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Yuan Z, Shu L, Fu J, Yang P, Wang Y, Sun J, Zheng M, Liu Z, Yang J, Song J, Song S, Cai Z. Single-Cell RNA Sequencing Deconstructs the Distribution of Immune Cells Within Abdominal Aortic Aneurysms in Mice. Arterioscler Thromb Vasc Biol 2024; 44:1986-2003. [PMID: 39051127 DOI: 10.1161/atvbaha.124.321129] [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: 04/20/2024] [Accepted: 07/15/2024] [Indexed: 07/27/2024]
Abstract
BACKGROUND Inflammation is a key component in the development of abdominal aortic aneurysm (AAA), yet insights into the roles of immune cells and their interactions in this process are limited. METHODS Using single-cell RNA transcriptomic analysis, we deconstructed the CD45+ cell population in elastase-induced murine AAA at the single-cell level. We isolated each group of immune cells from murine AAA tissue at different time points and divided them into several subtypes, listed the remarkable differentially expressed genes, explored the developmental trajectories of immune cells, and demonstrated the interactions among them. RESULTS Our findings reveal significant differences in several immune cell subsets, including macrophages, dendritic cells, and T cells, within the AAA microenvironment compared with the normal aorta. Especially, conventional dendritic cell type 1 exclusively existed in the AAA tissue rather than the normal aortas. Via CellChat analysis, we identified several intercellular communication pathways like visfatin, which targets monocyte differentiation and neutrophil extracellular trap-mediated interaction between neutrophils and dendritic cells, which might contribute to AAA development. Some of these pathways were validated in human AAA. CONCLUSIONS Despite the absence of external pathogenic stimuli, AAA tissues develop a complex inflammatory microenvironment involving numerous immune cells. In-depth studies of the inflammatory network shall provide new strategies for patients with AAA.
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MESH Headings
- Aortic Aneurysm, Abdominal/immunology
- Aortic Aneurysm, Abdominal/genetics
- Aortic Aneurysm, Abdominal/chemically induced
- Aortic Aneurysm, Abdominal/pathology
- Aortic Aneurysm, Abdominal/metabolism
- Animals
- Single-Cell Analysis
- Disease Models, Animal
- Mice, Inbred C57BL
- Aorta, Abdominal/pathology
- Aorta, Abdominal/metabolism
- Aorta, Abdominal/immunology
- Mice
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Humans
- Macrophages/metabolism
- Macrophages/immunology
- Male
- Transcriptome
- RNA-Seq
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- Gene Expression Profiling/methods
- Pancreatic Elastase
- Cell Communication
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Affiliation(s)
- Zhen Yuan
- Departments of Cardiology (Z.Y., L.S., Y.W., Z.C.), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- State Key Laboratory of Transvascular Implantation Devices, China (Z.Y., L.S., Y.W., Z.C.)
- Cardiovascular Key Laboratory of Zhejiang Province, Hangzhou, China (Z.Y., L.S., Y.W., Z.C.)
| | - Li Shu
- Departments of Cardiology (Z.Y., L.S., Y.W., Z.C.), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- State Key Laboratory of Transvascular Implantation Devices, China (Z.Y., L.S., Y.W., Z.C.)
- Cardiovascular Key Laboratory of Zhejiang Province, Hangzhou, China (Z.Y., L.S., Y.W., Z.C.)
| | - Jiantao Fu
- Institute of Hepatology and Metabolic Diseases, Hangzhou Normal University, China (J.F., P.Y., J.Y.)
| | - Peipei Yang
- Institute of Hepatology and Metabolic Diseases, Hangzhou Normal University, China (J.F., P.Y., J.Y.)
| | - Yidong Wang
- Departments of Cardiology (Z.Y., L.S., Y.W., Z.C.), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- State Key Laboratory of Transvascular Implantation Devices, China (Z.Y., L.S., Y.W., Z.C.)
- Cardiovascular Key Laboratory of Zhejiang Province, Hangzhou, China (Z.Y., L.S., Y.W., Z.C.)
| | - Jie Sun
- Pathology (J. Sun, M.Z.), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Mengsha Zheng
- Pathology (J. Sun, M.Z.), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhenjie Liu
- Vascular Surgery (Z.L.), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jin Yang
- Institute of Hepatology and Metabolic Diseases, Hangzhou Normal University, China (J.F., P.Y., J.Y.)
| | - Jiangping Song
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, China (J. Song, S.S.)
| | - Shen Song
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, China (J. Song, S.S.)
| | - Zhejun Cai
- Departments of Cardiology (Z.Y., L.S., Y.W., Z.C.), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- State Key Laboratory of Transvascular Implantation Devices, China (Z.Y., L.S., Y.W., Z.C.)
- Cardiovascular Key Laboratory of Zhejiang Province, Hangzhou, China (Z.Y., L.S., Y.W., Z.C.)
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2
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Zhu J, Meganathan I, MacAruthur R, Kassiri Z. Inflammation in Abdominal Aortic Aneurysm: cause or co-morbidity? Can J Cardiol 2024:S0828-282X(24)00926-7. [PMID: 39181326 DOI: 10.1016/j.cjca.2024.08.274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 08/12/2024] [Accepted: 08/15/2024] [Indexed: 08/27/2024] Open
Abstract
Aortic aneurysm is a potentially deadly disease. It is chronic degeneration of the aortic wall that involves an inflammatory response and the immune system, aberrant remodeling of the extracellular matrix, and maladaptive transformation of the aortic cells. This review article focuses on the role of the inflammatory cells in abdominal aortic aneurysm. Studies in human aneurysmal specimens and animal models have identified various inflammatory cell types that could contribute to aneurysm formation and or expansion. These include the commonly studied leukocytes (neutrophils and macrophages) as well as the less commonly explored natural killer cells, dendritic cells, T- and B-cells. Despite the well-demonstrated contribution of inflammatory cells and the related signaling pathways to aneurysm development and expansion, anti-inflammatory therapy approaches have demonstrated limitations and may require additional considerations, such as a combinational approach in targeting multiple pathways for significant beneficial outcomes.
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Affiliation(s)
- Jiechun Zhu
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Ilamaran Meganathan
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Roderick MacAruthur
- Department of Cardiac surgery, Mazankowski Alberta Heart Institute, University of Alberta Hospital, Edmonton, AB, Canada
| | - Zamaneh Kassiri
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada.
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Xiang B, Li J, Deng Y, Wang J. Causal relationship between immune cells and aortic aneurysms: a Mendelian randomization study. Eur J Cardiothorac Surg 2024; 65:ezae229. [PMID: 38833686 DOI: 10.1093/ejcts/ezae229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 05/06/2024] [Accepted: 06/03/2024] [Indexed: 06/06/2024] Open
Abstract
OBJECTIVES The causal association between immune cell traits and aortic aneurysm remains unknown. METHODS We performed a bidirectional two-sample Mendelian randomization analysis to explore the causality between 731 immune cell characteristics and the risk of abdominal aortic aneurysm and thoracic aortic aneurysms through publicly available genetic data, respectively. To examine heterogeneity and horizontal pleiotropy, Cochran's Q test and MR-Egger intercept were utilized. Additionally, multivariable Mendelian randomization analysis and meta-analysis were performed in further analysis. RESULTS We found that 20 immune phenotypes had a suggestive causality on abdominal aortic aneurysm, and 15 immune phenotypes had a suggestive causal effect on thoracic aortic aneurysm. After further false discovery rate adjustment (q value <0.1), CD20 on IgD+ CD38- B cell (q = 0.053) and CD127 on CD28+ CD4+ T cell (q = 0.096) were associated with an increased risk of abdominal aortic aneurysm, respectively, indicating a significant causality between them. After adjusting for smoking, there is still statistical significance between CD127 on CD28+ CD4+ T cell and abdominal aortic aneurysm. However, after adjusting for lipids, no statistical significance can be observed between CD127 on CD28+ CD4+ T cells and abdominal aortic aneurysm. Furthermore, there is still statistical significance between CD20 on IgD+ CD38- B cells and abdominal aortic aneurysm after adjusting for lipids and smoking, which was further identified by meta-analysis. CONCLUSIONS We found a causal association between immune cell traits and aortic aneurysm by genetic methods, thus providing new avenues for future mechanism studies.
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Affiliation(s)
- Bitao Xiang
- Department of Cardiovascular Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jia Li
- Department of Cardiovascular Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yao Deng
- Department of Cardiovascular Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Junjie Wang
- Department of Cardiovascular Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
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Momenzadeh A, Kreimer S, Guo D, Ayres M, Berman D, Chyu KY, Shah PK, Milewicz D, Azizzadeh A, Meyer JG, Parker S. Differentiation between descending thoracic aortic diseases using machine learning and plasma proteomic signatures. Clin Proteomics 2024; 21:38. [PMID: 38825704 PMCID: PMC11145886 DOI: 10.1186/s12014-024-09487-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 04/25/2024] [Indexed: 06/04/2024] Open
Abstract
BACKGROUND Descending thoracic aortic aneurysms and dissections can go undetected until severe and catastrophic, and few clinical indices exist to screen for aneurysms or predict risk of dissection. METHODS This study generated a plasma proteomic dataset from 75 patients with descending type B dissection (Type B) and 62 patients with descending thoracic aortic aneurysm (DTAA). Standard statistical approaches were compared to supervised machine learning (ML) algorithms to distinguish Type B from DTAA cases. Quantitatively similar proteins were clustered based on linkage distance from hierarchical clustering and ML models were trained with uncorrelated protein lists across various linkage distances with hyperparameter optimization using fivefold cross validation. Permutation importance (PI) was used for ranking the most important predictor proteins of ML classification between disease states and the proteins among the top 10 PI protein groups were submitted for pathway analysis. RESULTS Of the 1,549 peptides and 198 proteins used in this study, no peptides and only one protein, hemopexin (HPX), were significantly different at an adjusted p < 0.01 between Type B and DTAA cases. The highest performing model on the training set (Support Vector Classifier) and its corresponding linkage distance (0.5) were used for evaluation of the test set, yielding a precision-recall area under the curve of 0.7 to classify between Type B from DTAA cases. The five proteins with the highest PI scores were immunoglobulin heavy variable 6-1 (IGHV6-1), lecithin-cholesterol acyltransferase (LCAT), coagulation factor 12 (F12), HPX, and immunoglobulin heavy variable 4-4 (IGHV4-4). All proteins from the top 10 most important groups generated the following significantly enriched pathways in the plasma of Type B versus DTAA patients: complement activation, humoral immune response, and blood coagulation. CONCLUSIONS We conclude that ML may be useful in differentiating the plasma proteome of highly similar disease states that would otherwise not be distinguishable using statistics, and, in such cases, ML may enable prioritizing important proteins for model prediction.
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Affiliation(s)
- Amanda Momenzadeh
- Department of Computational Biomedicine, Cedars Sinai Medical Center, Los Angeles, CA, USA
- Advanced Clinical Biosystems Research Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA
- Smidt Heart Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Simion Kreimer
- Advanced Clinical Biosystems Research Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA
- Smidt Heart Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Dongchuan Guo
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
| | - Matthew Ayres
- Advanced Clinical Biosystems Research Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Daniel Berman
- Smidt Heart Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA
- Cedars Sinai Imaging Department, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Kuang-Yuh Chyu
- Smidt Heart Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Prediman K Shah
- Smidt Heart Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Dianna Milewicz
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
| | - Ali Azizzadeh
- Smidt Heart Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Jesse G Meyer
- Department of Computational Biomedicine, Cedars Sinai Medical Center, Los Angeles, CA, USA.
- Advanced Clinical Biosystems Research Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA.
- Smidt Heart Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA.
| | - Sarah Parker
- Advanced Clinical Biosystems Research Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA.
- Smidt Heart Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA.
- Department of Biomedical Sciences, Cedars Sinai Medical Center, Los Angeles California, USA.
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5
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Elster C, Ommer-Bläsius M, Lang A, Vajen T, Pfeiler S, Feige M, Yau Pang T, Böttenberg M, Verheyen S, Lê Quý K, Chernigovskaya M, Kelm M, Winkels H, Schmidt SV, Greiff V, Gerdes N. Application and challenges of TCR and BCR sequencing to investigate T- and B-cell clonality in elastase-induced experimental murine abdominal aortic aneurysm. Front Cardiovasc Med 2023; 10:1221620. [PMID: 38034381 PMCID: PMC10686233 DOI: 10.3389/fcvm.2023.1221620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 10/16/2023] [Indexed: 12/02/2023] Open
Abstract
Background An abdominal aortic aneurysm (AAA) is a life-threatening cardiovascular disease. Although its pathogenesis is still poorly understood, recent evidence suggests that AAA displays autoimmune disease characteristics. Particularly, T cells responding to AAA-related antigens in the aortic wall may contribute to an initial immune response. Single-cell RNA (scRNA) T cell receptor (TCR) and B cell receptor (BCR) sequencing is a powerful tool for investigating clonality. However, difficulties such as limited numbers of isolated cells must be considered during implementation and data analysis, making biological interpretation challenging. Here, we perform a representative single-cell immune repertoire analysis in experimental murine AAA and show a reliable bioinformatic processing pipeline highlighting opportunities and limitations of this approach. Methods We performed scRNA TCR and BCR sequencing of isolated lymphocytes from the infrarenal aorta of male C57BL/6J mice 3, 7, 14, and 28 days after AAA induction via elastase perfusion of the aorta. Sham-operated mice at days 3 and 28 and non-operated mice served as controls. Results Comparison of complementarity-determining region (CDR3) length distribution of 179 B cells and 796 T cells revealed neither differences between AAA and control nor between the disease stages. We found no clonal expansion of B cells in AAA. For T cells, we identified several clones in 11 of 16 AAA samples and one of eight control samples. Immune receptor repertoire comparison indicated that only a few clones were shared between the individual AAA samples. The most frequently used V-genes in the TCR beta chain in AAA were TRBV3, TRBV19, and the splicing variant TRBV12-2 + TRBV13-2. Conclusion We found no clonal expansion of B cells but evidence for clonal expansion of T cells in elastase-induced AAA in mice. Our findings imply that a more precise characterization of TCR and BCR distribution requires a more extensive number of lymphocytes to prevent undersampling and potentially detect rare clones. Thus, further experiments are necessary to confirm our findings. In summary, this paper examines TCR and BCR sequencing results, identifies limitations and pitfalls, and offers guidance for future studies.
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Affiliation(s)
- Christin Elster
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty and University Hospital, Heinrich Heine University, Düsseldorf, Germany
| | - Miriam Ommer-Bläsius
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty and University Hospital, Heinrich Heine University, Düsseldorf, Germany
| | - Alexander Lang
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty and University Hospital, Heinrich Heine University, Düsseldorf, Germany
| | - Tanja Vajen
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty and University Hospital, Heinrich Heine University, Düsseldorf, Germany
| | - Susanne Pfeiler
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty and University Hospital, Heinrich Heine University, Düsseldorf, Germany
| | - Milena Feige
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty and University Hospital, Heinrich Heine University, Düsseldorf, Germany
| | - Tin Yau Pang
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty and University Hospital, Heinrich Heine University, Düsseldorf, Germany
- Department of Biology, Institute for Computer Science, Heinrich Heine University, Düsseldorf, Germany
| | - Marius Böttenberg
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty and University Hospital, Heinrich Heine University, Düsseldorf, Germany
| | - Sarah Verheyen
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty and University Hospital, Heinrich Heine University, Düsseldorf, Germany
| | - Khang Lê Quý
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Maria Chernigovskaya
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Malte Kelm
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty and University Hospital, Heinrich Heine University, Düsseldorf, Germany
- Cardiovascular Research Institute Düsseldorf (CARID), Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - Holger Winkels
- Department of Cardiology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Susanne V. Schmidt
- Institute of Innate Immunity, Medical Faculty and University Hospital, Rheinische Friedrich-Wilhelms-University, Bonn, Germany
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany
| | - Victor Greiff
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Norbert Gerdes
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty and University Hospital, Heinrich Heine University, Düsseldorf, Germany
- Cardiovascular Research Institute Düsseldorf (CARID), Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
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Nocun W, Muscogliati R, Al-Tawil M, Jubouri M, Alsmadi AS, Surkhi AO, Bailey DM, Williams IM, Bashir M. Impact of patient demographics and intraoperative characteristics on abdominal aortic aneurysm sac following endovascular repair. Asian Cardiovasc Thorac Ann 2023; 31:633-643. [PMID: 37264635 DOI: 10.1177/02184923231178704] [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] [Indexed: 06/03/2023]
Abstract
BACKGROUND Endovascular aortic repair (EVAR) has become the preferred treatment for abdominal aortic aneurysm (AAA). Its main aim is to seal the perfusion of the aneurysmal sac and, thus, induce sac regression and subsequent aortic remodelling. Aneurysmal sac regression has been linked to the short- and long-term clinical outcomes post-EVAR. It has also been shown to be influenced by endograft device choice, with several of these available commercially. This review summarises and discusses current evidence on the influence of pre- and intraoperative factors on sac regression. Additionally, this review aims to highlight the device-specific variations in sac regression to provide an overall holistic approach to treating AAAs with EVAR. METHODS A comprehensive literature search was conducted using multiple electronic databases to identify and extract relevant data. RESULTS Female sex, >70 mm original sac diameters, higher pre-procedural fibrinogen levels, smoking and low intra-aneurysmal pressure were found to positively impact sac regression. Whereas renal impairment, ischemic heart disease, high intra-aneurysmal pressure and aneurysm neck thrombus negatively influenced sac regression. Patent lumbar arteries, age, statins and hypercholesterolaemia displayed conflicting evidence regarding sac regression. Regarding the EVAR endografts compared, newer generation devices such as the Anaconda mainly showed the most optimal results. CONCLUSION Sac regression following EVAR in AAA is an important prognostic factor for morbidity and mortality. Nevertheless, several pre- and intraoperative factors can have an influence on sac regression. Therefore, it is necessary to take them into account when assessing AAA patients for EVAR to optimise outcomes. The choice of EVAR stent-graft can also affect sac regression, with evidence suggesting that the Fenestrated Anaconda is associated with the most favourable results.
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Affiliation(s)
- Weronika Nocun
- School of Medicine, University of Nottingham, Nottingham, UK
| | | | | | - Matti Jubouri
- Hull York Medical School, University of York, York, UK
| | - Ayah S Alsmadi
- Faculty of Medicine, Jordan University of Science & Technology, Irbid, Jordan
| | | | - Damian M Bailey
- Neurovascular Research Laboratory, Faculty of Life Sciences and Education, University of South Wales, Pontypridd, UK
| | - Ian M Williams
- Department of Vascular Surgery, University Hospital of Wales, Cardiff, UK
| | - Mohamad Bashir
- Vascular and Endovascular Surgery, Velindre University NHS Trust, Health Education and Improvement Wales, Cardiff, UK
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7
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Zhang K, Zhang J, Kan C, Tian H, Ma Y, Huang N, Han F, Hou N, Sun X. Role of dysfunctional peri-organ adipose tissue in metabolic disease. Biochimie 2023; 212:12-20. [PMID: 37019205 DOI: 10.1016/j.biochi.2023.03.015] [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: 12/04/2022] [Revised: 03/21/2023] [Accepted: 03/30/2023] [Indexed: 04/07/2023]
Abstract
Metabolic disease is a complex disorder defined by a group with interrelated factors. There is growing evidence that obesity can lead to a variety of metabolic diseases, including diabetes and cardiovascular disease. Excessive adipose tissue (AT) deposition and ectopic accumulation can lead to increased peri-organ AT thickness. Dysregulation of peri-organ (perivascular, perirenal, and epicardial) AT is strongly associated with metabolic disease and its complications. The mechanisms include secretion of cytokines, activation of immunocytes, infiltration of inflammatory cells, involvement of stromal cells, and abnormal miRNA expression. This review discusses the associations and mechanisms by which various types of peri-organ AT affect metabolic diseases while addressing it as a potential future treatment strategy.
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Affiliation(s)
- Kexin Zhang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Jingwen Zhang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Chengxia Kan
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Hongzhan Tian
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Yanhui Ma
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China; Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Na Huang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Fang Han
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China; Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Ningning Hou
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China.
| | - Xiaodong Sun
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China.
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8
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López-Sanz L, Bernal S, Jiménez-Castilla L, Pardines M, Hernández-García A, Blanco-Colio L, Martín-Ventura JL, Gómez Guerrero C. The presence of activating IgG Fc receptors in macrophages aggravates the development of experimental abdominal aortic aneurysm. CLINICA E INVESTIGACION EN ARTERIOSCLEROSIS : PUBLICACION OFICIAL DE LA SOCIEDAD ESPANOLA DE ARTERIOSCLEROSIS 2023; 35:185-194. [PMID: 36737385 DOI: 10.1016/j.arteri.2022.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/16/2022] [Accepted: 12/22/2022] [Indexed: 02/04/2023]
Abstract
INTRODUCTION Abdominal aortic aneurysm (AAA) is a multifactorial, degenerative disease characterized by progressive aortic dilation and chronic activation of inflammation, proteolytic activity, and oxidative stress in the aortic wall. The immune response triggered by antibodies against antigens present in the vascular wall participates in the formation and progression of AAA through mechanisms not completely understood. This work analyses the function of specific IgG receptors (FcγR), especially those expressed by monocytes/macrophages, in the development of experimental AAA. METHODS In the elastase-induced AAA model, the abdominal aortas from wildtype and FcγR deficient mice with/without macrophage adoptive transfer were analysed by histology and quantitative PCR. In vitro, mouse macrophages were transfected with RNA interference of FcγRIV/CD16.2 or treated with Syk kinase inhibitor before stimulation with IgG immune complexes. RESULTS Macrophage adoptive transfer in FcγR deficient mice increased the susceptibility to AAA development. Mice receiving macrophages with functional FcγR exhibited higher aortic diameter increase, higher content of macrophages and B lymphocytes, and upregulated expression of chemokine CCL2, cytokines (TNF-α and IL-17), metalloproteinase MMP2, prooxidant enzyme NADPH oxidase-2, and the isoforms FcγRIII/CD16 and FcγRIV/CD16.2. In vitro, both FcγRIV/CD16.2 gene silencing and Syk inhibition reduced cytokines and reactive oxygen species production induced by immune complexes in macrophages. CONCLUSIONS Activation of macrophage FcγR contributes to AAA development by inducing mediators of inflammation, proteolysis, and oxidative stress. Modulation of FcγR or effector molecules may represent a potential target for AAA treatment.
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Affiliation(s)
- Laura López-Sanz
- Laboratorio de Patología Vascular y Renal, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz, Universidad Autónoma de Madrid (IIS-FJD/UAM), Madrid, España; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas (CIBERDEM), Madrid, España
| | - Susana Bernal
- Laboratorio de Patología Vascular y Renal, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz, Universidad Autónoma de Madrid (IIS-FJD/UAM), Madrid, España; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas (CIBERDEM), Madrid, España
| | - Luna Jiménez-Castilla
- Laboratorio de Patología Vascular y Renal, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz, Universidad Autónoma de Madrid (IIS-FJD/UAM), Madrid, España; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas (CIBERDEM), Madrid, España
| | - Marisa Pardines
- Laboratorio de Patología Vascular y Renal, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz, Universidad Autónoma de Madrid (IIS-FJD/UAM), Madrid, España
| | - Ana Hernández-García
- Laboratorio de Patología Vascular y Renal, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz, Universidad Autónoma de Madrid (IIS-FJD/UAM), Madrid, España
| | - Luis Blanco-Colio
- Laboratorio de Patología Vascular y Renal, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz, Universidad Autónoma de Madrid (IIS-FJD/UAM), Madrid, España; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, España
| | - José Luis Martín-Ventura
- Laboratorio de Patología Vascular y Renal, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz, Universidad Autónoma de Madrid (IIS-FJD/UAM), Madrid, España; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, España
| | - Carmen Gómez Guerrero
- Laboratorio de Patología Vascular y Renal, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz, Universidad Autónoma de Madrid (IIS-FJD/UAM), Madrid, España; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas (CIBERDEM), Madrid, España.
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Li C, Liu Z, Yuan G, Liu Y, Wang W. Abdominal Aortic Aneurysm and PET/CT: From Molecular Mechanisms to Potential Molecular Imaging Targets. Rev Cardiovasc Med 2023; 24:132. [PMID: 39076752 PMCID: PMC11273052 DOI: 10.31083/j.rcm2405132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/23/2022] [Accepted: 01/03/2023] [Indexed: 07/31/2024] Open
Abstract
Abdominal aortic aneurysm (AAA) is the most common and critical aortic disease. Bleeding is the most serious complication from a ruptured AAA, which often results in death. Therefore, early diagnosis and treatment are the only effective means to reduce AAA associated mortality. Positron emission tomography/computed tomography (PET/CT) combines functional and anatomical imaging. The expanded application of PET/CT in the medical field could have benefits for the diagnosis and treatment of patients with AAA. This review explores the efficiency of PET/CT in the diagnosis of AAA based on our understanding of the underlying molecular mechanisms of AAA development.
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Affiliation(s)
- Chenhao Li
- Department of General Surgery (Vascular Surgery), The Affiliated Hospital of Southwest Medical University, 646000 Luzhou, Sichuan, China
| | - Zhiyin Liu
- Department of Neurology, The Affiliated Hospital of Southwest Medical University, 646000 Luzhou, Sichuan, China
| | - Gang Yuan
- The State Key Laboratory of Quality Research in Chinese Medicine of Macau University of Science and Technology, Avenida Wai Long, 999078 Taipa, Macau
| | - Yong Liu
- Department of General Surgery (Vascular Surgery), The Affiliated Hospital of Southwest Medical University, 646000 Luzhou, Sichuan, China
- Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province, (Collaborative Innovation Center for Prevention of Cardiovascular Diseases) Institute of Cardiovascular Research, Southwest Medical University, 646000 Luzhou, Sichuan, China
| | - Weiming Wang
- Department of General Surgery (Vascular Surgery), The Affiliated Hospital of Southwest Medical University, 646000 Luzhou, Sichuan, China
- Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province, (Collaborative Innovation Center for Prevention of Cardiovascular Diseases) Institute of Cardiovascular Research, Southwest Medical University, 646000 Luzhou, Sichuan, China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, The Affiliated Hospital of Southwest Medical University, 646000 Luzhou, Sichuan, China
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Xu Y, Yang S, Xue G. The role of long non-coding RNA in abdominal aortic aneurysm. Front Genet 2023; 14:1153899. [PMID: 37007957 PMCID: PMC10050724 DOI: 10.3389/fgene.2023.1153899] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 02/28/2023] [Indexed: 03/17/2023] Open
Abstract
The abdominal aortic aneurysm (AAA) is characterized by segmental expansion of the abdominal aorta and a high mortality rate. The characteristics of AAA suggest that apoptosis of smooth muscle cells, the production of reactive oxygen species, and inflammation are potential pathways for the formation and development of AAA. Long non-coding RNA (lncRNA) is becoming a new and essential regulator of gene expression. Researchers and physicians are focusing on these lncRNAs to use them as clinical biomarkers and new treatment targets for AAAs. LncRNA studies are beginning to emerge, suggesting that they may play a significant but yet unidentified role in vascular physiology and disease. This review examines the role of lncRNA and their target genes in AAA to increase our understanding of the disease’s onset and progression, which is crucial for developing potential AAA therapies.
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11
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The mechanism and therapy of aortic aneurysms. Signal Transduct Target Ther 2023; 8:55. [PMID: 36737432 PMCID: PMC9898314 DOI: 10.1038/s41392-023-01325-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 12/15/2022] [Accepted: 01/14/2023] [Indexed: 02/05/2023] Open
Abstract
Aortic aneurysm is a chronic aortic disease affected by many factors. Although it is generally asymptomatic, it poses a significant threat to human life due to a high risk of rupture. Because of its strong concealment, it is difficult to diagnose the disease in the early stage. At present, there are no effective drugs for the treatment of aneurysms. Surgical intervention and endovascular treatment are the only therapies. Although current studies have discovered that inflammatory responses as well as the production and activation of various proteases promote aortic aneurysm, the specific mechanisms remain unclear. Researchers are further exploring the pathogenesis of aneurysms to find new targets for diagnosis and treatment. To better understand aortic aneurysm, this review elaborates on the discovery history of aortic aneurysm, main classification and clinical manifestations, related molecular mechanisms, clinical cohort studies and animal models, with the ultimate goal of providing insights into the treatment of this devastating disease. The underlying problem with aneurysm disease is weakening of the aortic wall, leading to progressive dilation. If not treated in time, the aortic aneurysm eventually ruptures. An aortic aneurysm is a local enlargement of an artery caused by a weakening of the aortic wall. The disease is usually asymptomatic but leads to high mortality due to the risk of artery rupture.
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12
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Ruan P, Gao L, Jiang H, Chu T, Ge J, Kong X. Identification of PTPN22 as a potential genetic biomarker for abdominal aortic aneurysm. Front Cardiovasc Med 2022; 9:1061771. [PMID: 36588574 PMCID: PMC9797128 DOI: 10.3389/fcvm.2022.1061771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 11/29/2022] [Indexed: 12/15/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is a severe life-threatening disease that is generally asymptomatic and is diagnosed at a very late stage. The genetic component underpinning AAA is considerable, with an estimated heritability of up to 70%. Therefore, identifying genetic biomarkers for AAA is valuable for predicting high-risk populations. We used integrative bioinformatics and cellular AAA model-based validation to reveal that the gene encoding protein tyrosine phosphatase non-receptor type 22 (PTPN22) may be a potentially useful diagnostic biomarker for AAA. Integrative bioinformatics analyses of clinical specimens showed that PTPN22 expression was consistently upregulated in aortic tissues and peripheral blood mononuclear cells (PBMCs) derived from patients with AAA. Moreover, transcriptomics data revealed that PTPN22 is a potential biomarker for AAA with limited diagnostic value in patients with thoracic aortic aneurysm/dissection. Single-cell RNA sequencing-based findings further highlight PTPN22 expression in aortic immune cells and vascular smooth muscle cells (VSMCs) is consistently upregulated in patients with AAA. A cellular AAA model was eventually employed to verify the increase in PTPN22 expression. Collectively, the results indicate that PTPN22 could be a potentially useful diagnostic biomarker for AAA.
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13
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Type I Interferon Receptor Subunit 1 Deletion Attenuates Experimental Abdominal Aortic Aneurysm Formation. Biomolecules 2022; 12:biom12101541. [PMID: 36291750 PMCID: PMC9599283 DOI: 10.3390/biom12101541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 11/16/2022] Open
Abstract
Objective: Type I interferon receptor signaling contributes to several autoimmune and vascular diseases such as lupus, atherosclerosis and stroke. The purpose of this study was to assess the influence of type I interferon receptor deficiency on the formation and progression of experimental abdominal aortic aneurysms (AAAs). Methods: AAAs were induced in type I interferon receptor subunit 1 (IFNAR1)-deficient and wild type control male mice via intra-infrarenal aortic infusion of porcine pancreatic elastase. Immunostaining for IFNAR1 was evaluated in experimental and clinical aneurysmal abdominal aortae. The initiation and progression of experimental AAAs were assessed via ultrasound imaging prior to (day 0) and days 3, 7 and 14 following elastase infusion. Aneurysmal histopathology was analyzed at sacrifice. Results: Increased aortic medial and adventitial IFNAR1 expression was present in both clinical AAAs harvested at surgery and experimental AAAs. Following AAA induction, wild type mice experienced progressive, time-dependent infrarenal aortic enlargement. This progression was substantially attenuated in IFNAR1-deficient mice. On histological analyses, medial elastin degradation, smooth muscle cell depletion, leukocyte accumulation and neoangiogenesis were markedly diminished in IFNAR1-deficient mice in comparison to wild type mice. Conclusion: IFNAR1 deficiency limited experimental AAA progression in response to intra-aortic elastase infusion. Combined with clinical observations, these results suggest an important role for IFNAR1 activity in AAA pathogenesis.
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14
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Márquez-Sánchez AC, Koltsova EK. Immune and inflammatory mechanisms of abdominal aortic aneurysm. Front Immunol 2022; 13:989933. [PMID: 36275758 PMCID: PMC9583679 DOI: 10.3389/fimmu.2022.989933] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 08/23/2022] [Indexed: 11/13/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is a life-threatening cardiovascular disease. Immune-mediated infiltration and a destruction of the aortic wall during AAA development plays significant role in the pathogenesis of this disease. While various immune cells had been found in AAA, the mechanisms of their activation and function are still far from being understood. A better understanding of mechanisms regulating the development of aberrant immune cell activation in AAA is essential for the development of novel preventive and therapeutic approaches. In this review we summarize current knowledge about the role of immune cells in AAA and discuss how pathogenic immune cell activation is regulated in this disease.
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15
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Cheng S, Liu Y, Jing Y, Jiang B, Wang D, Chu X, Jia L, Xin S. Identification of key monocytes/macrophages related gene set of the early-stage abdominal aortic aneurysm by integrated bioinformatics analysis and experimental validation. Front Cardiovasc Med 2022; 9:950961. [PMID: 36186997 PMCID: PMC9515382 DOI: 10.3389/fcvm.2022.950961] [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: 05/23/2022] [Accepted: 08/25/2022] [Indexed: 11/29/2022] Open
Abstract
Objective Abdominal aortic aneurysm (AAA) is a lethal peripheral vascular disease. Inflammatory immune cell infiltration is a central part of the pathogenesis of AAA. It’s critical to investigate the molecular mechanisms underlying immune infiltration in early-stage AAA and look for a viable AAA marker. Methods In this study, we download several mRNA expression datasets and scRNA-seq datasets of the early-stage AAA models from the NCBI-GEO database. mMCP-counter and CIBERSORT were used to assess immune infiltration in early-stage experimental AAA. The scRNA-seq datasets were then utilized to analyze AAA-related gene modules of monocytes/macrophages infiltrated into the early-stage AAA by Weighted Correlation Network analysis (WGCNA). After that, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) functional enrichment analysis for the module genes was performed by ClusterProfiler. The STRING database was used to create the protein-protein interaction (PPI) network. The Differentially Expressed Genes (DEGs) of the monocytes/macrophages were explored by Limma-Voom and the key gene set were identified. Then We further examined the expression of key genes in the human AAA dataset and built a logistic diagnostic model for distinguishing AAA patients and healthy people. Finally, real-time quantitative polymerase chain reaction (RT-qPCR) and Enzyme Linked Immunosorbent Assay (ELISA) were performed to validate the gene expression and serum protein level between the AAA and healthy donor samples in our cohort. Results Monocytes/macrophages were identified as the major immune cells infiltrating the early-stage experimental AAA. After pseudocell construction of monocytes/macrophages from scRNA-seq datasets and WGCNA analysis, four gene modules from two datasets were identified positively related to AAA, mainly enriched in Myeloid Leukocyte Migration, Collagen-Containing Extracellular matrix, and PI3K-Akt signaling pathway by functional enrichment analysis. Thbs1, Clec4e, and Il1b were identified as key genes among the hub genes in the modules, and the high expression of Clec4e, Il1b, and Thbs1 was confirmed in the other datasets. Then, in human AAA transcriptome datasets, the high expression of CLEC4E, IL1B was confirmed and a logistic regression model based on the two gene expressions was built, with an AUC of 0.9 in the train set and 0.79 in the validated set. Additionally, in our cohort, we confirmed the increased serum protein levels of IL-1β and CLEC4E in AAA patients as well as the increased expression of these two genes in AAA aorta samples. Conclusion This study identified monocytes/macrophages as the main immune cells infiltrated into the early-stage AAA and constructed a logistic regression model based on monocytes/macrophages related gene set. This study could aid in the early diagnostic of AAA.
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Affiliation(s)
- Shuai Cheng
- Department of Vascular and Thyroid Surgery, The First Hospital, China Medical University, Shenyang, China
- Key Laboratory of Pathogenesis, Prevention, and Therapeutics of Aortic Aneurysm in Liaoning Province, Shenyang, China
- Regenerative Medicine Research Center of China Medical University, Shenyang, China
| | - Yuanlin Liu
- Department of Vascular and Thyroid Surgery, The First Hospital, China Medical University, Shenyang, China
- Key Laboratory of Pathogenesis, Prevention, and Therapeutics of Aortic Aneurysm in Liaoning Province, Shenyang, China
- Regenerative Medicine Research Center of China Medical University, Shenyang, China
| | - Yuchen Jing
- Department of Vascular and Thyroid Surgery, The First Hospital, China Medical University, Shenyang, China
- Key Laboratory of Pathogenesis, Prevention, and Therapeutics of Aortic Aneurysm in Liaoning Province, Shenyang, China
- Regenerative Medicine Research Center of China Medical University, Shenyang, China
| | - Bo Jiang
- Department of Vascular and Thyroid Surgery, The First Hospital, China Medical University, Shenyang, China
- Key Laboratory of Pathogenesis, Prevention, and Therapeutics of Aortic Aneurysm in Liaoning Province, Shenyang, China
- Regenerative Medicine Research Center of China Medical University, Shenyang, China
| | - Ding Wang
- Department of Vascular and Thyroid Surgery, The First Hospital, China Medical University, Shenyang, China
- Key Laboratory of Pathogenesis, Prevention, and Therapeutics of Aortic Aneurysm in Liaoning Province, Shenyang, China
- Regenerative Medicine Research Center of China Medical University, Shenyang, China
| | - Xiangyu Chu
- Department of Vascular and Thyroid Surgery, The First Hospital, China Medical University, Shenyang, China
- Key Laboratory of Pathogenesis, Prevention, and Therapeutics of Aortic Aneurysm in Liaoning Province, Shenyang, China
- Regenerative Medicine Research Center of China Medical University, Shenyang, China
| | - Longyuan Jia
- Department of Vascular and Thyroid Surgery, The First Hospital, China Medical University, Shenyang, China
- Key Laboratory of Pathogenesis, Prevention, and Therapeutics of Aortic Aneurysm in Liaoning Province, Shenyang, China
- Regenerative Medicine Research Center of China Medical University, Shenyang, China
| | - Shijie Xin
- Department of Vascular and Thyroid Surgery, The First Hospital, China Medical University, Shenyang, China
- Key Laboratory of Pathogenesis, Prevention, and Therapeutics of Aortic Aneurysm in Liaoning Province, Shenyang, China
- Regenerative Medicine Research Center of China Medical University, Shenyang, China
- *Correspondence: Shijie Xin,
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Li S, Meng J, Lv Y, Wang Q, Tian X, Li M, Zeng X, Hu C, Zheng Y. Changes in Serum IgG Glycosylation Patterns for Abdominal Aortic Aneurysm Patients. J Cardiovasc Dev Dis 2022; 9:jcdd9090291. [PMID: 36135436 PMCID: PMC9502462 DOI: 10.3390/jcdd9090291] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Background: B cells and autoantibodies play an important role in the pathogenesis of abdominal aortic aneurysm (AAA). IgG glycosylations are highly valued as potential disease biomarkers and therapeutic targets. Methods: Lectin microarray was applied to analyze the expression profile of serum IgG glycosylation in 75 patients with AAA, 68 autoimmune disease controls, and 100 healthy controls. Lectin blots were performed to validate the differences. The clinical relevance of lectins binding from the microarray results was explored in AAA patients. Results: Significantly lower binding level of SBA (preferred GalNAc) was observed for the AAA group compared with DCs (p < 0.001) and HCs (p = 0.049). A significantly lower binding level of ConA (preferred mannose) was observed in patients with aneurysm diameter >5 cm. Significantly higher binding of CSA (preferred GalNAc) was present for dyslipidemia patients, whereas a lower binding level of AAL (preferred fucose) was observed for hypertensive patients. Patients with diabetes had lower binding levels of IRA (preferred GalNAc) and HPA (preferred GalNAc) compared with those not with DM. PTL-L (R = 0.36, p = 0.0015, preferred GalNAc) was positively associated with aneurysm diameters, whereas DSL (R = 0.28, p = 0.014, preferred (GlcNAc)2-4) was positively associated with patients’ age. Symptomatic patients had a lower binding level of ConA (p = 0.032), and patients with coronary heart disease had higher binding levels of STL (p = 0.0029, preferred GlcNAc). Patients with ILT bound less with black bean crude (p = 0.04, preferred GalNAc). Conclusions: AAA was associated with a decreased IgG binding level of SBA (recognizing glycan GalNAc). Symptomatic patients with aneurysm <5 cm had a higher binding level of ConA (preferred mannose). Coronary heart disease and elder age were associated with increased IgG bisecting GlcNAc. IgG O-glycosylation (GalNAc) may play an important role in AAA pathogenesis and progression.
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Affiliation(s)
- Siting Li
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100010, China
- Department of State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100010, China
| | - Jingjing Meng
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing 100730, China
- Department of Clinical Laboratory, Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yanze Lv
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100010, China
- Department of State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100010, China
| | - Qian Wang
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing 100730, China
| | - Xinping Tian
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing 100730, China
| | - Mengtao Li
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing 100730, China
| | - Xiaofeng Zeng
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing 100730, China
| | - Chaojun Hu
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing 100730, China
- Correspondence: (C.H.); (Y.Z.)
| | - Yuehong Zheng
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100010, China
- Department of State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100010, China
- Correspondence: (C.H.); (Y.Z.)
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Xiong T, Lv XS, Wu GJ, Guo YX, Liu C, Hou FX, Wang JK, Fu YF, Liu FQ. Single-Cell Sequencing Analysis and Multiple Machine Learning Methods Identified G0S2 and HPSE as Novel Biomarkers for Abdominal Aortic Aneurysm. Front Immunol 2022; 13:907309. [PMID: 35769488 PMCID: PMC9234288 DOI: 10.3389/fimmu.2022.907309] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/06/2022] [Indexed: 11/20/2022] Open
Abstract
Identifying biomarkers for abdominal aortic aneurysms (AAA) is key to understanding their pathogenesis, developing novel targeted therapeutics, and possibly improving patients outcomes and risk of rupture. Here, we identified AAA biomarkers from public databases using single-cell RNA-sequencing, weighted co-expression network (WGCNA), and differential expression analyses. Additionally, we used the multiple machine learning methods to identify biomarkers that differentiated large AAA from small AAA. Biomarkers were validated using GEO datasets. CIBERSORT was used to assess immune cell infiltration into AAA tissues and investigate the relationship between biomarkers and infiltrating immune cells. Therefore, 288 differentially expressed genes (DEGs) were screened for AAA and normal samples. The identified DEGs were mostly related to inflammatory responses, lipids, and atherosclerosis. For the large and small AAA samples, 17 DEGs, mostly related to necroptosis, were screened. As biomarkers for AAA, G0/G1 switch 2 (G0S2) (Area under the curve [AUC] = 0.861, 0.875, and 0.911, in GSE57691, GSE47472, and GSE7284, respectively) and for large AAA, heparinase (HPSE) (AUC = 0.669 and 0.754, in GSE57691 and GSE98278, respectively) were identified and further verified by qRT-PCR. Immune cell infiltration analysis revealed that the AAA process may be mediated by T follicular helper (Tfh) cells and the large AAA process may also be mediated by Tfh cells, M1, and M2 macrophages. Additionally, G0S2 expression was associated with neutrophils, activated and resting mast cells, M0 and M1 macrophages, regulatory T cells (Tregs), resting dendritic cells, and resting CD4 memory T cells. Moreover, HPSE expression was associated with M0 and M1 macrophages, activated and resting mast cells, Tregs, and resting CD4 memory T cells. Additional, G0S2 may be an effective diagnostic biomarker for AAA, whereas HPSE may be used to confer risk of rupture in large AAAs. Immune cells play a role in the onset and progression of AAA, which may improve its diagnosis and treatment.
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Affiliation(s)
- Tao Xiong
- Department of Cardiovascular, Shaanxi Provincial People’s Hospital, Xi’an, China
- Department of Cardiovascular Surgery, Yan'an Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xiao-Shuo Lv
- Department of Cardiovascular Surgery, China-Japan Friendship Hospital, Beijing, China
| | - Gu-Jie Wu
- Department of Cardiothoracic Surgery, Affiliated Hospital of Nantong University, Nantong, China
| | - Yao-Xing Guo
- Department of Pathology, College of Basic Medical Sciences China Medical University, Shenyang, China
| | - Chang Liu
- Department of Cardiovascular Surgery, Yan'an Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Fang-Xia Hou
- Department of Cardiovascular, Shaanxi Provincial People’s Hospital, Xi’an, China
| | - Jun-Kui Wang
- Department of Cardiovascular, Shaanxi Provincial People’s Hospital, Xi’an, China
| | - Yi-Fan Fu
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Fu-Qiang Liu
- Department of Cardiovascular, Shaanxi Provincial People’s Hospital, Xi’an, China
- *Correspondence: Fu-Qiang Liu,
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Guo C, Liu Z, Yu Y, Zhou Z, Ma K, Zhang L, Dang Q, Liu L, Wang L, Zhang S, Hua Z, Han X, Li Z. EGR1 and KLF4 as Diagnostic Markers for Abdominal Aortic Aneurysm and Associated With Immune Infiltration. Front Cardiovasc Med 2022; 9:781207. [PMID: 35224035 PMCID: PMC8863960 DOI: 10.3389/fcvm.2022.781207] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 01/11/2022] [Indexed: 01/08/2023] Open
Abstract
Background Formation and rupture of abdominal aortic aneurysm (AAA) is fatal, and the pathological processes and molecular mechanisms underlying its formation and development are unclear. Perivascular adipose tissue (PVAT) has attracted extensive attention as a newly defined secretory organ, and we aim to explore the potential association between PVAT and AAA. Methods We analyzed gene expression and clinical data of 30 PVAT around AAA and 30 PVAT around normal abdominal aorta (NAA). The diagnostic markers and immune cell infiltration of PVAT were further investigated by WGCNA, CIBERSORT, PPI, and multiple machine learning algorisms (including LASSO, RF, and SVM). Subsequently, eight-week-old C57BL/6 male mice (n = 10) were used to construct AAA models, and aorta samples were collected for molecular validation. Meanwhile, fifty-five peripheral venous blood samples from patients (AAA vs. normal: 40:15) in our hospital were used as an inhouse cohort to validate the diagnostic markers by qRT-PCR. The diagnostic efficacy of biomarkers was assessed by receiver operating characteristic (ROC) curve, area under the ROC (AUC), and concordance index (C-index). Results A total of 75 genes in the Grey60 module were identified by WGCNA. To select the genes most associated with PVAT in the grey60 module, three algorithms (including LASSO, RF, and SVM) and PPI were applied. EGR1 and KLF4 were identified as diagnostic markers of PVAT, with high accurate AUCs of 0.916, 0.926, and 0.948 (combined two markers). Additionally, the two biomarkers also displayed accurate diagnostic efficacy in the mice and inhouse cohorts, with AUCs and C-indexes all >0.8. Compared with the NAA group, PVAT around AAA was more abundant in multiple immune cell infiltration. Ultimately, the immune-related analysis revealed that EGR1 and KLF4 were associated with mast cells, T cells, and plasma cells. Conclusion EGR1 and KLF4 were diagnostic markers of PVAT around AAA and associated with multiple immune cells.
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Affiliation(s)
- Chunguang Guo
- Department of Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zaoqu Liu
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yin Yu
- Department of Pathophysiology, School of Basic Medical Sciences, The Academy of Medical Science, Zhengzhou University, Zhengzhou, China
| | - Zhibin Zhou
- Department of Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ke Ma
- Department of Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Linfeng Zhang
- Department of Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Qin Dang
- Department of Colorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Long Liu
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Libo Wang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shuai Zhang
- Department of Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhaohui Hua
- Department of Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xinwei Han
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhen Li
- Department of Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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19
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Li B, Song X, Guo W, Hou Y, Hu H, Ge W, Fan T, Han Z, Li Z, Yang P, Gao R, Zhao H, Wang J. Single-Cell Transcriptome Profiles Reveal Fibrocytes as Potential Targets of Cell Therapies for Abdominal Aortic Aneurysm. Front Cardiovasc Med 2021; 8:753711. [PMID: 34901214 PMCID: PMC8652037 DOI: 10.3389/fcvm.2021.753711] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 10/22/2021] [Indexed: 11/13/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is potentially life-threatening in aging population due to the risk of aortic rupture and a lack of optimal treatment. The roles of different vascular and immune cells in AAA formation and pathogenesis remain to be future characterized. Single-cell RNA sequencing was performed on an angiotensin (Ang) II-induced mouse model of AAA. Macrophages, B cells, T cells, fibroblasts, smooth muscle cells and endothelial cells were identified through bioinformatic analyses. The discovery of multiple subtypes of macrophages, such as the re-polarization of Trem2+Acp5+ osteoclast-like and M2-like macrophages toward the M1 type macrophages, indicates the heterogenous nature of macrophages during AAA development. More interestingly, we defined CD45+COL1+ fibrocytes, which was further validated by flow cytometry and immunostaining in mouse and human AAA tissues. We then reconstituted these fibrocytes into mice with Ang II-induced AAA and found the recruitment of these fibrocytes in mouse AAA. More importantly, the fibrocyte treatment exhibited a protective effect against AAA development, perhaps through modulating extracellular matrix production and thus enhancing aortic stability. Our study reveals the heterogeneity of macrophages and the involvement of a novel cell type, fibrocyte, in AAA. Fibrocyte may represent a potential cell therapy target for AAA.
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Affiliation(s)
- Bolun Li
- State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Xiaomin Song
- State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Wenjun Guo
- State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Yangfeng Hou
- State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Huiyuan Hu
- State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.,First Clinical College, Xi'an Jiaotong University, ShaanXi, China
| | - Weipeng Ge
- State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Tianfei Fan
- State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Zhifa Han
- State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.,Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, China
| | - Zhiwei Li
- State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Peiran Yang
- State Key Laboratory of Medical Molecular Biology, Department of Physiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Ran Gao
- State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Hongmei Zhao
- State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Jing Wang
- State Key Laboratory of Medical Molecular Biology, Department of Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
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20
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Rodríguez-Carrio J, Cerro-Pardo I, Lindholt JS, Bonzon-Kulichenko E, Martínez-López D, Roldán-Montero R, Escolà-Gil JC, Michel JB, Blanco-Colio LM, Vázquez J, Suárez A, Martín-Ventura JL. Malondialdehyde-modified HDL particles elicit a specific IgG response in abdominal aortic aneurysm. Free Radic Biol Med 2021; 174:171-181. [PMID: 34364980 DOI: 10.1016/j.freeradbiomed.2021.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/22/2021] [Accepted: 08/04/2021] [Indexed: 11/19/2022]
Abstract
High Density Lipoprotein (HDL) plays a protective role in abdominal aortic aneurysm (AAA); however, recent findings suggest that oxidative modifications could lead to dysfunctional HDL in AAA. This study aimed at testing the effect of oxidized HDL on aortic lesions and humoral immune responses in a mouse model of AAA induced by elastase, and evaluating whether antibodies against modified HDL can be found in AAA patients. HDL particles were oxidized with malondialdehyde (HDL-MDA) and the changes were studied by biochemical and proteomics approaches. Experimental AAA was induced in mice by elastase perfusion and then mice were treated with HDL-MDA, HDL or vehicle for 14 days. Aortic lesions were studied by histomorphometric analysis. Levels of anti-HDL-MDA IgG antibodies were measured by an in-house immunoassay in the mouse model, in human tissue-supernatants and in plasma samples from the VIVA cohort. HDL oxidation with MDA was confirmed by enhanced susceptibility to diene formation. Proteomics demonstrated the presence of MDA adducts on Lysine residues of HDL proteins, mainly ApoA-I. MDA-modification of HDL abrogated the protective effect of HDL on cultured endothelial cells as well as on AAA dilation in mice. Exposure to HDL-MDA elicited an anti-HDL-MDA IgG response in mice. Anti-HDL-MDA were also detected in tissue-conditioned media from AAA patients, mainly in intraluminal thrombus. Higher plasma levels of anti-HDL-MDA IgG antibodies were found in AAA patients compared to controls. Anti-HDL-MDA levels were associated with smoking and were independent predictors of overall mortality in AAA patients. Overall, MDA-oxidized HDL trigger a specific humoral immune response in mice. Besides, antibodies against HDL-MDA can be detected in tissue and plasma of AAA patients, suggesting its potential use as surrogate stable biomarkers of oxidative stress in AAA.
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Affiliation(s)
- Javier Rodríguez-Carrio
- Area of Immunology, University of Oviedo, Instituto de Salud Del Principado de Asturias (ISPA), Oviedo, Asturias, Spain
| | | | - Jes S Lindholt
- Department of Cardiothoracic and Vascular Surgery, Odense University Hospital, Odense, Denmark
| | - Elena Bonzon-Kulichenko
- Laboratorio de Proteómica Cardiovascular, CNIC, Madrid, Spain; CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | | | | | - Joan-Carles Escolà-Gil
- Institut de Investigació Biomédica Sant Pau, Spain; CIBER de Diabetes y Enfermedades Metabólicas (CIBERDEM), Barcelona, Spain
| | | | - Luis Miguel Blanco-Colio
- IIS-Fundación Jiménez-Díaz, Madrid, Spain; CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Jesús Vázquez
- Laboratorio de Proteómica Cardiovascular, CNIC, Madrid, Spain; CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Ana Suárez
- Area of Immunology, University of Oviedo, Instituto de Salud Del Principado de Asturias (ISPA), Oviedo, Asturias, Spain
| | - José Luis Martín-Ventura
- IIS-Fundación Jiménez-Díaz, Madrid, Spain; CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain.
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21
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Abstract
B cells are traditionally known for their ability to produce antibodies in the context of adaptive immune responses. However, over the last decade B cells have been increasingly recognized as modulators of both adaptive and innate immune responses, as well as players in an important role in the pathogenesis of a variety of human diseases. Here, after briefly summarizing our current understanding of B cell biology, we present a systematic review of the literature from both animal models and human studies that highlight the important role that B lymphocytes play in cardiac and vascular disease. While many aspects of B cell biology in the vasculature and, to an even greater extent, in the heart remain unclear, B cells are emerging as key regulators of cardiovascular adaptation to injury.
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Affiliation(s)
- Luigi Adamo
- Center for Cardiovascular Research, Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, USA; , ,
| | - Cibele Rocha-Resende
- Center for Cardiovascular Research, Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, USA; , ,
| | - Douglas L Mann
- Center for Cardiovascular Research, Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, USA; , ,
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22
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Lopez‐Sanz L, Bernal S, Jimenez‐Castilla L, Prieto I, La Manna S, Gomez‐Lopez S, Blanco‐Colio LM, Egido J, Martin‐Ventura JL, Gomez‐Guerrero C. Fcγ receptor activation mediates vascular inflammation and abdominal aortic aneurysm development. Clin Transl Med 2021; 11:e463. [PMID: 34323424 PMCID: PMC8255062 DOI: 10.1002/ctm2.463] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 05/24/2021] [Accepted: 05/30/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Abdominal aortic aneurysm (AAA), a degenerative vascular pathology characterized by permanent dilation of the aorta, is considered a chronic inflammatory disease involving innate/adaptive immunity. However, the functional role of antibody-dependent immune response against antigens present in the damaged vessel remains unresolved. We hypothesized that engagement of immunoglobulin G (IgG) Fc receptors (FcγR) by immune complexes (IC) in the aortic wall contributes to AAA development. We therefore evaluated FcγR expression in AAA lesions and analysed whether inhibition of FcγR signaling molecules (γ-chain and Syk kinase) influences AAA formation in mice. METHODS FcγR gene/protein expression was assessed in human and mouse AAA tissues. Experimental AAA was induced by aortic elastase perfusion in wild-type (WT) mice and γ-chain knockout (γKO) mice (devoid of activating FcγR) in combination with macrophage adoptive transfer or Syk inhibitor treatment. To verify the mechanisms of FcγR in vitro, vascular smooth muscle cells (VSMC) and macrophages were stimulated with IgG IC. RESULTS FcγR overexpression was detected in adventitia and media layers of human and mouse AAA. Elastase-perfused γKO mice exhibited a decrease in AAA incidence, aortic dilation, elastin degradation, and VSMC loss. This was associated with (1) reduced infiltrating leukocytes and immune deposits in AAA lesions, (2) inflammatory genes and metalloproteinases downregulation, (3) redox balance restoration, and (4) converse phenotype of anti-inflammatory macrophage M2 and contractile VSMC. Adoptive transfer of FcγR-expressing macrophages aggravated aneurysm in γKO mice. In vitro, FcγR deficiency attenuated inflammatory gene expression, oxidative stress, and phenotypic switch triggered by IC. Additionally, Syk inhibition prevented IC-mediated cell responses, reduced inflammation, and mitigated AAA formation. CONCLUSION Our findings provide insight into the role and mechanisms mediating IgG-FcγR-associated inflammation and aortic wall injury in AAA, which might represent therapeutic targets against AAA disease.
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MESH Headings
- Animals
- Antigen-Antibody Complex/adverse effects
- Aorta, Abdominal/metabolism
- Aorta, Abdominal/pathology
- Aortic Aneurysm, Abdominal/pathology
- Aortic Aneurysm, Abdominal/prevention & control
- Disease Models, Animal
- Humans
- Immunoglobulin gamma-Chains/genetics
- Immunoglobulin gamma-Chains/metabolism
- Inflammation/metabolism
- Inflammation/pathology
- Macrophages/cytology
- Macrophages/immunology
- Macrophages/metabolism
- Male
- Matrix Metalloproteinases/genetics
- Matrix Metalloproteinases/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/metabolism
- Niacinamide/analogs & derivatives
- Niacinamide/therapeutic use
- Oxidative Stress
- Pancreatic Elastase/adverse effects
- Pyrimidines/therapeutic use
- Receptors, IgG/genetics
- Receptors, IgG/metabolism
- Syk Kinase/antagonists & inhibitors
- Syk Kinase/metabolism
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Affiliation(s)
- Laura Lopez‐Sanz
- Renal, Vascular and Diabetes Research LabIIS‐Fundacion Jimenez Diaz (IIS‐FJD)MadridSpain
- Universidad Autonoma de Madrid (UAM)MadridSpain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM)MadridSpain
| | - Susana Bernal
- Renal, Vascular and Diabetes Research LabIIS‐Fundacion Jimenez Diaz (IIS‐FJD)MadridSpain
- Universidad Autonoma de Madrid (UAM)MadridSpain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM)MadridSpain
| | - Luna Jimenez‐Castilla
- Renal, Vascular and Diabetes Research LabIIS‐Fundacion Jimenez Diaz (IIS‐FJD)MadridSpain
- Universidad Autonoma de Madrid (UAM)MadridSpain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM)MadridSpain
| | - Ignacio Prieto
- Renal, Vascular and Diabetes Research LabIIS‐Fundacion Jimenez Diaz (IIS‐FJD)MadridSpain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM)MadridSpain
| | - Sara La Manna
- Renal, Vascular and Diabetes Research LabIIS‐Fundacion Jimenez Diaz (IIS‐FJD)MadridSpain
- Universidad Autonoma de Madrid (UAM)MadridSpain
| | | | - Luis Miguel Blanco‐Colio
- Renal, Vascular and Diabetes Research LabIIS‐Fundacion Jimenez Diaz (IIS‐FJD)MadridSpain
- Spanish Biomedical Research Centre in Cardiovascular Diseases (CIBERCV)MadridSpain
| | - Jesus Egido
- Renal, Vascular and Diabetes Research LabIIS‐Fundacion Jimenez Diaz (IIS‐FJD)MadridSpain
- Universidad Autonoma de Madrid (UAM)MadridSpain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM)MadridSpain
| | - Jose Luis Martin‐Ventura
- Renal, Vascular and Diabetes Research LabIIS‐Fundacion Jimenez Diaz (IIS‐FJD)MadridSpain
- Universidad Autonoma de Madrid (UAM)MadridSpain
- Spanish Biomedical Research Centre in Cardiovascular Diseases (CIBERCV)MadridSpain
| | - Carmen Gomez‐Guerrero
- Renal, Vascular and Diabetes Research LabIIS‐Fundacion Jimenez Diaz (IIS‐FJD)MadridSpain
- Universidad Autonoma de Madrid (UAM)MadridSpain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM)MadridSpain
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23
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Aberrant Mitochondrial Dynamics: An Emerging Pathogenic Driver of Abdominal Aortic Aneurysm. Cardiovasc Ther 2021; 2021:6615400. [PMID: 34221126 PMCID: PMC8221877 DOI: 10.1155/2021/6615400] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 05/13/2021] [Accepted: 06/02/2021] [Indexed: 12/12/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is defined as a progressive segmental dilation of the abdominal aorta and is associated with high mortality. The characterized features of AAA indicate several underlying mechanisms of AAA formation and progression, including reactive oxygen species production, inflammation, and atherosclerosis. Mitochondrial functions are critical for determining cell fate, and mitochondrial dynamics, especially selective mitochondrial autophagy, which is termed as mitophagy, has emerged as an important player in the pathogenesis of several cardiovascular diseases. The PARKIN/PARIS/PGC1α pathway is associated with AAA formation and has been proposed to play a role in mitochondrial dynamics mediated by the PINK/PARKIN pathway in the pathogenesis underlying AAA. This review is aimed at deepening our understanding of AAA formation and progression, which is vital for the development of potential medical therapies for AAA.
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24
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Sánchez-Infantes D, Nus M, Navas-Madroñal M, Fité J, Pérez B, Barros-Membrilla AJ, Soto B, Martínez-González J, Camacho M, Rodriguez C, Mallat Z, Galán M. Oxidative Stress and Inflammatory Markers in Abdominal Aortic Aneurysm. Antioxidants (Basel) 2021; 10:602. [PMID: 33919749 PMCID: PMC8070751 DOI: 10.3390/antiox10040602] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/08/2021] [Accepted: 04/12/2021] [Indexed: 12/18/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is increasing due to aging of the population and is a major cause of death among the elderly. Ultrasound screening programs are useful in early diagnosis, but aneurysm size is not always a good predictor of rupture. Our aim was to analyze the value of circulating molecules related to oxidative stress and inflammation as new biomarkers to assist the management of AAA. The markers were quantified by ELISA, and their expression in the aneurysmal wall was studied by real-time PCR and by immunostaining. Correlation analysis of the studied markers with aneurysm diameter and peak wall stress (PWS), obtained by finite element analysis, and multivariate regression analysis to assess potential confounding factors were performed. Our study shows an extensive inflammatory infiltration in the aneurysmal wall, mainly composed by T-cells, macrophages and B-cells and altered levels of reactive oxygen species (ROS), IgM, IgG, CD38, GDF15, S100A4 and CD36 in plasma and in the aneurysmal tissue of AAA patients compared with controls. Circulating levels of IgG, CD38 and GDF15 positively correlated with abdominal aortic diameter, and CD38 was correlated with PWS. Our data show that altered levels of IgG, CD38 and GDF15 have potential diagnostic value in the assessment of AAA.
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Affiliation(s)
- David Sánchez-Infantes
- Department of Basic Sciences of Health, Area of Biochemistry and Molecular Biology, University Rey Juan Carlos, 28922 Alcorcón, Spain;
- Centro de Investigación Biomédica en Red-Fisiopatología de la Obesidad y Nutrición (CIBEROBN), ISCIII, 28029 Madrid, Spain
| | - Meritxell Nus
- Division of Cardiovascular Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; (M.N.); (Z.M.)
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), ISCIII, 28029 Madrid, Spain; (J.M.-G.); (M.C.); (C.R.)
| | - Miquel Navas-Madroñal
- Institut de Recerca del Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain;
- Instituto de Investigación Biomédica Sant Pau (IB Sant Pau), 08025 Barcelona, Spain
| | - Joan Fité
- Servicio de Angiología, Cirugía Vascular y Endovascular, Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain; (J.F.); (B.S.)
| | - Belén Pérez
- Faculty of Medicine, Universidad Autónoma de Barcelona, Bellaterra, 08193 Barcelona, Spain;
| | - Antonio J. Barros-Membrilla
- Unidad Funcional de Patología de la Aorta (UPA), Servicio de Cardiología, Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain;
| | - Begoña Soto
- Servicio de Angiología, Cirugía Vascular y Endovascular, Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain; (J.F.); (B.S.)
| | - José Martínez-González
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), ISCIII, 28029 Madrid, Spain; (J.M.-G.); (M.C.); (C.R.)
- Instituto de Investigación Biomédica Sant Pau (IB Sant Pau), 08025 Barcelona, Spain
- Instituto de Investigaciones Biomédicas de Barcelona-Consejo Superior de Investigaciones Científicas (IIBB-CSIC), 08036 Barcelona, Spain
| | - Mercedes Camacho
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), ISCIII, 28029 Madrid, Spain; (J.M.-G.); (M.C.); (C.R.)
- Institut de Recerca del Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain;
- Instituto de Investigación Biomédica Sant Pau (IB Sant Pau), 08025 Barcelona, Spain
| | - Cristina Rodriguez
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), ISCIII, 28029 Madrid, Spain; (J.M.-G.); (M.C.); (C.R.)
- Institut de Recerca del Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain;
- Instituto de Investigación Biomédica Sant Pau (IB Sant Pau), 08025 Barcelona, Spain
| | - Ziad Mallat
- Division of Cardiovascular Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; (M.N.); (Z.M.)
| | - María Galán
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), ISCIII, 28029 Madrid, Spain; (J.M.-G.); (M.C.); (C.R.)
- Institut de Recerca del Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain;
- Instituto de Investigación Biomédica Sant Pau (IB Sant Pau), 08025 Barcelona, Spain
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25
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Rolipram Prevents the Formation of Abdominal Aortic Aneurysm (AAA) in Mice: PDE4B as a Target in AAA. Antioxidants (Basel) 2021; 10:antiox10030460. [PMID: 33809405 PMCID: PMC8000788 DOI: 10.3390/antiox10030460] [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: 02/18/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 12/25/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is a common life-threatening condition characterized by exacerbated inflammation and the generation of reactive oxygen species. Pharmacological treatments to slow AAA progression or to prevent its rupture remain a challenge. Targeting phosphodiesterase 4 (PDE4) has been verified as an effective therapeutic strategy for an array of inflammatory conditions; however, no studies have assessed yet PDE4 in AAA. Here, we used angiotensin II (AngII)-infused apolipoprotein E deficient mice to study the involvement of the PDE4 subfamily in aneurysmal disease. PDE4B but not PDE4D was upregulated in inflammatory cells from both experimental and human AAA. The administration of the PDE4 selective inhibitor rolipram (3 mg/kg/day) to AngII-challenged mice (1000 ng/kg bodyweight/min) protected against AAA formation, limiting the progressive increase in the aortic diameter without affecting the blood pressure. The drug strongly attenuated the rise in vascular oxidative stress (superoxide anion) induced by AngII, and decreased the expression of inflammatory markers, as well as the recruitment of macrophages (MAC3+), lymphocytes (CD3+), and neutrophils (ELANE+) into the vessel wall. Rolipram also normalized the vascular MMP2 expression and MMP activity, preserving the elastin integrity and improving the vascular remodelling. These results point to PDE4B as a new therapeutic target for AAA.
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26
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Yuan Z, Lu Y, Wei J, Wu J, Yang J, Cai Z. Abdominal Aortic Aneurysm: Roles of Inflammatory Cells. Front Immunol 2021; 11:609161. [PMID: 33613530 PMCID: PMC7886696 DOI: 10.3389/fimmu.2020.609161] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 12/18/2020] [Indexed: 12/14/2022] Open
Abstract
Abdominal aortic aneurysms (AAAs) are local dilations of infrarenal segment of aortas. Molecular mechanisms underlying the pathogenesis of AAA remain not fully clear. However, inflammation has been considered as a central player in the development of AAA. In the past few decades, studies demonstrated a host of inflammatory cells, including T cells, macrophages, dendritic cells, neutrophils, B cells, and mast cells, etc. infiltrating into aortic walls, which implicated their crucial roles. In addition to direct cell contacts and cytokine or protease secretions, special structures like inflammasomes and neutrophil extracellular traps have been investigated to explore their functions in aneurysm formation. The above-mentioned inflammatory cells and associated structures may initiate and promote AAA expansion. Understanding their impacts and interaction networks formation is meaningful to develop new strategies of screening and pharmacological interventions for AAA. In this review, we aim to discuss the roles and mechanisms of these inflammatory cells in AAA pathogenesis.
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Affiliation(s)
- Zhen Yuan
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yi Lu
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jia Wei
- Department of Urology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiaqi Wu
- Translational Medicine Center, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - Jin Yang
- Translational Medicine Center, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China.,Institute of Hepatology and Metabolic Diseases, Hangzhou Normal University, Hangzhou, China
| | - Zhejun Cai
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Jiaxing Key Laboratory of Cardiac Rehabilitation, Jiaxing, China
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27
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Ye T, Zhang G, Liu H, Shi J, Qiu H, Liu Y, Han F, Hou N. Relationships Between Perivascular Adipose Tissue and Abdominal Aortic Aneurysms. Front Endocrinol (Lausanne) 2021; 12:704845. [PMID: 34194399 PMCID: PMC8236981 DOI: 10.3389/fendo.2021.704845] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 05/25/2021] [Indexed: 02/05/2023] Open
Abstract
Abdominal aortic aneurysms (AAAs) are typically asymptomatic, and there is a high mortality rate associated with aneurysm rupture. AAA pathogenesis involves extracellular matrix degradation, vascular smooth muscle cell phenotype switching, inflammation, and oxidative stress. There is increasing evidence of excessive adipocyte accumulation in ruptured AAA walls. These excessive numbers of adipocytes in the vascular wall have been closely linked with AAA progression. Perivascular adipose tissue (PVAT), a unique type of adipose tissue, can be involved in adipocyte accumulation in the AAA wall. PVAT produces various chemokines and adipocytokines around vessels to maintain vascular homeostasis through paracrine and autocrine mechanisms in normal physiological conditions. Nevertheless, PVAT loses its normal function and promotes the progression of vascular diseases in pathological conditions. There is evidence of significantly reduced AAA diameter in vessel walls of removed PVAT. There is a need to highlight the critical roles of cytokines, cells, and microRNA derived from PVAT in the regulation of AAA development. PVAT may constitute an important therapeutic target for the prevention and treatment of AAAs. In this review, we discuss the relationship between PVAT and AAA development; we also highlight the potential for PVAT-derived factors to serve as a therapeutic target in the treatment of AAAs.
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Affiliation(s)
- Tongtong Ye
- Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Guangdong Zhang
- Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Hangyu Liu
- Department of Ophthalmology, Weifang Eye Hospital, Weifang, China
| | - Junfeng Shi
- Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Hongyan Qiu
- Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Yongping Liu
- Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Fang Han
- Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China
- *Correspondence: Ningning Hou, ; Fang Han,
| | - Ningning Hou
- Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China
- *Correspondence: Ningning Hou, ; Fang Han,
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Chen S, Yang D, Liu B, Chen Y, Ye W, Chen M, Zheng Y. Identification of crucial genes mediating abdominal aortic aneurysm pathogenesis based on gene expression profiling of perivascular adipose tissue by WGCNA. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:52. [PMID: 33553345 PMCID: PMC7859787 DOI: 10.21037/atm-20-3758] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Background With a mortality rate of 65–85%, a ruptured abdominal aortic aneurysm (AAA) can have catastrophic consequences for patients. However, few effective pharmaceutical treatments are available to treat this condition. Therefore, elucidating the pathogenesis of AAA and finding the potential molecular targets for medical therapies are vital lines of research. Methods An mRNA microarray dataset of perivascular adipose tissue (PVAT) in AAA patients was downloaded and differentially expressed gene (DEG) screening was performed. Weighted gene co-expression networks for dilated and non-dilated PVAT samples were constructed via weighted correlation network analysis (WGCNA) and used to detect gene modules. Functional annotation analysis was performed for the DEGs and gene modules. We identified the hub genes of the modules and created a DEG co-expression network. We then mined crucial genes based on this network using Molecular Complex Detection (MCODE) in Cytoscape. Crucial genes with top-6 degree in the crucial gene cluster were visualized, and their potential clinical significance was determined. Results Of the 173 DEGs screened, 99 were upregulated and 74 were downregulated. Co-expression networks were built and we detected 6 and 5 modules for dilated and non-dilated PVAT samples, respectively. The turquoise and black modules for dilated PVAT samples were related to inflammation and immune response. MAP4K1 and PROK2 were the hub genes of these 2 modules, respectively. Then a DEG co-expression network with 112 nodes and 953 edges was created. PLAU was the crucial gene with the highest connectivity and showed potential clinical significance. Conclusions Using WGCNA, gene modules were detected and hub genes and crucial genes were identified. These crucial genes might be potential targets for pharmaceutic therapies and have potential clinical significance. Future in vitro and in vivo experiments are required to more comprehensively explore the biological mechanisms by which these genes affect AAA pathogenesis
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Affiliation(s)
- Siliang Chen
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dan Yang
- Department of Computational Biology and Bioinformatics, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bao Liu
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuexin Chen
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - We Ye
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Mengyin Chen
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuehong Zheng
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Patterns of immune infiltration in stable and raptured abdominal aortic aneurysms: A gene-expression-based retrospective study. Gene 2020; 762:145056. [PMID: 32805313 DOI: 10.1016/j.gene.2020.145056] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 07/24/2020] [Accepted: 08/12/2020] [Indexed: 01/22/2023]
Abstract
BACKGROUND Abdominal aortic aneurysm (AAA) is a disease characterized by weakening arterial wall and permanent expansion with high mortality once rupture, which was involved with immune system activation. However, owing to technical difficulties, previous research has limited the impact of one or limited immune cells on AAA. METHODS We analyzed the composition of immune cells using the CIBERSORT algorithm through transcriptome sequencing data from patients with stable (eAAA) and ruptured aneurysms (rAAA). The whole transcriptome sequencing data, including 17 patients with ruptured AAA and 31 patients with stable AAA were downloaded from Gene Expression Omnibus (GEO, GSE98278). After normalizing and data processing, five rAAA and seventeen eAAA patients entered the follow-up analysis. We performed Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis to identify several pathways that were significantly enriched in rAAA compared to eAAA tissues. RESULTS We demonstrated that the compositions of infiltrative immune cell in eAAA and rAAA were different. Naïve B cells, both resting and activated CD4+ memory T cells were found significantly higher in ruptured AAA, while memory B cells and activated mast cells were much less in ruptured AAA than that in stable AAA. Besides, PTX3 was significantly highly expressed in rAAA, which might be associated with the complement system and polarization of macrophages. Finally, differentially expressed genes and the related immune cells were mapped in a network to reveal the relationship between gene expression and infiltrative immune cells. CONCLUSION We identified the infiltrated immune cell profile of eAAA and rAAA patients, which might be the potential target of AAA treatment.
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Kanamoto R, Aoki H, Furusho A, Otsuka H, Shintani Y, Tobinaga S, Hiromatsu S, Fukumoto Y, Tanaka H. The Role of Syk in Inflammatory Response of Human Abdominal Aortic Aneurysm Tissue. Ann Vasc Dis 2020; 13:151-157. [PMID: 32595791 PMCID: PMC7315237 DOI: 10.3400/avd.oa.20-00009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Objective: Inflammatory response is central to pathogenesis of abdominal aortic aneurysm (AAA). Recently, we reported that Syk, a signaling molecule in inflammatory cells, promotes AAA development in a mouse model. In this study, we aimed to investigate the role of Syk in human AAA pathogenesis. Materials and Methods: We obtained human AAA wall samples during open surgical aortic repair at Kurume University Hospital. Immunohistochemical analyses of AAA samples were performed for Syk activation and cell type markers. Ex vivo culture of human AAA tissue was utilized to evaluate the effect of P505-15, a Syk inhibitor, on secretions of interleukin-6 (IL-6) and matrix metalloproteinases (MMPs). Results: Immunohistochemical analysis showed infiltration of B cells, T cells, and macrophages in AAA samples. Syk activation was localized mainly in B cells and part of macrophages. AAA tissue in culture secreted IL-6, MMP-9, and MMP-2 without any stimulation. The unstimulated secretions of IL-6, MMP-9, and MMP-2 were insensitive to P505-15. Secretions of IL-6 and MMP-9 were enhanced by exogenous normal human immunoglobulin G (IgG), which was suppressed by P505-15, whereas secretion of MMP-2 was insensitive to IgG or P505-15. Conclusion: These results demonstrate an important role of Syk for IgG-dependent inflammatory response in human AAA.
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Affiliation(s)
- Ryo Kanamoto
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Hiroki Aoki
- Cardiovascular Research Institute, Kurume University, Kurume, Fukuoka, Japan
| | - Aya Furusho
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Hiroyuki Otsuka
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Yusuke Shintani
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Satoru Tobinaga
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Shinichi Hiromatsu
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Yoshihiro Fukumoto
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Hiroyuki Tanaka
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine, Kurume, Fukuoka, Japan
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Li G, Zhou H, He Y, Sun S, Wu X, Yuan H. Ulinastatin Inhibits the Formation and Progression of Experimental Abdominal Aortic Aneurysms. J Vasc Res 2020; 57:58-64. [PMID: 31962313 DOI: 10.1159/000504848] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 11/18/2019] [Indexed: 11/19/2022] Open
Abstract
AIMS Aortic mural inflammatory damage takes a vital part in abdominal aortic aneurysm (AAA). Recently, ulinastatin (UTI) has attracted attention for its anti-inflammatory function. Our study aimed to evaluate potential influences of UTI on experimental AAA. METHODS A mouse model of AAA was induced by infusion of porcine pancreatic elastase (PPE) into the abdominal aorta. Mice were treated with UTI (50,000 U/kg/day i.p.) beginning either immediately or on the 4th day after PPE infusion, with treatment being continued until the 14th day. UTI effects were assessed by aortic diameter measurements and aortic histopathological analysis. RESULTS Significant and time-dependent aortic diameter enlargement persisted in the control mice from day 0. In the UTI group, aortic diameter increased, and depletion of aortic mural smooth muscle cells and elastin was significantly -attenuated. Simultaneously, mural CD68+ macrophages, CD8+ T-cell and B220+ B-cell density, as well as neoangiogenesis were suppressed by UTI. In addition, delayed UTI treatment could still effectively limit aneurysm expansion. CONCLUSIONS UTI treatment limits the formation and growth of experimental AAA, and UTI may be a potential treatment for early AAA disease.
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Affiliation(s)
- Gang Li
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Hua Zhou
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Yuxiang He
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Shunji Sun
- Vascular Intervention Department, Hospital Affiliated to Weifang Medical University, Weifang, China
| | - Xuejun Wu
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Hai Yuan
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China,
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Depletion of CD11c+ cell attenuates progression of abdominal aortic aneurysm. Clin Sci (Lond) 2020; 134:33-37. [PMID: 31898748 DOI: 10.1042/cs20191083] [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: 12/11/2019] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 11/17/2022]
Abstract
Chronic inflammation of the arterial wall has been implicated in the development of abdominal aortic aneurysm (AAA). However, the detailed molecular mechanism(s) by which inflammatory cells contributes to AAA pathogenesis remains largely unclear. In their article in Clinical Science, Krishna et al. have reported that depletion of CD11c+ dendritic cells inhibited experimental AAA formation in mice. The authors also demonstrated a decrease in CD4 and CD8 positive T cells in the circulation, lower plasma neutrophil elastase activity, and aortic matrix remodeling. These novel findings will help clarify the underlying mechanisms of AAA progression and may provide a new target for future therapeutic research in AAA formation.
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Chen S, Yang D, Lei C, Li Y, Sun X, Chen M, Wu X, Zheng Y. Identification of crucial genes in abdominal aortic aneurysm by WGCNA. PeerJ 2019; 7:e7873. [PMID: 31608184 PMCID: PMC6788446 DOI: 10.7717/peerj.7873] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 09/11/2019] [Indexed: 02/06/2023] Open
Abstract
Background Abdominal aortic aneurysm (AAA) is the full thickness dilation of the abdominal aorta. However, few effective medical therapies are available. Thus, elucidating the molecular mechanism of AAA pathogenesis and exploring the potential molecular target of medical therapies for AAA is of vital importance. Methods Three expression datasets (GSE7084, GSE47472 and GSE57691) were downloaded from the Gene Expression Omnibus (GEO). These datasets were merged and then normalized using the “sva” R package. Differential expressed gene (DEG) analysis and weighted gene co-expression network analysis (WGCNA) were conducted. We compared the co-expression patterns between AAA and normal conditions, and hub genes of each functional module were identified. DEGs were mapped to co-expression network under AAA condition and a DEG co-expression network was generated. Crucial genes were identified using molecular complex detection (MCODE) (a plugin in Cytoscape). Results In our study, 6 and 10 gene modules were detected for the AAA and normal conditions, respectively, while 143 DEGs were screened. Compared to the normal condition, genes associated with immune response, inflammation and muscle contraction were clustered in three gene modules respectively under the AAA condition; the hub genes of the three modules were MAP4K1, NFIB and HPK1, respectively. A DEG co-expression network with 102 nodes and 303 edges was identified, and a hub gene cluster with 10 genes from the DEG co-expression network was detected. YIPF6, RABGAP1, ANKRD6, GPD1L, PGRMC2, HIGD1A, GMDS, MGP, SLC25A4 and FAM129A were in the cluster. The expression levels of these 10 genes showed potential diagnostic value. Conclusion Based on WGCNA, we detected 6 modules under the AAA condition and 10 modules in the normal condition. Hub genes of each module and hub gene clusters of the DEG co-expression network were identified. These genes may act as potential targets for medical therapy and diagnostic biomarkers. Further studies are needed to elucidate the detailed biological function of these genes in the pathogenesis of AAA.
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Affiliation(s)
- Siliang Chen
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China
| | - Dan Yang
- Department of Computational Biology and Bioinformatics, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China
| | - Chuxiang Lei
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China
| | - Yuan Li
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China
| | - Xiaoning Sun
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China
| | - Mengyin Chen
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China
| | - Xiao Wu
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China
| | - Yuehong Zheng
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China
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Porsch F, Binder CJ. Impact of B-Cell–Targeted Therapies on Cardiovascular Disease. Arterioscler Thromb Vasc Biol 2019; 39:1705-1714. [DOI: 10.1161/atvbaha.119.311996] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Atherosclerosis is a lipid-driven chronic inflammatory disease that is modulated by many immune cell subsets, including B cells. Therefore, targeting the inflammatory component of cardiovascular disease represents a promising therapeutic strategy. In the past years, immunotherapy has revolutionized the treatment of autoimmunity and cancer. Many of these clinically used strategies target B cells. Given the multifaceted role of B cells in atherogenesis, it is conceivable that B-cell–directed therapies can modulate disease development. Here, we review clinically available B-cell–targeted therapies and the possible benefits or detrimental effects on cardiovascular disease.
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Affiliation(s)
- Florentina Porsch
- From the Department for Laboratory Medicine, Medical University of Vienna, Austria (F.P., C.J.B.)
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria (F.P., C.J.B.)
| | - Christoph J. Binder
- From the Department for Laboratory Medicine, Medical University of Vienna, Austria (F.P., C.J.B.)
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria (F.P., C.J.B.)
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Matrix Metalloproteinase in Abdominal Aortic Aneurysm and Aortic Dissection. Pharmaceuticals (Basel) 2019; 12:ph12030118. [PMID: 31390798 PMCID: PMC6789891 DOI: 10.3390/ph12030118] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/25/2019] [Accepted: 08/02/2019] [Indexed: 12/12/2022] Open
Abstract
Abdominal Aortic Aneurysm (AAA) affects 4–5% of men over 65, and Aortic Dissection (AD) is a life-threatening aortic pathology associated with high morbidity and mortality. Initiators of AAA and AD include smoking and arterial hypertension, whilst key pathophysiological features of AAA and AD include chronic inflammation, hypoxia, and large modifications to the extra cellular matrix (ECM). As it stands, only surgical methods are available for preventing aortic rupture in patients, which often presents difficulties for recovery. No pharmacological treatment is available, as such researchers are attempting to understand the cellular and molecular pathophysiology of AAA and AD. Upregulation of matrix metalloproteinase (MMPs), particularly MMP-2 and MMP-9, has been identified as a key event occurring during aneurysmal growth. As such, several animal models of AAA and AD have been used to investigate the therapeutic potential of suppressing MMP-2 and MMP-9 activity as well as modulating the activity of other MMPs, and TIMPs involved in the pathology. Whilst several studies have offered promising results, targeted delivery of MMP inhibition still needs to be developed in order to avoid surgery in high risk patients.
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Martin-Ventura JL, Martinez-Lopez D, Roldan-Montero R, Gomez-Guerrero C, Blanco-Colio LM. Role of complement system in pathological remodeling of the vascular wall. Mol Immunol 2019; 114:207-215. [PMID: 31377677 DOI: 10.1016/j.molimm.2019.06.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/24/2019] [Accepted: 06/24/2019] [Indexed: 11/28/2022]
Abstract
Cardiovascular diseases (CVD) remain the major cause of morbidity and mortality in Europe. The clinical complications associated to arterial wall rupture involve intimal cap rupture in complicated atherosclerotic plaques and medial rupture in abdominal aortic aneurysm (AAA). The mechanisms underlying pathological vascular remodeling include lipid accumulation, cell proliferation, redox imbalance, proteolysis, leukocyte infiltration, cell death, and eventually, thrombosis. The complement system could participate in vascular remodeling by several mechanisms, from an initial protective response that aims in the clearing of cell debris to a potential deleterious role participating in leukocyte chemotaxis and cell activation and bridging innate and adaptive immunity. We have reviewed the presence and distribution of complement components, as well as the triggers of complement activation in atherosclerotic plaques and AAA, to later assess the functional consequences of complement modulation in experimental models of pathological vascular remodeling and the potential role of complement components as potential circulating biomarkers of CVD. On the whole, complement system is a key mechanism involved in vascular remodelling, which could be useful in the diagnostic/prognostic setting, as well as a potential therapeutic target, of CVD.
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Affiliation(s)
- Jose Luis Martin-Ventura
- Vascular Research Lab, IIS-Fundación Jiménez Díaz, Universidad Autonoma de Madrid, and CIBERCV, Spain.
| | - Diego Martinez-Lopez
- Vascular Research Lab, IIS-Fundación Jiménez Díaz, Universidad Autonoma de Madrid, and CIBERCV, Spain
| | - Raquel Roldan-Montero
- Vascular Research Lab, IIS-Fundación Jiménez Díaz, Universidad Autonoma de Madrid, and CIBERCV, Spain
| | - Carmen Gomez-Guerrero
- Vascular Research Lab, IIS-Fundación Jiménez Díaz, Universidad Autonoma de Madrid, and CIBERDEM, Madrid, Spain
| | - Luis Miguel Blanco-Colio
- Vascular Research Lab, IIS-Fundación Jiménez Díaz, Universidad Autonoma de Madrid, and CIBERCV, Spain
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Gao Y, Wang Z, Zhao J, Sun W, Guo J, Yang Z, Tu Y, Yu C, Pan L, Zheng J. Involvement of B cells in the pathophysiology of β-aminopropionitrile-induced thoracic aortic dissection in mice. Exp Anim 2019; 68:331-339. [PMID: 30930402 PMCID: PMC6699969 DOI: 10.1538/expanim.18-0170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Thoracic aortic dissection (TAD) is a life-threatening disease that is characterized by
an inflammatory response. Innate and cellular immunity has long been known to be involved
in TAD, but the role of humoral immunity in the pathophysiology of TAD remains unknown. We
administered the lysyl oxidase inhibitor β-aminopropionitrile (BAPN; 1 g/kg/day) in
3-week-old male C57BL/6J mice for 4 weeks to establish an animal model of TAD. Animals
that died were immediately dissected. Animals that survived were sacrificed on days 7, 14,
and 28 after BAPN challenge. The incidence and rupture rates of BAPN-induced TAD were 90%
(9/10) and 70% (7/10), respectively, at 28 days. Victoria blue-nuclear fast red staining
of aortic tissue revealed elastic lamellae destruction and the formation of a false lumen
in the BAPN group. Hematoxylin-eosin staining revealed the infiltration of both
plasmacytoid mononuclear cells and polymorphonuclear inflammatory cells in TAD tissues.
Enzyme-linked immunosorbent assay and immunohistochemistry indicated that plasma
immunoglobin M (IgM) and IgG were elevated at 7, 14, and 28 days, and CD19-positive B
cells infiltrated into the adventitia of aortic tissue in BAPN-treated mice. The
transcriptional analysis showed an increase in the expression of B cell receptor
signaling-associated genes. These results indicate that B cells and immunoglobulins might
participate in the pathogenesis of TAD, suggesting that humoral immunity may be a possible
therapeutic target for TAD.
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Affiliation(s)
- Yanxiang Gao
- Department of Cardiology, China-Japan Friendship Hospital, 2 Yinghua Dongjie, Chaoyang District, Beijing 100029, China
| | - Zhizhi Wang
- Department of Cardiology, China-Japan Friendship School of Clinical Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100029, China
| | - Jianqiao Zhao
- Department of Cardiology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, 100029, China
| | - Weiliang Sun
- Biomedical Experimental Research, Institute of Clinical Medicine, China-Japan Friendship Hospital, 2 Yinghua Dongjie, Chaoyang District, Beijing 100029, China
| | - Jing Guo
- Biomedical Experimental Research, Institute of Clinical Medicine, China-Japan Friendship Hospital, 2 Yinghua Dongjie, Chaoyang District, Beijing 100029, China
| | - Zufang Yang
- Department of Cardiology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, 100029, China
| | - Yimin Tu
- Department of Cardiology, China-Japan Friendship School of Clinical Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100029, China
| | - Changan Yu
- Central Laboratory of Cardiovascular Disease, China-Japan Friendship Hospital, 2 Yinghua Dongjie, Chaoyang District, Beijing 100029, China
| | - Lin Pan
- Biomedical Experimental Research, Institute of Clinical Medicine, China-Japan Friendship Hospital, 2 Yinghua Dongjie, Chaoyang District, Beijing 100029, China
| | - Jingang Zheng
- Department of Cardiology, China-Japan Friendship Hospital, 2 Yinghua Dongjie, Chaoyang District, Beijing 100029, China.,Department of Cardiology, China-Japan Friendship School of Clinical Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100029, China.,Department of Cardiology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, 100029, China
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Furusho A, Aoki H, Ohno-Urabe S, Nishihara M, Hirakata S, Nishida N, Ito S, Hayashi M, Imaizumi T, Hiromatsu S, Akashi H, Tanaka H, Fukumoto Y. Involvement of B Cells, Immunoglobulins, and Syk in the Pathogenesis of Abdominal Aortic Aneurysm. J Am Heart Assoc 2018; 7:JAHA.117.007750. [PMID: 29545260 PMCID: PMC5907549 DOI: 10.1161/jaha.117.007750] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background Abdominal aortic aneurysm (AAA) is a potentially life‐threatening disease that is common in older individuals. Currently, therapeutic options are limited to surgical interventions. Although it has long been known that AAA tissue is enriched in B cells and immunoglobulins, their involvement in AAA pathogenesis remains controversial. Methods and Results We investigated the role of B cells and immunoglobulins in a murine model of AAA, induced with a periaortic application of CaCl2, and in human AAA. Both human and mouse AAA tissue showed B‐cell infiltration. Mouse AAA tissue showed deposition of IgG and activation of Syk, a key molecule in B‐cell activation and immunoglobulin function, which were localized to infiltrating cells including B cells and macrophages. B‐cell–deficient muMT mice showed suppression of AAA development that was associated with reduced activation of Syk and less expression of matrix metalloproteinase‐9. Administration of exogenous immunoglobulins restored the blunted Syk activation and AAA development in muMT mice. Additionally, exogenous immunoglobulins induced interleukin‐6 and metalloproteinase‐9 secretions in human AAA tissue cultures. Furthermore, administration of R788, a specific Syk inhibitor, suppressed AAA expansion, reduced inflammatory response, and reduced immunoglobulin deposition in AAA tissue. Conclusions From these results, we concluded that B cells and immunoglobulins participated in AAA pathogenesis by promoting inflammatory and tissue‐destructive activities. Finally, we identified Syk as a potential therapeutic target.
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Affiliation(s)
- Aya Furusho
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Hiroki Aoki
- Cardiovascular Research Institute, Kurume University, Kurume, Japan
| | - Satoko Ohno-Urabe
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Michihide Nishihara
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Saki Hirakata
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Norifumi Nishida
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Sohei Ito
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Makiko Hayashi
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | | | - Shinichi Hiromatsu
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine, Kurume, Japan
| | - Hidetoshi Akashi
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine, Kurume, Japan
| | - Hiroyuki Tanaka
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine, Kurume, Japan
| | - Yoshihiro Fukumoto
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
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