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https://www.readbyqxmd.com/read/29718135/the-era-of-cardiovascular-epigenetics-histone-deacetylases-and-vascular-inflammation
#1
Akansha Tarun, Charalambos Antoniades
No abstract text is available yet for this article.
April 27, 2018: Cardiovascular Research
https://www.readbyqxmd.com/read/29651704/hdac9-polymorphism-alters-blood-gene-expression-in-patients-with-large-vessel-atherosclerotic-stroke
#2
Natasha Shroff, Bradley P Ander, Xinhua Zhan, Boryana Stamova, DaZhi Liu, Heather Hull, Farah R Hamade, Cheryl Dykstra-Aiello, Kwan Ng, Frank R Sharp, Glen C Jickling
The histone deacetylase 9 (HDAC9) polymorphism rs2107595 is associated with an increased risk for large vessel atherosclerotic stroke (LVAS). In humans, there remains a need to better understand this HDAC9 polymorphism's contribution to large vessel stroke. In this pilot study, we evaluated whether the HDAC9 polymorphism rs2107595 is associated with differences in leukocyte gene expression in patients with LVAS. HDAC9 SNP rs2107595 was genotyped in 155 patients (43 LVAS and 112 vascular risk factor controls)...
April 13, 2018: Translational Stroke Research
https://www.readbyqxmd.com/read/29588416/programmed-cell-death-5-suppresses-akt-mediated-cytoprotection-of-endothelium
#3
Seung-Hyun Lee, Jaesung Seo, Soo-Yeon Park, Mi-Hyeon Jeong, Hyo-Kyoung Choi, Chan Joo Lee, Mi Jeong Kim, Garam Guk, SooYeon Lee, Hyewon Park, Jae-Wook Jeong, Chang Hoon Ha, Sungha Park, Ho-Geun Yoon
Programmed cell death 5 (PDCD5) has been associated with human cancers as a regulator of cell death; however, the role of PDCD5 in the endothelium has not been revealed. Thus, we investigated whether PDCD5 regulates protein kinase B (PKB/AKT)-endothelial nitric oxide synthase (eNOS)-dependent signal transduction in the endothelium and affects atherosclerosis. Endothelial-specific PDCD5 knockout mice showed significantly reduced vascular remodeling compared with wild-type (WT) mice after partial carotid ligation...
May 1, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29587244/epigenetic-regulation-of-vascular-nadph-oxidase-expression-and-reactive-oxygen-species-production-by-histone-deacetylase-dependent-mechanisms-in-experimental-diabetes
#4
Simona-Adriana Manea, Mihaela-Loredana Antonescu, Ioana Madalina Fenyo, Monica Raicu, Maya Simionescu, Adrian Manea
Reactive oxygen species (ROS) generated by up-regulated NADPH oxidase (Nox) contribute to structural-functional alterations of the vascular wall in diabetes. Epigenetic mechanisms, such as histone acetylation, emerged as important regulators of gene expression in cardiovascular disorders. Since their role in diabetes is still elusive we hypothesized that histone deacetylase (HDAC)-dependent mechanisms could mediate vascular Nox overexpression in diabetic conditions. Non-diabetic and streptozotocin-induced diabetic C57BL/6J mice were randomized to receive vehicle or suberoylanilide hydroxamic acid (SAHA), a pan-HDAC inhibitor...
March 17, 2018: Redox Biology
https://www.readbyqxmd.com/read/29537214/hdac1-knockdown-inhibits-invasion-and-induces-apoptosis-in-non-small-cell-lung-cancer-cells
#5
Libin Zhang, Liang Bu, Jiang Hu, Zheyuan Xu, Libo Ruan, Yan Fang, Ping Wang
Non-small cell lung cancer (NSCLC) is a common malignant tumor. Although the abnormal expression and potential clinical prognostic value of histone deacetylase 1 (HDAC1) were recently discovered in many kinds of cancer, the roles and molecular mechanisms of HDAC1 in NSCLC is still limited. The CCK-8 assay is used to evaluate the viability of NSCLC cells. Downregulation of HDAC1 by shRNA. The TUNEL assay was used to evaluate the role of HDAC1 in NSCLC apoptosis. To evaluate the role of HDAC1 in NSCLC cells migration, the Boyden chamber transwell assay and wound healing assay were used...
March 12, 2018: Biological Chemistry
https://www.readbyqxmd.com/read/29529137/hdac4-regulates-vascular-inflammation-via-activation-of-autophagy
#6
Di Yang, ChenXi Xiao, Fen Long, ZhengHua Su, WanWan Jia, Ming Qin, MengWei Huang, WeiJun Wu, Rinkiko Suguro, XinHua Liu, YiZhun Zhu
Aims: Angiotensin II (Ang II) causes vascular inflammation, leading to vascular endothelial cell dysfunction, and is associated with the development of cardiovascular diseases. Therefore, interventions in inflammation may contribute to the reduction of cardiovascular diseases. Here, we aim to demonstrate that HDAC4, one of class IIa family histone deacetylases (HDACs) members, promotes autophagy-dependent vascular inflammation. Methods and results: By loss-of-function approaches, our study provides the first evidence that HDAC4 mediates Ang II-induced vascular inflammation in vitro and in vivo...
February 24, 2018: Cardiovascular Research
https://www.readbyqxmd.com/read/29520069/an-hdac9-malat1-brg1-complex-mediates-smooth-muscle-dysfunction-in-thoracic-aortic-aneurysm
#7
Christian L Lino Cardenas, Chase W Kessinger, Yisha Cheng, Carolyn MacDonald, Thomas MacGillivray, Brian Ghoshhajra, Luai Huleihel, Saifar Nuri, Ashish S Yeri, Farouc A Jaffer, Naftali Kaminski, Patrick Ellinor, Neal L Weintraub, Rajeev Malhotra, Eric M Isselbacher, Mark E Lindsay
Thoracic aortic aneurysm (TAA) has been associated with mutations affecting members of the TGF-β signaling pathway, or components and regulators of the vascular smooth muscle cell (VSMC) actomyosin cytoskeleton. Although both clinical groups present similar phenotypes, the existence of potential common mechanisms of pathogenesis remain obscure. Here we show that mutations affecting TGF-β signaling and VSMC cytoskeleton both lead to the formation of a ternary complex comprising the histone deacetylase HDAC9, the chromatin-remodeling enzyme BRG1, and the long noncoding RNA MALAT1...
March 8, 2018: Nature Communications
https://www.readbyqxmd.com/read/29514810/phosphatidylinositol-3-kinase-dna-methyltransferase-1-mir-1281-histone-deacetylase-4-regulatory-axis-mediates-platelet-derived-growth-factor-induced-proliferation-and-migration-of-pulmonary-artery-smooth-muscle-cells
#8
Yanjiao Li, Li Li, Zhengjiang Qian, Boya Lin, Jidong Chen, Yixuan Luo, Junle Qu, J Usha Raj, Deming Gou
BACKGROUND: Platelet-derived growth factor BB, a potent mitogen of pulmonary artery smooth muscle cells (PASMCs), has been implicated in pulmonary arterial remodeling, which is a key pathogenic feature of pulmonary arterial hypertension. Previous microRNA profiling in platelet-derived growth factor BB-treated PASMCs found a significantly downregulated microRNA, miR-1281, but it has not been associated with any cellular function, and we investigated the possibility. METHODS AND RESULTS: Real-time quantitative reverse transcription-polymerase chain reaction assay proved that downregulation of miR-1281 was a conserved phenomenon in human and rat PASMCs...
March 7, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29511860/dj-1-is-involved-in-epigenetic-control-of-sphingosine-1-phosphate-receptor-expression-in-vascular-neointima-formation
#9
Kang Pa Lee, Suji Baek, Seung Hyo Jung, Long Cui, Donghyen Lee, Dong-Youb Lee, Wahn Soo Choi, Hyun Woo Chung, Byeong Han Lee, Bokyung Kim, Kyung Jong Won
DJ-1 and sphingosine-1-phosphate (S1P) receptors (S1PRs) are implicated in the control of physiology and pathophysiology of cardiovascular systems such as blood pressure, atherosclerosis, and restenosis. Here, we investigated whether DJ-1 with antioxidant function participates in the regulation of S1PR1 and S1PR2 expression in vascular smooth muscle cells (VSMCs) and whether this response is related to vascular neointima formation. In vitro studies used cellular migration assay, western blot, reverse transcriptase and real-time PCR analysis, and immunocytochemistry...
March 6, 2018: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/29501934/progesterone-attenuates-airway-remodeling-and-glucocorticoid-resistance-in-a-murine-model-of-exposing-to-ozone
#10
Xue Zhang, Wuping Bao, Xia Fei, Yingying Zhang, Guoqing Zhang, Xin Zhou, Min Zhang
Airway remodeling is a vital component of chronic obstructive pulmonary disease (COPD). Despite the broad anti-inflammation effects of glucocorticoids, they exhibit relatively little therapeutic benefit in COPD, indicating the accelerating demands of new agents for COPD. We aim to explore the effect of progesterone on airway remodeling in a murine modeling of exposing to ozone and to further examine the potential effect of progesterone on glucocorticoid insensitivity. C57/BL6 mice were exposed to ozone for 12 times over 6 weeks, and were administered with progesterone alone or combined with budesonide (BUD) after each exposure until the 10th week...
April 2018: Molecular Immunology
https://www.readbyqxmd.com/read/29490434/endothelial-progenitor-cells-contribute-to-neovascularization-of-non-small-cell-lung-cancer-via-histone-deacetylase-7-mediated-cytoskeleton-regulation-and-angiogenic-genes-transcription
#11
Ye Wei, Fangzheng Zhou, Haibo Zhou, Jing Huang, Dandan Yu, Gang Wu
To supply tumor tissues with nutrients and oxygen, endothelial progenitor cells (EPCs) home to tumor sites and contribute to neovascularization. Although the precise mechanism of EPCs-induced neovascularization remains poorly understood in non-small cell lung cancer (NSCLC), histone deacetylase 7 (HDAC7) is considered as a critical regulator. To explore the function of HDAC7 in neovascularization induced by EPCs, tube formation assay, immunofluorescence, microarray, Western blot analysis and animal models were performed...
February 28, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29462961/a-phase-i-ii-study-targeting-angiogenesis-using-bevacizumab-combined-with-chemotherapy-and-a-histone-deacetylase-inhibitor-valproic-acid-in-advanced-sarcomas
#12
Varun Monga, Umang Swami, Munir Tanas, Aaron Bossler, Sarah L Mott, Brian J Smith, Mohammed Milhem
Epigenetic events and genetic alterations under the control of the tumor microenvironment potentially mediate tumor induced angiogenesis involved in soft tissue sarcoma (STS) metastasis. Addition of antiangiogenic agent, such as bevacizumab, to standard chemotherapy in treatment of sarcoma has been studied in clinical trials, but most of the findings have not supported its use. We hypothesized the existence of an epigenetically mediated "angiogenic switch", and the tumor microenvironment, prevents bevacizumab from truly blocking angiogenesis...
February 17, 2018: Cancers
https://www.readbyqxmd.com/read/29459264/induction-of-microrna-10a-using-retinoic-acid-receptor-%C3%AE-and-retinoid-x-receptor-%C3%AE-agonists-inhibits-atherosclerotic-lesion-formation
#13
Ding-Yu Lee, Tung-Lin Yang, Yi-Hsuan Huang, Chih-I Lee, Li-Jing Chen, Yu-Tsung Shih, Shu-Yi Wei, Wei-Li Wang, Chih-Cheng Wu, Jeng-Jiann Chiu
BACKGROUND AND AIMS: MicroRNA (miR)-10a is a shear-regulated miR with the lowest expression in vascular endothelial cells (ECs) in athero-susceptible regions with oscillatory shear stress (OS). The aim of this study is to elucidate the relationship between EC miR-10a and atherosclerosis and develop a hemodynamics-based strategy for atherosclerosis treatment. METHODS: A combination of in vitro flow system and in vivo experimental animals was used to examine the functional roles of EC miR-10a and its clinical applications in atherosclerosis...
April 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29434685/salidroside-attenuates-hypoxia-reoxygenation-induced-human-brain-vascular-smooth-muscle-cell-injury-by-activating-the-sirt1-foxo3%C3%AE-pathway
#14
Lina Xu, Longbin Jia, Qingyun Wang, Jing Hou, Shifang Li, Junfang Teng
It has been reported that salidroside (SAL), a natural dietary isothiocyanate, exhibits neuroprotective roles in cerebral ischemia-reperfusion injury. However, to the best of our knowledge, its underlying protective mechanism remains unknown. Sirtuin 1 (SIRT1) is a class III histone deacetylase involved in a variety of cellular functions. SIRT1 has been identified as a mediator of cerebral ischemia and may induce neuroprotection by activating various intracellular downstream targets, such as forkhead box protein O3α (FOXO3α)...
January 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29416751/trichostatin-a-resistance-is-facilitated-by-hif-1%C3%AE-acetylation-in-hela-human-cervical-cancer-cells-under-normoxic-conditions
#15
Jae-Wook Lee, Dong Hee Yang, Sojin Park, Hae-Kyoung Han, Jong-Wan Park, Bo Yeon Kim, Sung Hee Um, Eun-Yi Moon
Trichostatin A (TSA) is an anticancer drug that inhibits histone deacetylases (HDACs). Hypoxia-inducible factor 1 (HIF-1) participates in tumor angiogenesis by upregulating target genes, such as vascular endothelial growth factor (VEGF). In the present study, we investigated whether TSA treatment increases HIF-1α stabilization via acetylation under normoxic conditions, which would lead to VEGF upregulation and resistance to anticancer drugs. TSA enhanced total HIF-1α and VEGF-HRE reporter activity under normoxic conditions...
January 5, 2018: Oncotarget
https://www.readbyqxmd.com/read/29414790/histone-acetyltransferase-7-kat7-dependent-intragenic-histone-acetylation-regulates-endothelial-cell-gene-regulation
#16
Matthew S Yan, Paul J Turgeon, Hon-Sum Jeffrey Man, Michelle K Dubinsky, J J David Ho, Suzan El-Rass, You-Dong Wang, Xiao-Yan Wen, Philip A Marsden
Although the functional role of chromatin marks at promoters in mediating cell-restricted gene expression has been well characterized, the role of intragenic chromatin marks is not well understood, especially in endothelial cell (EC) gene expression. Here, we characterized the histone H3 and H4 acetylation profiles of 19 genes with EC-enriched expression via locus-wide chromatin immunoprecipitation followed by ultra-high-resolution (5 bp) tiling array analysis in ECs versus non-ECs throughout their genomic loci...
March 23, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29393472/metastasis-associated-protein-2-promotes-the-metastasis-of-non-small-cell-lung-carcinoma-by-regulating-the-erk-akt-and-vegf-signaling-pathways
#17
Bin Zhang, Feng Tao, Hao Zhang
Non-small cell lung carcinoma (NSCLC) is the most common cause of cancer‑associated mortality in the world and accounts for ~85% of human lung cancers. Metastasis‑associated protein 2 (MTA2) is a component of the histone deacetylase complex and serves a role in tumor progression; however, the mechanism through which MTA2 is involved in the progression of NSCLC remains unclear. The aim of the present study was to investigate the expression and function of MTA2 and the MTA2‑mediated signaling pathway in NSCLC cells...
April 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29376497/l-sulforaphane-confers-protection-against-oxidative-stress-in-an-in-vitro-model-of-age-related-macular-degeneration
#18
Nabeela Khadija Dulull, Daniel Anthony Dias, Thilini Rasika Thrimawithana, Faith Ai Ai Kwa
BACKGROUND: In age-related macular degeneration, oxidative damage and abnormal neovascularization in the retina are caused by the upregulation of vascular endothelium growth factor and reduced expression of Glutathione-S-transferase genes. Current treatments are only palliative. Compounds from cruciferous vegetables (e.g. L-Sulforaphane) have been found to restore normal gene expression levels in diseases including cancer via the activity of histone deacetylases and DNA methyltransferases, thus retarding disease progression...
January 25, 2018: Current Molecular Pharmacology
https://www.readbyqxmd.com/read/29369849/sirtuin-1-regulates-pulmonary-artery-smooth-muscle-cell-proliferation-role-in-pulmonary-arterial-hypertension
#19
Giada Zurlo, Jérôme Piquereau, Maryline Moulin, Julie Pires Da Silva, Mélanie Gressette, Benoît Ranchoux, Anne Garnier, Renée Ventura-Clapier, Elie Fadel, Marc Humbert, Christophe Lemaire, Frédéric Perros, Vladimir Veksler
OBJECTIVE: Energy metabolism shift from oxidative phosphorylation toward glycolysis in pulmonary artery smooth muscle cells (PASMCs) is suggested to be involved in their hyperproliferation in pulmonary arterial hypertension (PAH). Here, we studied the role of the deacetylase sirtuin1 (SIRT1) in energy metabolism regulation in PASMCs via various pathways including activation of peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α), master regulator of mitochondrial biogenesis...
May 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29339432/deregulation-of-hdac5-by-viral-interferon-regulatory-factor-3-plays-an-essential-role-in-kaposi-s-sarcoma-associated-herpesvirus-induced-lymphangiogenesis
#20
Hye-Ra Lee, Fan Li, Un Yung Choi, Hye Ryun Yu, Grace M Aldrovandi, Pinghui Feng, Shou-Jiang Gao, Young-Kwon Hong, Jae U Jung
Kaposi's sarcoma-associated herpesvirus (KSHV) is the etiologic agent for Kaposi's sarcoma (KS), which is one of the most common HIV-associated neoplasms. The endothelium is the thin layer of squamous cells where vascular blood endothelial cells (BECs) line the interior surface of blood vessels and lymphatic endothelial cells (LECs) are in direct contact with lymphatic vessels. The KS lesions contain a prominent compartment of neoplastic spindle morphology cells that are closely related to LECs. Furthermore, while KSHV can infect both LECs and BECs in vitro , its infection activates genetic programming related to lymphatic endothelial cell fate, suggesting that lymphangiogenic pathways are involved in KSHV infection and malignancy...
January 16, 2018: MBio
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