Hyperglycemia Promotes Endothelial Cell Senescence through AQR/PLAU Signaling Axis

Hyperglycemia is reported to accelerate endothelial cell senescence that contributes to diabetic complications. The underlying mechanism, however, remains elusive. We previously demonstrated as a susceptibility gene for type 2 diabetes mellitus (T2DM) and showed that it was increased in multiple tis...

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Veröffentlicht in:International journal of molecular sciences 2022-03, Vol.23 (5), p.2879
Hauptverfasser: Wan, Yiqi, Liu, Zhirui, Wu, Andong, Khan, Abdul Haseeb, Zhu, Ying, Ding, Shuangjin, Li, Xueer, Zhao, Ya, Dai, Ximo, Zhou, Jin, Liu, Jiankun, Li, Yuanyuan, Gong, Xueting, Liu, Man, Tian, Xiao-Li
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container_issue 5
container_start_page 2879
container_title International journal of molecular sciences
container_volume 23
creator Wan, Yiqi
Liu, Zhirui
Wu, Andong
Khan, Abdul Haseeb
Zhu, Ying
Ding, Shuangjin
Li, Xueer
Zhao, Ya
Dai, Ximo
Zhou, Jin
Liu, Jiankun
Li, Yuanyuan
Gong, Xueting
Liu, Man
Tian, Xiao-Li
description Hyperglycemia is reported to accelerate endothelial cell senescence that contributes to diabetic complications. The underlying mechanism, however, remains elusive. We previously demonstrated as a susceptibility gene for type 2 diabetes mellitus (T2DM) and showed that it was increased in multiple tissues in models with T2DM or metabolic syndrome. This study aimed to investigate the role of AQR in hyperglycemia-induced senescence and its underlying mechanism. Here, we retrieved several datasets of the aging models and found the expression of AQR was increased by high glucose and by aging across species, including (whole-body), rat (cardiac tissues), and monkey (blood). we validated the increased AQR expression in senescent human umbilical vein endothelial cells (HUVECs). When overexpressed, AQR promoted the endothelial cell senescence, confirmed by an increased number of cells stained with senescence-associated beta-galactosidase and upregulation of CDKN1A (P21) as well as the prohibited cellular colony formation and G2/M phase arrest. To explore the mechanism by which AQR regulated the cellular senescence, transcriptomic analyses of HUVECs with the overexpression and knockdown of the AQR were performed. We identified 52 co-expressed genes that were enriched, in the terms of plasminogen activation, innate immunity, immunity, and antiviral defense. Among co-expressed genes, was selected to evaluate its contribution to senescence for its highest strength in the enrichment of the biological process. We demonstrated that the knockdown of PLAU rescued senescence-related phenotypes, endothelial cell activation, and inflammation in models induced by AQR or TNF-α. These findings, for the first time, indicate that AQR/PLAU is a critical signaling axis in the modulation of endothelial cell senescence, revealing a novel link between hyperglycemia and vascular dysfunction. The study may have implications in the prevention of premature vascular aging associated with T2DM.
doi_str_mv 10.3390/ijms23052879
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The underlying mechanism, however, remains elusive. We previously demonstrated as a susceptibility gene for type 2 diabetes mellitus (T2DM) and showed that it was increased in multiple tissues in models with T2DM or metabolic syndrome. This study aimed to investigate the role of AQR in hyperglycemia-induced senescence and its underlying mechanism. Here, we retrieved several datasets of the aging models and found the expression of AQR was increased by high glucose and by aging across species, including (whole-body), rat (cardiac tissues), and monkey (blood). we validated the increased AQR expression in senescent human umbilical vein endothelial cells (HUVECs). When overexpressed, AQR promoted the endothelial cell senescence, confirmed by an increased number of cells stained with senescence-associated beta-galactosidase and upregulation of CDKN1A (P21) as well as the prohibited cellular colony formation and G2/M phase arrest. To explore the mechanism by which AQR regulated the cellular senescence, transcriptomic analyses of HUVECs with the overexpression and knockdown of the AQR were performed. We identified 52 co-expressed genes that were enriched, in the terms of plasminogen activation, innate immunity, immunity, and antiviral defense. Among co-expressed genes, was selected to evaluate its contribution to senescence for its highest strength in the enrichment of the biological process. We demonstrated that the knockdown of PLAU rescued senescence-related phenotypes, endothelial cell activation, and inflammation in models induced by AQR or TNF-α. These findings, for the first time, indicate that AQR/PLAU is a critical signaling axis in the modulation of endothelial cell senescence, revealing a novel link between hyperglycemia and vascular dysfunction. 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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). 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The underlying mechanism, however, remains elusive. We previously demonstrated as a susceptibility gene for type 2 diabetes mellitus (T2DM) and showed that it was increased in multiple tissues in models with T2DM or metabolic syndrome. This study aimed to investigate the role of AQR in hyperglycemia-induced senescence and its underlying mechanism. Here, we retrieved several datasets of the aging models and found the expression of AQR was increased by high glucose and by aging across species, including (whole-body), rat (cardiac tissues), and monkey (blood). we validated the increased AQR expression in senescent human umbilical vein endothelial cells (HUVECs). When overexpressed, AQR promoted the endothelial cell senescence, confirmed by an increased number of cells stained with senescence-associated beta-galactosidase and upregulation of CDKN1A (P21) as well as the prohibited cellular colony formation and G2/M phase arrest. 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source MDPI - Multidisciplinary Digital Publishing Institute; MEDLINE; EZB-FREE-00999 freely available EZB journals; PubMed Central
subjects Aging
Animals
Biological activity
Biological Phenomena
Caenorhabditis elegans
Cardiovascular disease
Cell activation
Cell cycle
Cell growth
Cells, Cultured
Cellular Senescence - genetics
Datasets
Diabetes
Diabetes mellitus
Diabetes mellitus (non-insulin dependent)
Diabetes Mellitus, Type 2
Endothelial cells
Galactosidase
Genes
Glucose
Human Umbilical Vein Endothelial Cells - metabolism
Humans
Hyperglycemia
Hyperglycemia - genetics
Hyperglycemia - metabolism
Innate immunity
Metabolic disorders
Metabolic syndrome
Phenotypes
Proteins
Rats
Senescence
Smooth muscle
Transcriptomics
Tumor necrosis factor-α
Umbilical vein
β-Galactosidase
title Hyperglycemia Promotes Endothelial Cell Senescence through AQR/PLAU Signaling Axis
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