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Chen YG, Dombaxe C, D'Amato AR, Van Herck S, Welch H, Fu Q, Zhang S, Wang Y. Transformation of metallo-elastomer grafts in a carotid artery interposition model over a year. Biomaterials 2024; 309:122598. [PMID: 38696943 DOI: 10.1016/j.biomaterials.2024.122598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/04/2024]
Abstract
Current vascular grafts, primarily Gore-Tex® and Dacron®, don't integrate with the host and have low patency in small-diameter vessels (<6 mm). Biomaterials that possess appropriate viscoelasticity, compliance, and high biocompatibility are essential for their application in small blood vessels. We have developed metal ion crosslinked poly(propanediol-co-(hydroxyphenyl methylene)amino-propanediol sebacate) (M-PAS), a biodegradable elastomer with a wide range of mechanical properties. We call these materials metallo-elastomers. An initial test on Zn-, Fe-, and Cu-PAS grafts reveals that Cu-PAS is the most suitable because of its excellent elastic recoil and well-balanced polymer degradation/tissue regeneration rate. Here we report host remodeling of Cu-PAS vascular grafts in rats over one year. 76 % of the grafts remain patent and >90 % of the synthetic polymer is degraded by 12 months. Extensive cell infiltration leads to a positive host remodeling. The remodeled grafts feature a fully endothelialized lumen. Circumferentially organized smooth muscle cells, elastin fibers, and widespread mature collagen give the neoarteries mechanical properties similar to native arteries. Proteomic analysis further reveals the presence of important vascular proteins in the neoarteries. Evidence suggests that Cu-PAS is a promising material for engineering small blood vessels.
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Affiliation(s)
- Ying Grace Chen
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14850, USA
| | - Catia Dombaxe
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14850, USA
| | | | - Simon Van Herck
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14850, USA
| | - Halle Welch
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14850, USA
| | - Qin Fu
- Proteomics and Metabolomics Facility, Institute of Biotechnology, Cornell University, Ithaca, NY, 14850, USA
| | - Sheng Zhang
- Proteomics and Metabolomics Facility, Institute of Biotechnology, Cornell University, Ithaca, NY, 14850, USA
| | - Yadong Wang
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14850, USA.
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2
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Hu K, Zhong L, Lin W, Zhao G, Pu W, Feng Z, Zhou M, Ding J, Zhang J. Pathogenesis-Guided Rational Engineering of Nanotherapies for the Targeted Treatment of Abdominal Aortic Aneurysm by Inhibiting Neutrophilic Inflammation. ACS NANO 2024; 18:6650-6672. [PMID: 38369729 DOI: 10.1021/acsnano.4c00120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Abdominal aortic aneurysm (AAA) remains a fatal disease in the elderly. Currently, no drugs can be clinically used for AAA therapy. Considering the pivotal role of neutrophils in the pathogenesis of AAA, herein we propose the targeted therapy of AAA by site-specifically regulating neutrophilic inflammation. Based on a luminol-conjugated α-cyclodextrin material (LaCD), intrinsically anti-inflammatory nanoparticles (NPs) were engineered by simple nanoprecipitation, which were examined as a nanotherapy (defined as LaCD NP). After efficient accumulation in the aneurysmal aorta and localization in pathologically relevant inflammatory cells in rats with CaCl2-induced AAA, LaCD NP significantly alleviated AAA progression, as implicated by the decreased aortic expansion, suppressed elastin degradation, inhibited calcification, and improved structural integrity of the abdominal aorta. By functionalizing LaCD NP with alendronate, a calcification-targeting moiety, the in vivo aneurysmal targeting capability of LaCD NP was considerably enhanced, thereby affording significantly potentiated therapeutic outcomes in AAA rats. Mechanistically, LaCD NP can effectively inhibit neutrophil-mediated inflammatory responses in the aneurysmal aorta. Particularly, LaCD NP potently attenuated the formation of neutrophil extracellular traps (NETs), thereby suppressing NETs-mediated pro-inflammatory events and NETosis-associated negative effects responsible for AAA progression. Consequently, we demonstrated the effectiveness and underlying mechanisms of anti-NETosis nanotherapies for the targeted treatment of AAA. Our findings provide promising insights into discovering precision therapies for AAA and other inflammatory vascular diseases.
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Affiliation(s)
- Kaiyao Hu
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Ling Zhong
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Wenjie Lin
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Guanli Zhao
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Wendan Pu
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Zhiqiang Feng
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Min Zhou
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Jun Ding
- Department of Ultrasound, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
| | - Jianxiang Zhang
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
- State Key Laboratory of Trauma and Chemical Poisoning, Third Military Medical University (Army Medical University), Chongqing 400038, People's Republic of China
- Yu-Yue Pathology Scientific Research Center, 313 Gaoteng Avenue, Jiulongpo District, Chongqing 400039, People's Republic of China
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Jadli A, Gomes K, Ballasy N, Wijesuriya T, Belke D, Fedak P, Patel V. Inhibition of smooth muscle cell death by Angiotensin 1-7 protects against abdominal aortic aneurysm. Biosci Rep 2023; 43:BSR20230718. [PMID: 37947205 PMCID: PMC10695742 DOI: 10.1042/bsr20230718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023] Open
Abstract
Abdominal aortic aneurysm (AAA) represents a debilitating vascular disease characterized by aortic dilatation and wall rupture if it remains untreated. We aimed to determine the effects of Ang 1-7 in a murine model of AAA and to investigate the molecular mechanisms involved. Eight- to 10-week-old apolipoprotein E-deficient mice (ApoEKO) were infused with Ang II (1.44 mg/kg/day, s.c.) and treated with Ang 1-7 (0.576 mg/kg/day, i.p.). Echocardiographic and histological analyses showed abdominal aortic dilatation and extracellular matrix remodeling in Ang II-infused mice. Treatment with Ang 1-7 led to suppression of Ang II-induced aortic dilatation in the abdominal aorta. The immunofluorescence imaging exhibited reduced smooth muscle cell (SMC) density in the abdominal aorta. The abdominal aortic SMCs from ApoEKO mice exhibited markedly increased apoptosis in response to Ang II. Ang 1-7 attenuated cell death, as evident by increased SMC density in the aorta and reduced annexin V/propidium iodide-positive cells in flow cytometric analysis. Gene expression analysis for contractile and synthetic phenotypes of abdominal SMCs showed preservation of contractile phenotype by Ang 1-7 treatment. Molecular analyses identified increased mitochondrial fission, elevated cellular and mitochondrial reactive oxygen species (ROS) levels, and apoptosis-associated proteins, including cytochrome c, in Ang II-treated aortic SMCs. Ang 1-7 mitigated Ang II-induced mitochondrial fission, ROS generation, and levels of pro-apoptotic proteins, resulting in decreased cell death of aortic SMCs. These results highlight a critical vasculo-protective role of Ang 1-7 in a degenerative aortic disease; increased Ang 1-7 activity may provide a promising therapeutic strategy against the progression of AAA.
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Affiliation(s)
- Anshul S. Jadli
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
| | - Karina P. Gomes
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
| | - Noura N. Ballasy
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
| | - Tishani Methsala Wijesuriya
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
| | - Darrell Belke
- Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
- Section of Cardiac Surgery, Department of Cardiac Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Paul W.M. Fedak
- Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
- Section of Cardiac Surgery, Department of Cardiac Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Vaibhav B. Patel
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
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Wang JC, Tsai SH, Chien WC, Chung CH, Lin SJ, Chen YT, Huang PH. Association between gout and abdominal aortic aneurysm. J Cardiol 2023; 82:274-278. [PMID: 37149284 DOI: 10.1016/j.jjcc.2023.04.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/15/2023] [Accepted: 04/28/2023] [Indexed: 05/08/2023]
Abstract
BACKGROUND Previous studies have shown an association between hyperuricemia and microvascular diseases, but the association between uric acid and abdominal aortic aneurysm (AAA) remains unclear. The aim of this study was to determine the relationship between gout and AAA. METHODS A population-based cohort study was conducted to validate the association between gout and AAA formation. The outcome in this study was the cumulative incidence of AAA in patients with or without gout during the 14-year follow-up period. RESULTS Our analysis included 121,236 patients with gout and 121,236 propensity score-matched controls from the National Health Insurance Research Database in Taiwan. Compared to the controls, patients who had gout exhibited a significantly increased incidence of AAA development [adjusted hazard ratio (HR) = 2.465, p < 0.001]. We also found that patients who were treated with anti-gout medications had a significantly lower risk of being diagnosed with an AAA than patients who were not treated with anti-gout medications (adjusted HR = 0.489, p < 0.001). CONCLUSIONS We have provided clinical evidence that gout is associated with the development of AAA.
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Affiliation(s)
- Jen-Chun Wang
- Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan; Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Shih-Hung Tsai
- Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
| | - Wu-Chien Chien
- Department of Medical Research, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan; School of Public Health, National Defense Medical Center, Taipei, Taiwan; Taiwanese Injury Prevention and Safety Promotion Association, Taipei, Taiwan
| | - Chi-Hsiang Chung
- Department of Medical Research, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan; School of Public Health, National Defense Medical Center, Taipei, Taiwan; Taiwanese Injury Prevention and Safety Promotion Association, Taipei, Taiwan
| | - Shing-Jong Lin
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Cardiovascular Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan; Taipei Heart Institute, Taipei Medical University, Taipei, Taiwan
| | - Yung-Tai Chen
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Po-Hsun Huang
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Cardiovascular Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Critical Care Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
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Hofmann A, Khorzom Y, Klimova A, Wolk S, Busch A, Sabarstinski P, Müglich M, Egorov D, Kopaliani I, Poitz DM, Kapalla M, Hamann B, Frank F, Jänichen C, Brunssen C, Morawietz H, Reeps C. Associations of Tissue and Soluble LOX-1 with Human Abdominal Aortic Aneurysm. J Am Heart Assoc 2023:e027537. [PMID: 37421287 PMCID: PMC10382096 DOI: 10.1161/jaha.122.027537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 05/04/2023] [Indexed: 07/10/2023]
Abstract
Background Indication for prophylactic surgical abdominal aortic aneurysm (AAA) repair depends on the maximal aortic diameter. The lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) is the major receptor for uptake of oxidized low-density lipoprotein cholesterol and is implicated in atherosclerosis. A soluble form of LOX-1 (sLOX-1) has been discussed as a novel biomarker in coronary artery disease and stroke. Herein, we assessed the regulation of aortic LOX-1 as well as the diagnostic and risk stratification potential of sLOX-1 in patients with AAA. Methods and Results Serum sLOX-1 was assessed in a case-control study in AAA (n=104) and peripheral artery disease (n=104). sLOX-1 was not statistically different between AAA and peripheral artery disease but was higher in AAA (β=1.28, P=0.04) after adjusting for age, atherosclerosis, type 2 diabetes, prescription of statins, β-blockers, ACE inhibitors, and therapeutic anticoagulation. sLOX-1 was not associated with the aortic diameter, AAA volume, or the thickness of the intraluminal thrombus. Aortic LOX-1 mRNA expression tended to be higher in AAA when compared with disease, and expression was positively associated with cleaved caspase-3, smooth muscle actin, collagen, and macrophage content. Conclusions In AAA, sLOX-1 was differently affected by age, cardiometabolic diseases, and corresponding medical therapies. Comparison with nonatherosclerotic disease would be beneficial to further elucidate the diagnostic potential of sLOX-1, although it was not useful for risk stratification. Aneurysmal LOX-1 mRNA expression was increased and positively associated with smooth muscle cells and collagen content, suggesting that LOX-1 is eventually not deleterious in human AAA and could counteract AAA rupture.
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Affiliation(s)
- Anja Hofmann
- Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery Faculty of Medicine andUniversity Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Yazan Khorzom
- Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery Faculty of Medicine andUniversity Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Anna Klimova
- National Center for Tumor Diseases, Partner Site Dresden and Institute for Medical Informatics and Biometry, Faculty of Medicine Technische Universität Dresden Dresden Germany
| | - Steffen Wolk
- Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery Faculty of Medicine andUniversity Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Albert Busch
- Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery Faculty of Medicine andUniversity Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Pamela Sabarstinski
- Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery Faculty of Medicine andUniversity Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Margarete Müglich
- Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery Faculty of Medicine andUniversity Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Dmitry Egorov
- Department of Physiology, Medical Faculty Carl Gustav Carus Technische Universität Dresden Germany
| | - Irakli Kopaliani
- Department of Physiology, Medical Faculty Carl Gustav Carus Technische Universität Dresden Germany
| | - David M Poitz
- Institute of Clinical Chemistry and Laboratory Medicine Medical Faculty Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Marvin Kapalla
- Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery Faculty of Medicine andUniversity Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Bianca Hamann
- Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery Faculty of Medicine andUniversity Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Frieda Frank
- Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery Faculty of Medicine andUniversity Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Christian Jänichen
- Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery Faculty of Medicine andUniversity Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Coy Brunssen
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Henning Morawietz
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
| | - Christian Reeps
- Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery Faculty of Medicine andUniversity Hospital Carl Gustav Carus, Technische Universität Dresden Dresden Germany
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Gueldner PH, Marini AX, Li B, Darvish CJ, Chung TK, Weinbaum JS, Curci JA, Vorp DA. Mechanical and matrix effects of short and long-duration exposure to beta-aminopropionitrile in elastase-induced model abdominal aortic aneurysm in mice. JVS Vasc Sci 2023; 4:100098. [PMID: 37152846 PMCID: PMC10160690 DOI: 10.1016/j.jvssci.2023.100098] [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: 08/23/2022] [Accepted: 12/23/2022] [Indexed: 02/19/2023] Open
Abstract
Objective Evaluate the mechanical and matrix effects on abdominal aortic aneurysms (AAA) during the initial aortic dilation and after prolonged exposure to beta-aminopropionitrile (BAPN) in a topical elastase AAA model. Methods Abdominal aortae of C57/BL6 mice were exposed to topical elastase with or without BAPN in the drinking water starting 4 days before elastase exposure. For the standard AAA model, animals were harvested at 2 weeks after active elastase (STD2) or heat-inactivated elastase (SHAM2). For the enhanced elastase model, BAPN treatment continued for either 4 days (ENH2b) or until harvest (ENH2) at 2 weeks; BAPN was continued until harvest at 8 weeks in one group (ENH8). Each group underwent assessment of aortic diameter, mechanical testing (tangent modulus and ultimate tensile strength [UTS]), and quantification of insoluble elastin and bulk collagen in both the elastase exposed aorta as well as the descending thoracic aorta. Results BAPN treatment did not increase aortic dilation compared with the standard model after 2 weeks (ENH2, 1.65 ± 0.23 mm; ENH2b, 1.49 ± 0.39 mm; STD2, 1.67 ± 0.29 mm; and SHAM2, 0.73 ± 0.10 mm), but did result in increased dilation after 8 weeks (4.3 ± 2.0 mm; P = .005). After 2 weeks, compared with the standard model, continuous therapy with BAPN did not have an effect on UTS (24.84 ± 7.62 N/cm2; 18.05 ± 4.95 N/cm2), tangent modulus (32.60 ± 9.83 N/cm2; 26.13 ± 9.10 N/cm2), elastin (7.41 ± 2.43%; 7.37 ± 4.00%), or collagen (4.25 ± 0.79%; 5.86 ± 1.19%) content. The brief treatment, EHN2b, resulted in increased aortic collagen content compared with STD2 (7.55 ± 2.48%; P = .006) and an increase in UTS compared with ENH2 (35.18 ± 18.60 N/cm2; P = .03). The ENH8 group had the lowest tangent modulus (3.71 ± 3.10 N/cm2; P = .005) compared with all aortas harvested at 2 weeks and a lower UTS (2.18 ± 2.18 N/cm2) compared with both the STD2 (24.84 ± 7.62 N/cm2; P = .008) and ENH2b (35.18 ± 18.60 N/cm2; P = .001) groups. No differences in the mechanical properties or matrix protein concentrations were associated with abdominal elastase exposure or BAPN treatment for the thoracic aorta. The tangent modulus was higher in the STD2 group (32.60 ± 9.83 N/cm2; P = .0456) vs the SHAM2 group (17.99 ± 5.76 N/cm2), and the UTS was lower in the ENH2 group (18.05 ± 4.95 N/cm2; P = .0292) compared with the ENH2b group (35.18 ± 18.60 N/cm2). The ENH8 group had the lowest tangent modulus (3.71 ± 3.10 N/cm2; P = .005) compared with all aortas harvested at 2 weeks and a lower UTS (2.18 ± 2.18 N/cm2) compared with both the STD2 (24.84 ± 7.62 N/cm2; P = .008) and ENH2b (35.18 ± 18.60 N/cm2; P = .001) groups. Abdominal aortic elastin in the STD2 group (7.41 ± 2.43%; P = .035) was lower compared with the SHAM2 group (15.29 ± 7.66%). Aortic collagen was lower in the STD2 group (4.25 ± 0.79%; P = .007) compared with the SHAM2 group (12.44 ± 6.02%) and higher for the ENH2b (7.55 ± 2.48%; P = .006) compared with the STD2 group. Conclusions Enhancing an elastase AAA model with BAPN does not affect the initial (2-week) dilation phase substantially, either mechanically or by altering the matrix content. Late mechanical and matrix effects of prolonged BAPN treatment are limited to the elastase-exposed segment of the aorta. Clinical Relevance This paper explores the use of short- and long-term exposure to beta-aminopropionitrile to create an enhanced topical elastase abdominal aortic aneurysm model in mice. Readouts of aneurysm severity included loss of mechanical stability and vascular extracellular matrix composition reminiscent of what is seen in the course of human disease. Additionally, we show that the thoracic aorta, unlike the findings below the renal arteries, is not damaged in our animal model.
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Affiliation(s)
- Pete H. Gueldner
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA
| | - Ande X. Marini
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA
| | - Bo Li
- Department of Vascular Surgery, Vanderbilt University, Nashville, TN
| | - Cyrus J. Darvish
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA
| | - Timothy K. Chung
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA
| | - Justin S. Weinbaum
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA
| | - John A. Curci
- Department of Vascular Surgery, Vanderbilt University, Nashville, TN
| | - David A. Vorp
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA
- Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA
- Clinical & Translational Sciences Institute, University of Pittsburgh, Pittsburgh, PA
- Center for Vascular Remodeling and Regeneration, University of Pittsburgh, Pittsburgh, PA
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7
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Wang D, Hao X, Jia L, Jing Y, Jiang B, Xin S. Cellular senescence and abdominal aortic aneurysm: From pathogenesis to therapeutics. Front Cardiovasc Med 2022; 9:999465. [PMID: 36187019 PMCID: PMC9515360 DOI: 10.3389/fcvm.2022.999465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 08/15/2022] [Indexed: 01/10/2023] Open
Abstract
As China’s population enters the aging stage, the threat of abdominal aortic aneurysm (AAA) mainly in elderly patients is becoming more and more serious. It is of great clinical significance to study the pathogenesis of AAA and explore potential therapeutic targets. The purpose of this paper is to analyze the pathogenesis of AAA from the perspective of cellular senescence: on the basis of clear evidence of cellular senescence in aneurysm wall, we actively elucidate specific molecular and regulatory pathways, and to explore the targeted drugs related to senescence and senescent cells eliminate measures, eventually improve the health of patients with AAA and prolong the life of human beings.
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Affiliation(s)
- Ding Wang
- Department of Vascular Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Pathogenesis, Prevention and Therapeutics of Aortic Aneurysm, Shenyang, Liaoning, China
| | - Xinyu Hao
- Department of Vascular Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Pathogenesis, Prevention and Therapeutics of Aortic Aneurysm, Shenyang, Liaoning, China
| | - Longyuan Jia
- Department of Vascular Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Pathogenesis, Prevention and Therapeutics of Aortic Aneurysm, Shenyang, Liaoning, China
| | - Yuchen Jing
- Department of Vascular Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Pathogenesis, Prevention and Therapeutics of Aortic Aneurysm, Shenyang, Liaoning, China
| | - Bo Jiang
- Department of Vascular Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Pathogenesis, Prevention and Therapeutics of Aortic Aneurysm, Shenyang, Liaoning, China
| | - Shijie Xin
- Department of Vascular Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
- Key Laboratory of Pathogenesis, Prevention and Therapeutics of Aortic Aneurysm, Shenyang, Liaoning, China
- *Correspondence: Shijie Xin,
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Long Noncoding RNA SBF2-AS1 Promotes Abdominal Aortic Aneurysm Formation through the miRNA-520f-3p/SMARCD1 Axis. DISEASE MARKERS 2022; 2022:4782361. [PMID: 35968497 PMCID: PMC9374557 DOI: 10.1155/2022/4782361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/07/2022] [Accepted: 06/16/2022] [Indexed: 12/02/2022]
Abstract
Abdominal aortic aneurysm (AAA) is a chronic vascular inflammatory disease. The regulatory mechanisms during AAA formation remain unclear. Bone marrow stem cells (BMSCs) are pluripotent cells capable of regulating the progression of various diseases by delivering exosomes and exosomal lncRNAs. In this study, we investigated its function in AAA by isolating BMSC exosome-derived lncRNA SBF2-AS1. The results showed that BF2-AS1 could be transferred to vascular smooth muscle cells (VSMCs) and human aortic VSMCs (HASMCs) via BMSC-derived exosomes. Depletion of SBF2-AS1 enhanced the cell viability and proliferation of VSMCs. Conversely, SBF2-AS1 knockdown inhibited VSMC apoptosis. Caspase-3 activity was inhibited by depletion of SBF2-AS1, whereas overexpression of SBF2-AS1 in VSMC promoted Caspase-3 activity. SBF2-AS1 enhances SMARCD1 expression by forming miR-520f-3p in VSMC and HASMC. Overexpression of SMARCD1 or miR-520f-3p inhibitor reversed cell viability and caspase-3 activity mediated by SBF2-AS1 depletion in VSMC and HASMC. Therefore, BMSC exosome-derived SBF2-AS1 promotes AAA formation through the miRNA-520f-3p/SMARCD1 axis. Targeting SBF2-AS1 could serve as a promising therapeutic strategy for AAA.
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Wu TC, Chang WH, Lu HY, Shih CC. Tolvaptan reduces angiotensin II-induced experimental abdominal aortic aneurysm and dissection. Vascul Pharmacol 2022; 144:106973. [DOI: 10.1016/j.vph.2022.106973] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 01/13/2022] [Accepted: 02/23/2022] [Indexed: 11/25/2022]
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10
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Abdominal Aortic Aneurysm Formation with a Focus on Vascular Smooth Muscle Cells. Life (Basel) 2022; 12:life12020191. [PMID: 35207478 PMCID: PMC8880357 DOI: 10.3390/life12020191] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 12/29/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is a lethal degenerative vascular disease that affects, mostly, the elder population, with a high mortality rate (>80%) upon rupture. It features a dilation of the aortic diameter to larger than 30 mm or more than 50%. Diverse pathological processes are involved in the development of AAA, including aortic wall inflammation, elastin breakdown, oxidative stress, smooth muscle cell (SMC) phenotypic switching and dysfunction, and extracellular matrix degradation. With open surgery being the only therapeutic option up to date, the lack of pharmaceutical treatment approach calls for identifying novel and effective targets and further understanding the pathological process of AAA. Both lifestyle and genetic predisposition have an important role in increasing the risk of AAA. Several cell types are closely related to the pathogenesis of AAA. Among them, vascular SMCs (VSMCs) are gaining much attention as a critical contributor for AAA initiation and/or progression. In this review, we summarize what is known about AAA, including the risk factors, the pathophysiology, and the established animal models of AAA. In particular, we focus on the VSMC phenotypic switching and dysfunction in AAA formation. Further understanding the regulation of VSMC phenotypic changes may provide novel therapeutic targets for the treatment or prevention of AAA.
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11
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ARE SMALL POPLITEAL ANEURYSM SO INNOCENT? Ann Vasc Surg 2022; 84:265-269. [PMID: 34995741 DOI: 10.1016/j.avsg.2021.12.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/16/2021] [Accepted: 12/18/2021] [Indexed: 11/22/2022]
Abstract
OBJECTIVE We recently recorded 5 lower limb ischemia related to a small (diameter≤20 mm) popliteal artery aneurysm (PAA) thrombosis hence we performed a retrospective data analysis on small symptomatic PAA management from our database. METHODS We performed a retrospective cohort study on 48 acute leg ischemia from aneurysm's thrombosis. All of them underwent surgical distal thrombectomy and bypass creation. Patients were divided into two different cohorts: GROUP A (diameter ≥20mm) and GROUP B (diameter ≤20 mm). Differences in terms of the limb salvage (end-point: the amputation rate) was analyzed and considered significative for p≤0.05. Secondary objectives were: vessel runoff recovery and patency rate. Adverse events were collected at 12 and 24 months postoperative. RESULTS Two year overall amputation rate was: 22.9% (11/48); 21.8% (7/32) in GROUP A and 25% (4/16) in GROUP B (RR:0.87, CI:0.29-2.55, p.80). The mean age was 68±13 years, No statistically significant differences were identified in term of primary and secondary patency (RR:0.95, CI:0.55-1.6, p.85 and (RR:0.95, CI:0.53-1.7, p.88 respectively) no differences were found in terms of comorbidities. Patients' follow-up ranged from 8 to 36 months. . In 90% of those amputated patients, the length of ischemia exceeded 4 days.Amputation rate was correlated with one runoff vessel recovery, only. CONCLUSION According these results small PAA are not as innocent as it is often presumed and was associated with not negligible incidence of limb loss due to thrombosis or distal embolizations also if compared to larger aneurysm. The immediate surgery is mandatory also when the ischemia exceeds 2 days.
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12
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Ghio AJ, Pavlisko EN, Roggli VL, Todd NW, Sangani RG. Cigarette Smoke Particle-Induced Lung Injury and Iron Homeostasis. Int J Chron Obstruct Pulmon Dis 2022; 17:117-140. [PMID: 35046648 PMCID: PMC8763205 DOI: 10.2147/copd.s337354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 12/06/2021] [Indexed: 11/23/2022] Open
Abstract
It is proposed that the mechanistic basis for non-neoplastic lung injury with cigarette smoking is a disruption of iron homeostasis in cells after exposure to cigarette smoke particle (CSP). Following the complexation and sequestration of intracellular iron by CSP, the host response (eg, inflammation, mucus production, and fibrosis) attempts to reverse a functional metal deficiency. Clinical manifestations of this response can present as respiratory bronchiolitis, desquamative interstitial pneumonitis, pulmonary Langerhans’ cell histiocytosis, asthma, pulmonary hypertension, chronic bronchitis, and pulmonary fibrosis. If the response is unsuccessful, the functional deficiency of iron progresses to irreversible cell death evident in emphysema and bronchiectasis. The subsequent clinical and pathological presentation is a continuum of lung injuries, which overlap and coexist with one another. Designating these non-neoplastic lung injuries after smoking as distinct disease processes fails to recognize shared relationships to each other and ultimately to CSP, as well as the common mechanistic pathway (ie, disruption of iron homeostasis).
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Affiliation(s)
- Andrew J Ghio
- Human Studies Facility, US Environmental Protection Agency, Chapel Hill, NC, 27514, USA
- Correspondence: Andrew J Ghio Human Studies Facility, US Environmental Protection Agency, 104 Mason Farm Road, Chapel Hill, NC, USA Email
| | | | | | - Nevins W Todd
- Department of Medicine, University of Maryland, Baltimore, MD, 21201, USA
| | - Rahul G Sangani
- Department of Medicine, West Virginia University, Morgantown, WV, USA
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13
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Chronic Intermittent Hypoxia Regulates CaMKII-Dependent MAPK Signaling to Promote the Initiation of Abdominal Aortic Aneurysm. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2021:2502324. [PMID: 34970414 PMCID: PMC8714336 DOI: 10.1155/2021/2502324] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 11/15/2021] [Accepted: 11/24/2021] [Indexed: 02/05/2023]
Abstract
Obstructive sleep apnea (OSA) is highly prevalent in patients with abdominal aortic aneurysm (AAA). However, the effects of OSA on AAA initiation in a murine model of sleep apnea have not been completely studied. In this paper, Apoe−/− C57BL/6 mice infused with angiotensin II (Ang II) were placed in chronic intermittent hypoxia (CIH) condition for inducing OSA-related AAA. CIH significantly promoted the incidence of AAA and inhibited the survival of mice. By performing ultrasonography and elastic Van Gieson staining, CIH was found to be effective in promoting aortic dilation and elastin degradation. Immunohistochemical and zymography results show that CIH upregulated the expression and activity of MMP2 and MMP9 and upregulated MCP1 expression while downregulating α-SMA expression. Also, CIH exposure promoted ROS generation, apoptosis, and mitochondria damage in vascular smooth muscle cells (VSMCs), which were measured by ROS assay, TUNEL staining, and transmission electron microscopy. The result of RNA sequencing of mouse aortas displayed that 232 mRNAs were differently expressed between Ang II and Ang II+CIH groups, and CaMKII-dependent p38/Jnk was confirmed as one downstream signaling of CIH. CaMKII-IN-1, an inhibitor of CaMKII, eliminated the effects of CIH on the loss of primary VSMCs. To conclude, a mouse model of OSA-related AAA, which contains the phenotypes of both AAA and OSA, was established in this study. We suggested CIH as a risk factor of AAA initiation through CaMKII-dependent MAPK signaling.
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14
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Gan S, Mao J, Pan Y, Tang J, Qiu Z. hsa-miR-15b-5p regulates the proliferation and apoptosis of human vascular smooth muscle cells by targeting the ACSS2/PTGS2 axis. Exp Ther Med 2021; 22:1208. [PMID: 34584553 PMCID: PMC8422401 DOI: 10.3892/etm.2021.10642] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 05/12/2021] [Indexed: 12/11/2022] Open
Abstract
A previous bioinformatic analysis from our group predicted that the interaction of microRNA (miRNA/miR)-15b with the acyl-CoA synthetase short chain family member 2 (ACSS2) gene was important for the development of abdominal aortic aneurysm (AAA). Apoptosis of aortic vascular smooth muscle cells (VSMCs) is a pathological feature of AAA. The present study aimed to explain the roles of miR-15b/ACSS2 in AAA by exploring their effects on the proliferation and apoptosis of aortic VSMCs. Human aortic VSMCs (T/G HA-VSMC cell line) were divided into six groups and were transfected with miR-15b-5p mimics, mimic negative control (NC), miR-15b-5p inhibitors, inhibitor NC, miR-15b-5p mimics+pcDNA3.1 and miR-15b-5p mimics+ACSS2-overexpessing vector. CCK-8 assay was used to determine cell proliferation. Annexin V-FITC/PI staining and flow cytometry assays were used to measure cell apoptosis. Dual-luciferase reporter assays were used to confirm the targeted relationship between miR-15b-5p and ACSS2. Reverse transcription-quantitative PCR and/or western blotting were used to examine the expression levels of miR-15b-5p, ACSS2 and prostaglandin-endoperoxide synthase 2 (PTGS2). Following transfection of T/G HA-VSMCs with mimics and inhibitors to respectively upregulate and downregulate miR-15b-5p, the results demonstrated that overexpression of miR-15b-5p inhibited cell proliferation and promoted cell apoptosis; silencing of miR-15b-5p obtained the opposite results. ACSS2 may be a direct target of miR-15b-5p, since the luciferase activity of a ACSS2 wild-type vector, but not that of a ACSS2 mutant reporter, was significantly inhibited by miR-15b-5p mimics compared with controls. Additionally, the expression levels of ACSS2 and its downstream gene PTGS2 were significantly reduced or increased following transfection with miR-15b-5p mimics or inhibitors, respectively. Furthermore, overexpression of ACSS2 reversed the antiproliferative and proapoptotic effects of miR-15b-5p mimics by blocking the production of PTGS2 protein. In conclusion, miR-15b-5p may promote the apoptosis and inhibit the proliferation of aortic VSMCs via targeting the ACSS2/PTGS2 axis. The present study provided preliminary evidence indicating that the miR-15b-5p/ACSS2/PTGS2 axis may be a potential target for the treatment of AAA.
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Affiliation(s)
- Shujie Gan
- Department of Vascular Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
| | - Jieqi Mao
- Department of Vascular Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
| | - Yuqin Pan
- Department of Nursing, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
| | - Jingdong Tang
- Department of Vascular Surgery, Shanghai Pudong Hospital Affiliated to Fudan University, Shanghai 201399, P.R. China
| | - Zhengjun Qiu
- Department of Vascular Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
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15
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Elder CT, Filiberto AC, Su G, Ladd Z, Leroy V, Pruitt EY, Lu G, Jiang Z, Sharma AK, Upchurch GR. Maresin 1 activates LGR6 signaling to inhibit smooth muscle cell activation and attenuate murine abdominal aortic aneurysm formation. FASEB J 2021; 35:e21780. [PMID: 34320253 DOI: 10.1096/fj.202100484r] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 06/09/2021] [Accepted: 06/21/2021] [Indexed: 12/14/2022]
Abstract
The specialized pro-resolving lipid mediator maresin 1 (MaR1) is involved in the resolution phase of tissue inflammation. It was hypothesized that exogenous administration of MaR1 would attenuate abdominal aortic aneurysm (AAA) growth in a cytokine-dependent manner via LGR6 receptor signaling and macrophage-dependent efferocytosis of smooth muscle cells (SMCs). AAAs were induced in C57BL/6 wild-type (WT) mice and smooth muscle cell specific TGF-β2 receptor knockout (SMC-TGFβr2-/- ) mice using a topical elastase AAA model. MaR1 treatment significantly attenuated AAA growth as well as increased aortic SMC α-actin and TGF-β2 expressions in WT mice, but not SMC-TGFβr2-/- mice, compared to vehicle-treated mice. In vivo inhibition of LGR6 receptors obliterated MaR1-dependent protection in AAA formation and SMC α-actin expression. Furthermore, MaR1 upregulated macrophage-dependent efferocytosis of apoptotic SMCs in murine aortic tissue during AAA formation. In vitro studies demonstrate that MaR1-LGR6 interaction upregulates TGF-β2 expression and decreases MMP2 activity during crosstalk of macrophage-apoptotic SMCs. In summary, these results demonstrate that MaR1 activates LGR6 receptors to upregulate macrophage-dependent efferocytosis, increases TGF-β expression, preserves aortic wall remodeling and attenuate AAA formation. Therefore, this study demonstrates the potential of MaR1-LGR6-mediated mitigation of vascular remodeling through increased efferocytosis of apoptotic SMCs via TGF-β2 to attenuate AAA formation.
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Affiliation(s)
- Craig T Elder
- Department of Surgery, University of Florida, Gainesville, FL, USA
| | | | - Gang Su
- Department of Surgery, University of Florida, Gainesville, FL, USA
| | - Zachary Ladd
- Department of Surgery, University of Florida, Gainesville, FL, USA
| | - Victoria Leroy
- Department of Surgery, University of Florida, Gainesville, FL, USA
| | - Eric Y Pruitt
- Department of Surgery, University of Florida, Gainesville, FL, USA
| | - Guanyi Lu
- Department of Surgery, University of Florida, Gainesville, FL, USA
| | - Zhihua Jiang
- Department of Surgery, University of Florida, Gainesville, FL, USA
| | - Ashish K Sharma
- Department of Surgery, University of Florida, Gainesville, FL, USA
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16
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Potency of miR-144-3p in promoting abdominal aortic aneurysm progression in mice correlates with apoptosis of smooth muscle cells. Vascul Pharmacol 2021; 142:106901. [PMID: 34364983 DOI: 10.1016/j.vph.2021.106901] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 07/20/2021] [Accepted: 08/02/2021] [Indexed: 12/24/2022]
Abstract
Abdominal aortic aneurysm (AAA), a life-threatening disease, is commonly diagnosed among people with risk factors, including increasing age, male gender, and smoking. The apoptosis of smooth muscle cells (SMCs) has been reported to disrupt the vascular structural integrity, which causes AAA. Thus, we sought to characterize the potential role of microRNA (miR)-144-3p in SMC apoptosis, and to outline the molecular mechanisms involved in this pathway. We collected pathological abdominal aortic tissues and adjacent normal aortic biopsy specimens from 18 patients undergoing AAA repair surgery. The relationship between miR-144-3p expression and SMC proliferation was assessed by transfecting mimic/inhibitor of miR-144-3p in human aortic smooth muscle cells (HASMCs). Anti-growth effect of miR-144-3p and related genes was evaluated in a murine AAA model. Dual luciferase reporter gene assay was adopted to validate the targeting relationship between miR-144-3p and enhancer of zeste homolog 2 (EZH2), and the enrichment of EZH2 in the p21 promoter region was determined by chromatin immunoprecipitation assay. MiR-144-3p was highly expressed in AAA tissues. Enhanced miR-144-3p diminished SMC proliferation by binding to the EZH2 3'-untranslated region and thereby inhibiting EZH2 expression. In addition, EZH2 was highly enriched in the promoter region of p21, and knockdown of p21 expression could rescue the effect of miR-144-3p on SMC proliferation and apoptosis. miR-144-3p serves as a promoter for the apoptosis of SMCs, which contributes to the occurrence and progression of AAA. This observation will serve as the basis for further investigations into potential p21-based therapies for AAA treatment.
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17
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Silencing IL12p35 Promotes Angiotensin II-Mediated Abdominal Aortic Aneurysm through Activating the STAT4 Pathway. Mediators Inflamm 2021; 2021:9450843. [PMID: 34354545 PMCID: PMC8331298 DOI: 10.1155/2021/9450843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 07/01/2021] [Indexed: 02/07/2023] Open
Abstract
Background and Purpose. Abdominal aortic aneurysm (AAA) is a chronic inflammatory disorder and the important causes of death among men over the age of 65 years. Interleukin-12p35 (IL12p35) is an inflammatory cytokine that participates in a variety of inflammatory diseases. However, the role of IL12p35 in the formation and development of AAA is still unknown. Experimental Approach. Male apolipoprotein E-deficient (Apoe−/−) mice were generated and infused with 1.44 mg/kg angiotensin II (Ang II) per day. We found that IL12p35 expression was noticeably increased in the murine AAA aorta and isolated aortic smooth muscle cells (SMCs) after Ang II stimulation. IL12p35 silencing promoted Ang II-induced AAA formation and rupture in Apoe−/− mice. IL12p35 silencing markedly increased the expression of inflammatory cytokines, including IL-1β, IL-6, and tumor necrosis factor-α (TNF-α), in both the serum and AAA aorta. Additionally, IL12p35 silencing exacerbated SMC apoptosis in Apoe−/− mice after Ang II infusion. IL12p35 silencing significantly increased signal transducer and activator of transcription (STAT) 4 phosphorylation levels in AAA mice, and STAT4 knockdown abolished the IL12p35-mediated proinflammatory response and SMC apoptosis. Interpretation. Silencing IL12p35 promotes AAA formation by activating the STAT4 pathway, and IL12p35 may serve as a novel and promising therapeutic target for AAA treatment.
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18
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Burger J, Bogunovic N, de Wagenaar NP, Liu H, Vliet N, IJpma A, Maugeri A, Micha D, Verhagen HJM, Ten Hagen TLM, Majoor-Krakauer D, Pluijm I, Essers J, Yeung KK. Molecular phenotyping and functional assessment of smooth muscle like-cells with pathogenic variants in aneurysm genes ACTA2, MYH11, SMAD3 and FBN1. Hum Mol Genet 2021; 30:2286-2299. [PMID: 34244757 PMCID: PMC8600030 DOI: 10.1093/hmg/ddab190] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/25/2021] [Accepted: 07/05/2021] [Indexed: 11/30/2022] Open
Abstract
Aortic aneurysms (AAs) are pathological dilatations of the aorta. Pathogenic variants in genes encoding for proteins of the contractile machinery of vascular smooth muscle cells (VSMCs), genes encoding proteins of the transforming growth factor beta signaling pathway and extracellular matrix (ECM) homeostasis play a role in the weakening of the aortic wall. These variants affect the functioning of VSMC, the predominant cell type in the aorta. Many variants have unknown clinical significance, with unknown consequences on VSMC function and AA development. Our goal was to develop functional assays that show the effects of pathogenic variants in aneurysm-related genes. We used a previously developed fibroblast transdifferentiation protocol to induce VSMC-like cells, which are used for all assays. We compared transdifferentiated VSMC-like cells of patients with a pathogenic variant in genes encoding for components of VSMC contraction (ACTA2, MYH11), transforming growth factor beta (TGFβ) signaling (SMAD3) and a dominant negative (DN) and two haploinsufficient variants in the ECM elastic laminae (FBN1) to those of healthy controls. The transdifferentiation efficiency, structural integrity of the cytoskeleton, TGFβ signaling profile, migration velocity and maximum contraction were measured. Transdifferentiation efficiency was strongly reduced in SMAD3 and FBN1 DN patients. ACTA2 and FBN1 DN cells showed a decrease in SMAD2 phosphorylation. Migration velocity was impaired for ACTA2 and MYH11 cells. ACTA2 cells showed reduced contractility. In conclusion, these assays for showing effects of pathogenic variants may be promising tools to help reclassification of variants of unknown clinical significance in AA-related genes.
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Affiliation(s)
- Joyce Burger
- Department of Molecular Genetics, Oncode Institute, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Natalija Bogunovic
- Department of Surgery, Institute for Cardiovascular Research, Amsterdam University Medical Centers, location VU University Medical Center, Amsterdam, The Netherlands.,Department of Physiology, Institute for Cardiovascular Research, Amsterdam University Medical Centers, location VU University Medical Center, Amsterdam, The Netherlands.,Department of Clinical Genetics, MOVE Institute, Amsterdam University Medical Centers, location VU University Medical Center, Amsterdam, The Netherlands
| | - Nathalie P de Wagenaar
- Department of Molecular Genetics, Oncode Institute, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Radiation Oncology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Hui Liu
- Department of Pathology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Nicole Vliet
- Department of Molecular Genetics, Oncode Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Arne IJpma
- Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Bioinformatics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Alessandra Maugeri
- Department of Clinical Genetics, MOVE Institute, Amsterdam University Medical Centers, location VU University Medical Center, Amsterdam, The Netherlands
| | - Dimitra Micha
- Department of Clinical Genetics, MOVE Institute, Amsterdam University Medical Centers, location VU University Medical Center, Amsterdam, The Netherlands
| | - Hence J M Verhagen
- Department of Vascular Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Timo L M Ten Hagen
- Department of Pathology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | | | - Ingrid Pluijm
- Department of Molecular Genetics, Oncode Institute, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Pathology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Jeroen Essers
- Department of Molecular Genetics, Oncode Institute, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Vascular Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Radiation Oncology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Kak K Yeung
- Department of Surgery, Institute for Cardiovascular Research, Amsterdam University Medical Centers, location VU University Medical Center, Amsterdam, The Netherlands.,Department of Physiology, Institute for Cardiovascular Research, Amsterdam University Medical Centers, location VU University Medical Center, Amsterdam, The Netherlands
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19
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Otaka N, Uchida HA, Okuyama M, Hada Y, Onishi Y, Kakio Y, Takeuchi H, Umebayashi R, Tanabe K, Subramanian V, Daugherty A, Sato Y, Wada J. Vasohibin-2 Aggravates Development of Ascending Aortic Aneurysms but not Abdominal Aortic Aneurysms nor Atherosclerosis in ApoE-Deficient Mice. Am J Hypertens 2021; 34:467-475. [PMID: 33180898 DOI: 10.1093/ajh/hpaa181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 10/18/2020] [Accepted: 11/09/2020] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Vasohibin-2 (VASH2) has been isolated as a homologue of vasohibin-1 (VASH1) that promotes angiogenesis counteracting with VASH1. Chronic angiotensin II (AngII) infusion promotes both ascending and abdominal aortic aneurysms (AAs) in mice. The present study aimed to investigate whether exogenous VASH2 influenced AngII-induced vascular pathology in apolipoprotein E-deficient (ApoE-/-) mice. METHODS Male, ApoE-/- mice (9-14 weeks old) were injected with Ad LacZ or Ad VASH2. After a week, saline or AngII (1,000 ng/kg/minute) was infused into the mice subcutaneously via mini-osmotic pumps for 3 weeks. Consequently, all these mice were divided into 4 groups: saline + LacZ (n = 5), saline + VASH2 (n = 5), AngII + LacZ (n = 18), and AngII + VASH2 (n = 17). RESULTS Exogenous VASH2 had no significant effect on ex vivo maximal diameters of abdominal aortas (AngII + LacZ: 1.67 ± 0.17 mm, AngII + VASH2: 1.52 ± 0.16 mm, n.s.) or elastin fragmentation and accumulation of inflammatory cells. Conversely, exogenous VASH2 significantly increased intima areas of aortic arches (AngII + LacZ: 16.6 ± 0.27 mm2, AngII + VASH2: 18.6 ± 0.64 mm2, P = 0.006). VASH2 effect of AngII-induced ascending AAs was associated with increased cleaved caspase-3 abundance. AngII-induced atherosclerosis was not altered by VASH2. CONCLUSIONS The present study demonstrated that augmented VASH2 expression had no effect of AngII-induced abdominal AAs or atherosclerosis, while increasing dilation in the ascending aorta.
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Affiliation(s)
- Nozomu Otaka
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Haruhito A Uchida
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
- Department of Chronic Kidney Disease and Cardiovascular Disease, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Michihiro Okuyama
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
- Department of Cardiovascular Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
- Saha Cardiovascular Research Center, College of Medicine, University of Kentucky, Lexington, Kentucky, USA
| | - Yoshiko Hada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yasuhiro Onishi
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yuki Kakio
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hidemi Takeuchi
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Ryoko Umebayashi
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Katsuyuki Tanabe
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Venkateswaran Subramanian
- Saha Cardiovascular Research Center, College of Medicine, University of Kentucky, Lexington, Kentucky, USA
| | - Alan Daugherty
- Saha Cardiovascular Research Center, College of Medicine, University of Kentucky, Lexington, Kentucky, USA
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, Kentucky, USA
| | - Yasufumi Sato
- Department of Vascular Biology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Jun Wada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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20
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Toczek J, Boodagh P, Sanzida N, Ghim M, Salarian M, Gona K, Kukreja G, Rajendran S, Wei L, Han J, Zhang J, Jung JJ, Graham M, Liu X, Sadeghi MM. Computed tomography imaging of macrophage phagocytic activity in abdominal aortic aneurysm. Theranostics 2021; 11:5876-5888. [PMID: 33897887 PMCID: PMC8058712 DOI: 10.7150/thno.55106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 03/02/2021] [Indexed: 11/21/2022] Open
Abstract
Inflammation plays a major role in the pathogenesis of several vascular pathologies, including abdominal aortic aneurysm (AAA). Evaluating the role of inflammation in AAA pathobiology and potentially outcome in vivo requires non-invasive tools for high-resolution imaging. We investigated the feasibility of X-ray computed tomography (CT) imaging of phagocytic activity using nanoparticle contrast agents to predict AAA outcome. Methods: Uptake of several nanoparticle CT contrast agents was evaluated in a macrophage cell line. The most promising agent, Exitron nano 12000, was further characterized in vitro and used for subsequent in vivo testing. AAA was induced in Apoe-/- mice through angiotensin II (Ang II) infusion for up to 4 weeks. Nanoparticle biodistribution and uptake in AAA were evaluated by CT imaging in Ang II-infused Apoe-/- mice. After imaging, the aortic tissue was harvested and used from morphometry, transmission electron microscopy and gene expression analysis. A group of Ang II-infused Apoe-/- mice underwent nanoparticle-enhanced CT imaging within the first week of Ang II infusion, and their survival and aortic external diameter were evaluated at 4 weeks to address the value of vessel wall CT enhancement in predicting AAA outcome. Results: Exitron nano 12000 showed specific uptake in macrophages in vitro. Nanoparticle accumulation was observed by CT imaging in tissues rich in mononuclear phagocytes. Aortic wall enhancement was detectable on delayed CT images following nanoparticle administration and correlated with vessel wall CD68 expression. Transmission electron microscopy ascertained the presence of nanoparticles in AAA adventitial macrophages. Nanoparticle-induced CT enhancement on images obtained within one week of AAA induction was predictive of AAA outcome at 4 weeks. Conclusions: By establishing the feasibility of CT-based molecular imaging of phagocytic activity in AAA, this study links the inflammatory signal on early time point images to AAA evolution. This readily available technology overcomes an important barrier to cross-sectional, longitudinal and outcome studies, not only in AAA, but also in other cardiovascular pathologies and facilitates the evaluation of modulatory interventions, and ultimately upon clinical translation, patient management.
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Affiliation(s)
- Jakub Toczek
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
| | - Parnaz Boodagh
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
| | - Nowshin Sanzida
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
| | - Mean Ghim
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
| | - Mani Salarian
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
| | - Kiran Gona
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
| | - Gunjan Kukreja
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
| | - Saranya Rajendran
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
| | - Linyan Wei
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
| | - Jinah Han
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
| | - Jiasheng Zhang
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
| | - Jae-Joon Jung
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
| | - Morven Graham
- CCMI Electron Microscopy Core Facility, Yale University School of Medicine, New Haven, CT (USA)
| | - Xinran Liu
- CCMI Electron Microscopy Core Facility, Yale University School of Medicine, New Haven, CT (USA)
| | - Mehran M. Sadeghi
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, CT (USA)
- Veterans Affairs Connecticut Healthcare System, West Haven, CT (USA)
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21
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XIST knockdown suppresses vascular smooth muscle cell proliferation and induces apoptosis by regulating miR-1264/WNT5A/β-catenin signaling in aneurysm. Biosci Rep 2021; 41:227680. [PMID: 33501488 PMCID: PMC7960886 DOI: 10.1042/bsr20201810] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 12/28/2020] [Accepted: 01/15/2021] [Indexed: 12/30/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) have been ascertained as vital modulators in abdominal aortic aneurysm (AAA) development. In this research, the function and molecular mechanisms of the lncRNA X-inactive specific transcript (XIST) in the evolution of vascular smooth muscle cells (VSMCs) were assessed. Results showed that XIST expression was increased but miR-1264 expression level was reduced in the serum of AAA patients. XIST depletion impeded human aorta VSMCs (HA-VSMCs’) ability to proliferate and stimulate apoptosis, while repressing miR-1264 expression through an unmediated interaction. Additionally, the influence of XIST knockdown on apoptosis and proliferation could be rescued by an miR-1264 inhibitor. Subsequent molecular investigations indicated that WNT5A was miR-1264’s target, and XIST functioned as a competing endogenous RNA (ceRNA) of miR-1264 to raise WNT5A expression. Further, an miR-1264 inhibitor stimulated the proliferation and suppressed the apoptosis of HA-VSMCs through the activation of WNT/β-catenin signaling. Taken together, XIST impeded the apoptosis and stimulated the proliferation of HA-VSMCs via the WNT/β-catenin signaling pathway through miR-1264, demonstrating XIST’s underlying role in AAA.
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22
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Wang F, Tu Y, Gao Y, Chen H, Liu J, Zheng J. Smooth Muscle Sirtuin 1 Blocks Thoracic Aortic Aneurysm/Dissection Development in Mice. Cardiovasc Drugs Ther 2020; 34:641-650. [PMID: 32564302 DOI: 10.1007/s10557-020-07005-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
PURPOSE Advancing age is the major risk factor for thoracic aortic aneurysm/dissection (TAAD). However, the causative link between age-related molecules and TAAD remains elusive. Here, we investigated the role of Sirtuin 1 (SIRT1, also known as class III histone deacetylase), the best studied member of the longevity-related Sirtuin family, in TAAD development in vivo. METHODS We used male smooth muscle-specific SIRT1 transgenic (ST-Tg) mice, smooth muscle-specific SIRT1 knockout (ST-KO) mice, and their wild-type (WT) littermates on a C57BL/6J background to establish a TAAD model induced by oral administration of 3-aminopropionitrile fumarate (BAPN). We analyzed the incidence and fatality rates of TAAD in the groups. We examined matrix metallopeptidase 2 (MMP2) and MMP9 expression in aortas or cultured A7r5 cells via western blotting and real-time polymerase chain reaction (PCR). We performed chromatin immunoprecipitation (ChIP) to clarify the epigenetic mechanism of SIRT1-regulated MMP2 expression in vascular smooth muscle cells (VSMCs). RESULTS BAPN treatment markedly increased the incidence of TAAD in WT mice but caused less disease in ST-Tg mice. Moreover, ST-KO mice had the highest BAPN-induced TAAD fatality rate of all the groups. Mechanistically, SIRT1 overexpression resulted in lower MMP2 and MMP9 expression after BAPN treatment in both mouse aortas and cultured A7r5 cells. The downregulation of BAPN-induced MMP2 expression by SIRT1 was mediated by deacetylation of histone H3 lysine 9 (H3K9) on the Mmp2 promoter in the A7r5 cells. CONCLUSION Our findings suggest that SIRT1 expression in SMCs protects against TAAD and could be a novel therapeutic target for TAAD management.
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MESH Headings
- Acetylation
- Aortic Dissection/enzymology
- Aortic Dissection/genetics
- Aortic Dissection/pathology
- Aortic Dissection/prevention & control
- Animals
- Aorta, Thoracic/enzymology
- Aorta, Thoracic/pathology
- Aortic Aneurysm, Thoracic/enzymology
- Aortic Aneurysm, Thoracic/genetics
- Aortic Aneurysm, Thoracic/pathology
- Aortic Aneurysm, Thoracic/prevention & control
- Cell Line
- Disease Models, Animal
- Histones/metabolism
- Male
- Matrix Metalloproteinase 2/genetics
- Matrix Metalloproteinase 2/metabolism
- Matrix Metalloproteinase 9/genetics
- Matrix Metalloproteinase 9/metabolism
- Mice, Inbred C57BL
- Mice, Transgenic
- Muscle, Smooth, Vascular/enzymology
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/enzymology
- Myocytes, Smooth Muscle/pathology
- Signal Transduction
- Sirtuin 1/genetics
- Sirtuin 1/metabolism
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Affiliation(s)
- Fang Wang
- Department of Cardiology, China-Japan Friendship Hospital, Beijing, China
| | - Yimin Tu
- Department of Cardiology, China-Japan Friendship Hospital, Beijing, China
| | - Yanxiang Gao
- Department of Cardiology, China-Japan Friendship Hospital, Beijing, China
| | - Houzao Chen
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jinjing Liu
- Key Laboratory of Rheumatology and Clinical Rheumatology, Ministry of Education, National Clinical Research Center for Dermatologic and Immunologic Diseases, Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
| | - Jingang Zheng
- Department of Cardiology, China-Japan Friendship Hospital, Beijing, China.
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23
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Zhang W, Cheng W, Parlato R, Guo X, Cui X, Dai C, Xu L, Zhu J, Zhu M, Luo K, Zhang W, Dong B, Wang J, Jiang F. Nucleolar stress induces a senescence-like phenotype in smooth muscle cells and promotes development of vascular degeneration. Aging (Albany NY) 2020; 12:22174-22198. [PMID: 33146634 PMCID: PMC7695416 DOI: 10.18632/aging.104094] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/31/2020] [Indexed: 12/24/2022]
Abstract
Senescence of smooth muscle cells (SMCs) has a crucial role in the pathogenesis of abdominal aortic aneurysm (AAA), a disease of vascular degeneration. Perturbation of cellular ribosomal DNA (rDNA) transcription triggers nucleolar stress response. Previously we demonstrated that induction of nucleolar stress in SMCs elicited cell cycle arrest via the ataxia-telangiectasia mutated (ATM)/ATM- and Rad3-related (ATR)-p53 axis. However, the specific roles of nucleolar stress in vascular degeneration remain unexplored. In the present study, we demonstrated for the first time that in both human and animal AAA tissues, there were non-coordinated changes in the expression of RNA polymerase I machinery components, including a downregulation of transcription initiation factor-IA (TIF-IA). Genetic deletion of TIF-IA in SMCs in mice (smTIF-IA-/-) caused spontaneous aneurysm-like lesions in the aorta. In vitro, induction of nucleolar stress triggered a non-canonical DNA damage response, leading to p53 phosphorylation and a senescence-like phenotype in SMCs. In human AAA tissues, there was increased nucleolar stress in medial cells, accompanied by localized DNA damage response within the nucleolar compartment. Our data suggest that perturbed rDNA transcription and induction of nucleolar stress contribute to the pathogenesis of AAA. Moreover, smTIF-IA-/- mice may be a novel animal model for studying spontaneous AAA-like vascular degenerations.
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Affiliation(s)
- Wenjing Zhang
- Department of Physiology and Pathophysiology, School of Basic Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, China.,Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, Jinan, China
| | - Wen Cheng
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, and The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Rosanna Parlato
- Institute of Applied Physiology, University of Ulm, Ulm, Germany.,Institute of Anatomy and Cell Biology, University of Heidelberg, Heidelberg, Germany
| | - Xiaosun Guo
- Department of Physiology and Pathophysiology, School of Basic Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, China
| | - Xiaopei Cui
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, Jinan, China
| | - Chaochao Dai
- Department of Physiology and Pathophysiology, School of Basic Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, China.,Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, Jinan, China
| | - Lei Xu
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Jiankang Zhu
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Min Zhu
- Department of Transplant Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Kun Luo
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Wencheng Zhang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, and The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Bo Dong
- Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - Jianli Wang
- Department of Physiology and Pathophysiology, School of Basic Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, China.,Current address: Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, China
| | - Fan Jiang
- Department of Physiology and Pathophysiology, School of Basic Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, China.,Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, Jinan, China
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24
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Galectin-3 Modulates Macrophage Activation and Contributes Smooth Muscle Cells Apoptosis in Abdominal Aortic Aneurysm Pathogenesis. Int J Mol Sci 2020; 21:ijms21218257. [PMID: 33158139 PMCID: PMC7663490 DOI: 10.3390/ijms21218257] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 12/01/2022] Open
Abstract
Galectin-3 (Gal-3) is a 26-kDa lectin that regulates many aspects of inflammatory cell behavior. We assessed the hypothesis that increased levels of Gal-3 contribute to abdominal aortic aneurysm (AAA) progression by enhancing monocyte chemoattraction through macrophage activation. We analyzed the plasma levels of Gal-3 in 76 patients with AAA (AAA group) and 97 controls (CTL group) as well as in angiotensin II (Ang-II)-infused ApoE knockout mice. Additionally, conditioned media (CM) were used to polarize THP-1 monocyte to M1 macrophages with or without Gal-3 inhibition through small interfering RNA targeted deletion to investigate whether Gal-3 inhibition could attenuate macrophage-induced inflammation and smooth muscle cell (SMC) apoptosis. Our results showed a markedly increased expression of Gal-3 in the plasma and aorta in the AAA patients and experimental mice compared with the CTL group. An in vitro study demonstrated that the M1 cells exhibited increased Gal-3 expression. Gal-3 inhibition markedly decreased the quantity of macrophage-induced inflammatory regulators, including IL-8, TNF-α, and IL-1β, as well as messenger RNA expression and MMP-9 activity. Moreover, Gal-3-deficient CM weakened SMC apoptosis through Fas activation. These findings prove that Gal-3 may contribute to AAA progression by the activation of inflammatory macrophages, thereby promoting SMC apoptosis.
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25
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Wang F, Chen HZ. Histone Deacetylase SIRT1, Smooth Muscle Cell Function, and Vascular Diseases. Front Pharmacol 2020; 11:537519. [PMID: 33117155 PMCID: PMC7573826 DOI: 10.3389/fphar.2020.537519] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 09/18/2020] [Indexed: 12/11/2022] Open
Abstract
Vascular smooth muscle cells (VSMCs), located in the media of artery, play key roles in maintaining the normal vascular physiological functions. Abnormality in VSMCs is implicated in vascular diseases (VDs), including atherosclerosis, abdominal aortic aneurysm (AAA), aortic dissection, and hypertension by regulating the process of inflammation, phenotypic switching, and extracellular matrix degradation. Sirtuins (SIRTs), a family of proteins containing seven members (from SIRT1 to SIRT7) in mammals, function as NAD+-dependent histone deacetylases and ADP-ribosyltransferases. In recent decades, great attention has been paid to the cardiovascular protective effects of SIRTs, especially SIRT1, suggesting a new therapeutic target for the treatment of VDs. In this review, we introduce the basic functions of SIRT1 against VSMC senescence, and summarize the contribution of SIRT1 derived from VSMCs in VDs. Finally, the potential new strategies based on SIRT1 activation have also been discussed with an emphasis on SIRT1 activators and calorie restriction to improve the prognosis of VDs.
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Affiliation(s)
- Fang Wang
- Department of Cardiology, China-Japan Friendship Hospital, Beijing, China
| | - Hou-Zao Chen
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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26
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Endoplasmic reticulum stress and mitochondrial biogenesis are potential therapeutic targets for abdominal aortic aneurysm. Clin Sci (Lond) 2020; 133:2023-2028. [PMID: 31654572 DOI: 10.1042/cs20190648] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/25/2019] [Accepted: 09/27/2019] [Indexed: 01/08/2023]
Abstract
Endoplasmic reticulum (ER) and mitochondria are crucial organelles for cell homeostasis and alterations of these organelles have been implicated in cardiovascular disease. However, their roles in abdominal aortic aneurysm (AAA) pathogenesis remain largely unknown. In a recent issue of Clinical Science, Navas-Madronal et al. ((2019), 133(13), 1421-1438) reported that enhanced ER stress and dysregulation of mitochondrial biogenesis are associated with AAA pathogenesis in humans. The authors also proposed that disruption in oxysterols network such as an elevated concentration of 7-ketocholestyerol in plasma is a causative factor for AAA progression. Their findings highlight new insights into the underlying mechanism of AAA progression through ER stress and dysregulation of mitochondrial biogenesis. Here, we will discuss the background, significance of the study, and future directions.
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27
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Li Z, Kong W. Cellular signaling in Abdominal Aortic Aneurysm. Cell Signal 2020; 70:109575. [PMID: 32088371 DOI: 10.1016/j.cellsig.2020.109575] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/19/2020] [Accepted: 02/19/2020] [Indexed: 12/31/2022]
Abstract
Abdominal aortic aneurysms (AAAs) are highly lethal cardiovascular diseases without effective medications. However, the molecular and signaling mechanisms remain unclear. A series of pathological cellular processes have been shown to contribute to AAA formation, including vascular extracellular matrix remodeling, inflammatory and immune responses, oxidative stress, and dysfunction of vascular smooth muscle cells. Each cellular process involves complex cellular signaling, such as NF-κB, MAPK, TGFβ, Notch and inflammasome signaling. In this review, we discuss how cellular signaling networks function in various cellular processes during the pathogenesis and progression of AAA. Understanding the interaction of cellular signaling networks with AAA pathogenesis as well as the crosstalk of different signaling pathways is essential for the development of novel therapeutic approaches to and personalized treatments of AAA diseases.
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Affiliation(s)
- Zhiqing Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing 100191, China
| | - Wei Kong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing 100191, China.
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28
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Akerman AW, Blanding WM, Stroud RE, Nadeau EK, Mukherjee R, Ruddy JM, Zile MR, Ikonomidis JS, Jones JA. Elevated Wall Tension Leads to Reduced miR-133a in the Thoracic Aorta by Exosome Release. J Am Heart Assoc 2020; 8:e010332. [PMID: 30572760 PMCID: PMC6405702 DOI: 10.1161/jaha.118.010332] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Background Reduced miR‐133a was previously found to be associated with thoracic aortic (TA) dilation, as seen in aneurysm disease. Because wall tension increases with vessel diameter (Law of Laplace), this study tested the hypothesis that elevated tension led to the reduction of miR‐133a in the TA. Methods and Results Elevated tension (1.5 g; 150 mm Hg) applied to murine TA ex vivo reduced miR‐133a tissue abundance compared with TA held at normotension (0.7 g; 70 mm Hg). Cellular miR‐133a levels were reduced with biaxial stretch of isolated murine TA fibroblasts, whereas smooth muscle cells were not affected. Mechanisms contributing to the loss of miR‐133a abundance were further investigated in TA fibroblasts. Biaxial stretch did not reduce primary miR‐133a transcription and had no effect on the expression/abundance of 3 microRNA‐specific exoribonucleases. Remarkably, biaxial stretch increased exosome secretion, and exosomes isolated from TA fibroblasts contained more miR‐133a. Inhibition of exosome secretion prevented the biaxial stretch‐induced reduction of miR‐133a. Subsequently, 2 in vivo models of hypertension were used to determine the effect of elevated wall tension on miR‐133a abundance in the TA: wild‐type mice with osmotic pump–mediated angiotensin II infusion and angiotensin II–independent spontaneously hypertensive mice. Interestingly, the abundance of miR‐133a was decreased in TA tissue and increased in the plasma in both models of hypertension compared with a normotensive control group. Furthermore, miR‐133a was elevated in the plasma of hypertensive human subjects, compared with normotensive patients. Conclusions Taken together, these results identified exosome secretion as a tension‐sensitive mechanism by which miR‐133a abundance was reduced in TA fibroblasts.
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Affiliation(s)
- Adam W Akerman
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC.,4 Cardiothoracic Surgery Research University of North Carolina at Chapel Hill NC
| | - Walker M Blanding
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC
| | - Robert E Stroud
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC
| | - Elizabeth K Nadeau
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC
| | - Rupak Mukherjee
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC.,2 Research Service Ralph H. Johnson Veterans Affairs Medical Center Charleston SC
| | - Jean Marie Ruddy
- 3 Division of Vascular Surgery Medical University of South Carolina Charleston SC
| | - Michael R Zile
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC.,2 Research Service Ralph H. Johnson Veterans Affairs Medical Center Charleston SC
| | - John S Ikonomidis
- 4 Cardiothoracic Surgery Research University of North Carolina at Chapel Hill NC
| | - Jeffrey A Jones
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC.,2 Research Service Ralph H. Johnson Veterans Affairs Medical Center Charleston SC
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29
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Cheng J, Zhang R, Li C, Tao H, Dou Y, Wang Y, Hu H, Zhang J. A Targeting Nanotherapy for Abdominal Aortic Aneurysms. J Am Coll Cardiol 2019; 72:2591-2605. [PMID: 30466517 DOI: 10.1016/j.jacc.2018.08.2188] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 08/14/2018] [Accepted: 08/20/2018] [Indexed: 11/29/2022]
Abstract
BACKGROUND Abdominal aortic aneurysm (AAA) is a leading cause of mortality and morbidity in the elderly. Currently, there remain no effective drugs that can prevent the growth of aneurysms and delay aneurysm rupture in the clinical setting. OBJECTIVES The aim of this study was to develop a nanotherapy that can target aneurysms and release drug molecules in response to the inflammatory microenvironment. METHODS Using a reactive oxygen species (ROS)-responsive nanoparticle and a candidate drug rapamycin, in combination with a peptide ligand for integrin and biomimetic cloaking with macrophage cell membrane, a nanotherapy was developed. Its effectiveness was demonstrated by in vitro and in vivo studies. RESULTS Based on a facile and translational method, a rapamycin-loaded responsive nanotherapy was successfully prepared, which could release drug molecules upon triggering by the high level of ROS. In cells associated with the development of AAAs, the nanotherapy significantly inhibited calcification and attenuated ROS-mediated oxidative stress and apoptosis. By passively targeting aneurysms and releasing drug molecules in response to the inflammatory microenvironment, the intravenously injected ROS-responsive nanotherapy more effectively prevented aneurysm expansion in AAA rats than a nonresponsive control nanotherapy. After decoration with a peptide ligand cRGDfK and macrophage cell membrane, the aneurysmal targeting capability and therapeutic effects of a ROS-responsive nanotherapy with a mean diameter of 190 nm were further enhanced. Moreover, the nanotherapy showed a good safety profile in a preliminary safety test. CONCLUSIONS The multifunctional nanotherapy can be further studied as a promising targeted drug for treatment of aneurysms. The underlying design principles enable the development of a broad range of nanomedicines for targeted therapy of other vascular diseases.
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Affiliation(s)
- Juan Cheng
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing, China
| | - Runjun Zhang
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing, China; Department of Cardiology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Chenwen Li
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing, China
| | - Hui Tao
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing, China
| | - Yin Dou
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing, China
| | - Yuquan Wang
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing, China; Department of Cardiology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Houyuan Hu
- Department of Cardiology, Southwest Hospital, Third Military Medical University, Chongqing, China.
| | - Jianxiang Zhang
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University, Chongqing, China.
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30
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He X, Wang S, Li M, Zhong L, Zheng H, Sun Y, Lai Y, Chen X, Wei G, Si X, Han Y, Huang S, Li X, Liao W, Liao Y, Bin J. Long noncoding RNA GAS5 induces abdominal aortic aneurysm formation by promoting smooth muscle apoptosis. Am J Cancer Res 2019; 9:5558-5576. [PMID: 31534503 PMCID: PMC6735383 DOI: 10.7150/thno.34463] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 06/19/2019] [Indexed: 02/06/2023] Open
Abstract
Objective: Long noncoding RNAs (lncRNAs) may serve as specific targets for the treatment of abdominal aortic aneurysms (AAAs). LncRNA GAS5, functionally associated with smooth muscle cell (SMC) apoptosis and proliferation, is likely involved in AAA formation, but the exact role of GAS5 in AAA is unknown. We thus explored the contribution of GAS5 to SMC-regulated AAA formation and its underlying mechanisms. Methods: Human specimens were used to verify the diverse expression of GAS5 in normal and AAA tissues. The angiotensin II (Ang II)-induced AAA model in ApoE-/- mice and the CaCl2-induced AAA model in wild-type C57BL/6 mice were used. RNA pull-down and luciferase reporter gene assays were performed in human aortic SMCs to detect the interaction between GAS5 and its downstream targets of protein or microRNA (miR). Results: GAS5 expression was significantly upregulated in human AAA specimens and two murine AAA models compared to human normal aortas and murine sham-operated controls. GAS5 overexpression induced SMC apoptosis and repressed its proliferation, thereby promoting AAA formation in two murine AAA models. Y-box-binding protein 1 (YBX1) was identified as a direct target of GAS5 while it also formed a positive feedback loop with GAS5 to regulate the downstream target p21. Furthermore, GAS5 acted as a miR-21 sponge to release phosphatase and tensin homolog from repression, which blocked the activation and phosphorylation of Akt to inhibit proliferation and promote apoptosis in SMCs. Conclusion: The LncRNA GAS5 contributes to SMC survival during AAA formation. Thus, GAS5 might serve as a novel target against AAA.
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Petsophonsakul P, Furmanik M, Forsythe R, Dweck M, Schurink GW, Natour E, Reutelingsperger C, Jacobs M, Mees B, Schurgers L. Role of Vascular Smooth Muscle Cell Phenotypic Switching and Calcification in Aortic Aneurysm Formation. Arterioscler Thromb Vasc Biol 2019; 39:1351-1368. [PMID: 31144989 DOI: 10.1161/atvbaha.119.312787] [Citation(s) in RCA: 178] [Impact Index Per Article: 35.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Aortic aneurysm is a vascular disease whereby the ECM (extracellular matrix) of a blood vessel degenerates, leading to dilation and eventually vessel wall rupture. Recently, it was shown that calcification of the vessel wall is involved in both the initiation and progression of aneurysms. Changes in aortic wall structure that lead to aneurysm formation and vascular calcification are actively mediated by vascular smooth muscle cells. Vascular smooth muscle cells in a healthy vessel wall are termed contractile as they maintain vascular tone and remain quiescent. However, in pathological conditions they can dedifferentiate into a synthetic phenotype, whereby they secrete extracellular vesicles, proliferate, and migrate to repair injury. This process is called phenotypic switching and is often the first step in vascular pathology. Additionally, healthy vascular smooth muscle cells synthesize VKDPs (vitamin K-dependent proteins), which are involved in inhibition of vascular calcification. The metabolism of these proteins is known to be disrupted in vascular pathologies. In this review, we summarize the current literature on vascular smooth muscle cell phenotypic switching and vascular calcification in relation to aneurysm. Moreover, we address the role of vitamin K and VKDPs that are involved in vascular calcification and aneurysm. Visual Overview- An online visual overview is available for this article.
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Affiliation(s)
- Ploingarm Petsophonsakul
- From the Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, the Netherlands (P.P., M.F., C.R., L.S.)
| | - Malgorzata Furmanik
- From the Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, the Netherlands (P.P., M.F., C.R., L.S.)
| | - Rachael Forsythe
- Centre for Cardiovascular Science, University of Edinburgh, United Kingdom (R.F., M.D.)
| | - Marc Dweck
- Centre for Cardiovascular Science, University of Edinburgh, United Kingdom (R.F., M.D.)
| | - Geert Willem Schurink
- Department of Vascular Surgery (G.W.S., M.J., B.M.), Maastricht University Medical Center (MUMC), Maastricht, the Netherlands
| | - Ehsan Natour
- Department of Cardiovascular Surgery (E.N.), Maastricht University Medical Center (MUMC), Maastricht, the Netherlands.,European Vascular Center Aachen-Maastricht, Maastricht, the Netherlands (E.N., M.J., B.M.)
| | - Chris Reutelingsperger
- From the Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, the Netherlands (P.P., M.F., C.R., L.S.)
| | - Michael Jacobs
- Department of Vascular Surgery (G.W.S., M.J., B.M.), Maastricht University Medical Center (MUMC), Maastricht, the Netherlands.,European Vascular Center Aachen-Maastricht, Maastricht, the Netherlands (E.N., M.J., B.M.)
| | - Barend Mees
- Department of Vascular Surgery (G.W.S., M.J., B.M.), Maastricht University Medical Center (MUMC), Maastricht, the Netherlands.,European Vascular Center Aachen-Maastricht, Maastricht, the Netherlands (E.N., M.J., B.M.)
| | - Leon Schurgers
- From the Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, the Netherlands (P.P., M.F., C.R., L.S.)
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The Potential Role of Neutrophil Gelatinase-Associated Lipocalin in the Development of Abdominal Aortic Aneurysms. Ann Vasc Surg 2019; 57:210-219. [DOI: 10.1016/j.avsg.2018.11.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 11/14/2018] [Accepted: 11/27/2018] [Indexed: 11/20/2022]
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33
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Okuyama M, Uchida HA, Hada Y, Kakio Y, Otaka N, Umebayashi R, Tanabe K, Fujii Y, Kasahara S, Subramanian V, Daugherty A, Sato Y, Wada J. Exogenous Vasohibin-2 Exacerbates Angiotensin II-Induced Ascending Aortic Dilation in Mice. Circ Rep 2019; 1:155-161. [PMID: 33693132 PMCID: PMC7890291 DOI: 10.1253/circrep.cr-19-0008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Background:
Chronic angiotensin II (AngII) infusion promotes ascending aortic dilation in C57BL/6J mice. Meanwhile, vasohibin-2 (VASH2) is an angiogenesis promoter in neovascularization under various pathologic conditions. The aim of this study was to investigate whether exogenous VASH2 influences chronic AngII-induced ascending aortic dilation. Methods and Results:
Eight–ten-week-old male C57BL/6J mice were injected with adenovirus (Ad) expressing either VASH2 or LacZ. One week after the injection, mice were infused with either AngII or saline s.c. for 3 weeks. Mice were divided into 4 groups: AngII+VASH2, AngII+LacZ, saline+VASH2, and saline+LacZ. Overexpression of VASH2 significantly increased AngII-induced intimal areas as well as the external diameter of the ascending aorta. In addition, VASH2 overexpression promoted ascending aortic medial elastin fragmentation in AngII-infused mice, which was associated with increased matrix metalloproteinase activity and medial smooth muscle cell (SMC) apoptosis. On western blot analysis, accumulation of apoptotic signaling proteins, p21 and p53 was increased in the AngII+VASH2 group. Furthermore, transfection of human aortic SMC with Ad VASH2 increased p21 and p53 protein abundance upon AngII stimulation. Positive TUNEL staining was also detected in the same group of the human aortic SMC. Conclusions:
Exogenous VASH2 exacerbates AngII-induced ascending aortic dilation in vivo, which is associated with increased medial apoptosis and elastin fragmentation.
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Affiliation(s)
- Michihiro Okuyama
- Department of Cardiovascular Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan.,Saha Cardiovascular Research Center, College of Medicine, University of Kentucky Lexington, KY USA
| | - Haruhito A Uchida
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan.,Department of Chronic Kidney Disease and Cardiovascular Disease, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Yoshiko Hada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Yuki Kakio
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Nozomu Otaka
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Ryoko Umebayashi
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Katsuyuki Tanabe
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Yasuhiro Fujii
- Department of Cardiovascular Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Shingo Kasahara
- Department of Cardiovascular Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Venkateswaran Subramanian
- Saha Cardiovascular Research Center, College of Medicine, University of Kentucky Lexington, KY USA.,Department of Physiology, College of Medicine, University of Kentucky Lexington, KY USA
| | - Alan Daugherty
- Saha Cardiovascular Research Center, College of Medicine, University of Kentucky Lexington, KY USA.,Department of Physiology, College of Medicine, University of Kentucky Lexington, KY USA
| | - Yasufumi Sato
- Department of Vascular Biology, Institute of Development, Aging and Cancer, Tohoku University Sendai Japan
| | - Jun Wada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
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Salmon M, Spinosa M, Zehner ZE, Upchurch GR, Ailawadi G. Klf4, Klf2, and Zfp148 activate autophagy-related genes in smooth muscle cells during aortic aneurysm formation. Physiol Rep 2019; 7:e14058. [PMID: 31025534 PMCID: PMC6483937 DOI: 10.14814/phy2.14058] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 02/21/2019] [Accepted: 02/22/2019] [Indexed: 01/08/2023] Open
Abstract
Abdominal aortic aneurysms (AAAs) are a progressive dilation of the aorta that is characterized by an initial influx of inflammatory cells followed by a pro-inflammatory, migratory, proliferative, and eventually apoptotic smooth muscle cell phenotype. In recent years, the mechanisms related to the initial influx of inflammatory cells have become well-studied; the mechanisms related to chronic aneurysm formation, smooth muscle cell apoptosis and death are less well-characterized. Autophagy is a generally believed to be a protective cellular mechanism that functions to recycle defective proteins and cellular organelles to maintain cellular homeostasis. Our goal with the present study was to investigate the role of autophagy in smooth muscle cells during AAA formation. Levels of the autophagy factors, Beclin, and LC3 were elevated in human and mouse AAA tissue via both qPCR and immunohistochemical analysis. Confocal staining in human and mouse AAA tissue demonstrated Beclin and LC3 were present in smooth muscle cells during AAA formation. Treatment of smooth muscle cells with porcine pancreatic elastase or interleukin (IL)-1β activated autophagy-related genes in vitro while treatment with a siRNA to Kruppel-like transcription factor 4 (Klf4), Kruppel-like transcription factor 2 (Klf2) or Zinc-finger protein 148 (Zfp148) separately inhibited activation of autophagy genes. Chromatin immunoprecipitation assays demonstrated that Klf4, Klf2, and Zfp148 separately bind autophagy genes in smooth muscle cells following elastase treatment. These results demonstrate that autophagy is an important mechanism related to Klfs in smooth muscle cells during AAA formation.
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Affiliation(s)
- Morgan Salmon
- Department of SurgeryUniversity of Virginia School of MedicineCharlottesvilleVirginiaUSA
| | - Michael Spinosa
- Department of SurgeryUniversity of Virginia School of MedicineCharlottesvilleVirginiaUSA
| | - Zendra E. Zehner
- Department of BiochemistryVirginia Commonwealth University Medical CenterRichmondVirginiaUSA
| | | | - Gorav Ailawadi
- Department of SurgeryUniversity of Virginia School of MedicineCharlottesvilleVirginiaUSA
- The Robert M. Berne Cardiovascular Research CenterUniversity of Virginia School of MedicineCharlottesvilleVirginiaUSA
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Abstract
Abdominal aortic aneurysm (AAA) is a local dilatation of the abdominal aortic vessel wall and is among the most challenging cardiovascular diseases as without urgent surgical intervention, ruptured AAA has a mortality rate of >80%. Most patients present acutely after aneurysm rupture or dissection from a previously asymptomatic condition and are managed by either surgery or endovascular repair. Patients usually are old and have other concurrent diseases and conditions, such as diabetes mellitus, obesity, and hypercholesterolemia making surgical intervention more difficult. Collectively, these issues have driven the search for alternative methods of diagnosing, monitoring, and treating AAA using therapeutics and less invasive approaches. Noncoding RNAs-short noncoding RNAs (microRNAs) and long-noncoding RNAs-are emerging as new fundamental regulators of gene expression. Researchers and clinicians are aiming at targeting these microRNAs and long noncoding RNAs and exploit their potential as clinical biomarkers and new therapeutic targets for AAAs. While the role of miRNAs in AAA is established, studies on long-noncoding RNAs are only beginning to emerge, suggesting their important yet unexplored role in vascular physiology and disease. Here, we review the role of noncoding RNAs and their target genes focusing on their role in AAA. We also discuss the animal models used for mechanistic understanding of AAA. Furthermore, we discuss the potential role of microRNAs and long noncoding RNAs as clinical biomarkers and therapeutics.
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Affiliation(s)
- Sandeep Kumar
- Wallace H. Coulter Department of Biomedical Engineering,
Emory University and Georgia Institute of Technology, Atlanta, GA, USA
| | - Reinier A. Boon
- Institute for Cardiovascular Regeneration, Center of
Molecular Medicine, Goethe University, Frankfurt, Germany
- Department of Physiology, Amsterdam Cardiovascular
Sciences, VU University Medical Center, De Boelelaan 1117, 1081 HV Amsterdam, The
Netherlands
- German Center of Cardiovascular Research DZHK, Frankfurt,
Germany
| | - Lars Maegdefessel
- Department of Medicine, Karolinska Institute, Stockholm,
Sweden
- Department of Vascular and Endovascular Surgery, Technical
University Munich, Munich, Germany
- German Center for Cardiovascular Research DZHK, Munich,
Germany
| | - Stefanie Dimmeler
- Institute for Cardiovascular Regeneration, Center of
Molecular Medicine, Goethe University, Frankfurt, Germany
- German Center of Cardiovascular Research DZHK, Frankfurt,
Germany
- Corresponding authors: Hanjoong Jo, PhD, John and Jan Portman
Professor, Wallace H. Coulter Department of Biomedical Engineering, Emory
University and Georgia Institute of Technology, 1760 Haygood Drive, Atlanta, GA
30322, , Stefanie Dimmeler, PhD, Institute for
Cardiovascular Regeneration, Centre of Molecular Medicine, Goethe University
Frankfurt, Theodor Stern Kai 7, 60590, Frankfurt, Germany,
| | - Hanjoong Jo
- Wallace H. Coulter Department of Biomedical Engineering,
Emory University and Georgia Institute of Technology, Atlanta, GA, USA
- Division of Cardiology, Emory University, Atlanta, GA,
USA
- Corresponding authors: Hanjoong Jo, PhD, John and Jan Portman
Professor, Wallace H. Coulter Department of Biomedical Engineering, Emory
University and Georgia Institute of Technology, 1760 Haygood Drive, Atlanta, GA
30322, , Stefanie Dimmeler, PhD, Institute for
Cardiovascular Regeneration, Centre of Molecular Medicine, Goethe University
Frankfurt, Theodor Stern Kai 7, 60590, Frankfurt, Germany,
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36
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Xu MM, Deng HY, Li HH. MicroRNA-27a regulates angiotensin II-induced vascular smooth muscle cell proliferation and migration by targeting α-smooth muscle-actin in vitro. Biochem Biophys Res Commun 2019; 509:973-977. [DOI: 10.1016/j.bbrc.2019.01.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 01/08/2019] [Indexed: 12/28/2022]
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37
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Salmon M, Schaheen B, Spinosa M, Montgomery W, Pope NH, Davis JP, Johnston WF, Sharma AK, Owens GK, Merchant JL, Zehner ZE, Upchurch GR, Ailawadi G. ZFP148 (Zinc-Finger Protein 148) Binds Cooperatively With NF-1 (Neurofibromin 1) to Inhibit Smooth Muscle Marker Gene Expression During Abdominal Aortic Aneurysm Formation. Arterioscler Thromb Vasc Biol 2019; 39:73-88. [PMID: 30580567 PMCID: PMC6422047 DOI: 10.1161/atvbaha.118.311136] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Objective- The goal of this study was to determine the role of ZFP148 (zinc-finger protein 148) in aneurysm formation. Approach and Results- ZFP148 mRNA expression increased at day 3, 7, 14, 21, and 28 after during abdominal aortic aneurysm formation in C57BL/6 mice. Loss of ZFP148 conferred abdominal aortic aneurysm protection using ERTCre+ ZFP148 flx/flx mice. In a third set of experiments, smooth muscle-specific loss of ZFP148 alleles resulted in progressively greater protection using novel transgenic mice (MYH [myosin heavy chain 11] Cre+ flx/flx, flx/wt, and wt/wt). Elastin degradation, LGAL3, and neutrophil staining were significantly attenuated, while α-actin staining was increased in ZFP148 knockout mice. Results were verified in total cell ZFP148 and smooth muscle-specific knockout mice using an angiotensin II model. ZFP148 smooth muscle-specific conditional mice demonstrated increased proliferation and ZFP148 was shown to bind to the p21 promoter during abdominal aortic aneurysm formation. ZFP148 smooth muscle-specific conditional knockout mice also demonstrated decreased apoptosis as measured by decreased cleaved caspase-3 staining. ZFP148 bound smooth muscle marker genes via chromatin immunoprecipitation analysis mediated by NF-1 (neurofibromin 1) promote histone H3K4 deacetylation via histone deacetylase 5. Transient transfections and chromatin immunoprecipitation analyses demonstrated that NF-1 was required for ZFP148 protein binding to smooth muscle marker genes promoters during aneurysm formation. Elimination of NF-1 using shRNA approaches demonstrated that NF-1 is required for binding and elimination of NF-1 increased BRG1 recruitment, the ATPase subunit of the SWI/SWF complex, and increased histone acetylation. Conclusions- ZFP148 plays a critical role in multiple murine models of aneurysm formation. These results suggest that ZFP148 is important in the regulation of proliferation, smooth muscle gene downregulation, and apoptosis in aneurysm development.
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Affiliation(s)
- Morgan Salmon
- Department of Surgery, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Basil Schaheen
- Department of Surgery, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Michael Spinosa
- Department of Surgery, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - William Montgomery
- Department of Surgery, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Nicolas H. Pope
- Department of Surgery, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - John P. Davis
- Department of Surgery, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - William F. Johnston
- Department of Surgery, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Ashish K. Sharma
- Department of Surgery, College of Medicine of the University of Florida, Gainesville, Florida, USA
| | - Gary K. Owens
- The Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | | | - Zendra E. Zehner
- Department of Biochemistry, Virginia Commonwealth University Medical Center, Richmond, Virginia, USA
| | - Gilbert R. Upchurch
- Department of Surgery, University of Virginia School of Medicine, Charlottesville, Virginia, USA
- Department of Surgery, College of Medicine of the University of Florida, Gainesville, Florida, USA
| | - Gorav Ailawadi
- Department of Surgery, University of Virginia School of Medicine, Charlottesville, Virginia, USA
- The Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
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Ni XQ, Lu WW, Zhang JS, Zhu Q, Ren JL, Yu YR, Liu XY, Wang XJ, Han M, Jing Q, Du J, Tang CS, Qi YF. Inhibition of endoplasmic reticulum stress by intermedin1-53 attenuates angiotensin II-induced abdominal aortic aneurysm in ApoE KO Mice. Endocrine 2018; 62:90-106. [PMID: 29943223 DOI: 10.1007/s12020-018-1657-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 06/15/2018] [Indexed: 12/23/2022]
Abstract
Endoplasmic reticulum stress (ERS) is involved in the development of abdominal aortic aneurysm (AAA). Since bioactive peptide intermedin (IMD)1-53 protects against AAA formation, here we investigated whether IMD1-53 attenuates AAA by inhibiting ERS. AAA model was induced by angiotensin II (AngII) in ApoE KO mouse background. AngII-treated mouse aortas showed increased ERS gene transcription of caspase12, eukaryotic translation initiation factor 2a (eIf2a) and activating transcription factor 4(ATF4).The protein level of ERS marker glucose regulated protein 94(GRP94), ATF4 and C/EBP homologous protein 10(CHOP) was also up-regulated by AngII. Increased ERS levels were accompanied by severe VSMC apoptosis in human AAA aorta. In vivo administration of IMD1-53 greatly reduced AngII-induced AAA and abrogated the activation of ERS. To determine whether IMD inhibited AAA by ameliorating ERS, we used 2 non-selective ERS inhibitors phenyl butyrate (4-PBA) and taurine (TAU). Similar to IMD, PBA, and TAU significantly reduced the incidence of AAA and AAA-related pathological disorders. In vitro, AngII infusion up-regulated CHOP, caspase12 expression and led to VSMC apoptosis. IMD siRNA aggravated the CHOP, caspase12-mediated VSMC apoptosis, which was abolished by ATF4 silencing. IMD infusion promoted the phosphorylation of adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK) in aortas in ApoE KO mice, and the AMPK inhibitor compound C abolished the protective effect of IMD on VSMC ERS and apoptosis induced by AngII. In conclusion, IMD may protect against AAA formation by inhibiting ERS via activating AMPK phosphorylation.
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MESH Headings
- Adenylate Kinase/metabolism
- Angiotensin II
- Animals
- Aortic Aneurysm, Abdominal/chemically induced
- Aortic Aneurysm, Abdominal/drug therapy
- Aortic Aneurysm, Abdominal/metabolism
- Apolipoproteins E/genetics
- Apolipoproteins E/metabolism
- Endoplasmic Reticulum Stress/drug effects
- Mice
- Mice, Knockout
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Peptide Hormones/pharmacology
- Peptide Hormones/therapeutic use
- Phosphorylation/drug effects
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Affiliation(s)
- Xian-Qiang Ni
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, 100083, Beijing, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, 100083, Beijing, China
- Department of Microbiology and Parasitology, School of Basic Medical Science, Peking University, 100083, Beijing, China
| | - Wei-Wei Lu
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, 100083, Beijing, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, 100083, Beijing, China
- Department of Microbiology and Parasitology, School of Basic Medical Science, Peking University, 100083, Beijing, China
| | - Jin-Sheng Zhang
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, 100083, Beijing, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, 100083, Beijing, China
- Department of Microbiology and Parasitology, School of Basic Medical Science, Peking University, 100083, Beijing, China
| | - Qing Zhu
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, 100083, Beijing, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, 100083, Beijing, China
- Department of Microbiology and Parasitology, School of Basic Medical Science, Peking University, 100083, Beijing, China
| | - Jin-Ling Ren
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, 100083, Beijing, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, 100083, Beijing, China
- Department of Microbiology and Parasitology, School of Basic Medical Science, Peking University, 100083, Beijing, China
| | - Yan-Rong Yu
- Department of Microbiology and Parasitology, School of Basic Medical Science, Peking University, 100083, Beijing, China
| | - Xiu-Ying Liu
- Key Laboratory of Genetic Network Biology, Collaborative Innovation Center of Genetics and Development, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Xiu-Jie Wang
- Key Laboratory of Genetic Network Biology, Collaborative Innovation Center of Genetics and Development, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Mei Han
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Key Laboratory of Medical Biotechnology of Hebei Province, Hebei Medical University, 050017, Shijiazhuang, China
| | - Qing Jing
- Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Science, Chinese Academy of Science, Shanghai, China
| | - Jie Du
- Key Laboratory of Remodeling-Related Cardiovascular Diseases, Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing An Zhen Hospital, Ministry of Education, Capital Medical University, 100029, Beijing, China
| | - Chao-Shu Tang
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, 100083, Beijing, China
| | - Yong-Fen Qi
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, 100083, Beijing, China.
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, 100083, Beijing, China.
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Cheng J, Zhou X, Jiang X, Sun T. Deletion of ACTA2 in mice promotes angiotensin II induced pathogenesis of thoracic aortic aneurysms and dissections. J Thorac Dis 2018; 10:4733-4740. [PMID: 30233845 DOI: 10.21037/jtd.2018.07.75] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Background Mutation of the ACTA2 (α-2 smooth muscle actin) gene accounts for ~15% of all cases of familial thoracic aortic aneurysms and dissections. Surprisingly, no severe vascular phenotypes were observed at baseline in mice carrying this gene mutation. Our aim was to explore whether mutation of ACTA2 promotes the development of aneurysms or dissections in the presence of angiotensin II (AngII) and to determine whether this mutation has an impact on the phenotypic modulation and apoptosis mediated by AngII in vascular smooth muscle cells (VSMCs). Methods Mice were divided into three groups: AngII stimulated-wild-type (WT) (AngII) and ACTA2-/- mice (ACTA2) group, in which AngII were administered subcutaneously into 8-week-old C57 mice and ACTA2-/- mice, respectively, for 4 weeks using osmotic minipumps, and the control group (WT), in which the WT mice were infused with normal saline (NS). Ultrasound was performed to quantify lumen diameters. RT-qPCR and Western blot were used to assess gene expression, and histobiochemistry was used to evaluate the pathological changes in the thoracoabdominal aortas. TUNEL was used to assess apoptosis in VSMCs. Results Compared with the AngII- group, the ACTA2 mice exhibited more severity of dilated lumena of the aortas, a significantly increased expression of osteopontin (OPN), an elevated ratio of Bax/Bcl-2, increased apoptosis, and a decreased expression of α-smooth muscle actin (α-SMA). Conclusions Knockout of ACTA2 promoted AngII induced progressive lumen dilation of the aortas, apoptosis, and the phenotypic modulation in VSMCs in mice.
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Affiliation(s)
- Jiancheng Cheng
- Department of Cardiothoracic Surgery, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou 450007, China
| | - Xianwu Zhou
- Department of Cardiovascular Surgery, Wuhan Asia Heart Hospital, Wuhan 430015, China
| | - Xionggang Jiang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Tucheng Sun
- Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
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Han Z, Zhang T, He Y, Li G, Li G, Jin X. Inhibition of prostaglandin E2 protects abdominal aortic aneurysm from expansion through regulating miR-29b-mediated fibrotic ECM expression. Exp Ther Med 2018; 16:155-160. [PMID: 29896234 PMCID: PMC5995085 DOI: 10.3892/etm.2018.6160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 05/08/2018] [Indexed: 12/11/2022] Open
Abstract
The risk of rupture, the most feared clinical consequence of abdominal aortic aneurysm, increases with the enlargement of aorta. MicroRNA-29b (miR-29b) has emerged as a key modulator of extracellular matrix (ECM) homeostasis and thereby is proposed to play a crucial role in vascular remodeling. However, agents that alter miR-29b expression are relatively inefficient in the aorta, likely due to inferior uptake. Herein we found that miR-29b was upregulated in aortic smooth muscle cells upon prostaglandin E2 (PGE2) stimulation whereas indomethacin treatment downregulated miR-29b expression. In order to obtain insight into the pathological processes associated with the vascular remodeling that accompanies aortic dilatation, we compared expression profiles of several representative ECM components in aortic walls. Notably, PGE2 induced a dramatic decline in these ECM components, which was rescued by introduction of indomethacin. In addition, COL1A1 was validated as a direct target gene of miR-29b by dual-luciferase reporter assay. In aggregate, our study suggests that PGE2 may accelerate ECM degradation through decreasing miR-29b expression. Thus those anti-inflammatory drugs that inhibit PGE2 synthesis represent an effective means of inducing an augmented profibrotic response in the aortic walls and thereby inhibiting aneurysmal expansion.
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Affiliation(s)
- Zonglin Han
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Tangshan Zhang
- Department of Vascular Surgery, The Seventh People's Hospital, Jinan, Shandong 251400, P.R. China
| | - Yuxiang He
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Gang Li
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Gang Li
- Department of General Surgery, Central Hospital of Taian, Taian, Shandong 271000, P.R. China
| | - Xing Jin
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
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Toghill BJ, Saratzis A, Freeman PJ, Sylvius N, Bown MJ. SMYD2 promoter DNA methylation is associated with abdominal aortic aneurysm (AAA) and SMYD2 expression in vascular smooth muscle cells. Clin Epigenetics 2018; 10:29. [PMID: 29507647 PMCID: PMC5833080 DOI: 10.1186/s13148-018-0460-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 02/20/2018] [Indexed: 02/06/2023] Open
Abstract
Background Abdominal aortic aneurysm (AAA) is a deadly cardiovascular disease characterised by the gradual, irreversible dilation of the abdominal aorta. AAA is a complex genetic disease but little is known about the role of epigenetics. Our objective was to determine if global DNA methylation and CpG-specific methylation at known AAA risk loci is associated with AAA, and the functional effects of methylation changes. Results We assessed global methylation in peripheral blood mononuclear cell DNA from 92 individuals with AAA and 93 controls using enzyme-linked immunosorbent assays, identifying hyper-methylation in those with large AAA and a positive linear association with AAA diameter (P < 0.0001, R2 = 0.3175).We then determined CpG methylation status of regulatory regions in genes located at AAA risk loci identified in genome-wide association studies, using bisulphite next-generation sequencing (NGS) in vascular smooth muscle cells (VSMCs) taken from aortic tissues of 44 individuals (24 AAAs and 20 controls). In IL6R, 2 CpGs were hyper-methylated (P = 0.0145); in ERG, 13 CpGs were hyper-methylated (P = 0.0005); in SERPINB9, 6 CpGs were hypo-methylated (P = 0.0037) and 1 CpG was hyper-methylated (P = 0.0098); and in SMYD2, 4 CpGs were hypo-methylated (P = 0.0012).RT-qPCR was performed for each differentially methylated gene on mRNA from the same VSMCs and compared with methylation. This analysis revealed downregulation of SMYD2 and SERPINB9 in AAA, and a direct linear relationship between SMYD2 promoter methylation and SMYD2 expression (P = 0.038). Furthermore, downregulation of SMYD2 at the site of aneurysm in the aortic wall was further corroborated in 6 of the same samples used for methylation and gene expression analysis with immunohistochemistry. Conclusions This study is the first to assess DNA methylation in VSMCs from individuals with AAA using NGS, and provides further evidence there is an epigenetic basis to AAA. Our study shows that methylation status of the SMYD2 promoter may be linked with decreased SMYD2 expression in disease pathobiology. In support of our work, downregulated SMYD2 has previously been associated with adverse cardiovascular physiology and inflammation, which are both hallmarks of AAA. The identification of such adverse epigenetic modifications could potentially contribute towards the development of epigenetic treatment strategies in the future.
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Affiliation(s)
- Bradley J Toghill
- 1Department of Cardiovascular Sciences and the NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, LE2 7LX UK
| | - Athanasios Saratzis
- 1Department of Cardiovascular Sciences and the NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, LE2 7LX UK
| | - Peter J Freeman
- 2Department of Genetics and Genome Biology, University of Leicester, Leicester, LE1 7RH UK
| | - Nicolas Sylvius
- 2Department of Genetics and Genome Biology, University of Leicester, Leicester, LE1 7RH UK
| | | | - Matthew J Bown
- 1Department of Cardiovascular Sciences and the NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, LE2 7LX UK
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Understanding the role of mammalian sterile 20-like kinase 1 (MST1) in cardiovascular disorders. J Mol Cell Cardiol 2018; 114:141-149. [DOI: 10.1016/j.yjmcc.2017.11.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 11/08/2017] [Accepted: 11/14/2017] [Indexed: 12/27/2022]
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Villard C, Hultgren R. Abdominal aortic aneurysm: Sex differences. Maturitas 2017; 109:63-69. [PMID: 29452784 DOI: 10.1016/j.maturitas.2017.12.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/11/2017] [Accepted: 12/12/2017] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Abdominal aortic aneurysm (AAA) predominantly affects an elderly male population. Even so, AAA appears more detrimental in women, who experience a higher risk of aneurysm rupture and a worse outcome after surgery than men. Why women are privileged from yet are worse off once affected has been attributed to an effect of sex hormones. This review summarizes the knowledge of sex differences in AAA and addresses the changes in the aneurysm wall from a gender perspective. METHOD Standard reporting guidelines set by the PRISMA Group were followed to identify studies examining AAA from a gender perspective. Relevant reports were identified using two electronic databases: PubMed and Web of Science. The systematic search was performed in two stages: firstly, using the terms AAA and gender/sex/women; and secondly, adding the terms "elastin", "collagen" and "vascular smooth muscle cells", in order to filter the search for studies relevant to our focus on the aneurysm wall. CONCLUSION Current studies support the theory that sex has an effect on aneurysm formation, yet are inconclusive about whether or not aneurysm formation is dependent on female/male sex hormones or a lack thereof. The studies in women are scarce and out of those most reports primarily address other end-points, which limit their ability to illuminate an effect of sex on aneurysm formation. The complexity of the human menstrual cycle and menopausal transition are difficult to mimic in animal models, which limit their applicability to AAA formation in humans.
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Affiliation(s)
- Christina Villard
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
| | - Rebecka Hultgren
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden; Department of Vascular Surgery, Karolinska University Hospital, Stockholm, Sweden
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Bridge KI, Bollen L, Zhong J, Hesketh M, Macrae FL, Johnson A, Philippou H, Scott DJ, Gils A, Ariёns RAS. Thrombin-activatable fibrinolysis inhibitor in human abdominal aortic aneurysm disease. J Thromb Haemost 2017; 15:2218-2225. [PMID: 28834317 DOI: 10.1111/jth.13804] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Indexed: 12/01/2022]
Abstract
Essentials Patients with abdominal aortic aneurysms (AAA) develop dense clots that are resistant to lysis. This study explores the role of thrombin-activatable fibrinolysis inhibitor (TAFI) in human AAA. There is evidence of chronically increased TAFI activation in patients with AAA. TAFI may represent a pharmacological target for cardiovascular risk reduction in AAA. SUMMARY Background Intra-luminal thrombosis is a key factor in growth of abdominal aortic aneurysms (AAAs). Patients with AAA form dense clots that are resistant to fibrinolysis. Thrombin-activatable fibrinolysis inhibitor (TAFI) has been shown to influence AAA development in murine models. Objective The aim of this study is to characterize the role of TAFI in human AAA. Methods Plasma levels of TAFI, TAFI activation peptide (TAFI-AP), activated/inactivated TAFI (TAFIa/ai) and plasmin-α2-antiplasmin complex were measured by ELISAs in patients with AAA (n = 202) and controls (n = 188). Results TAFIa/ai and TAFI-AP levels were higher in patients than controls (median [IQR], 20.3 [14.6-32.8] ng mL-1 vs. 14.2 [11.2-19.3] ng mL-1 and 355.0 [232.4-528.1] ng mL-1 vs. 248.6 [197.1-328.1] ng mL-1 ). TAFIa/ai was positively correlated with TAFI-AP (r = 0.164). Intact TAFI levels were not different between patients and controls (13.4 [11.2-16.1] μg mL-1 vs. 12.8 [10.6-15.4] μg mL-1 ). Plasmin-α2-antiplasmin was higher in AAA patients than controls (690.0 [489.1-924.3] ng mL-1 vs. 480.7 [392.6-555.3] ng mL-1 ). Conclusions The increase in TAFIa/ai and TAFI-AP suggests an increased TAFI activation in patients with AAA. Prospective studies are required to further elucidate the role of TAFI and fibrinolysis in AAA pathogenesis.
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Affiliation(s)
- K I Bridge
- Thrombosis and Tissue Repair Group, Division of Cardiovascular and Diabetes Research, Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, UK
| | - L Bollen
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven-University of Leuven, Laboratory for Therapeutic and Diagnostic Antibodies, Leuven, Belgium
| | - J Zhong
- Department of Radiology, Leeds General Infirmary, Leeds, UK
| | - M Hesketh
- Thrombosis and Tissue Repair Group, Division of Cardiovascular and Diabetes Research, Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, UK
| | - F L Macrae
- Thrombosis and Tissue Repair Group, Division of Cardiovascular and Diabetes Research, Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, UK
| | - A Johnson
- Thrombosis and Tissue Repair Group, Division of Cardiovascular and Diabetes Research, Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, UK
- The Leeds Vascular Institute, Leeds General Infirmary, Leeds, UK
| | - H Philippou
- Thrombosis and Tissue Repair Group, Division of Cardiovascular and Diabetes Research, Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, UK
| | - D J Scott
- Thrombosis and Tissue Repair Group, Division of Cardiovascular and Diabetes Research, Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, UK
- The Leeds Vascular Institute, Leeds General Infirmary, Leeds, UK
| | - A Gils
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven-University of Leuven, Laboratory for Therapeutic and Diagnostic Antibodies, Leuven, Belgium
| | - R A S Ariёns
- Thrombosis and Tissue Repair Group, Division of Cardiovascular and Diabetes Research, Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, UK
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Park AC, Phan N, Massoudi D, Liu Z, Kernien JF, Adams SM, Davidson JM, Birk DE, Liu B, Greenspan DS. Deficits in Col5a2 Expression Result in Novel Skin and Adipose Abnormalities and Predisposition to Aortic Aneurysms and Dissections. THE AMERICAN JOURNAL OF PATHOLOGY 2017; 187:2300-2311. [PMID: 28734943 DOI: 10.1016/j.ajpath.2017.06.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 06/07/2017] [Accepted: 06/08/2017] [Indexed: 12/15/2022]
Abstract
Classic Ehlers-Danlos syndrome (cEDS) is characterized by fragile, hyperextensible skin and hypermobile joints. cEDS can be caused by heterozygosity for missense mutations in genes COL5A2 and COL5A1, which encode the α2(V) and α1(V) chains, respectively, of collagen V, and is most often caused by COL5A1 null alleles. However, COL5A2 null alleles have yet to be associated with cEDS or other human pathologies. We previously showed that mice homozygous null for the α2(V) gene Col5a2 are early embryonic lethal, whereas haploinsufficiency caused aberrancies of adult skin, but not a frank cEDS-like phenotype, as skin hyperextensibility at low strain and dermal cauliflower-contoured collagen fibril aggregates, two cEDS hallmarks, were absent. Herein, we show that ubiquitous postnatal Col5a2 knockdown results in pathognomonic dermal cauliflower-contoured collagen fibril aggregates, but absence of skin hyperextensibility, demonstrating these cEDS hallmarks to arise separately from loss of collagen V roles in control of collagen fibril growth and nucleation events, respectively. Col5a2 knockdown also led to loss of dermal white adipose tissue (WAT) and markedly decreased abdominal WAT that was characterized by miniadipocytes and increased collagen deposition, suggesting α2(V) to be important to WAT development/maintenance. More important, Col5a2 haploinsufficiency markedly increased the incidence and severity of abdominal aortic aneurysms, and caused aortic arch ruptures and dissections, indicating that α2(V) chain deficits may play roles in these pathologies in humans.
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Affiliation(s)
- Arick C Park
- Department of Cell and Regenerative Biology, University of Wisconsin, Madison, Wisconsin
| | - Noel Phan
- Department of Surgery, University of Wisconsin, Madison, Wisconsin
| | - Dawiyat Massoudi
- Department of Cell and Regenerative Biology, University of Wisconsin, Madison, Wisconsin
| | - Zhenjie Liu
- Department of Surgery, University of Wisconsin, Madison, Wisconsin
| | - John F Kernien
- Department of Cell and Regenerative Biology, University of Wisconsin, Madison, Wisconsin
| | - Sheila M Adams
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Jeffrey M Davidson
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University, Nashville, Tennessee
| | - David E Birk
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Bo Liu
- Department of Surgery, University of Wisconsin, Madison, Wisconsin
| | - Daniel S Greenspan
- Department of Cell and Regenerative Biology, University of Wisconsin, Madison, Wisconsin.
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Cao X, Cai Z, Liu J, Zhao Y, Wang X, Li X, Xia H. miRNA‑504 inhibits p53‑dependent vascular smooth muscle cell apoptosis and may prevent aneurysm formation. Mol Med Rep 2017; 16:2570-2578. [PMID: 28677789 PMCID: PMC5548046 DOI: 10.3892/mmr.2017.6873] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 03/23/2017] [Indexed: 12/11/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is a common disease that is associated with the proliferation and apoptosis of vascular smooth muscle cells (VSMCs). VSMCs are regulated by microRNAs (miRNA). The aim of the present study was to identify miRNA sequences that regulate aortic SMCs during AAA. miRNA-504 was identified using a miRNA PCR array and by reverse transcription-quantitative polymerase chain reaction analysis, and its expression levels were observed to be downregulated in the aortic cells derived from patients with AAA when compared with controls. Transfection of SMCs with pMSCV-miRNA-504 vector was performed, and cell proliferation and the expression levels of proliferating cell nuclear antigen (PCNA), replication factor C subunit 4 (RFC4), B-cell lymphoma-2 (Bcl-2) and caspase-3/9 were measured by western blotting. The mechanisms underlying the effects of miRNA-504 was then analyzed. The results demonstrated that overexpression of miRNA-504 significantly upregulated the expression levels of PCNA, RFC4 and Bcl-2, while caspase-3/9 expression was significantly inhibited when compared with non-targeting controls. In addition, miRNA-504 overexpression was observed to promote the proliferation of SMCs. The expression level of the tumor suppressor, p53, which is known to be a direct target of miRNA-504, was inhibited following transfection of SMCs with pMSCV-miRNA-504. In addition, the expression of the downstream targets of p53, p21 and Bcl-like protein-4, were significantly reduced following overexpression of miRNA-504. These results revealed the anti-apoptotic role of miRNA-504 in SMCs derived from patients with AAA via direct targeting of p53.
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Affiliation(s)
- Xue Cao
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150006, P.R. China
| | - Zhenguo Cai
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150006, P.R. China
| | - Junyan Liu
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150006, P.R. China
| | - Yanru Zhao
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150006, P.R. China
| | - Xin Wang
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150006, P.R. China
| | - Xueqi Li
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150006, P.R. China
| | - Hongyuan Xia
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150006, P.R. China
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Klaus V, Tanios-Schmies F, Reeps C, Trenner M, Matevossian E, Eckstein HH, Pelisek J. Association of Matrix Metalloproteinase Levels with Collagen Degradation in the Context of Abdominal Aortic Aneurysm. Eur J Vasc Endovasc Surg 2017; 53:549-558. [PMID: 28209269 DOI: 10.1016/j.ejvs.2016.12.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 12/24/2016] [Indexed: 10/20/2022]
Abstract
OBJECTIVE/BACKGROUND Matrix metalloproteinases (MMPs) have already been identified as key players in the pathogenesis of abdominal aortic aneurysm (AAA). However, the current data remain inconclusive. In this study, the expression of MMPs at mRNA and protein levels were investigated in relation to the degradation of collagen I and collagen III. METHODS Tissue samples were obtained from 40 patients with AAA undergoing open aortic repair, and from five healthy controls during kidney transplantation. Expression of MMPs 1, 2, 3, 7, 8, 9, and 12, and tissue inhibitor of metalloproteinase (TIMP)1, and TIMP2 were measured at the mRNA level using quantitative reverse transcription polymerase chain reaction. At the protein level, MMPs, collagen I, and collagen III, and their degradation products carboxy-terminal collagen cross-links (CTX)-I and CTX-III, were quantified via enzyme linked immunosorbent assay. In addition, immunohistochemistry and gelatine zymography were performed. RESULTS In AAA, significantly enhanced mRNA expression was observed for MMPs 3, 9, and 12 compared with controls (p ≤ .001). MMPs 3, 9, and 12 correlated significantly with macrophages (p = .007, p = .018, and p = .015, respectively), and synthetic smooth muscle cells with MMPs 1, 2, and 9 (p = .020, p = .018, and p = .027, respectively). At the protein level, MMPs 8, 9, and 12 were significantly elevated in AAA (p = .006, p = .0004, and p < .001, respectively). No significant correlation between mRNA and protein was observed for any MMP. AAA contained significantly reduced intact collagen I (twofold; p = .002), whereas collagen III was increased (4.6 fold; p < .001). Regarding degraded collagen I and III relative to intact collagens, observations were inverse (1.4 fold increase for CTX-1 [p < .001]; fivefold decrease for CTX-III [p = .004]). MMPs 8, 9, and 12 correlated with collagen I (p = .019, p < .001, and p = 0.003, respectively), collagen III (p = .015, p < .001, and p < .001, respectively), and degraded collagen I (p = .012, p = .049, and p = .001, respectively). CONCLUSION No significant relationship was found between mRNA and protein and MMP levels. MMPs 9 and 12 were overexpressed in AAA at the mRNA and protein level, and MMP-8 at the protein level. MMP-2 was detected in synthetic SMCs. Collagen I and III showed inverse behaviour in AAA. In particular, MMPs 8, 9, and 12 appear to be associated with collagen I, collagen III, and their degradation products.
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Affiliation(s)
- V Klaus
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - F Tanios-Schmies
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - C Reeps
- Universitätsklinikum Carl Gustav Carus Dresden, Klinik für Viszeral-, Thorax- und Gefäßchirurgie, Dresden, Germany
| | - M Trenner
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - E Matevossian
- Department of Surgery, Munich Transplant Centre, Munich, Germany
| | - H-H Eckstein
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany; DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - J Pelisek
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany; DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany.
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Shen YH, LeMaire SA. Molecular pathogenesis of genetic and sporadic aortic aneurysms and dissections. Curr Probl Surg 2017; 54:95-155. [PMID: 28521856 DOI: 10.1067/j.cpsurg.2017.01.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 01/16/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Ying H Shen
- Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX; Department of Cardiovascular Surgery, Texas Heart Institute, Houston, TX; Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX.
| | - Scott A LeMaire
- Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX; Department of Cardiovascular Surgery, Texas Heart Institute, Houston, TX; Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX; Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX.
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Elevated Adiponectin Levels Suppress Perivascular and Aortic Inflammation and Prevent AngII-induced Advanced Abdominal Aortic Aneurysms. Sci Rep 2016; 6:31414. [PMID: 27659201 PMCID: PMC5034224 DOI: 10.1038/srep31414] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 07/19/2016] [Indexed: 12/26/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is a degenerative disease characterized by aortic dilation and rupture leading to sudden death. Currently, no non-surgical treatments are available and novel therapeutic targets are needed to prevent AAA. We investigated whether increasing plasma levels of adiponectin (APN), a pleiotropic adipokine, provides therapeutic benefit to prevent AngII-induced advanced AAA in a well-established preclinical model. In the AngII-infused hyperlipidemic low-density lipoprotein receptor-deficient mouse (LDLR-/-) model, we induced plasma APN levels using a recombinant adenovirus expressing mouse APN (AdAPN) and as control, adenovirus expressing green florescent protein (AdGFP). APN expression produced sustained and significant elevation of total and high-molecular weight APN levels and enhanced APN localization in the artery wall. AngII infusion for 8 weeks induced advanced AAA development in AdGFP mice. Remarkably, APN inhibited the AAA development in AdAPN mice by suppressing aortic inflammatory cell infiltration, medial degeneration and elastin fragmentation. APN inhibited the angiotensin type-1 receptor (AT1R), inflammatory cytokine and mast cell protease expression, and induced lysyl oxidase (LOX) in the aortic wall, improved systemic cytokine profile and attenuated adipose inflammation. These studies strongly support APN therapeutic actions through multiple mechanisms inhibiting AngII-induced AAA and increasing plasma APN levels as a strategy to prevent advanced AAA.
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Baicalein protects against the development of angiotensin II-induced abdominal aortic aneurysms by blocking JNK and p38 MAPK signaling. SCIENCE CHINA-LIFE SCIENCES 2016; 59:940-9. [PMID: 27333787 DOI: 10.1007/s11427-015-0277-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 05/08/2016] [Indexed: 12/20/2022]
Abstract
An abdominal aortic aneurysm (AAA) is a permanent, localized dilatation of the abdominal aorta. In western countries, the morbidity of AAA is approximately 8%. Currently, pharmacotherapies for AAA are limited. Here, we demonstrate that baicalein (BAI), the main component of the Chinese traditional drug "Huang Qin", attenuates the incidence and severity of AAA in Apoe (-/-) mice infused with angiotensin II (AngII). Mechanically, BAI treatment decreases AngII-induced reactive oxygen species (ROS) production in the aortic wall. Moreover, BAI inhibits inflammatory cell accumulation in the aortas of mice infused with AngII. It also inhibits AngII-induced activation of matrix metalloproteinase 2 (MMP-2) and MMP-9 to maintain elastin content in vivo. In addition, it blocks AngII cascade by downregulating angiotensin type 1 receptor (AT1R) and inhibiting mitogen-activated protein kinases (MAPKs). Taken together, our findings show that BAI is an effective agent for AAA prevention.
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