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Wacker M, Ball A, Beer HD, Schmitz I, Borucki K, Azizzadeh F, Scherner M, Awad G, Wippermann J, Veluswamy P. Immunophenotyping of Monocyte Migration Markers and Therapeutic Effects of Selenium on IL-6 and IL-1β Cytokine Axes of Blood Mononuclear Cells in Preoperative and Postoperative Coronary Artery Disease Patients. Int J Mol Sci 2023; 24:7198. [PMID: 37108367 PMCID: PMC10139122 DOI: 10.3390/ijms24087198] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/05/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Multivessel coronary artery disease (CAD) is characterized by underlying chronic vascular inflammation and occlusion in the coronary arteries, where these patients undergo coronary artery bypass grafting (CABG). Since post-cardiotomy inflammation is a well known phenomenon after CABG, attenuation of this inflammation is required to reduce perioperative morbidity and mortality. In this study, we aimed to phenotype circulating frequencies and intensities of monocyte subsets and monocyte migration markers, respectively, and to investigate the plasma level of inflammatory cytokines and chemokines between preoperative and postoperative CAD patients and later, to intervene the inflammation with sodium selenite. We found a higher amplitude of inflammation, postoperatively, in terms of CCR1high monocytes and significantly increased pro-inflammatory cytokines, IL-6, IL-8, and IL-1RA. Further, in vitro intervention with selenium displayed mitigating effects on the IL-6/STAT-3 axis of mononuclear cells derived from postoperative CAD patients. In addition, in vitro selenium intervention significantly reduced IL-1β production as well as decreased cleaved caspase-1 (p20) activity by preoperative (when stimulated) as well as postoperative CAD mononuclear cells. Though TNF-α exhibited a positive correlation with blood troponin levels in postoperative CAD patients, there was no obvious effect of selenium on the TNF-α/NF-κB axis. In conclusion, anti-inflammatory selenium might be utilized to impede systemic inflammatory cytokine axes to circumvent aggravating atherosclerosis and further damage to the autologous bypass grafts during the post-surgical period.
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Affiliation(s)
- Max Wacker
- Heart Surgery Research, Department of Cardiothoracic Surgery, Otto-von-Guericke University Hospital, Leipziger Straße 44, 39120 Magdeburg, Germany; (M.W.); (A.B.); (F.A.); (M.S.); (G.A.); (J.W.)
| | - Anna Ball
- Heart Surgery Research, Department of Cardiothoracic Surgery, Otto-von-Guericke University Hospital, Leipziger Straße 44, 39120 Magdeburg, Germany; (M.W.); (A.B.); (F.A.); (M.S.); (G.A.); (J.W.)
| | - Hans-Dietmar Beer
- Department of Dermatology, University Hospital Zurich, CH-8952 Schlieren, Switzerland;
| | - Ingo Schmitz
- Department of Molecular Immunology, Medical Faculty of Ruhr-University Bochum, 44801 Bochum, Germany;
| | - Katrin Borucki
- Institute of Clinical Chemistry and Pathobiochemistry, Otto-von-Guericke University, 39120 Magdeburg, Germany;
| | - Faranak Azizzadeh
- Heart Surgery Research, Department of Cardiothoracic Surgery, Otto-von-Guericke University Hospital, Leipziger Straße 44, 39120 Magdeburg, Germany; (M.W.); (A.B.); (F.A.); (M.S.); (G.A.); (J.W.)
| | - Maximilian Scherner
- Heart Surgery Research, Department of Cardiothoracic Surgery, Otto-von-Guericke University Hospital, Leipziger Straße 44, 39120 Magdeburg, Germany; (M.W.); (A.B.); (F.A.); (M.S.); (G.A.); (J.W.)
| | - George Awad
- Heart Surgery Research, Department of Cardiothoracic Surgery, Otto-von-Guericke University Hospital, Leipziger Straße 44, 39120 Magdeburg, Germany; (M.W.); (A.B.); (F.A.); (M.S.); (G.A.); (J.W.)
| | - Jens Wippermann
- Heart Surgery Research, Department of Cardiothoracic Surgery, Otto-von-Guericke University Hospital, Leipziger Straße 44, 39120 Magdeburg, Germany; (M.W.); (A.B.); (F.A.); (M.S.); (G.A.); (J.W.)
| | - Priya Veluswamy
- Heart Surgery Research, Department of Cardiothoracic Surgery, Otto-von-Guericke University Hospital, Leipziger Straße 44, 39120 Magdeburg, Germany; (M.W.); (A.B.); (F.A.); (M.S.); (G.A.); (J.W.)
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Hsu CY, Huang CY, Shih CM, Lin YW, Huang PH, Lin SJ, Liu CW, Lin CY, Lin FY. Tumor Necrosis Factor Superfamily 14 (LIGHT) Restricts Neovascularization by Decreasing Circulating Endothelial Progenitor Cells and Function. Int J Mol Sci 2023; 24:ijms24086997. [PMID: 37108160 PMCID: PMC10138919 DOI: 10.3390/ijms24086997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/29/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023] Open
Abstract
Tumor necrosis factor superfamily 14 (TNFSF14) is also known as the LT-related inducible ligand (LIGHT). It can bind to the herpesvirus invasion mediator and lymphotoxin-β receptor to perform its biological activity. LIGHT has multiple physiological functions, including strengthening the synthesis of nitric oxide, reactive oxygen species, and cytokines. LIGHT also stimulates angiogenesis in tumors and induces the synthesis of high endothelial venules; degrades the extracellular matrix in thoracic aortic dissection, and induces the expression of interleukin-8, cyclooxygenase-2, and cell adhesion molecules in endothelial cells. While LIGHT induces tissue inflammation, its effects on angiogenesis after tissue ischemia are unclear. Thus, we analyzed these effects in the current study. In this study, the animal model of hind limb ischemia surgery in C57BL/6 mice was performed. Doppler ultrasound, immunohistochemical staining, and Western blotting were employed to analyze the situation of angiogenesis. In addition, human endothelial progenitor cells (EPCs) were used for in vitro studies to analyze the possible mechanisms. The results in the animal study showed that LIGHT injection inhibited angiogenesis in ischemic limbs. For the in vitro studies, LIGHT inhibited the expression of integrins and E-selectin; decreased migration and tube formation capabilities, mitochondrial respiration, and succinate dehydrogenase activity; and promoted senescence in EPCs. Western blotting revealed that the impairment of EPC function by LIGHT may be due to its effects on the proper functioning of the intracellular Akt signaling pathway, endothelial nitrite oxide synthase (eNOS), and mitochondrial respiration. In conclusion, LIGHT inhibits angiogenesis after tissue ischemia. This may be related to the clamped EPC function.
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Affiliation(s)
- Chien-Yi Hsu
- Taipei Heart Institute and Division of Cardiology, Department of Internal Medicine, Taipei Medical University, Taipei 110, Taiwan
- Division of Cardiology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan
| | - Chun-Yao Huang
- Taipei Heart Institute and Division of Cardiology, Department of Internal Medicine, Taipei Medical University, Taipei 110, Taiwan
- Division of Cardiology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan
- Department of Biomedical Sciences and Engineering, National Central University, Taoyuan City 320, Taiwan
| | - Chun-Ming Shih
- Taipei Heart Institute and Division of Cardiology, Department of Internal Medicine, Taipei Medical University, Taipei 110, Taiwan
- Division of Cardiology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan
| | - Yi-Wen Lin
- Institute of Oral Biology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Po-Hsun Huang
- Division of Cardiology, Taipei Veterans General Hospital, Taipei 112, Taiwan
| | - Shing-Jong Lin
- Taipei Heart Institute and Division of Cardiology, Department of Internal Medicine, Taipei Medical University, Taipei 110, Taiwan
- Division of Cardiology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan
| | - Chen-Wei Liu
- Department of Basic Medical Science, College of Medicine, University of Arizona, Phoenix, AZ 85721, USA
| | - Cheng-Yen Lin
- Healthcare Information and Management Department, Ming Chuan University, Taoyuan 333, Taiwan
| | - Feng-Yen Lin
- Taipei Heart Institute and Division of Cardiology, Department of Internal Medicine, Taipei Medical University, Taipei 110, Taiwan
- Division of Cardiology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan
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Medina-Leyte DJ, Zepeda-García O, Domínguez-Pérez M, González-Garrido A, Villarreal-Molina T, Jacobo-Albavera L. Endothelial Dysfunction, Inflammation and Coronary Artery Disease: Potential Biomarkers and Promising Therapeutical Approaches. Int J Mol Sci 2021; 22:3850. [PMID: 33917744 PMCID: PMC8068178 DOI: 10.3390/ijms22083850] [Citation(s) in RCA: 133] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/24/2021] [Accepted: 03/25/2021] [Indexed: 12/14/2022] Open
Abstract
Coronary artery disease (CAD) and its complications are the leading cause of death worldwide. Inflammatory activation and dysfunction of the endothelium are key events in the development and pathophysiology of atherosclerosis and are associated with an elevated risk of cardiovascular events. There is great interest to further understand the pathophysiologic mechanisms underlying endothelial dysfunction and atherosclerosis progression, and to identify novel biomarkers and therapeutic strategies to prevent endothelial dysfunction, atherosclerosis and to reduce the risk of developing CAD and its complications. The use of liquid biopsies and new molecular biology techniques have allowed the identification of a growing list of molecular and cellular markers of endothelial dysfunction, which have provided insight on the molecular basis of atherosclerosis and are potential biomarkers and therapeutic targets for the prevention and or treatment of atherosclerosis and CAD. This review describes recent information on normal vascular endothelium function, as well as traditional and novel potential biomarkers of endothelial dysfunction and inflammation, and pharmacological and non-pharmacological therapeutic strategies aimed to protect the endothelium or reverse endothelial damage, as a preventive treatment for CAD and related complications.
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Affiliation(s)
- Diana Jhoseline Medina-Leyte
- Genomics of Cardiovascular Diseases Laboratory, National Institute of Genomic Medicine (INMEGEN), Mexico City 14610, Mexico; (D.J.M.-L.); (O.Z.-G.); (M.D.-P.); (A.G.-G.); (T.V.-M.)
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México (UNAM), Coyoacán, Mexico City 04510, Mexico
| | - Oscar Zepeda-García
- Genomics of Cardiovascular Diseases Laboratory, National Institute of Genomic Medicine (INMEGEN), Mexico City 14610, Mexico; (D.J.M.-L.); (O.Z.-G.); (M.D.-P.); (A.G.-G.); (T.V.-M.)
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México (UNAM), Coyoacán, Mexico City 04510, Mexico
| | - Mayra Domínguez-Pérez
- Genomics of Cardiovascular Diseases Laboratory, National Institute of Genomic Medicine (INMEGEN), Mexico City 14610, Mexico; (D.J.M.-L.); (O.Z.-G.); (M.D.-P.); (A.G.-G.); (T.V.-M.)
| | - Antonia González-Garrido
- Genomics of Cardiovascular Diseases Laboratory, National Institute of Genomic Medicine (INMEGEN), Mexico City 14610, Mexico; (D.J.M.-L.); (O.Z.-G.); (M.D.-P.); (A.G.-G.); (T.V.-M.)
| | - Teresa Villarreal-Molina
- Genomics of Cardiovascular Diseases Laboratory, National Institute of Genomic Medicine (INMEGEN), Mexico City 14610, Mexico; (D.J.M.-L.); (O.Z.-G.); (M.D.-P.); (A.G.-G.); (T.V.-M.)
| | - Leonor Jacobo-Albavera
- Genomics of Cardiovascular Diseases Laboratory, National Institute of Genomic Medicine (INMEGEN), Mexico City 14610, Mexico; (D.J.M.-L.); (O.Z.-G.); (M.D.-P.); (A.G.-G.); (T.V.-M.)
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Nash M, McGrath JP, Cartland SP, Patel S, Kavurma MM. Tumour necrosis factor superfamily members in ischaemic vascular diseases. Cardiovasc Res 2020; 115:713-720. [PMID: 30816914 DOI: 10.1093/cvr/cvz042] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 09/25/2018] [Accepted: 02/26/2019] [Indexed: 12/20/2022] Open
Abstract
Current treatment of ischaemic vascular diseases such as coronary and peripheral artery disease includes angioplasty and bypass grafting, as well as lipid lowering therapies and control of other cardiovascular risk factors. Numerous members of the tumour necrosis factor superfamily (TNFSF) have recently shown emerging roles in both the protection and progression of such diseases. Understanding the role TNFSF members play in ischaemic vascular disease may provide insight into the development of novel therapeutics to prevent or treat diseases relating to atherosclerosis and ischaemia. This review summarizes the most recent findings relating to TNFSF members and the mechanisms that precede ischaemic vascular disease progression, particularly endothelial dysfunction, chronic inflammation, and atherosclerotic plaque development. This review also explores recent translational research on the role of TNFSF therapies in cardiovascular disease.
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Affiliation(s)
- Megan Nash
- Heart Research Institute, 7 Eliza Street, Newtown, Sydney NSW, Australia.,School of Medical Sciences, University of Sydney, Camperdown, NSW, Australia.,Department of Biochemistry, University of Bath, Bath, UK
| | - Jordan P McGrath
- Department of Cardiology, Royal Prince Alfred Hospital, Missenden Rd Camperdown, NSW, Australia
| | - Siân P Cartland
- Heart Research Institute, 7 Eliza Street, Newtown, Sydney NSW, Australia.,School of Medical Sciences, University of Sydney, Camperdown, NSW, Australia
| | - Sanjay Patel
- Heart Research Institute, 7 Eliza Street, Newtown, Sydney NSW, Australia.,School of Medical Sciences, University of Sydney, Camperdown, NSW, Australia.,Department of Cardiology, Royal Prince Alfred Hospital, Missenden Rd Camperdown, NSW, Australia
| | - Mary M Kavurma
- Heart Research Institute, 7 Eliza Street, Newtown, Sydney NSW, Australia.,School of Medical Sciences, University of Sydney, Camperdown, NSW, Australia
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5
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Zhang L, Wang X, Zhang L, Virgous C, Si H. Combination of curcumin and luteolin synergistically inhibits TNF-α-induced vascular inflammation in human vascular cells and mice. J Nutr Biochem 2019; 73:108222. [DOI: 10.1016/j.jnutbio.2019.108222] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/01/2019] [Accepted: 07/30/2019] [Indexed: 01/24/2023]
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Abstract
The advent of biologic therapy has enhanced our ability to augment disease in an increasingly targeted manner. The use of biologics in cardiovascular disease (CVD) has steadily increased over the past several decades. Much of the early data on biologics and CVD were derived from their use in rheumatologic populations. Atherosclerosis, myocardial infarction, and heart failure have been closely linked to the inflammatory response. Accordingly, cytokines such as tumor necrosis factor (TNF)-alpha and interleukin (IL)-1 have been targeted. Noninflammatory mediators, such as proprotein convertase subtilisin kexin type 9 (PCSK9), have been selected for therapeutic intervention as well. Furthermore, RNA interference (RNAi) therapy has emerged and may serve as another targeted therapeutic mechanism. Herein, we will review the history, obstacles, and advances in using biologic therapy for CVD.
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7
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Abstract
The master pro-inflammatory cytokine, tumour necrosis factor (TNF), has been shown to modulate multiple signalling pathways, with wide-ranging downstream effects. TNF plays a vital role in the typical immune response through the regulation of a number of pathways encompassing an immediate inflammatory reaction with significant innate immune involvement as well as cellular activation with subsequent proliferation and programmed cell death or necrosis. As might be expected with such a broad spectrum of cellular effects and complex signalling pathways, TNF has also been implicated in a number of disease states, such as rheumatoid arthritis, ankylosing spondylitis, and Crohn’s disease. Since the time of its discovery over 40 years ago, TNF ligand and its receptors, TNF receptor (TNFR) 1 and 2, have been categorised into two complementary superfamilies, namely TNF (TNFSF) and TNFR (TNFRSF), and 19 ligands and 29 receptors have been identified to date. There have been significant advances in our understanding of TNF signalling pathways in the last decade, and this short review aims to elucidate some of the most recent advances involving TNF signalling in health and disease.
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Affiliation(s)
- Jonathan Holbrook
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), Leeds, UK.,Leeds Institute of Medical Research at St. James's, Leeds, UK.,Leeds Cystic Fibrosis Trust Strategic Research Centre, Leeds, UK
| | - Samuel Lara-Reyna
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), Leeds, UK.,Leeds Institute of Medical Research at St. James's, Leeds, UK.,Leeds Cystic Fibrosis Trust Strategic Research Centre, Leeds, UK
| | - Heledd Jarosz-Griffiths
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), Leeds, UK.,Leeds Institute of Medical Research at St. James's, Leeds, UK.,Leeds Cystic Fibrosis Trust Strategic Research Centre, Leeds, UK
| | - Michael McDermott
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), Leeds, UK.,Leeds Cystic Fibrosis Trust Strategic Research Centre, Leeds, UK
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8
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Shen YL, Shi YZ, Chen GG, Wang LL, Zheng MZ, Jin HF, Chen YY. TNF-α induces Drp1-mediated mitochondrial fragmentation during inflammatory cardiomyocyte injury. Int J Mol Med 2018; 41:2317-2327. [PMID: 29336470 DOI: 10.3892/ijmm.2018.3385] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 01/09/2018] [Indexed: 11/06/2022] Open
Abstract
Dynamin-related peptide 1 (Drpl)-mediated mitochondrial fission is an important process associated with cardiac dysfunction under different pathological conditions. The aim of the present study was to investigate the expression of Drpl during inflammatory myocardial injury. Sprague‑Dawley rats were treated intraperitoneally with lipopolysaccharides (LPS). Furthermore, cultured H9C2 cardiomyocytes were treated with LPS, interleukin‑6 (IL‑6) and tumor necrosis factor‑α (TNF‑α). Total and mitochondrial proteins were isolated from the heart tissue of rats and from the H9C2 cardiomyocytes. Expression levels of Drp1 and RhoA were analyzed by western blotting. Mitochondrial morphology was determined using confocal laser microscopy. The levels of mitochondrial Drp1 and phosphorylated‑Drp1 (p‑Drp1) Ser616 were revealed to be increased in rats 6 h after injection with LPS (5, 10 or 20 mg/kg). Furthermore, treatment with LPS and IL‑6 did not demonstrate a significant effect on the expression of total and mitochondrial Drp1 in H9C2 cardiomyocytes in vitro; however, treatment with TNF‑α (20 ng/ml) significantly enhanced the levels of mitochondrial Drp1 and p‑Drp1 Ser616. Following TNF‑α treatment, the expression of Ras homolog gene family member A (RhoA) was also revealed to increase. Treatment with both Y‑27632 and fasudil, [Rho kinase (ROCK) inhibitors], was demonstrated to attenuate the otherwise TNF‑α‑induced increase in p‑Drp1 Ser616 and mitochondrial Drp1. In addition, it was revealed that Y‑27632 and fasudil may also attenuate the TNF‑α‑induced increase in mitochondrial fragmentation and cell viability. Therefore, the findings of the present study suggest that TNF‑α is the predominant inducer of Drp1 S616 phosphorylation during sepsis. The results of the present study also suggest that the RhoA/ROCK pathway may be involved in the phosphorylation and mitochondrial translocation of Drp1, which leads to mitochondrial fragmentation.
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Affiliation(s)
- Yue-Liang Shen
- Department of Pathology and Pathophysiology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Ying-Zhou Shi
- Department of Pathology and Pathophysiology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Gai-Ge Chen
- Department of Pathology and Pathophysiology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Lin-Lin Wang
- Center for Stem Cell and Tissue Engineering, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Ming-Zhi Zheng
- Department of Pharmacology, Hangzhou Medical College, Hangzhou, Zhejiang 310053, P.R. China
| | - Hong-Feng Jin
- Department of Cardiology, Zhejiang Hospital, Hangzhou, Zhejiang 310013, P.R. China
| | - Ying-Ying Chen
- Department of Pathology and Pathophysiology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
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Guo D, Lu M, Hu X, Xu J, Hu G, Zhu M, Zhang X, Li Q, Chang CCY, Chang T, Song B, Xiong Y, Li B. Low-level expression of human ACAT2 gene in monocytic cells is regulated by the C/EBP transcription factors. Acta Biochim Biophys Sin (Shanghai) 2016; 48:980-989. [PMID: 27688151 PMCID: PMC5091289 DOI: 10.1093/abbs/gmw091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 08/18/2016] [Accepted: 07/15/2016] [Indexed: 01/15/2023] Open
Abstract
Acyl-coenzyme A:cholesterol acyltransferases (ACATs) are the exclusive intracellular enzymes that catalyze the formation of cholesteryl/steryl esters (CE/SE). In our previous work, we found that the high-level expression of human ACAT2 gene with the CpG hypomethylation of its whole promoter was synergistically regulated by two transcription factors Cdx2 and HNF1α in the intestine and fetal liver. Here, we first observed that the specific CpG-hypomethylated promoter was correlated with the low expression of human ACAT2 gene in monocytic cell line THP-1. Then, two CCAAT/enhancer binding protein (C/EBP) elements within the activation domain in the specific CpG-hypomethylation promoter region were identified, and the expression of ACAT2 in THP-1 cells was evidently decreased when the C/EBP transcription factors were knock-downed using RNAi technology. Furthermore, ChIP assay confirmed that C/EBPs directly bind to their elements for low-level expression of human ACAT2 gene in THP-1 cells. Significantly, the increased expressions of ACAT2 and C/EBPs were also found in macrophages differentiated from both ATRA-treated THP-1 cells and cultured human blood monocytes. These results demonstrate that the low-level expression of human ACAT2 gene with specific CpG-hypomethylated promoter is regulated by the C/EBP transcription factors in monocytic cells, and imply that the lowly expressed ACAT2 catalyzes the synthesis of certain CE/SE that are assembled into lipoproteins for the secretion.
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Affiliation(s)
- Dongqing Guo
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Ming Lu
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Xihan Hu
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Jiajia Xu
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Guangjing Hu
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Ming Zhu
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Xiaowei Zhang
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Qin Li
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Catherine C Y Chang
- Department of Biochemistry, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - Tayuan Chang
- Department of Biochemistry, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - Baoliang Song
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
- College of Life Sciences, The Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Ying Xiong
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Boliang Li
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
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Guo D, Zhang X, Li Q, Qian L, Xu J, Lu M, Hu X, Zhu M, Chang CCY, Song B, Chang T, Xiong Y, Li B. The ACAT2 expression of human leukocytes is responsible for the excretion of lipoproteins containing cholesteryl/steryl esters. Acta Biochim Biophys Sin (Shanghai) 2016; 48:990-997. [PMID: 27688150 PMCID: PMC5091290 DOI: 10.1093/abbs/gmw095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 08/24/2016] [Accepted: 06/30/2016] [Indexed: 12/19/2022] Open
Abstract
Acyl-coenzymeA:cholesterol acyltransferase 2 (ACAT2) is abundantly expressed in intestine and fetal liver of healthy human. Our previous studies have shown that in monocytic cells the low-level expression of human ACAT2 gene with specific CpG-hypomethylated promoter is regulated by the CCAAT/enhancer binding protein (C/EBP) transcription factors. In this study, we further report that the ACAT2 gene expression is attributable to the C/EBPs in the human leukocytes and correlated with the excretion of fluorescent lipoproteins containing the ACAT2-catalyzed NBD22-steryl esters. Moreover, this lipoprotein excretion can be inhibited by the ACAT2 isoform-selective inhibitor pyripyropene A (PPPA) in a dose-dependent manner, and employed to determine the half maximum inhibitory concentration (IC50) values of PPPA. Significantly, it is found that the differentiation-inducing factor all-trans retinoic acid, but not the proinflammatory cytokine tumor necrosis factor-α, enhances this ACAT2-dependent lipoprotein excretion. These data demonstrate that the ACAT2 expression of human leukocytes is responsible for the excretion of lipoproteins containing cholesteryl/steryl esters (CE/SE), and suggest that the excretion of lipoproteins containing the ACAT2-catalyzed CS/SE may avoid cytotoxicity through decreasing the excess intracellular cholesterols/sterols (especially various oxysterols), which is essential for the action of the human leukocytes.
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Affiliation(s)
- Dongqing Guo
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Xiaowei Zhang
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Qin Li
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Lei Qian
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Jiajia Xu
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Ming Lu
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Xihan Hu
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Ming Zhu
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Catherine C Y Chang
- Department of Biochemistry, Geisel School of Medicine at Dartmouth, Hanover NH 03755, USA
| | - Baoliang Song
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
- College of Life Sciences, The Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Tayuan Chang
- Department of Biochemistry, Geisel School of Medicine at Dartmouth, Hanover NH 03755, USA
| | - Ying Xiong
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Boliang Li
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
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Vasilyeva EF, Kushner SG, Factor MI, Omelchenko MA, Bogdanova ED, Petrakova LN, Brusov OS. The cellular factors of innate immunity in nonpsychotic patients at high risk for schizophrenia. Zh Nevrol Psikhiatr Im S S Korsakova 2016; 116:60-65. [DOI: 10.17116/jnevro201611610160-65] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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