Silencing of the stabilizing RNA-binding protein AUF1 reduced NEAT1 levels while silencing of ADAR1 profoundly affected the binding capacity of AUF1 to NEAT1. Together, our findings propose a mechanism by which ADAR1-catalyzed A-to-I RNA editing controls NEAT1 lncRNA stability in ASCVD.
KW - Adenosine/metabolism
KW - Adenosine Deaminase/genetics
KW - Adult
KW - Aged
KW - Aged, 80 and over
KW - Alu Elements/genetics
KW - Atherosclerosis/blood
KW - Binding Sites
KW - Cells, Cultured
KW - Cohort Studies
KW - Coronary Artery Disease/blood
KW - Female
KW - Gene Silencing
KW - Heterogeneous Nuclear Ribonucleoprotein D0/genetics
KW - Human Umbilical Vein Endothelial Cells
KW - Humans
KW - Inosine/metabolism
KW - Leukocytes, Mononuclear/metabolism
KW - Male
KW - Middle Aged
KW - Plaque, Atherosclerotic/blood
KW - RNA Editing/genetics
KW - RNA Stability/genetics
KW - RNA, Long Noncoding/genetics
KW - RNA-Binding Proteins/genetics
KW - Signal Transduction/genetics
KW - Transfection
U2 - 10.1016/j.yjmcc.2021.07.005
DO - 10.1016/j.yjmcc.2021.07.005
M3 - Journal article
C2 - 34302813
VL - 160
SP - 111
EP - 120
JO - Journal of molecular and cellular cardiology
JF - Journal of molecular and cellular cardiology
SN - 0022-2828
ER -