1
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Huang K, Chen S, Yu LJ, Wu ZM, Chen QJ, Wang XQ, Li FF, Liu JM, Wang YX, Mao LS, Shen WF, Zhang RY, Shen Y, Lu L, Dai Y, Ding FH. Serum secreted phosphoprotein 1 level is associated with plaque vulnerability in patients with coronary artery disease. Front Immunol 2024; 15:1285813. [PMID: 38426091 PMCID: PMC10902157 DOI: 10.3389/fimmu.2024.1285813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 02/01/2024] [Indexed: 03/02/2024] Open
Abstract
Background Vulnerable plaque was associated with recurrent cardiovascular events. This study was designed to explore predictive biomarkers of vulnerable plaque in patients with coronary artery disease. Methods To reveal the phenotype-associated cell type in the development of vulnerable plaque and to identify hub gene for pathological process, we combined single-cell RNA and bulk RNA sequencing datasets of human atherosclerotic plaques using Single-Cell Identification of Subpopulations with Bulk Sample Phenotype Correlation (Scissor) and Weighted gene co-expression network analysis (WGCNA). We also validated our results in an independent cohort of patients by using intravascular ultrasound during coronary angiography. Results Macrophages were found to be strongly correlated with plaque vulnerability while vascular smooth muscle cell (VSMC), fibrochondrocyte (FC) and intermediate cell state (ICS) clusters were negatively associated with unstable plaque. Weighted gene co-expression network analysis showed that Secreted Phosphoprotein 1 (SPP1) in the turquoise module was highly correlated with both the gene module and the clinical traits. In a total of 593 patients, serum levels of SPP1 were significantly higher in patients with vulnerable plaques than those with stable plaque (113.21 [73.65 - 147.70] ng/ml versus 71.08 [20.64 - 135.68] ng/ml; P < 0.001). Adjusted multivariate regression analysis revealed that serum SPP1 was an independent determinant of the presence of vulnerable plaque. Receiver operating characteristic curve analysis indicated that the area under the curve was 0.737 (95% CI 0.697 - 0.773; P < 0.001) for adding serum SPP1 in predicting of vulnerable plaques. Conclusion Elevated serum SPP1 levels confer an increased risk for plaque vulnerability in patients with coronary artery disease.
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Affiliation(s)
- Ke Huang
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Shuai Chen
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Lin-Jun Yu
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, China
| | - Zhi-Ming Wu
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Qiu-Jing Chen
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Xiao-Qun Wang
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Fei-Fei Li
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Jing-Meng Liu
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Yi-Xuan Wang
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Lin-Shuang Mao
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Wei-Feng Shen
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Rui-Yan Zhang
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Ying Shen
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Lin Lu
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Yang Dai
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Feng-Hua Ding
- Department of Vascular and Cardiology, Rui Jin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
- Shanghai Clinical Research Center for Interventional Medicine, Shanghai, China
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Alves L, Machado V, Botelho J, Mendes JJ, Cabral JMS, da Silva CL, Carvalho MS. Enhanced Proliferative and Osteogenic Potential of Periodontal Ligament Stromal Cells. Biomedicines 2023; 11:biomedicines11051352. [PMID: 37239023 DOI: 10.3390/biomedicines11051352] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/24/2023] [Accepted: 04/27/2023] [Indexed: 05/28/2023] Open
Abstract
Cell-based therapies using periodontal ligament stromal cells (PDLSC) for periodontal regeneration may represent an alternative source for mesenchymal stromal cells (MSC) to MSC derived from bone marrow (MSC(M)) and adipose tissue (MSC(AT)). We aimed to characterize the osteogenic/periodontal potential of PDLSC in comparison to MSC(M) and MSC(AT). PDLSC were obtained from surgically extracted healthy human third molars, while MSC(M) and MSC(AT) were obtained from a previously established cell bank. Flow cytometry, immunocytochemistry, and cell proliferation analyses provided cellular characteristics from each group. Cells from the three groups presented MSC-like morphology, MSC-related marker expression, and multilineage differentiation capacity (adipogenic, chondrogenic, and osteogenic). In this study, PDLSC expressed osteopontin, osteocalcin, and asporin, while MSC(M) and MSC(AT) did not. Of note, only PDLSC expressed CD146, a marker previously applied to identify PDLSC, and presented higher proliferative potential compared to MSC(M) and MSC(AT). Upon osteogenic induction, PDLSC exhibited higher calcium content and enhanced upregulation of osteogenic/periodontal genes compared to MSC(M) and MSC(AT), such as Runx2, Col1A1 and CEMP-1. However, the alkaline phosphatase activity of PDLSC did not increase. Our findings suggest that PDLSC might be a promising cell source for periodontal regeneration, presenting enhanced proliferative and osteogenic potential compared to MSC(M) and MSC(AT).
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Affiliation(s)
- Laura Alves
- Department of Bioengineering and iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Vanessa Machado
- Clinical Research Unit, Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health and Science, 2829-511 Almada, Portugal
- Evidence-Based Hub, Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health and Science, 2829-511 Almada, Portugal
| | - João Botelho
- Clinical Research Unit, Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health and Science, 2829-511 Almada, Portugal
- Evidence-Based Hub, Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health and Science, 2829-511 Almada, Portugal
| | - José João Mendes
- Clinical Research Unit, Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health and Science, 2829-511 Almada, Portugal
- Evidence-Based Hub, Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health and Science, 2829-511 Almada, Portugal
| | - Joaquim M S Cabral
- Department of Bioengineering and iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Cláudia L da Silva
- Department of Bioengineering and iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Marta S Carvalho
- Department of Bioengineering and iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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3
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Isolation of Decidual Macrophages and Hofbauer Cells from Term Placenta-Comparison of the Expression of CD163 and CD80. Int J Mol Sci 2022; 23:ijms23116113. [PMID: 35682791 PMCID: PMC9181726 DOI: 10.3390/ijms23116113] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 12/10/2022] Open
Abstract
(1) Background: Placental immune cells are playing a very important role in a successful placentation and the prevention of pregnancy complications. Macrophages dominate in number and relevance in the maternal and the fetal part of the placenta. The evidence on the polarization state of fetal and maternal macrophages involved in both, healthy and pregnancy-associated diseases, is limited. There is no representative isolation method for the direct comparison of maternal and fetal macrophages so far. (2) Material and Methods: For the isolation of decidual macrophages and Hofbauer cells from term placenta, fresh tissue was mechanically dissected and digested with trypsin and collagenase A. Afterwards cell enrichment was increased by a Percoll gradient. CD68 is represented as pan-macrophage marker, the surface markers CD80 and CD163 were further investigated. (3) Results: The established method revealed a high cell yield and purity of the isolated macrophages and enabled the comparison between decidual macrophages and Hofbauer cells. No significant difference was observed in the percentage of single CD163+ cells in the distinct macrophage populations, by using FACS and immunofluorescence staining. A slight increase of CD80+ cells could be found in the decidual macrophages. Considering the percentage of CD80+CD163− and CD80−CD163+ cells we could not find differences. Interestingly we found an increased number of double positive cells (CD80+CD163+) in the decidual macrophage population in comparison to Hofbauer cells. (4) Conclusion: In this study we demonstrate that our established isolation method enables the investigation of decidual macrophages and Hofbauer cells in the placenta. It represents a promising method for direct cell comparison, enzyme independently, and unaffected by magnetic beads, to understand the functional subsets of placental macrophages and to identify therapeutic targets of pregnancy associated diseases.
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4
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Someya H, Ito M, Nishio Y, Sato T, Harimoto K, Takeuchi M. Osteopontin-induced vascular hyperpermeability through tight junction disruption in diabetic retina. Exp Eye Res 2022; 220:109094. [PMID: 35490836 DOI: 10.1016/j.exer.2022.109094] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/17/2022] [Accepted: 04/25/2022] [Indexed: 11/29/2022]
Abstract
Diabetic retinopathy is a major cause of blindness in developed countries, and is characterized by deterioration of barrier function causing vascular hyperpermeability and retinal edema. Vascular endothelial growth factor (VEGF) is a major mediator of diabetic macular edema. Although anti-VEGF drugs are the first-line treatment for diabetic macular edema, some cases are refractory to anti-VEGF therapy. Osteopontin (OPN) is a phosphoglycoprotein with diverse functions and expressed in various cells and tissues. Elevated OPN level has been implicated in diabetic retinopathy, but whether OPN is involved in hyperpermeability remains unclear. Using streptozotocin-induced diabetic mice (STZ mice) and human retinal endothelial cells (HRECs), we tested the hypothesis that up-regulated OPN causes tight junction disruption, leading to vascular hyperpermeability. The serum and retinal OPN concentrations were elevated in STZ mice compared to controls. Intravitreal injection of anti-OPN neutralizing antibody (anti-OPN Ab) suppressed vascular hyperpermeability and prevented decreases in claudin-5 and ZO-1 gene expression levels in the retina of STZ mice. Immunohistochemical staining of retinal vessels in STZ mice revealed claudin-5 immunoreactivity with punctate distribution and attenuated ZO-1 immunoreactivity, and these changes were prevented by anti-OPN Ab. Intravitreal injection of anti-OPN Ab did not change VEGF gene expression or protein concentration in retina of STZ mice. In an in vitro study, HRECs were exposed to normal glucose or high glucose with or without OPN for 48 h, and barrier function was evaluated by transendothelial electrical resistance and Evans blue permeation. Barrier function deteriorated under high glucose condition, and was further exacerbated by the addition of OPN. Immunofluorescence localization of claudin-5 and ZO-1 demonstrated punctate appearance with discontinuous junction in HRECs exposed to high glucose and OPN. There were no changes in VEGF and VEGF receptor-2 expression levels in HRECs by exposure to OPN. Our results suggest that OPN induces tight junction disruption and vascular hyperpermeability under diabetic conditions. Targeting OPN may be an effective approach to manage diabetic retinopathy.
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Affiliation(s)
- Hideaki Someya
- Department of Ophthalmology, National Defense Medical College, Namiki 3-2, Tokorozawa, Saitama, 359-8513, Japan
| | - Masataka Ito
- Department of Developmental Anatomy and Regenerative Biology, National Defense Medical College, Namiki 3-2, Tokorozawa, Saitama, 359-8513, Japan
| | - Yoshiaki Nishio
- Department of Ophthalmology, National Defense Medical College, Namiki 3-2, Tokorozawa, Saitama, 359-8513, Japan
| | - Tomohito Sato
- Department of Ophthalmology, National Defense Medical College, Namiki 3-2, Tokorozawa, Saitama, 359-8513, Japan
| | - Kozo Harimoto
- Department of Ophthalmology, National Defense Medical College, Namiki 3-2, Tokorozawa, Saitama, 359-8513, Japan
| | - Masaru Takeuchi
- Department of Ophthalmology, National Defense Medical College, Namiki 3-2, Tokorozawa, Saitama, 359-8513, Japan.
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5
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Rodríguez-Esparragón F, Torres-Mata LB, López-Fernández JC, Cappiello L, González-Martín JM, Clavo B, Serna-Gómez JA, Estupiñán-Quintana L, Torres-Ascensión C, Villar J. Clinical relevance of circulating angiogenic cells in patients with ischemic stroke. BMC Cardiovasc Disord 2022; 22:118. [PMID: 35313809 PMCID: PMC8939119 DOI: 10.1186/s12872-021-02421-8] [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: 10/08/2021] [Accepted: 12/12/2021] [Indexed: 11/30/2022] Open
Abstract
Background Endothelial progenitor cells (EPCs) are circulating angiogenic cells with endothelial features associated with risk for stroke. We aimed to delve into their functional characteristics. EPCs were isolated and cultured from Ischemic Stroke (IS) patients and predictors of their variance evaluated. Methods This is a single-center observational study evaluating 187 consecutively hospitalized patients with IS. EPCs were isolated from blood samples. The number of circulating angiogenic cells (CACs), colony-forming units (CFU-ECs) and the emergence of late outgrowths endothelial cells (LOECs) were counted. We collected clinical variables and measured the stromal cell-derived factor 1 alpha (SDF1α) serum levels. We also examined the relative telomere length and the expression of osteogenic gene markers in CACs. Results CACs counts and CFU-ECs colony numbers were positively correlated (rho = 0.41, p < 0.001, n = 187). We found significant differences according to whether thrombolytic treatment was performed in the distribution of CFU-ECs (odds ratio (OR) = 2.5; 95% confidence interval (CI) 1.01–6.35; p = 0.042) and CACs (OR = 4.45; 95% IC 1.2–15.5; p = 0.012). The main determinants of CACs variation were the number of risks factors, thrombolysis treatment, arterial hypertension, LOECs occurrence, and the vascular endothelial growth factor expression, whereas CFU-ECs variations depended on hemoglobin content and the relative reduction in the National Institutes of Health Stroke Scale (NIHSS) criteria. The main predictors of LOECs appearance were thrombolysis and length of hospital stay. Conclusions Our study supports the relevance of patient risk factors and treatments in the analysis of the functional properties of EPCs.
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Affiliation(s)
- Francisco Rodríguez-Esparragón
- Research Unit, Hospital Universitario de Gran Canaria Dr. Negrín, Barranco de La Ballena S/N, 35019, Las Palmas de Gran Canaria, Spain.
| | - Laura B Torres-Mata
- Research Unit, Hospital Universitario de Gran Canaria Dr. Negrín, Barranco de La Ballena S/N, 35019, Las Palmas de Gran Canaria, Spain
| | | | - Laura Cappiello
- Research Unit, Hospital Universitario de Gran Canaria Dr. Negrín, Barranco de La Ballena S/N, 35019, Las Palmas de Gran Canaria, Spain
| | - Jesús M González-Martín
- Research Unit, Hospital Universitario de Gran Canaria Dr. Negrín, Barranco de La Ballena S/N, 35019, Las Palmas de Gran Canaria, Spain
| | - Bernardino Clavo
- Research Unit, Hospital Universitario de Gran Canaria Dr. Negrín, Barranco de La Ballena S/N, 35019, Las Palmas de Gran Canaria, Spain.,Chronic Pain Unit, Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, Spain.,Radiation Oncology Department, Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, Spain.,Universitary Institute for Research in Biomedicine and Health (iUIBS), Molecular and Translational Pharmacology Group, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain.,Spanish Group of Clinical Research in Radiation Oncology (GICOR), 28029, Madrid, Spain.,Research Network On Health Services in Chronic Diseases (REDISSEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Jaime A Serna-Gómez
- Department of Cardiovascular Surgery, Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | - Lidia Estupiñán-Quintana
- Research Unit, Hospital Universitario de Gran Canaria Dr. Negrín, Barranco de La Ballena S/N, 35019, Las Palmas de Gran Canaria, Spain
| | - Cristina Torres-Ascensión
- Research Unit, Hospital Universitario de Gran Canaria Dr. Negrín, Barranco de La Ballena S/N, 35019, Las Palmas de Gran Canaria, Spain
| | - Jesús Villar
- Research Unit, Hospital Universitario de Gran Canaria Dr. Negrín, Barranco de La Ballena S/N, 35019, Las Palmas de Gran Canaria, Spain.,CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Li Ka Shing Knowledge Institute at St Michael's Hospital, Toronto, ON, Canada
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6
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Osteopontin accumulates in basal deposits of human eyes with age-related macular degeneration and may serve as a biomarker of aging. Mod Pathol 2022; 35:165-176. [PMID: 34389792 PMCID: PMC8786662 DOI: 10.1038/s41379-021-00887-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/13/2021] [Accepted: 07/14/2021] [Indexed: 11/24/2022]
Abstract
A common clinical phenotype of several neurodegenerative and systemic disorders including Alzheimer's disease and atherosclerosis is the abnormal accumulation of extracellular material, which interferes with routine cellular functions. Similarly, patients with age-related macular degeneration (AMD), the leading cause of vision loss among the aged population, present with extracellular lipid- and protein-filled basal deposits in the back of the eye. While the exact mechanism of growth and formation of these deposits is poorly understood, much has been learned from investigating their composition, providing critical insights into AMD pathogenesis, prevention, and therapeutics. We identified human osteopontin (OPN), a phosphoprotein expressed in a variety of tissues in the body, as a newly discovered component of basal deposits in AMD patients, with a distinctive punctate staining pattern. OPN expression within these lesions, which are associated with AMD disease progression, were found to co-localize with abnormal calcium deposition. Additionally, OPN puncta colocalized with an AMD risk-associated complement pathway protein, but not with apolipoprotein E or vitronectin, two other well-established basal deposit components. Mechanistically, we found that retinal pigment epithelial cells, cells vulnerable in AMD, will secrete OPN into the extracellular space, under oxidative stress conditions, supporting OPN biosynthesis locally within the outer retina. Finally, we report that OPN levels in plasma of aged (non-AMD) human donors were significantly higher than levels in young (non-AMD) donors, but were not significantly different from donors with the different clinical subtypes of AMD. Collectively, our study defines the expression pattern of OPN in the posterior pole as a function of disease, and its local expression as a potential histopathologic biomarker of AMD.
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7
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Thomas JR, Naidu P, Appios A, McGovern N. The Ontogeny and Function of Placental Macrophages. Front Immunol 2021; 12:771054. [PMID: 34745147 PMCID: PMC8566952 DOI: 10.3389/fimmu.2021.771054] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 10/05/2021] [Indexed: 01/02/2023] Open
Abstract
The placenta is a fetal-derived organ whose function is crucial for both maternal and fetal health. The human placenta contains a population of fetal macrophages termed Hofbauer cells. These macrophages play diverse roles, aiding in placental development, function and defence. The outer layer of the human placenta is formed by syncytiotrophoblast cells, that fuse to form the syncytium. Adhered to the syncytium at sites of damage, on the maternal side of the placenta, is a population of macrophages termed placenta associated maternal macrophages (PAMM1a). Here we discuss recent developments that have led to renewed insight into our understanding of the ontogeny, phenotype and function of placental macrophages. Finally, we discuss how the application of new technologies within placental research are helping us to further understand these cells.
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Affiliation(s)
| | | | | | - Naomi McGovern
- Department of Pathology and Centre for Trophoblast Research, University of Cambridge, Cambridge, United Kingdom
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8
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Thomas JR, Appios A, Zhao X, Dutkiewicz R, Donde M, Lee CYC, Naidu P, Lee C, Cerveira J, Liu B, Ginhoux F, Burton G, Hamilton RS, Moffett A, Sharkey A, McGovern N. Phenotypic and functional characterization of first-trimester human placental macrophages, Hofbauer cells. J Exp Med 2021; 218:211477. [PMID: 33075123 PMCID: PMC7579740 DOI: 10.1084/jem.20200891] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 07/30/2020] [Accepted: 09/11/2020] [Indexed: 12/31/2022] Open
Abstract
Hofbauer cells (HBCs) are a population of macrophages found in high abundance within the stroma of the first-trimester human placenta. HBCs are the only fetal immune cell population within the stroma of healthy placenta. However, the functional properties of these cells are poorly described. Aligning with their predicted origin via primitive hematopoiesis, we find that HBCs are transcriptionally similar to yolk sac macrophages. Phenotypically, HBCs can be identified as HLA-DR-FOLR2+ macrophages. We identify a number of factors that HBCs secrete (including OPN and MMP-9) that could affect placental angiogenesis and remodeling. We determine that HBCs have the capacity to play a defensive role, where they are responsive to Toll-like receptor stimulation and are microbicidal. Finally, we also identify a population of placenta-associated maternal macrophages (PAMM1a) that adhere to the placental surface and express factors, such as fibronectin, that may aid in repair.
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Affiliation(s)
- Jake R Thomas
- Department of Pathology, University of Cambridge, Cambridge, UK.,Centre for Trophoblast Research, Departments of Physiology and Neuroscience, University of Cambridge, Cambridge, UK
| | - Anna Appios
- Department of Pathology, University of Cambridge, Cambridge, UK.,Centre for Trophoblast Research, Departments of Physiology and Neuroscience, University of Cambridge, Cambridge, UK
| | - Xiaohui Zhao
- Centre for Trophoblast Research, Departments of Physiology and Neuroscience, University of Cambridge, Cambridge, UK
| | | | - Maria Donde
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - Colin Y C Lee
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - Praveena Naidu
- Department of Pathology, University of Cambridge, Cambridge, UK.,Centre for Trophoblast Research, Departments of Physiology and Neuroscience, University of Cambridge, Cambridge, UK
| | - Christopher Lee
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Joana Cerveira
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - Bing Liu
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, China.,State Key Laboratory of Proteomics, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing, China.,State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences, Tianjin, China
| | - Florent Ginhoux
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, Singapore.,Shanghai Institute of Immunology, Shanghai JiaoTong University School of Medicine, Shanghai, China.,Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre, Singapore, Singapore
| | - Graham Burton
- Centre for Trophoblast Research, Departments of Physiology and Neuroscience, University of Cambridge, Cambridge, UK
| | - Russell S Hamilton
- Centre for Trophoblast Research, Departments of Physiology and Neuroscience, University of Cambridge, Cambridge, UK.,Department of Genetics, University of Cambridge, Cambridge, UK
| | - Ashley Moffett
- Department of Pathology, University of Cambridge, Cambridge, UK.,Centre for Trophoblast Research, Departments of Physiology and Neuroscience, University of Cambridge, Cambridge, UK
| | - Andrew Sharkey
- Department of Pathology, University of Cambridge, Cambridge, UK.,Centre for Trophoblast Research, Departments of Physiology and Neuroscience, University of Cambridge, Cambridge, UK
| | - Naomi McGovern
- Department of Pathology, University of Cambridge, Cambridge, UK.,Centre for Trophoblast Research, Departments of Physiology and Neuroscience, University of Cambridge, Cambridge, UK
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9
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Kossar AP, Anselmo W, Grau JB, Liu Y, Small A, Carter SL, Salvador L, Zhao L, Cvijic ME, Li Z, Yarde M, Rioux N, Rader DJ, Levy RJ, Ferrari G. Circulating and tissue matricellular RNA and protein expression in calcific aortic valve disease. Physiol Genomics 2020; 52:191-199. [PMID: 32089075 DOI: 10.1152/physiolgenomics.00104.2019] [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] [Indexed: 11/22/2022] Open
Abstract
Aortic valve sclerosis is a highly prevalent, poorly characterized asymptomatic manifestation of calcific aortic valve disease and may represent a therapeutic target for disease mitigation. Human aortic valve cusps and blood were obtained from 333 patients undergoing cardiac surgery (n = 236 for severe aortic stenosis, n = 35 for asymptomatic aortic valve sclerosis, n = 62 for no valvular disease), and a multiplex assay was used to evaluate protein expression across the spectrum of calcific aortic valve disease. A subset of six valvular tissue samples (n = 3 for asymptomatic aortic valve sclerosis, n = 3 for severe aortic stenosis) was used to create RNA sequencing profiles, which were subsequently organized into clinically relevant gene modules. RNA sequencing identified 182 protein-encoding, differentially expressed genes in aortic valve sclerosis vs. aortic stenosis; 85% and 89% of expressed genes overlapped in aortic stenosis and aortic valve sclerosis, respectively, which decreased to 55% and 84% when we targeted highly expressed genes. Bioinformatic analyses identified six differentially expressed genes encoding key extracellular matrix regulators: TBHS2, SPARC, COL1A2, COL1A1, SPP1, and CTGF. Differential expression of key circulating biomarkers of extracellular matrix reorganization was observed in control vs. aortic valve sclerosis (osteopontin), control vs. aortic stenosis (osteoprotegerin), and aortic valve sclerosis vs. aortic stenosis groups (MMP-2), which corresponded to valvular mRNA expression. We demonstrate distinct mRNA and protein expression underlying aortic valve sclerosis and aortic stenosis. We anticipate that extracellular matrix regulators can serve as circulating biomarkers of early calcific aortic valve disease and as novel targets for early disease mitigation, pending prospective clinical investigations.
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Affiliation(s)
| | - Wanda Anselmo
- University of Pennsylvania, Philadelphia, Pennsylvania
| | - Juan B Grau
- Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Yichuan Liu
- The Children's Hospital of Philadelphia, Pennsylvania
| | - Aeron Small
- University of Pennsylvania, Philadelphia, Pennsylvania
| | | | | | - Lei Zhao
- Bristol-Myers Squibb, Princeton, New Jersey
| | | | - Zhuyin Li
- Bristol-Myers Squibb, Princeton, New Jersey
| | | | | | | | - Robert J Levy
- The Children's Hospital of Philadelphia, Pennsylvania
| | - Giovanni Ferrari
- Columbia University, New York, New York.,University of Pennsylvania, Philadelphia, Pennsylvania
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10
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Si J, Wang C, Zhang D, Wang B, Hou W, Zhou Y. Osteopontin in Bone Metabolism and Bone Diseases. Med Sci Monit 2020; 26:e919159. [PMID: 31996665 PMCID: PMC7003659 DOI: 10.12659/msm.919159] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 11/04/2019] [Indexed: 12/20/2022] Open
Abstract
Osteopontin (OPN), a secreted phosphoprotein, is a member of the small integrin-binding ligand N-linked glycoprotein (SIBLING) family of cell matrix proteins and participates in many biological activities. Studies have shown that OPN plays a role in bone metabolism and homeostasis. OPN not only is an important factor in neuron-mediated and endocrine-regulated bone mass, but also is involved in biological activities such as proliferation, migration, and adhesion of several bone-related cells, including bone marrow mesenchymal stem cells, hematopoietic stem cells, osteoclasts, and osteoblasts. OPN has been demonstrated to be closely related to the occurrence and development of many bone-related diseases, such as osteoporosis, rheumatoid arthritis, and osteosarcoma. As expected, the functions of OPN in the bone have become a research hotspot. In this article, we try to decipher the mechanism of OPN-regulated bone metabolism and bone diseases.
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Affiliation(s)
- Jinyan Si
- Affiliated Hospital of Stomatology, Medical College, Zhejiang University, Hangzhou, Zhejiang, P.R. China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Chaowei Wang
- Affiliated Hospital of Stomatology, Medical College, Zhejiang University, Hangzhou, Zhejiang, P.R. China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Denghui Zhang
- Affiliated Hospital of Stomatology, Medical College, Zhejiang University, Hangzhou, Zhejiang, P.R. China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Bo Wang
- Shanxi Medical University, Taiyuan, Shanxi, P.R. China
| | - Weiwei Hou
- Affiliated Hospital of Stomatology, Medical College, Zhejiang University, Hangzhou, Zhejiang, P.R. China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Yi Zhou
- Affiliated Hospital of Stomatology, Medical College, Zhejiang University, Hangzhou, Zhejiang, P.R. China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang, P.R. China
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11
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Abstract
Matrix metalloproteinases (MMPs) and their endogenous inhibitors have been studied in the myocardium for the past 2 decades. An incomplete knowledge base and experimental design issues with inhibitors have hampered attempts at translation, but clinical interest remains high because of strong associations between MMPs and outcomes after myocardial infarction (MI) as well as mechanistic studies showing MMP involvement at multiple stages of the MI wound-healing process. This Review focuses on how our understanding of MMPs has evolved from a one-dimensional early focus on measuring MMP activity, monitoring MMP:inhibitor ratios, and evaluating one MMP-substrate pair to the current use of systems biology approaches to integrate the whole MMP repertoire of roles in the left ventricular response to MI. MMP9 is used as an example MMP to explain these concepts and to provide a template for examining MMPs as mechanistic mediators of cardiac remodelling.
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Affiliation(s)
- Merry L Lindsey
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS, USA. .,Research Service,, G.V. (Sonny) Montgomery Veterans Affairs Medical Center, Jackson, MS, USA.
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12
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Chen W, Xia P, Wang H, Tu J, Liang X, Zhang X, Li L. The endothelial tip-stalk cell selection and shuffling during angiogenesis. J Cell Commun Signal 2019; 13:291-301. [PMID: 30903604 DOI: 10.1007/s12079-019-00511-z] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Accepted: 02/25/2019] [Indexed: 12/17/2022] Open
Abstract
Angiogenesis is a critical, fine-tuned, multi-staged biological process. Tip-stalk cell selection and shuffling are the building blocks of sprouting angiogenesis. Accumulated evidences show that tip-stalk cell selection and shuffling are regulated by a variety of physical, chemical and biological factors, especially the interaction among multiple genes, their products and environments. The classic Notch-VEGFR, Slit-Robo, ECM-binding integrin, semaphorin and CCN family play important roles in tip-stalk cell selection and shuffling. In this review, we outline the progress and prospect in the mechanism and the roles of the various molecules and related signaling pathways in endothelial tip-stalk cell selection and shuffling. In the future, the regulators of tip-stalk cell selection and shuffling would be the potential markers and targets for angiogenesis.
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Affiliation(s)
- Wenqi Chen
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Peng Xia
- Department of Anesthesia, Jilin Provincial People's Hospital, Changchun, China
| | - Heping Wang
- Department of Neurosurgery, Tongji Hospital, Tongji Medical School, Huazhong University of Science and Technology, Wuhan, China
| | - Jihao Tu
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Xinyue Liang
- The First Hospital of Jilin University, Changchun, China
| | - Xiaoling Zhang
- The First Hospital of Jilin University, Changchun, China. .,Institute of Immunology, Jilin University, Changchun, China.
| | - Lisha Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China.
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13
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Pollard CM, Desimine VL, Wertz SL, Perez A, Parker BM, Maning J, McCrink KA, Shehadeh LA, Lymperopoulos A. Deletion of Osteopontin Enhances β₂-Adrenergic Receptor-Dependent Anti-Fibrotic Signaling in Cardiomyocytes. Int J Mol Sci 2019; 20:ijms20061396. [PMID: 30897705 PMCID: PMC6470638 DOI: 10.3390/ijms20061396] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/13/2019] [Accepted: 03/15/2019] [Indexed: 12/19/2022] Open
Abstract
Cardiac β2-adrenergic receptors (ARs) are known to inhibit collagen production and fibrosis in cardiac fibroblasts and myocytes. The β2AR is a Gs protein-coupled receptor (GPCR) and, upon its activation, stimulates the generation of cyclic 3′,5′-adenosine monophosphate (cAMP). cAMP has two effectors: protein kinase A (PKA) and the exchange protein directly activated by cAMP (Epac). Epac1 has been shown to inhibit cardiac fibroblast activation and fibrosis. Osteopontin (OPN) is a ubiquitous pro-inflammatory cytokine, which also mediates fibrosis in several tissues, including the heart. OPN underlies several cardiovascular pathologies, including atherosclerosis and cardiac adverse remodeling. We found that the cardiotoxic hormone aldosterone transcriptionally upregulates OPN in H9c2 rat cardiac myoblasts—an effect prevented by endogenous β2AR activation. Additionally, CRISPR-mediated OPN deletion enhanced cAMP generation in response to both β1AR and β2AR activation in H9c2 cardiomyocytes, leading to the upregulation of Epac1 protein levels. These effects rendered β2AR stimulation capable of completely abrogating transforming growth factor (TGF)-β-dependent fibrosis in OPN-lacking H9c2 cardiomyocytes. Finally, OPN interacted constitutively with Gαs subunits in H9c2 cardiac cells. Thus, we uncovered a direct inhibitory role of OPN in cardiac β2AR anti-fibrotic signaling via cAMP/Epac1. OPN blockade could be of value in the treatment and/or prevention of cardiac fibrosis.
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Affiliation(s)
- Celina M Pollard
- Laboratory for the Study of Neurohormonal Control of the Circulation, Department of Pharmaceutical Sciences (Pharmacology), College of Pharmacy; Nova Southeastern University, Fort Lauderdale, FL 33328, USA.
| | - Victoria L Desimine
- Laboratory for the Study of Neurohormonal Control of the Circulation, Department of Pharmaceutical Sciences (Pharmacology), College of Pharmacy; Nova Southeastern University, Fort Lauderdale, FL 33328, USA.
| | - Shelby L Wertz
- Laboratory for the Study of Neurohormonal Control of the Circulation, Department of Pharmaceutical Sciences (Pharmacology), College of Pharmacy; Nova Southeastern University, Fort Lauderdale, FL 33328, USA.
| | - Arianna Perez
- Laboratory for the Study of Neurohormonal Control of the Circulation, Department of Pharmaceutical Sciences (Pharmacology), College of Pharmacy; Nova Southeastern University, Fort Lauderdale, FL 33328, USA.
| | - Barbara M Parker
- Laboratory for the Study of Neurohormonal Control of the Circulation, Department of Pharmaceutical Sciences (Pharmacology), College of Pharmacy; Nova Southeastern University, Fort Lauderdale, FL 33328, USA.
| | - Jennifer Maning
- Laboratory for the Study of Neurohormonal Control of the Circulation, Department of Pharmaceutical Sciences (Pharmacology), College of Pharmacy; Nova Southeastern University, Fort Lauderdale, FL 33328, USA.
| | - Katie A McCrink
- Laboratory for the Study of Neurohormonal Control of the Circulation, Department of Pharmaceutical Sciences (Pharmacology), College of Pharmacy; Nova Southeastern University, Fort Lauderdale, FL 33328, USA.
| | - Lina A Shehadeh
- Department of Medicine, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Anastasios Lymperopoulos
- Laboratory for the Study of Neurohormonal Control of the Circulation, Department of Pharmaceutical Sciences (Pharmacology), College of Pharmacy; Nova Southeastern University, Fort Lauderdale, FL 33328, USA.
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14
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Wein M, Huelter-Hassler D, Nelson K, Fretwurst T, Nahles S, Finkenzeller G, Altmann B, Steinberg T. Differential osteopontin expression in human osteoblasts derived from iliac crest and alveolar bone and its role in early stages of angiogenesis. J Bone Miner Metab 2019; 37:105-117. [PMID: 29327303 DOI: 10.1007/s00774-017-0900-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 12/27/2017] [Indexed: 10/18/2022]
Abstract
In our previous study, we revealed significant differences of osteopontin (OPN) gene expression in primary human osteoblasts (HOBs) derived from iliac crest bone (iHOBs) and alveolar bone (aHOBs). The present study aims at assigning this discriminative expression to a possible biologic function. OPN is known to be involved in several pathologic and physiologic processes, among others angiogenesis. Therefore, we studied the reaction of human umbilical vein endothelial cells (HUVECs) to HOB-derived OPN regarding angiogenesis. To this end, human primary explant cultures of both bone entities from ten donors were established. Subsequent transcription analysis detected higher gene expression of OPN in iHOBs compared to aHOBs, thereby confirming the results of our previous study. This difference was particularly apparent when cultures were derived from female donors. Hence, OPN protein expression as well as the angiogenic potential of OPN was analyzed, originating from HOBs of one female donor. In accordance to the gene expression level, secreted OPN was more abundant in the supernatant of iHOBs than in aHOBs. Moreover, secreted OPN was found to stimulate migration of HUVECs, but not proliferation or tube formation. These results indicate an involvement in very early stages of angiogenesis and a functional distinction of OPN from HOBs derived from different bone entities.
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Affiliation(s)
- Martin Wein
- Department of Oral Biotechnology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstrasse 55, 79106, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Diana Huelter-Hassler
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- Department of Orthodontics, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Katja Nelson
- G.E.R.N. Tissue Replacement, Regeneration and Neogenesis, Department of Oral and Maxillofacial Surgery, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Tobias Fretwurst
- G.E.R.N. Tissue Replacement, Regeneration and Neogenesis, Department of Oral and Maxillofacial Surgery, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Susanne Nahles
- Department of Oral- and Maxillofacial Surgery, Charité Campus Virchow, Berlin, Germany
| | - Guenter Finkenzeller
- Department of Plastic and Hand Surgery, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Brigitte Altmann
- G.E.R.N. Tissue Replacement, Regeneration and Neogenesis, Department of Oral and Maxillofacial Surgery, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Thorsten Steinberg
- Department of Oral Biotechnology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstrasse 55, 79106, Freiburg, Germany.
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15
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Scholtysek C, Ipseiz N, Böhm C, Krishnacoumar B, Stenzel M, Czerwinski T, Palumbo-Zerr K, Rothe T, Weidner D, Klej A, Stoll C, Distler J, Tuckermann J, Herrmann M, Fabry B, Goldmann WH, Schett G, Krönke G. NR4A1 Regulates Motility of Osteoclast Precursors and Serves as Target for the Modulation of Systemic Bone Turnover. J Bone Miner Res 2018; 33:2035-2047. [PMID: 29949664 DOI: 10.1002/jbmr.3533] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/29/2018] [Accepted: 06/21/2018] [Indexed: 11/10/2022]
Abstract
NR4A1 (Nur77 or NGFI-B), an orphan member of the nuclear receptor superfamily, has been identified as a key regulator of the differentiation and function of myeloid, lymphoid, and mesenchymal cells. The detailed role of NR4A1 in bone biology is incompletely understood. Here, we report a role for NR4A1 as novel factor controlling the migration and recruitment of osteoclast precursors during bone remodeling. Myeloid-specific but not osteoblast-specific deletion of NR4A1 resulted in osteopenia due to an increase in the number of bone-lining osteoclasts. Although NR4A1-deficient osteoclast precursors displayed a regular differentiation into mature osteoclasts, they showed a hyper-motile phenotype that was largely dependent on increased osteopontin expression, suggesting that expression of NR4A1 negatively controlled osteopontin-mediated recruitment of osteoclast precursors to the trabecular bone. Pharmacological activation of NR4A1, in turn, inhibited osteopontin expression and osteopontin-dependent migration of osteoclast precursors resulted in reduced abundance of bone-resorbing osteoclasts in vivo as well as in an ameliorated bone loss after ovariectomy in mice. This study identifies NR4A1 as a crucial player in the regulation of osteoclast biology and bone remodeling and highlights this nuclear receptor as a promising target for therapeutic intervention during the treatment of osteoporosis. © 2018 The Authors. Journal of Bone and Mineral Research Published by Wiley Periodicals Inc.
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Affiliation(s)
- Carina Scholtysek
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.,Nikolaus Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Natacha Ipseiz
- School of Medicine, University of Cardiff, Cardiff, Wales
| | - Christina Böhm
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.,Nikolaus Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Brenda Krishnacoumar
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.,Nikolaus Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Martin Stenzel
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.,Nikolaus Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Tina Czerwinski
- Department of Biophysics, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Katrin Palumbo-Zerr
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.,Nikolaus Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Tobias Rothe
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.,Nikolaus Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Daniela Weidner
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.,Nikolaus Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Alexandra Klej
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.,Nikolaus Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Cornelia Stoll
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.,Nikolaus Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Jörg Distler
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Jan Tuckermann
- Institute of Comparative Molecular Endocrinology, University of Ulm, Ulm, Germany
| | - Martin Herrmann
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Ben Fabry
- Department of Biophysics, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Wolfgang H Goldmann
- Department of Biophysics, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Georg Schett
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Gerhard Krönke
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.,Nikolaus Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
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16
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Rogall R, Rabenstein M, Vay S, Bach A, Pikhovych A, Baermann J, Hoehn M, Couillard-Despres S, Fink GR, Schroeter M, Rueger MA. Bioluminescence imaging visualizes osteopontin-induced neurogenesis and neuroblast migration in the mouse brain after stroke. Stem Cell Res Ther 2018; 9:182. [PMID: 29973246 PMCID: PMC6032781 DOI: 10.1186/s13287-018-0927-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 05/24/2018] [Accepted: 06/13/2018] [Indexed: 11/26/2022] Open
Abstract
Background Osteopontin (OPN), an acidic phosphoglycoprotein, is upregulated in the brain after cerebral ischemia. We previously reported that OPN supports migration, survival, and proliferation of neural stem cells (NSC) in primary cell culture, as well as their differentiation into neurons. We here analyzed the effects of OPN on neuroblasts in vivo in the context of cerebral ischemia. Methods Transgenic mice expressing luciferase under the control of the neuroblast-specific doublecortin (DCX)-promoter, allowing visualization of neuroblasts in vivo using bioluminescence imaging (BLI), were injected with OPN intracerebroventricularly while control mice were injected with vehicle buffer. To assess the effects of OPN after ischemia, additional mice were subjected to photothrombosis and injected with either OPN or vehicle. Results OPN enhanced the migration of neuroblasts both in the healthy brain and after ischemia, as quantified by BLI in vivo. Moreover, the number of neural progenitors was increased following OPN treatment, with the maximum effect on the second day after OPN injection into the healthy brain, and 14 days after OPN injection following ischemia. After ischemia, OPN quantitatively promoted the endogenous, ischemia-induced neuroblast expansion, and additionally recruited progenitors from the contralateral hemisphere. Conclusions Our results strongly suggest that OPN constitutes a promising substance for the targeted activation of neurogenesis in ischemic stroke.
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Affiliation(s)
- Rebecca Rogall
- Department of Neurology, University Hospital of Cologne, Kerpener Strasse 62, 50924, Cologne, Germany.,Max Planck Institute for Metabolism Research, Cologne, Germany
| | - Monika Rabenstein
- Department of Neurology, University Hospital of Cologne, Kerpener Strasse 62, 50924, Cologne, Germany
| | - Sabine Vay
- Department of Neurology, University Hospital of Cologne, Kerpener Strasse 62, 50924, Cologne, Germany
| | - Annika Bach
- Department of Neurology, University Hospital of Cologne, Kerpener Strasse 62, 50924, Cologne, Germany.,Max Planck Institute for Metabolism Research, Cologne, Germany
| | - Anton Pikhovych
- Department of Neurology, University Hospital of Cologne, Kerpener Strasse 62, 50924, Cologne, Germany.,Max Planck Institute for Metabolism Research, Cologne, Germany
| | - Johannes Baermann
- Department of Neurology, University Hospital of Cologne, Kerpener Strasse 62, 50924, Cologne, Germany
| | - Mathias Hoehn
- Max Planck Institute for Metabolism Research, Cologne, Germany
| | - Sébastien Couillard-Despres
- Institute of Experimental Neuroregeneration, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria
| | - Gereon Rudolf Fink
- Department of Neurology, University Hospital of Cologne, Kerpener Strasse 62, 50924, Cologne, Germany.,Cognitive Neuroscience Section, Institute of Neuroscience and Medicine (INM-3), Research Centre Juelich, Juelich, Germany
| | - Michael Schroeter
- Department of Neurology, University Hospital of Cologne, Kerpener Strasse 62, 50924, Cologne, Germany.,Max Planck Institute for Metabolism Research, Cologne, Germany.,Cognitive Neuroscience Section, Institute of Neuroscience and Medicine (INM-3), Research Centre Juelich, Juelich, Germany
| | - Maria Adele Rueger
- Department of Neurology, University Hospital of Cologne, Kerpener Strasse 62, 50924, Cologne, Germany. .,Max Planck Institute for Metabolism Research, Cologne, Germany. .,Cognitive Neuroscience Section, Institute of Neuroscience and Medicine (INM-3), Research Centre Juelich, Juelich, Germany.
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17
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An R, Schmid R, Klausing A, Robering JW, Weber M, Bäuerle T, Detsch R, Boccaccini AR, Horch RE, Boos AM, Weigand A. Proangiogenic effects of tumor cells on endothelial progenitor cells vary with tumor type in an in vitro and in vivo rat model. FASEB J 2018; 32:5587-5601. [PMID: 29746168 DOI: 10.1096/fj.201800135rr] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Endothelial progenitor cells (EPCs) contribute to neovascularization in tumors. However, the relationship of EPCs and tumor-induced angiogenesis still remains to be clarified. The present study aimed at investigating the influence of 4 different tumor types on angiogenic properties of EPCs in an in vitro and in vivo rat model. It could be demonstrated that in vitro proliferation, migration, and angiogenic abilities and genetic modifications of EPCs are controlled in a tumor-type-dependent manner. The proangiogenic effect of mammary carcinoma, osteosarcoma, and rhabdomyosarcoma cells was more pronounced compared to colon carcinoma cells. Coinjection of encapsulated tumor cells, especially mammary carcinoma cells, and EPCs in a rat model confirmed a contributing effect of EPCs in tumor vascularization. Cytokines secreted by tumors such as monocyte chemoattractant protein 1, macrophage inflammatory protein 2, and TNF-related apoptosis-inducing ligand play a pivotal role in the tumor cell-EPC interaction, leading to enhanced migration and angiogenesis. With the present study, we were able to decipher possible underlying mechanisms by which EPCs are stimulated by tumor cells and contribute to tumor vascularization. The present study will contribute to a better understanding of tumor-induced vascularization, thus facilitating the development of therapeutic strategies targeting tumor-EPC interactions.-An, R., Schmid, R., Klausing, A., Robering, J. W., Weber, M., Bäuerle, T., Detsch, R., Boccaccini, A. R., Horch, R. E., Boos, A. M., Weigand, A. Proangiogenic effects of tumor cells on endothelial progenitor cells vary with tumor type in an in vitro and in vivo rat model.
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Affiliation(s)
- Ran An
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany.,Union Plastic and Aesthetic Hospital, Huazhong University of Science and Technology, Wuhan Union Hospital, Wuhan, Hubei, China
| | - Rafael Schmid
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Anne Klausing
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Jan W Robering
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Maximilian Weber
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Tobias Bäuerle
- Department of Radiology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany; and
| | - Rainer Detsch
- Department of Materials Science and Engineering, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Aldo R Boccaccini
- Department of Materials Science and Engineering, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Raymund E Horch
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Anja M Boos
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Annika Weigand
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
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18
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Affiliation(s)
- Isabella Albanese
- Division of Cardiology and Division of Cardiac Surgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - Kashif Khan
- Division of Cardiology and Division of Cardiac Surgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - Bianca Barratt
- Division of Cardiology and Division of Cardiac Surgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - Hamood Al-Kindi
- Division of Cardiology and Division of Cardiac Surgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - Adel Schwertani
- Division of Cardiology and Division of Cardiac Surgery, McGill University Health Centre, Montreal, Quebec, Canada
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19
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Driesbaugh KH, Branchetti E, Grau JB, Keeney SJ, Glass K, Oyama MA, Rioux N, Ayoub S, Sacks MS, Quackenbush J, Levy RJ, Ferrari G. Serotonin receptor 2B signaling with interstitial cell activation and leaflet remodeling in degenerative mitral regurgitation. J Mol Cell Cardiol 2017; 115:94-103. [PMID: 29291394 DOI: 10.1016/j.yjmcc.2017.12.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 12/19/2017] [Accepted: 12/28/2017] [Indexed: 11/17/2022]
Abstract
AIMS Mitral valve interstitial cells (MVIC) play an important role in the pathogenesis of degenerative mitral regurgitation (MR) due to mitral valve prolapse (MVP). Numerous clinical studies have observed serotonin (5HT) dysregulation in cardiac valvulopathies; however, the impact of 5HT-mediated signaling on MVIC activation and leaflet remodeling in MVP have been investigated to a limited extent. Here we test the hypothesis that 5HT receptors (5HTRs) signaling contributes to MVP pathophysiology. METHODS AND RESULTS Diseased human MV leaflets were obtained during cardiac surgery for MVP; normal MV leaflets were obtained from heart transplants. MV RNA was used for microarray analysis of MVP patients versus control, highlighting genes that indicate the involvement of 5HTR pathways and extracellular matrix remodeling in MVP. Human MV leaflets were also studied in vitro and ex vivo with biomechanical testing to assess remodeling in the presence of a 5HTR2B antagonist (LY272015). MVP leaflets from Cavalier King Charles Spaniels were used as a naturally acquired in vivo model of MVP. These canine MVP leaflets (N=5/group) showed 5HTR2B upregulation. This study also utilized CB57.1ML/6 mice in order to determine the effect of Angiotensin II infusion on MV remodeling. Histological analysis showed that MV thickening due to chronic Angiotensin II remodeling is mitigated by a 5HTR2B antagonist (LY272015) but not by 5HTR2A inhibitors. CONCLUSION In humans, MVP is associated with an upregulation in 5HTR2B expression and increased 5HT receptor signaling in the leaflets. Antagonism of 5HTR2B mitigates MVIC activation in vitro and MV remodeling in vivo. These observations support the view that 5HTR signaling is involved not only in previously reported 5HT-related valvulopathies, but it is also involved in the pathological remodeling of MVP.
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Affiliation(s)
| | | | - Juan B Grau
- University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Samuel J Keeney
- University of Pennsylvania, Philadelphia, PA, United States; Columbia University, New York, NY, United States
| | - Kimberly Glass
- Dana Farber Cancer Center, Harvard University, Boston, MT, United States
| | - Mark A Oyama
- University of Pennsylvania, Philadelphia, PA, United States
| | - Nancy Rioux
- The Valley Hospital, Ridgewood, NJ, United States
| | - Salma Ayoub
- University of Texas at Austin, Austin, TX, United States
| | | | - John Quackenbush
- Dana Farber Cancer Center, Harvard University, Boston, MT, United States
| | - Robert J Levy
- The Children's Hospital of Philadelphia, Philadelphia, PA, United States
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20
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Vidmar J, Chingwaru C, Chingwaru W. Mammalian cell models to advance our understanding of wound healing: a review. J Surg Res 2017; 210:269-280. [DOI: 10.1016/j.jss.2016.10.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Revised: 07/12/2016] [Accepted: 10/14/2016] [Indexed: 12/30/2022]
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21
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Kaempferol inhibits the production of ROS to modulate OPN–αvβ3 integrin pathway in HUVECs. J Physiol Biochem 2016; 72:303-13. [DOI: 10.1007/s13105-016-0479-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 03/08/2016] [Indexed: 12/22/2022]
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22
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Tai S, Hu XQ, Peng DQ, Zhou SH, Zheng XL. The roles of autophagy in vascular smooth muscle cells. Int J Cardiol 2016; 211:1-6. [PMID: 26954728 DOI: 10.1016/j.ijcard.2016.02.128] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/05/2016] [Accepted: 02/22/2016] [Indexed: 12/21/2022]
Abstract
Autophagy, which is an evolutionarily conserved mechanism and links to several cellular pathways, impacts vascular smooth muscle cells (VSMCs) survival and function. Activation of autophagy by intercellular and/or extracellular stimuli has protective effects on VSMCs against cell death, while on the contrary, overloading autophagy has been recognized as a deleterious process by excessive self-digestion. Alterations in autophagy has been documented in VSMC in response to various stimuli, resulting in modulation of VSMC functions, including proliferation, migration, matrix secretion, contraction/relaxation, and differentiation. Each of these changes in VSMC functions plays a critical role in the development of vascular diseases. Importantly, emerging evidence demonstrates that autophagy deficiency in VSMCs would contribute to atherosclerosis and restenosis, shedding novel light on therapeutic target of the vascular disorders. Herein, this review summarizes the recent progress associated with the roles of autophagy in VSMC and offers the perspectives to several challenges and future directions for further studies.
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Affiliation(s)
- Shi Tai
- Dept. of Biochemistry & Molecular Biology, Faculty of Medicine, Univ. of Calgary, Calgary, Alberta, Canada; Dept. of Cardiology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Xin-Qun Hu
- Dept. of Cardiology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Dao-Quan Peng
- Dept. of Cardiology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Sheng-Hua Zhou
- Dept. of Cardiology, The Second Xiangya Hospital of Central South University, Changsha, China.
| | - Xi-Long Zheng
- Dept. of Biochemistry & Molecular Biology, Faculty of Medicine, Univ. of Calgary, Calgary, Alberta, Canada; Dept. of Cardiology, The Second Xiangya Hospital of Central South University, Changsha, China.
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23
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Cells and extracellular matrix interplay in cardiac valve disease: because age matters. Basic Res Cardiol 2016; 111:16. [PMID: 26830603 DOI: 10.1007/s00395-016-0534-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 12/27/2015] [Accepted: 01/19/2016] [Indexed: 12/18/2022]
Abstract
Cardiovascular aging is a physiological process affecting all components of the heart. Despite the interest and experimental effort lavished on aging of cardiac cells, increasing evidence is pointing at the pivotal role of extracellular matrix (ECM) in cardiac aging. Structural and molecular changes in ECM composition during aging are at the root of significant functional modifications at the level of cardiac valve apparatus. Indeed, calcification or myxomatous degeneration of cardiac valves and their functional impairment can all be explained in light of age-related ECM alterations and the reciprocal interplay between altered ECM and cellular elements populating the leaflet, namely valvular interstitial cells and valvular endothelial cells, is additionally affecting valve function with striking reflexes on the clinical scenario. The initial experimental findings on this argument are underlining the need for a more comprehensive understanding on the biological mechanisms underlying ECM aging and remodeling as potentially constituting a pharmacological therapeutic target or a basis to improve existing prosthetic devices and treatment options. Given the lack of systematic knowledge on this topic, this review will focus on the ECM changes that occur during aging and on their clinical translational relevance and implications in the bedside scenario.
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Gajjala PR, Sanati M, Jankowski J. Cellular and Molecular Mechanisms of Chronic Kidney Disease with Diabetes Mellitus and Cardiovascular Diseases as Its Comorbidities. Front Immunol 2015. [PMID: 26217336 PMCID: PMC4495338 DOI: 10.3389/fimmu.2015.00340] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Chronic kidney disease (CKD), diabetes mellitus (DM), and cardiovascular diseases (CVD) are complex disorders of partly unknown genesis and mostly known progression factors. CVD and DM are the risk factors of CKD and are strongly intertwined since DM can lead to both CKD and/or CVD, and CVD can lead to kidney disease. In recent years, our knowledge of CKD, DM, and CVD has been expanded and several important experimental, clinical, and epidemiological associations have been reported. The tight cellular and molecular interactions between the renal, diabetic, and cardiovascular systems in acute or chronic disease settings are becoming increasingly evident. However, the (patho-) physiological basis of the interactions of CKD, DM, and CVD with involvement of multiple endogenous and environmental factors is highly complex and our knowledge is still at its infancy. Not only single pathways and mediators of progression of these diseases have to be considered in these processes but also the mutual interactions of these factors are essential. The recent advances in proteomics and integrative analysis technologies have allowed rapid progress in analyzing complex disorders and clearly show the opportunity for new efficient and specific therapies. More than a dozen pathways have been identified so far, including hyperactivity of the renin–angiotensin (RAS)–aldosterone system, osmotic sodium retention, endothelial dysfunction, dyslipidemia, RAS/RAF/extracellular-signal-regulated kinase pathway, modification of the purinergic system, phosphatidylinositol 3-kinase (PI 3-kinase)-dependent signaling pathways, and inflammation, all leading to histomorphological alterations of the kidney and vessels of diabetic and non-diabetic patients. Since a better understanding of the common cellular and molecular mechanisms of these diseases may be a key to successful identification of new therapeutic targets, we review in this paper the current literature about cellular and molecular mechanisms of CKD.
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Affiliation(s)
- Prathibha Reddy Gajjala
- Institute for Molecular Cardiovascular Research, Universitätsklinikum RWTH Aachen , Aachen , Germany
| | - Maryam Sanati
- Institute for Molecular Cardiovascular Research, Universitätsklinikum RWTH Aachen , Aachen , Germany
| | - Joachim Jankowski
- Institute for Molecular Cardiovascular Research, Universitätsklinikum RWTH Aachen , Aachen , Germany
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25
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Regulation of valve endothelial cell vasculogenic network architectures with ROCK and Rac inhibitors. Microvasc Res 2015; 98:108-18. [PMID: 25660064 PMCID: PMC4974942 DOI: 10.1016/j.mvr.2015.01.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 01/03/2015] [Accepted: 01/26/2015] [Indexed: 12/31/2022]
Abstract
OBJECTIVE The age- and disease-dependent presence of microvessels within heart valves is an understudied characteristic of these tissues. Neovascularization involves endothelial cell (EC) migration and cytoskeletal reorientation, which are heavily regulated by the Rho family of GTPases. Given that valve ECs demonstrate unique mesenchymal transdifferentiation and cytoskeletal mechanoresponsiveness, compared to vascular ECs, this study quantified the effect of inhibiting two members of the Rho family on vasculogenic network formation by valve ECs. APPROACH AND RESULTS A tubule-like structure vasculogenesis assay (assessing lacunarity, junction density, and vessel density) was performed with porcine aortic valve ECs treated with small molecule inhibitors of Rho-associated serine-threonine protein kinase (ROCK), Y-27632, or the Rac1 inhibitor, NSC-23766. Actin coordination, cell number, and cell migration were assessed through immunocytochemistry, MTT assay, and scratch wound healing assay. ROCK inhibition reduced network lacunarity and interrupted proper cell-cell adhesion and actin coordination. Rac1 inhibition increased lacunarity and delayed actin-mediated network formation. ROCK inhibition alone significantly inhibited migration, whereas both ROCK and Rac1 inhibition significantly reduced cell number over time compared to controls. Compared to a vascular EC line, the valve ECs generated a network with larger total vessel length, but a less smooth appearance. CONCLUSIONS Both ROCK and Rac1 inhibition interfered with key processes in vascular network formation by valve ECs. This is the first report of manipulation of valve EC vasculogenic organization in response to small molecule inhibitors. Further study is warranted to comprehend this facet of valvular cell biology and pathology and how it differs from vascular biology.
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26
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Poggio P, Branchetti E, Grau JB, Lai EK, Gorman RC, Gorman JH, Sacks MS, Bavaria JE, Ferrari G. Osteopontin-CD44v6 interaction mediates calcium deposition via phospho-Akt in valve interstitial cells from patients with noncalcified aortic valve sclerosis. Arterioscler Thromb Vasc Biol 2014; 34:2086-94. [PMID: 25060796 DOI: 10.1161/atvbaha.113.303017] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The activation of valve interstitial cells (VICs) toward an osteogenic phenotype characterizes aortic valve sclerosis, the early asymptomatic phase of calcific aortic valve disease. Osteopontin is a phosphorylated acidic glycoprotein that accumulates within the aortic leaflets and labels VIC activation even in noncalcified asymptomatic patients. Despite this, osteopontin protects VICs against in vitro calcification. Here, we hypothesize that the specific interaction of osteopontin with CD44v6, and the related intracellular pathway, prevents calcium deposition in human-derived VICs from patients with aortic valve sclerosis. APPROACH AND RESULTS On informed consent, 23 patients and 4 controls were enrolled through the cardiac surgery and heart transplant programs. Human aortic valves and VICs were tested for osteogenic transdifferentiation, ex vivo and in vitro. Osteopontin-CD44 interaction was analyzed using proximity ligation assay and the signaling pathways investigated. A murine model based on angiotensin II infusion was used to mimic early pathological remodeling of the aortic valves. We report osteopontin-CD44 functional interaction as a hallmark of early stages of calcific aortic valve disease. We demonstrated that osteopontin-CD44 interaction mediates calcium deposition via phospho-Akt in VICs from patients with noncalcified aortic valve sclerosis. Finally, microdissection analysis of murine valves shows increased cusp thickness in angiotensin II-treated mice versus saline infused along with colocalization of osteopontin and CD44 as seen in human lesions. CONCLUSIONS Here, we unveil a specific protein-protein association and intracellular signaling mechanisms of osteopontin. Understanding the molecular mechanisms of early VIC activation and calcium deposition in asymptomatic stage of calcific aortic valve disease could open new prospective for diagnosis and therapeutic intervention.
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Affiliation(s)
- Paolo Poggio
- From the Department of Surgery, Perelman School of Medicine at University of Pennsylvania, Philadelphia (P.P., E.B., J.B.G., E.K.L., R.C.G., J.H.G., J.E.B., G.F.); Centro Cardiologico Monzino IRCCS, Milan, Italy (P.P.); Columbia University-Valley Heart Center, Ridgewood, NJ (J.B.G.); and Department of Biomedical Engineering, University of Texas at Austin (M.S.S.)
| | - Emanuela Branchetti
- From the Department of Surgery, Perelman School of Medicine at University of Pennsylvania, Philadelphia (P.P., E.B., J.B.G., E.K.L., R.C.G., J.H.G., J.E.B., G.F.); Centro Cardiologico Monzino IRCCS, Milan, Italy (P.P.); Columbia University-Valley Heart Center, Ridgewood, NJ (J.B.G.); and Department of Biomedical Engineering, University of Texas at Austin (M.S.S.)
| | - Juan B Grau
- From the Department of Surgery, Perelman School of Medicine at University of Pennsylvania, Philadelphia (P.P., E.B., J.B.G., E.K.L., R.C.G., J.H.G., J.E.B., G.F.); Centro Cardiologico Monzino IRCCS, Milan, Italy (P.P.); Columbia University-Valley Heart Center, Ridgewood, NJ (J.B.G.); and Department of Biomedical Engineering, University of Texas at Austin (M.S.S.)
| | - Eric K Lai
- From the Department of Surgery, Perelman School of Medicine at University of Pennsylvania, Philadelphia (P.P., E.B., J.B.G., E.K.L., R.C.G., J.H.G., J.E.B., G.F.); Centro Cardiologico Monzino IRCCS, Milan, Italy (P.P.); Columbia University-Valley Heart Center, Ridgewood, NJ (J.B.G.); and Department of Biomedical Engineering, University of Texas at Austin (M.S.S.)
| | - Robert C Gorman
- From the Department of Surgery, Perelman School of Medicine at University of Pennsylvania, Philadelphia (P.P., E.B., J.B.G., E.K.L., R.C.G., J.H.G., J.E.B., G.F.); Centro Cardiologico Monzino IRCCS, Milan, Italy (P.P.); Columbia University-Valley Heart Center, Ridgewood, NJ (J.B.G.); and Department of Biomedical Engineering, University of Texas at Austin (M.S.S.)
| | - Joseph H Gorman
- From the Department of Surgery, Perelman School of Medicine at University of Pennsylvania, Philadelphia (P.P., E.B., J.B.G., E.K.L., R.C.G., J.H.G., J.E.B., G.F.); Centro Cardiologico Monzino IRCCS, Milan, Italy (P.P.); Columbia University-Valley Heart Center, Ridgewood, NJ (J.B.G.); and Department of Biomedical Engineering, University of Texas at Austin (M.S.S.)
| | - Michael S Sacks
- From the Department of Surgery, Perelman School of Medicine at University of Pennsylvania, Philadelphia (P.P., E.B., J.B.G., E.K.L., R.C.G., J.H.G., J.E.B., G.F.); Centro Cardiologico Monzino IRCCS, Milan, Italy (P.P.); Columbia University-Valley Heart Center, Ridgewood, NJ (J.B.G.); and Department of Biomedical Engineering, University of Texas at Austin (M.S.S.)
| | - Joseph E Bavaria
- From the Department of Surgery, Perelman School of Medicine at University of Pennsylvania, Philadelphia (P.P., E.B., J.B.G., E.K.L., R.C.G., J.H.G., J.E.B., G.F.); Centro Cardiologico Monzino IRCCS, Milan, Italy (P.P.); Columbia University-Valley Heart Center, Ridgewood, NJ (J.B.G.); and Department of Biomedical Engineering, University of Texas at Austin (M.S.S.)
| | - Giovanni Ferrari
- From the Department of Surgery, Perelman School of Medicine at University of Pennsylvania, Philadelphia (P.P., E.B., J.B.G., E.K.L., R.C.G., J.H.G., J.E.B., G.F.); Centro Cardiologico Monzino IRCCS, Milan, Italy (P.P.); Columbia University-Valley Heart Center, Ridgewood, NJ (J.B.G.); and Department of Biomedical Engineering, University of Texas at Austin (M.S.S.).
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Liu ZK, Xiao HB, Fang J. Anti-inflammatory properties of kaempferol via its inhibition of aldosterone signaling and aldosterone-induced gene expression. Can J Physiol Pharmacol 2014; 92:117-23. [DOI: 10.1139/cjpp-2013-0298] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Osteopontin (OPN), also called cytokine Eta-1, is a pro-inflammatory cytokine. Recent studies have shown that aldosterone increases OPN gene expression in endothelial cells. As a flavonoid compound, kaempferol has potent anti-inflammatory properties, but whether kaempferol regulates aldosterone signaling and aldosterone-induced gene expression is still unknown. Human umbilical vein endothelial cells (HUVECs) were pretreated with kaempferol (0, 1, 3, or 10 μmol/L) for 1 h prior to exposure to aldosterone (10−6 mol/L) for 24 h. Aldosterone induced generation of reactive oxygen species; OPN and cluster of differentiation 44 gene expression; phospho-p38 MAPK and NF-κB binding activity. The effect of aldosterone was abrogated by kaempferol and spironolactone (10−6 mol/L). The present results suggest that kaempferol exerts its anti-inflammatory properties via its inhibition of aldosterone signaling and aldosterone-induced gene expression in HUVECs.
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Affiliation(s)
- Zi-Kui Liu
- College of Veterinary Medicine, Hunan Agricultural University, Furong District, Changsha 410128, China
| | - Hong-Bo Xiao
- College of Veterinary Medicine, Hunan Agricultural University, Furong District, Changsha 410128, China
| | - Jun Fang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
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28
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Guo H, Li Q, Chou DW, Uitto J. Atorvastatin counteracts aberrant soft tissue mineralization in a mouse model of pseudoxanthoma elasticum (Abcc6⁻/⁻). J Mol Med (Berl) 2013; 91:1177-84. [PMID: 23807484 DOI: 10.1007/s00109-013-1066-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 06/04/2013] [Accepted: 06/10/2013] [Indexed: 01/07/2023]
Abstract
UNLABELLED Pseudoxanthoma elasticum (PXE), a multisystem heritable disorder with aberrant mineralization of arterial blood vessels, is caused by mutations in the ABCC6 gene. Previous studies have suggested that carriers of the ABCC6 mutations, particularly of p.R1141X, are at increased risk for coronary artery disease. In this study, we used Abcc6 (tm1Jfk) knock-out mice to determine the serum lipid profiles and examine the effects of atorvastatin on the aberrant mineralization in this model of PXE. First, serum lipid profiles at 12 weeks of age, after overnight fasting, revealed a statistically significant increase in total cholesterol and triglyceride levels in Abcc6 (tm1Jfk) mice compared to their wild-type littermates. Placing these mice at 4 weeks of age for 20 weeks on atorvastatin, either 0.01 % or 0.04 % of the diet (low statin and high statin groups, respectively), reduced the total triglyceride and cholesterol levels, which was accompanied with significantly reduced mineralization of the dermal sheath of vibrissae, a biomarker of the aberrant mineralization process in these mice. However, if the mice were placed on atorvastatin for 12 weeks at 12 weeks of age, at which time point significant mineralization had already taken place, no difference in the amount of mineralization was noted. These observations suggest that statins, particularly atorvastatin, can prevent, but not reverse, aberrant mineralization in this mouse model of PXE. For a clinical perspective, a survey of 1,747 patients with PXE was conducted regarding their present or past use of statins. The results indicated that about one third of all PXE patients are currently or have previously been on cholesterol-lowering drugs. Thus, a sizable number of patients with PXE could be subject to modulation of their mineralization processes by concomitant statin treatment. KEY MESSAGE The Abcc6 (-/-) mice serve as a model system for PXE, an ectopic mineralization disorder Abcc6 (-/-) mice were shown to have elevated serum cholesterol and triglyceride levels Feeding of the Abcc6 (-/-) mice with atorvastatin prevented connective tissue mineralization A third of patients with PXE was found to be on cholesterol-lowering therapy Atorvastatin may potentially be beneficial for patients with PXE.
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Affiliation(s)
- Haitao Guo
- Departments of Dermatology and Cutaneous Biology, and Biochemistry and Molecular Biology, Jefferson Medical College, and Jefferson Institute of Molecular Medicine, Thomas Jefferson University, 233 South 10th Street, Suite 450 BLSB, Philadelphia, PA, 19107, USA
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29
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Sainger R, Grau JB, Branchetti E, Poggio P, Lai E, Koka E, Vernick WJ, Gorman RC, Bavaria JE, Ferrari G. Comparison of transesophageal echocardiographic analysis and circulating biomarker expression profile in calcific aortic valve disease. THE JOURNAL OF HEART VALVE DISEASE 2013; 22:156-165. [PMID: 23798203 PMCID: PMC4118022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND AND AIM OF THE STUDY Aortic valve sclerosis (AVSc), the early asymptomatic stage of calcific aortic valve disease (CAVD), is characterized by a progressive thickening of the aortic cusps without obstruction of the left ventricular outflow. In spite of its high prevalence, there are no molecular markers to characterize the early stages of CAVD before it progresses to a severe, symptomatic stage of aortic valve stenosis (AVS). The study aim was to identify any correlation between circulating biomarkers and transesophageal echocardiography (TEE) evaluation. METHODS A total of 330 patients with various degrees of CAVD was enrolled into the study. Blood was collected from each patient prior to surgery, and analyzed using ELISA kits following the manufacturers' instructions. RESULTS Significantly higher plasma osteopontin (OPN) levels were observed in AVSc patients (72.7 +/- 1.8 ng/ml; p < 0.001) and AVS patients (64.3 +/- 5.1 ng/ml; p < 0.001) when compared to controls (30.3 +/- 1.8 ng/ml). Parathyroid hormone (PTH) levels in AVSc and AVS patients (164.1 +/- 16.5 and 134.3 +/- 14.6 pg/ml; p < 0.001 and p = 0.04, respectively) were also significantly higher than in controls (61.8 +/- 4.92 pg/ml). Upon further analysis, plasma levels of OPN (p < 0.001) and PTH (p < 0.001) were found to be significantly higher in asymptomatic AVSc patients, even before calcium deposition was detected on TEE evaluation. Fetuin-A levels were lower at all stages of CAVD when compared to controls (p < 0.001 and p < or = 0.05, respectively), but were comparable among the patient groups. NT-proBNP levels were significantly higher in AVS patients than in controls (p < or = 0.01). CONCLUSION Serum levels of OPN, PTH, and fetuin-A showed a significant association with different stages of CAVD, with variations in their levels occurring before calcium nodules are visualized during TEE evaluation. The study results may help not only to provide a better understanding of the progression of CAVD but also to develop new tools that can be used to stage these patients.
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Affiliation(s)
- Rachana Sainger
- Perelman School of Medicine at University of Pennsylvania, Department of Surgery, Division of Cardiovascular Surgery, Philadelphia, PA
| | - Juan B. Grau
- The Valley-Columbia Heart Center, Columbia University College of Physicians and Surgeons, Ridgewood, NJ, USA
| | - Emanuela Branchetti
- Perelman School of Medicine at University of Pennsylvania, Department of Surgery, Division of Cardiovascular Surgery, Philadelphia, PA
| | - Paolo Poggio
- Perelman School of Medicine at University of Pennsylvania, Department of Surgery, Division of Cardiovascular Surgery, Philadelphia, PA
- Centro Cardiologico Monzino, University of Milan, Italy
| | - Eric Lai
- Perelman School of Medicine at University of Pennsylvania, Department of Surgery, Division of Cardiovascular Surgery, Philadelphia, PA
| | - Erblina Koka
- Perelman School of Medicine at University of Pennsylvania, Department of Surgery, Division of Cardiovascular Surgery, Philadelphia, PA
| | - William J. Vernick
- Perelman School of Medicine at University of Pennsylvania, Department of Surgery, Division of Cardiovascular Surgery, Philadelphia, PA
| | - Robert C. Gorman
- Perelman School of Medicine at University of Pennsylvania, Department of Surgery, Division of Cardiovascular Surgery, Philadelphia, PA
| | - Joseph E. Bavaria
- Perelman School of Medicine at University of Pennsylvania, Department of Surgery, Division of Cardiovascular Surgery, Philadelphia, PA
| | - Giovanni Ferrari
- Perelman School of Medicine at University of Pennsylvania, Department of Surgery, Division of Cardiovascular Surgery, Philadelphia, PA
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30
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Kokubo H, Miyagawa-Tomita S, Nakashima Y, Kume T, Yoshizumi M, Nakanishi T, Saga Y. Hesr2 knockout mice develop aortic valve disease with advancing age. Arterioscler Thromb Vasc Biol 2013; 33:e84-92. [PMID: 23288164 DOI: 10.1161/atvbaha.112.300573] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Acquired heart diseases, such as valve disease, are major causes of human morbidity and mortality. However, the pathological mechanisms underlying these diseases are largely unknown. Our aim is to identify the role of the hairy and enhancer of split-related (Hesr)-2 gene in the adult heart. METHODS AND RESULTS Echocardiography detected heart dysfunctions indicative of aortic valve anomalies, stenosis, and regurgitation, in ≈59% of >12-month-old Hesr2 knockout survivor mice. Morphological and histological analyses revealed thickened semilunar valves with increased fibrotic areas, indicating that sclerotic degeneration of valves is the main cause of aortic valve disease. The expression of osteogenic genes, such as osteopontin and sclerostin, were upregulated in the mutants, and the overexpression of sclerostin in endothelial cells resulted in thickened semilunar valves with increased fibrotic areas, similar to that seen in the Hesr2 knockout mice, suggesting that Hesr2 can regulate osteogenic gene expression in valves. Reduced left ventricular function, which may be caused by increased ventricular interstitial fibrosis, and enlarged myocardial cell size without ventricular wall thickening were found in both aortic valve stenosis/regurgitation-positive (33%) and aortic valve stenosis/regurgitation-negative (38%) subpopulations in 12-month-old survivor mice. Dilated left ventricular internal dimensions were specifically detected in the aortic valve stenosis/regurgitation-positive subpopulation, thus suggesting that the degeneration of cardiomyocytes is influenced by irregular hemodynamics. CONCLUSIONS These data revealed that survivor mice lacking the Hesr2 gene exhibit fibrosis in the aortic valve and ventricle in adulthood, thus suggesting that Hesr2 plays an important role in maintaining the homeostasis of the aortic valve and ventricle.
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Affiliation(s)
- Hiroki Kokubo
- Division of Mammalian Development, National Institute of Genetics, Shizuoka, Japan
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Affiliation(s)
- Jane A Leopold
- Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
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Sainger R, Grau JB, Branchetti E, Poggio P, Seefried WF, Field BC, Acker MA, Gorman RC, Gorman JH, Hargrove CW, Bavaria JE, Ferrari G. Human myxomatous mitral valve prolapse: role of bone morphogenetic protein 4 in valvular interstitial cell activation. J Cell Physiol 2012; 227:2595-604. [PMID: 22105615 DOI: 10.1002/jcp.22999] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Myxomatous mitral valve prolapse (MVP) is the most common cardiac valvular abnormality in industrialized countries and a leading cause of mitral valve surgery for isolated mitral regurgitation. The key role of valvular interstitial cells (VICs) during mitral valve development and homeostasis has been recently suggested, however little is known about the molecular pathways leading to MVP. We aim to characterize bone morphogenetic protein 4 (BMP4) as a cellular regulator of mitral VIC activation towards a pathologic synthetic phenotype and to analyze the cellular phenotypic changes and extracellular matrix (ECM) reorganization associated with the development of myxomatous MVP. Microarray analysis showed significant up regulation of BMP4-mediated signaling molecules in myxomatous MVP when compared to controls. Histological analysis and cellular characterization suggest that during myxomatous MVP development, healthy quiescent mitral VICs undergo a phenotypic activation via up regulation of BMP4-mediated pathway. In vitro hBMP4 treatment of isolated human mitral VICs mimics the cellular activation and ECM remodeling as seen in MVP tissues. The present study characterizes the cell biology of mitral VICs in physiological and pathological conditions and provides insights into the molecular and cellular mechanisms mediated by BMP4 during MVP. The ability to test and control the plasticity of VICs using different molecules may help in developing new diagnostic and therapeutic strategies for myxomatous MVP.
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Affiliation(s)
- Rachana Sainger
- Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania School of Medicine, Philadelphia, PA 19036, USA
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Wen C, Leiyang Z, Fei D, Yifan Z, Xiao R, Li L, Liang Z, Ganggang M, Zirun L, Xin C. Decreased and inactivated nuclear factor kappa B 1 (p50) in human degenerative calcified aortic valve. Cardiovasc Pathol 2012; 22:28-32. [PMID: 22464415 DOI: 10.1016/j.carpath.2012.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Revised: 02/22/2012] [Accepted: 02/27/2012] [Indexed: 10/28/2022] Open
Abstract
BACKGROUND Degenerative aortic valve calcification is an important factor in aortic stenosis and incompetence, but the pathogenesis is unclear. The purpose of the present study was to observe the expression of p50 in degenerative calcified aortic valves, which may provide a potential therapeutic target. METHODS Fifteen cases of degenerative calcified aortic valve constituted the experimental group, and 10 aortic valves from patients who had undergone the Bentall operation constituted the control group. RESULTS Immunostaining demonstrated that α-smooth muscle actin was highly expressed in valvular interstitial cells in the experimental group and that the percentage of CD68-positive cells was significantly higher in degenerative calcified aortic valves. Using bone gamma-carboxyglutamate protein as a marker of calcification showed that osteoblasts were significantly increased in the experimental valves. Western blot showed that p50 was more highly expressed and activated in the control group compared with the experimental group. Immunohistochemistry confirmed this finding and showed that p50 was principally localized to the endothelial cells of uncalcified valves, suggesting that it might play an important role in maintaining valve function. CONCLUSIONS Inhibition of p50 activity in endothelial cells might lead to calcification in degenerative calcified aortic valves.
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Affiliation(s)
- Chen Wen
- Department of Thoracic and Cardiovascular Surgery, Nanjing First Hospital Affiliated to Nanjing Medical University, 68 Changle Road, Nanjing, Jiangsu 210006, China
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Grau JB, Poggio P, Sainger R, Vernick WJ, Seefried WF, Branchetti E, Field BC, Bavaria JE, Acker MA, Ferrari G. Analysis of osteopontin levels for the identification of asymptomatic patients with calcific aortic valve disease. Ann Thorac Surg 2011; 93:79-86. [PMID: 22093695 DOI: 10.1016/j.athoracsur.2011.08.036] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 08/11/2011] [Accepted: 08/15/2011] [Indexed: 11/17/2022]
Abstract
BACKGROUND Calcific aortic valve disease (CAVD) is the most common cause of acquired valve disease. Initial phases of CAVD include thickening of the cusps, whereas advanced stages are associated with biomineralization and reduction of the aortic valve area. These conditions are known as aortic valve sclerosis (AVSc) and aortic valve stenosis (AVS), respectively. Because of its asymptomatic presentation, little is known about the molecular determinants of AVSc. The aim of this study was to correlate plasma and tissue osteopontin (OPN) levels with echocardiographic evaluation for the identification of asymptomatic patients at risk for CAVD. In addition, our aim was to analyze the differential expression and biological function of OPN splicing variants as biomarkers of early and late stages of CAVD. METHODS From January 2010 to February 2011, 310 patients were enrolled in the study. Patients were divided into 3 groups based on transesophageal echocardiographic (TEE) evaluation: controls (56 patients), AVSc (90 patients), and AVS (164 patients). Plasma and tissue OPN levels were measured by immunohistochemical evaluation, enzyme-linked immunosorbent assay (ELISA), and real-time quantitative polymerase chain reaction (qPCR). RESULTS Patients with AVSc and AVS have higher OPN levels compared with controls. OPN levels are elevated in asymptomatic patients with AVSc with no appearance of calcification during TEE evaluation. OPN splicing variants OPN-a, OPN-b, and OPN-c are differentially expressed during CAVD progression and are able to inhibit biomineralization in a cell-based biomineralization assay. CONCLUSIONS The analysis of the differential expression of OPN splicing variants during CAVD may help in developing diagnostic and risk stratification tools to follow the progression of asymptomatic aortic valve degeneration.
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Affiliation(s)
- Juan B Grau
- Department of Surgery, Division of Cardiovascular Surgery, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA
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