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Liu M, Liang W, Su Y, Wen Y, Qi J, Wang L, Su S, Zhao J, Shan J, Wang J. COL8A1 is a potential prognostic biomarker associated with migration, proliferation, and tumor microenvironment in glioma. Exp Cell Res 2024; 439:114076. [PMID: 38719174 DOI: 10.1016/j.yexcr.2024.114076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 05/02/2024] [Accepted: 05/04/2024] [Indexed: 05/13/2024]
Abstract
Glioblastoma (GBM) is a common primary central nervous system tumor. The molecular mechanisms of glioma are unknown, and the prognosis is poor. Therefore, exploring the underlying mechanisms and screening for new prognostic markers and therapeutic targets is crucial. We utilized the weighted gene co-expression network analysis (WGCNA), Differentially Expressed Genes (DEGs), and LASSO-COX analysis to identify three target genes. Next, we constructed and evaluated a prognostic model, screening out COL8A1 as a risk gene. Through a sequence of cellular functional experiments, in vivo studies, and RNA sequencing, we delved into exploring the functional effects and molecular mechanisms of COL8A1 on GBM cells. Finally, the correlation between COL8A1 and tumor immune cells and different inflammatory responses was analyzed. Immunohistochemistry experiments revealed the influence of COL8A1 on macrophage polarization. The COL8A1 expression level was associated with the grade, prognosis, and tumor microenvironment (TME) of glioma. Functional experiments showed that COL8A1 inhibited GBM cell apoptosis and promoted migration, invasion, and proliferation in vitro and in vivo. We also found that COL8A1 promotes the epithelial-mesenchymal transition process and may mediate the activation of the ERK pathway through SHC1. In addition, immune infiltration analysis showed that COL8A1 was closely associated with macrophages in glioma tissues, significantly suppressing the signaling of M1-like -type macrophages and enhancing the signaling of M2-like -type macrophages. COL8A1 was first found to be associated with prognosis, progression, and immune microenvironment of glioma and may serve as a new marker of prognosis and a therapeutic target.
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Affiliation(s)
- Mingkai Liu
- Department of Neurobiology, School of Medicine, South China University of Technology, Guangzhou, China
| | - Weiye Liang
- Department of Radiology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
| | - Yuling Su
- Center for Pancreatic Cancer Research, School of Medicine, South China University of Technology, Guangzhou, China
| | - Yulin Wen
- Center for Health Research, CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Jiaming Qi
- Center for Pancreatic Cancer Research, School of Medicine, South China University of Technology, Guangzhou, China
| | - Lili Wang
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shuquan Su
- Data Science Institute, School of Computer Science, Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, Australia
| | - Jie Zhao
- Department of Neurobiology, School of Medicine, South China University of Technology, Guangzhou, China
| | - Jiajie Shan
- Department of Neurobiology, School of Medicine, South China University of Technology, Guangzhou, China
| | - Jian Wang
- Department of Neurobiology, School of Medicine, South China University of Technology, Guangzhou, China.
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Rojas MG, Pereira-Simon S, Zigmond ZM, Varona Santos J, Perla M, Santos Falcon N, Stoyell-Conti FF, Salama A, Yang X, Long X, Duque JC, Salman LH, Tabbara M, Martinez L, Vazquez-Padron RI. Single-Cell Analyses Offer Insights into the Different Remodeling Programs of Arteries and Veins. Cells 2024; 13:793. [PMID: 38786017 PMCID: PMC11119253 DOI: 10.3390/cells13100793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/18/2024] [Accepted: 04/29/2024] [Indexed: 05/25/2024] Open
Abstract
Arteries and veins develop different types of occlusive diseases and respond differently to injury. The biological reasons for this discrepancy are not well understood, which is a limiting factor for the development of vein-targeted therapies. This study contrasts human peripheral arteries and veins at the single-cell level, with a focus on cell populations with remodeling potential. Upper arm arteries (brachial) and veins (basilic/cephalic) from 30 organ donors were compared using a combination of bulk and single-cell RNA sequencing, proteomics, flow cytometry, and histology. The cellular atlases of six arteries and veins demonstrated a 7.8× higher proportion of contractile smooth muscle cells (SMCs) in arteries and a trend toward more modulated SMCs. In contrast, veins showed a higher abundance of endothelial cells, pericytes, and macrophages, as well as an increasing trend in fibroblasts. Activated fibroblasts had similar proportions in both types of vessels but with significant differences in gene expression. Modulated SMCs and activated fibroblasts were characterized by the upregulation of MYH10, FN1, COL8A1, and ITGA10. Activated fibroblasts also expressed F2R, POSTN, and COMP and were confirmed by F2R/CD90 flow cytometry. Activated fibroblasts from veins were the top producers of collagens among all fibroblast populations from both types of vessels. Venous fibroblasts were also highly angiogenic, proinflammatory, and hyper-responders to reactive oxygen species. Differences in wall structure further explain the significant contribution of fibroblast populations to remodeling in veins. Fibroblasts are almost exclusively located outside the external elastic lamina in arteries, while widely distributed throughout the venous wall. In line with the above, ECM-targeted proteomics confirmed a higher abundance of fibrillar collagens in veins vs. more basement ECM components in arteries. The distinct cellular compositions and transcriptional programs of reparative populations in arteries and veins may explain differences in acute and chronic wall remodeling between vessels. This information may be relevant for the development of antistenotic therapies.
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Affiliation(s)
- Miguel G. Rojas
- Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (M.G.R.); (S.P.-S.); (J.V.S.); (A.S.)
| | - Simone Pereira-Simon
- Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (M.G.R.); (S.P.-S.); (J.V.S.); (A.S.)
| | | | - Javier Varona Santos
- Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (M.G.R.); (S.P.-S.); (J.V.S.); (A.S.)
| | - Mikael Perla
- Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (M.G.R.); (S.P.-S.); (J.V.S.); (A.S.)
| | - Nieves Santos Falcon
- Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (M.G.R.); (S.P.-S.); (J.V.S.); (A.S.)
| | - Filipe F. Stoyell-Conti
- Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (M.G.R.); (S.P.-S.); (J.V.S.); (A.S.)
| | - Alghidak Salama
- Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (M.G.R.); (S.P.-S.); (J.V.S.); (A.S.)
| | - Xiaofeng Yang
- Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
| | - Xiaochun Long
- Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Juan C. Duque
- Department of Medicine, Leonard M. Miller School of Medicine, University of Miami, Miami, FL 33136, USA
| | - Loay H. Salman
- Division of Nephrology and Hypertension, Albany Medical College, Albany, NY 12208, USA
| | - Marwan Tabbara
- Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (M.G.R.); (S.P.-S.); (J.V.S.); (A.S.)
| | - Laisel Martinez
- Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (M.G.R.); (S.P.-S.); (J.V.S.); (A.S.)
| | - Roberto I. Vazquez-Padron
- Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (M.G.R.); (S.P.-S.); (J.V.S.); (A.S.)
- Bruce W. Carter Veterans Affairs Medical Center, Miami, FL 33125, USA;
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He J, Gao Y, Yang C, Guo Y, Liu L, Lu S, He H. Navigating the landscape: Prospects and hurdles in targeting vascular smooth muscle cells for atherosclerosis diagnosis and therapy. J Control Release 2024; 366:261-281. [PMID: 38161032 DOI: 10.1016/j.jconrel.2023.12.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 12/02/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
Vascular smooth muscle cells (VSMCs) have emerged as pivotal contributors throughout all phases of atherosclerotic plaque development, effectively dispelling prior underestimations of their prevalence and significance. Recent lineage tracing studies have unveiled the clonal nature and remarkable adaptability inherent to VSMCs, thereby illuminating their intricate and multifaceted roles in the context of atherosclerosis. This comprehensive review provides an in-depth exploration of the intricate mechanisms and distinctive characteristics that define VSMCs across various physiological processes, firmly underscoring their paramount importance in shaping the course of atherosclerosis. Furthermore, this review offers a thorough examination of the significant strides made over the past two decades in advancing imaging techniques and therapeutic strategies with a precise focus on targeting VSMCs within atherosclerotic plaques, notably spotlighting meticulously engineered nanoparticles as a promising avenue. We envision the potential of VSMC-targeted nanoparticles, thoughtfully loaded with medications or combination therapies, to effectively mitigate pro-atherogenic VSMC processes. These advancements are poised to contribute significantly to the pivotal objective of modulating VSMC phenotypes and enhancing plaque stability. Moreover, our paper also delves into recent breakthroughs in VSMC-targeted imaging technologies, showcasing their remarkable precision in locating microcalcifications, dynamically monitoring plaque fibrous cap integrity, and assessing the therapeutic efficacy of medical interventions. Lastly, we conscientiously explore the opportunities and challenges inherent in this innovative approach, providing a holistic perspective on the potential of VSMC-targeted strategies in the evolving landscape of atherosclerosis research and treatment.
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Affiliation(s)
- Jianhua He
- School of Pharmacy, Research Center for Pharmaceutical Preparations, Hubei University of Chinese Medicine, Wuhan 430065, People's Republic of China.
| | - Yu Gao
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Can Yang
- School of Pharmacy, Research Center for Pharmaceutical Preparations, Hubei University of Chinese Medicine, Wuhan 430065, People's Republic of China
| | - Yujie Guo
- School of Pharmacy, Research Center for Pharmaceutical Preparations, Hubei University of Chinese Medicine, Wuhan 430065, People's Republic of China
| | - Lisha Liu
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
| | - Shan Lu
- School of Pharmacy, Research Center for Pharmaceutical Preparations, Hubei University of Chinese Medicine, Wuhan 430065, People's Republic of China.
| | - Hongliang He
- State Key Laboratory of Digital Medical Engineering, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Sciences & Medical Engineering, Southeast University, Nanjing 210009, People's Republic of China.
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Burke-Kleinman J, Rubianto J, Hou G, Santerre JP, Bendeck MP. Matrix-Binding, N-Cadherin-Targeting Chimeric Peptide Inhibits Intimal Thickening but Not Endothelial Repair in Balloon-Injured Carotid Arteries. Arterioscler Thromb Vasc Biol 2023; 43:1639-1652. [PMID: 37409527 PMCID: PMC10443629 DOI: 10.1161/atvbaha.123.319400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/27/2023] [Indexed: 07/07/2023]
Abstract
BACKGROUND Treatment of occluded vessels can involve angioplasty, stenting, and bypass grafting, which can be limited by restenosis and thrombosis. Drug-eluting stents attenuate restenosis, but the current drugs used are cytotoxic, causing smooth muscle cell (SMC) and endothelial cell (EC) death that may lead to late thrombosis. N-cadherin is a junctional protein expressed by SMCs, which promotes directional SMC migration contributing to restenosis. We propose that engaging N-cadherin with mimetic peptides can act as a cell type-selective therapeutic strategy to inhibit polarization and directional migration of SMCs without negatively impacting ECs. METHODS We designed a novel N-cadherin-targeting chimeric peptide with a histidine-alanine-valine cadherin-binding motif, combined with a fibronectin-binding motif from Staphylococcus aureus. This peptide was tested in SMC and EC culture assays of migration, viability, and apoptosis. Rat carotid arteries were balloon injured and treated with the N-cadherin peptide. RESULTS Treating scratch-wounded SMCs with the N-cadherin-targeting peptide inhibited migration and reduced polarization of wound-edge cells. The peptide colocalized with fibronectin. Importantly, EC junction, permeability, or migration was not impacted by peptide treatment in vitro. We also demonstrated that the chimeric peptide persisted for 24 hours after transient delivery in the balloon-injured rat carotid artery. Treatment with the N-cadherin-targeting chimeric peptide reduced intimal thickening in balloon-injured rat carotid arteries at 1 and 2 weeks after injury. Reendothelialization of injured vessels after 2 weeks was unimpaired by peptide treatment. CONCLUSIONS These studies show that an N-cadherin-binding and fibronectin-binding chimeric peptide is effective in inhibiting SMC migration in vitro and in vivo and limiting neointimal hyperplasia after balloon angioplasty without affecting EC repair. These results establish the potential of an advantageous SMC-selective strategy for antirestenosis therapy.
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Affiliation(s)
- Jonah Burke-Kleinman
- Department of Laboratory Medicine and Pathobiology, Temerty Faculty of Medicine (J.B.-K., G.H., M.P.B.), University of Toronto, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Canada (J.B.-K., J.R., G.H., J.P.S., M.P.B.)
| | - Jonathan Rubianto
- Institute of Biomedical Engineering (J.R., J.P.S.), University of Toronto, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Canada (J.B.-K., J.R., G.H., J.P.S., M.P.B.)
| | - Guangpei Hou
- Department of Laboratory Medicine and Pathobiology, Temerty Faculty of Medicine (J.B.-K., G.H., M.P.B.), University of Toronto, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Canada (J.B.-K., J.R., G.H., J.P.S., M.P.B.)
| | - J. Paul Santerre
- Institute of Biomedical Engineering (J.R., J.P.S.), University of Toronto, Canada
- Department of Chemical Engineering and Applied Chemistry, Faculty of Engineering (J.P.S.), University of Toronto, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Canada (J.B.-K., J.R., G.H., J.P.S., M.P.B.)
| | - Michelle P. Bendeck
- Department of Chemical Engineering and Applied Chemistry, Faculty of Engineering (J.P.S.), University of Toronto, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Canada (J.B.-K., J.R., G.H., J.P.S., M.P.B.)
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Martinez L, Rojas MG, Tabbara M, Pereira-Simon S, Santos Falcon N, Rauf MA, Challa A, Zigmond ZM, Griswold AJ, Duque JC, Lassance-Soares RM, Velazquez OC, Salman LH, Vazquez-Padron RI. The Transcriptomics of the Human Vein Transformation After Arteriovenous Fistula Anastomosis Uncovers Layer-Specific Remodeling and Hallmarks of Maturation Failure. Kidney Int Rep 2023; 8:837-850. [PMID: 37069981 PMCID: PMC10105062 DOI: 10.1016/j.ekir.2023.01.008] [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: 10/19/2022] [Revised: 12/15/2022] [Accepted: 01/09/2023] [Indexed: 01/19/2023] Open
Abstract
Introduction The molecular transformation of the human preaccess vein after arteriovenous fistula (AVF) creation is poorly understood. This limits our ability to design efficacious therapies to improve maturation outcomes. Methods Bulk RNA sequencing (RNA-seq) followed by paired bioinformatic analyses and validation assays were performed in 76 longitudinal vascular biopsies (veins and AVFs) from 38 patients with stage 5 chronic kidney disease or end-stage kidney disease undergoing surgeries for 2-stage AVF creation (19 matured, 19 failed). Results A total of 3637 transcripts were differentially expressed between veins and AVFs independent of maturation outcomes, with 80% upregulated in fistulas. The postoperative transcriptome demonstrated transcriptional activation of basement membrane and interstitial extracellular matrix (ECM) components, including preexisting and novel collagens, proteoglycans, hemostasis factors, and angiogenesis regulators. A postoperative intramural cytokine storm involved >80 chemokines, interleukins, and growth factors. Postoperative changes in ECM expression were differentially distributed in the AVF wall, with proteoglycans and fibrillar collagens predominantly found in the intima and media, respectively. Interestingly, upregulated matrisome genes were enough to make a crude separation of AVFs that failed from those with successful maturation. We identified 102 differentially expressed genes (DEGs) in association with AVF maturation failure, including upregulation of network collagen VIII in medial smooth muscle cells (SMCs) and downregulation of endothelial-predominant transcripts and ECM regulators. Conclusion This work delineates the molecular changes that characterize venous remodeling after AVF creation and those relevant to maturation failure. We provide an essential framework to streamline translational models and our search for antistenotic therapies.
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Affiliation(s)
- Laisel Martinez
- DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Miguel G. Rojas
- DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Marwan Tabbara
- DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Simone Pereira-Simon
- DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Nieves Santos Falcon
- DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Mohd Ahmar Rauf
- DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Akshara Challa
- DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
| | | | - Anthony J. Griswold
- John P. Hussman Institute for Human Genomics, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Juan C. Duque
- Katz Family Division of Nephrology, Department of Medicine, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Roberta M. Lassance-Soares
- DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Omaida C. Velazquez
- DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Loay H. Salman
- Division of Nephrology, Albany Medical College, Albany, New York, USA
| | - Roberto I. Vazquez-Padron
- DeWitt Daughtry Family Department of Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, Florida, USA
- Bruce W. Carter Veterans Affairs Medical Center, Miami, Florida, USA
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6
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Yan B, Liu L, Zhao L, Hinz U, Luo Y, An X, Gladkich J, de la Torre C, Huang Z, Schrapel D, Gross W, Fortunato F, Schaefer M, Gaida MM, Herr I. Tumor and stroma COL8A1 secretion induces autocrine and paracrine progression signaling in pancreatic ductal adenocarcinoma. Matrix Biol 2022; 114:84-107. [PMID: 36375776 DOI: 10.1016/j.matbio.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 11/09/2022] [Accepted: 11/09/2022] [Indexed: 11/13/2022]
Abstract
Several collagen subtypes are involved in pancreatic ductal adenocarcinoma (PDAC) desmoplasia, which constrains therapeutic efficacy. We evaluated collagen type VIII alpha 1 chain (COL8A1), whose function in PDAC is currently unknown. We identified COL8A1 expression in 7 examined PDAC cell lines by microarray analysis, western blotting, and RT‒qPCR. Higher COL8A1 expression occurred in 2 gemcitabine-resistant PDAC cell lines; pancreas tissue (n=15) from LSL-KrasG12D/+; p48-Cre mice with advanced PDAC predisposition; and PDAC parenchyma and stroma of a patient tissue microarray (n=82). Bioinformatic analysis confirmed higher COL8A1 expression in PDAC patient tissue available from TCGA (n=183), GTEx (n=167), and GEO (n=261) databases. siRNA or lentiviral sh-mediated COL8A1 inhibition in PDAC cells reduced migration, invasion and gemcitabine resistance and resulted in lower cytidine deaminase and thymidine kinase 2 expression and was rescued by COL8A1-secreting cancer-associated fibroblasts (CAFs). The activation of COL8A1 expression involved cJun/AP-1, as demonstrated by CHIP assay and siRNA inhibition. Downstream of COL8A1, activation of ITGB1 and DDR1 receptors and PI3K/AKT and NF-κB signaling occurred, as detected by expression, adhesion and EMSA binding studies. Orthotopic transplantation of PDAC cells with downregulated COL8A1 expression resulted in reduced tumor xenograft growth and lower gemcitabine resistance but was prevented by cotransplantation of COL8A1-secreting CAFs. Most importantly, COL8A1 expression in PDAC patient tissues from our clinic (n=84) correlated with clinicopathological data, and we confirmed these findings by the use of patient data (n=177) from the TCGA database. These findings highlight COL8A1 expression in tumor and stromal cells as a new biomarker for PDAC progression.
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Affiliation(s)
- Bin Yan
- Department of General, Visceral and Transplantation Surgery, Section Surgical Research, University of Heidelberg, Im Neuenheimer Feld 365, Heidelberg 69120, Germany
| | - Li Liu
- Department of General, Visceral and Transplantation Surgery, Section Surgical Research, University of Heidelberg, Im Neuenheimer Feld 365, Heidelberg 69120, Germany
| | - Lian Zhao
- Department of General, Visceral and Transplantation Surgery, Section Surgical Research, University of Heidelberg, Im Neuenheimer Feld 365, Heidelberg 69120, Germany
| | - Ulf Hinz
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
| | - Yiqiao Luo
- Department of General, Visceral and Transplantation Surgery, Section Surgical Research, University of Heidelberg, Im Neuenheimer Feld 365, Heidelberg 69120, Germany
| | - Xuefeng An
- Department of General, Visceral and Transplantation Surgery, Section Surgical Research, University of Heidelberg, Im Neuenheimer Feld 365, Heidelberg 69120, Germany
| | - Jury Gladkich
- Department of General, Visceral and Transplantation Surgery, Section Surgical Research, University of Heidelberg, Im Neuenheimer Feld 365, Heidelberg 69120, Germany
| | - Carolina de la Torre
- NGS Core Facility, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Zhenhua Huang
- Department of General, Visceral and Transplantation Surgery, Section Surgical Research, University of Heidelberg, Im Neuenheimer Feld 365, Heidelberg 69120, Germany
| | - Daniel Schrapel
- Department of General, Visceral and Transplantation Surgery, Section Surgical Research, University of Heidelberg, Im Neuenheimer Feld 365, Heidelberg 69120, Germany
| | - Wolfgang Gross
- Department of General, Visceral and Transplantation Surgery, Section Surgical Research, University of Heidelberg, Im Neuenheimer Feld 365, Heidelberg 69120, Germany
| | - Franco Fortunato
- Department of General, Visceral and Transplantation Surgery, Section Surgical Research, University of Heidelberg, Im Neuenheimer Feld 365, Heidelberg 69120, Germany
| | - Michael Schaefer
- Department of General, Visceral and Transplantation Surgery, Section Surgical Research, University of Heidelberg, Im Neuenheimer Feld 365, Heidelberg 69120, Germany
| | - Matthias M Gaida
- Institute of Pathology, University Medical Center Mainz, Johannes Gutenberg-University Mainz, Mainz, Germany; TRON-Translational Oncology at the University Medical Center of the Johannes Gutenberg University gGmbH, Mainz, Germany
| | - Ingrid Herr
- Department of General, Visceral and Transplantation Surgery, Section Surgical Research, University of Heidelberg, Im Neuenheimer Feld 365, Heidelberg 69120, Germany.
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Sato F, Sagara A, Tajima K, Miura S, Inaba K, Ando Y, Oku T, Murakami T, Kato Y, Yumoto T. COL8A1 facilitates the growth of triple-negative breast cancer via FAK/Src activation. Breast Cancer Res Treat 2022; 194:243-256. [PMID: 35624176 DOI: 10.1007/s10549-022-06635-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 04/18/2022] [Indexed: 11/29/2022]
Abstract
PURPOSE Triple-negative breast cancer (TNBC) is one of the most aggressive breast cancer subtypes, and treatment options are limited because of the lack of signature molecules and heterogeneous properties of cancer. COL8A1 expression is higher in breast cancer than in normal tissues and is strongly correlated with worse overall survival in patients with breast cancer. However, the biological function of COL8A1 on cancer progression is not fully understood. In this study, we investigated the biological function of COL8A1 on TNBC progression. METHODS COL8A1-deficient cells were generated using the CRISPR-Cas9 system. The tumor growth and metastasis of TNBC cells were evaluated using three-dimensional culture (3D) methods and xenograft mouse models. The activation of focal adhesion kinase (FAK)/Src by COL8A1 in TNBC cells was evaluated by immunoblotting. RESULTS COL8A1 expression was primarily distributed into TNBC cell lines. Further, relapse-free survival in TNBC patients with the MSL subtype was strongly associated with the COL8A1 expression. MDA-MB-231 and Hs578T cells, classified as the MSL subtype, strongly express COL8A1, and COL8A1 protein expression was induced by hypoxia in both cell lines. Loss of COL8A1 expression inhibited spheroid /tumor growth and metastasis in vitro and in vivo. Further, exogenous COL8A1 promoted TNBC growth via the FAK/Src activation. Finally, the spheroid growth of MDA-MB-231 and Hs578T cells was inhibited by defactinib, a FAK inhibitor, without cytotoxicity. CONCLUSION These results indicate that COL8A1-mediated FAK/Src activation produces a more aggressive phenotype in TNBC, and its target inhibition may be an efficacious treatment for TNBC.
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Affiliation(s)
- Fumiaki Sato
- Laboratory of Analytical Pathophysiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan.
| | - Atsunobu Sagara
- Laboratory of Analytical Pathophysiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Kaede Tajima
- Laboratory of Analytical Pathophysiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Shotaro Miura
- Laboratory of Analytical Pathophysiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Kenjiro Inaba
- Laboratory of Analytical Pathophysiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Yusuke Ando
- Laboratory of Clinical Pathology, Faculty of Pharmacy, Josai University, 1-1, Keyaki-dai, Sakado City, Saitama, 350-0295, Japan
| | - Teruaki Oku
- Department of Microbiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Takashi Murakami
- Department of Microbiology, Faculty of Medicine, Saitama Medical University, 38 Moro-Hongo, Moroyama, Iruma, Saitama, 350-0495, Japan
| | - Yoshinori Kato
- Laboratory of Biopharmaceutics and Analytical Science, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Tetsuro Yumoto
- Laboratory of Analytical Pathophysiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
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8
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Mohabeer AL, Kroetsch JT, McFadden M, Khosraviani N, Broekelmann TJ, Hou G, Zhang H, Zhou YQ, Wang M, Gramolini AO, Mecham RP, Heximer SP, Bolz SS, Bendeck MP. Deletion of type VIII collagen reduces blood pressure, increases carotid artery functional distensibility and promotes elastin deposition. Matrix Biol Plus 2021; 12:100085. [PMID: 34693248 PMCID: PMC8517381 DOI: 10.1016/j.mbplus.2021.100085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 09/14/2021] [Accepted: 09/21/2021] [Indexed: 11/19/2022] Open
Abstract
Arterial stiffening is a significant predictor of cardiovascular disease development and mortality. In elastic arteries, stiffening refers to the loss and fragmentation of elastic fibers, with a progressive increase in collagen fibers. Type VIII collagen (Col-8) is highly expressed developmentally, and then once again dramatically upregulated in aged and diseased vessels characterized by arterial stiffening. Yet its biophysical impact on the vessel wall remains unknown. The purpose of this study was to test the hypothesis that Col-8 functions as a matrix scaffold to maintain vessel integrity during extracellular matrix (ECM) development. These changes are predicted to persist into the adult vasculature, and we have tested this in our investigation. Through our in vivo and in vitro studies, we have determined a novel interaction between Col-8 and elastin. Mice deficient in Col-8 (Col8-/-) had reduced baseline blood pressure and increased arterial compliance, indicating an enhanced Windkessel effect in conducting arteries. Differences in both the ECM composition and VSMC activity resulted in Col8-/- carotid arteries that displayed increased crosslinked elastin and functional distensibility, but enhanced catecholamine-induced VSMC contractility. In vitro studies revealed that the absence of Col-8 dramatically increased tropoelastin mRNA and elastic fiber deposition in the ECM, which was decreased with exogenous Col-8 treatment. These findings suggest a causative role for Col-8 in reducing mRNA levels of tropoelastin and the presence of elastic fibers in the matrix. Moreover, we also found that Col-8 and elastin have opposing effects on VSMC phenotype, the former promoting a synthetic phenotype, whereas the latter confers quiescence. These studies further our understanding of Col-8 function and open a promising new area of investigation related to elastin biology.
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Affiliation(s)
- Amanda L. Mohabeer
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario, Canada
| | - Jeffrey T. Kroetsch
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario, Canada
- Toronto Centre for Microvascular Medicine at TBEP, University of Toronto, Toronto, Ontario, Canada
| | - Meghan McFadden
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario, Canada
| | - Negin Khosraviani
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario, Canada
| | - Thomas J. Broekelmann
- Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Guangpei Hou
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario, Canada
| | - Hangjun Zhang
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario, Canada
| | - Yu-Qing Zhou
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario, Canada
| | - Minyao Wang
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario, Canada
| | - Anthony O. Gramolini
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario, Canada
| | - Robert P. Mecham
- Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Scott P. Heximer
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario, Canada
| | - Steffen-Sebastian Bolz
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario, Canada
- Toronto Centre for Microvascular Medicine at TBEP, University of Toronto, Toronto, Ontario, Canada
| | - Michelle P. Bendeck
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario, Canada
- Corresponding author at: TBEP, University of Toronto, 661 University Ave, Rm. 1432, Toronto, ON M5G 1M1, Canada.
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9
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Altered Vascular Extracellular Matrix in the Pathogenesis of Atherosclerosis. J Cardiovasc Transl Res 2021; 14:647-660. [PMID: 33420681 DOI: 10.1007/s12265-020-10091-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 12/01/2020] [Indexed: 12/18/2022]
Abstract
Cardiovascular disease continues to grow as a massive global health burden, with coronary artery disease being one of its most lethal varieties. The pathogenesis of atherosclerosis induces changes in the blood vessel and its extracellular matrix (ECM) in each vascular layer. The alteration of the ECM homeostasis has significant modulatory effects on the inflammatory response, the proliferation and migration of vascular smooth muscle cells, neointimal formation, and vascular fibrosis seen in atherosclerosis. In this literature review, the role of the ECM, the multitude of components, and alterations to these components in the pathogenesis of atherosclerosis are discussed with a focus on versatile cellular phenotypes in the structure of blood vessel. An understanding of the various effects of ECM alterations opens up a plethora of therapeutic options that would mitigate the substantial health toll of atherosclerosis on the global population.
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10
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Watson MG, Byrne HM, Macaskill C, Myerscough MR. A multiphase model of growth factor-regulated atherosclerotic cap formation. J Math Biol 2020; 81:725-767. [PMID: 32728827 DOI: 10.1007/s00285-020-01526-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 05/13/2020] [Indexed: 12/17/2022]
Abstract
Atherosclerosis is characterised by the growth of fatty plaques in the inner artery wall. In mature plaques, vascular smooth muscle cells (SMCs) are recruited from adjacent tissue to deposit a collagenous cap over the fatty plaque core. This cap isolates the thrombogenic plaque content from the bloodstream and prevents the clotting cascade that leads to myocardial infarction or stroke. Despite the protective role of the cap, the mechanisms that regulate cap formation and maintenance are not well understood. It remains unclear why some caps become stable, while others become vulnerable to rupture. We develop a multiphase PDE model with non-standard boundary conditions to investigate collagen cap formation by SMCs in response to diffusible growth factor signals from the endothelium. Platelet-derived growth factor stimulates SMC migration, proliferation and collagen degradation, while transforming growth factor (TGF)-[Formula: see text] stimulates SMC collagen synthesis and inhibits collagen degradation. The model SMCs respond haptotactically to gradients in the collagen phase and have reduced rates of migration and proliferation in dense collagenous tissue. The model, which is parameterised using in vivo and in vitro experimental data, reproduces several observations from plaque growth in mice. Numerical and analytical results demonstrate that a stable cap can be formed by a relatively small SMC population and emphasise the critical role of TGF-[Formula: see text] in effective cap formation. These findings provide unique insight into the mechanisms that may lead to plaque destabilisation and rupture. This work represents an important step towards the development of a comprehensive in silico plaque model.
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Affiliation(s)
- Michael G Watson
- School of Mathematics and Statistics, University of Sydney, Sydney, Australia.
| | - Helen M Byrne
- Wolfson Centre for Mathematical Biology, Mathematical Institute, University of Oxford, Oxford, UK
| | - Charlie Macaskill
- School of Mathematics and Statistics, University of Sydney, Sydney, Australia
| | - Mary R Myerscough
- School of Mathematics and Statistics, University of Sydney, Sydney, Australia
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11
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Moreno-Ajona D, Irimia P, Rodríguez JA, García-Velloso MJ, López-Fidalgo J, Fernández-Alonso L, Grochowitz L, Muñoz R, Domínguez P, Gállego-Culleré J, Martínez-Vila E. Elevated circulating metalloproteinase 7 predicts recurrent cardiovascular events in patients with carotid stenosis: a prospective cohort study. BMC Cardiovasc Disord 2020; 20:93. [PMID: 32101136 PMCID: PMC7045396 DOI: 10.1186/s12872-020-01387-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 02/10/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Major adverse cardiovascular events are the main cause of morbidity and mortality over the long term in patients undergoing carotid endarterectomy. There are few reports assessing the prognostic value of markers of inflammation in relation to the risk of cardiovascular disease after carotid endarterectomy. Here, we aimed to determine whether matrix metalloproteinases (MMP-1, MMP-2, MMP-7, MMP-9 and MMP-10), tissue inhibitor of MMPs (TIMP-1) and in vivo inflammation studied by 18F-FDG-PET/CT predict recurrent cardiovascular events in patients with carotid stenosis who underwent endarterectomy. METHODS This prospective cohort study was carried out on 31 consecutive patients with symptomatic (23/31) or asymptomatic (8/31) severe (> 70%) carotid stenosis who were scheduled for carotid endarterectomy between July 2013 and March 2016. In addition, 26 healthy controls were included in the study. Plasma and serum samples were collected 2 days prior to surgery and tested for MMP-1, MMP-2, MMP-7, MMP-9, MMP-10, TIMP-1, high-density lipoprotein, low-density lipoprotein, high-sensitivity C-reactive protein and erythrocyte sedimentation rate. 18F-FDG-PET/CT focusing on several territories' vascular wall metabolism was performed on 29 of the patients because of no presurgical availability in 2 symptomatic patients. Histological and immunohistochemical studies were performed with antibodies targeting MMP-10, MMP-9, TIMP-1 and CD68. RESULTS The patients with carotid stenosis had significantly more circulating MMP-1, MMP-7 and MMP-10 than the healthy controls. Intraplaque TIMP-1 was correlated with its plasma level (r = 0.42 P = .02) and with 18F-FDG uptake (r = 0.38 P = .05). We did not find any correlation between circulating MMPs and in vivo carotid plaque metabolism assessed by 18F-FDG-PET. After a median follow-up of 1077 days, 4 cerebrovascular, 7 cardiovascular and 11 peripheral vascular events requiring hospitalization were registered. Circulating MMP-7 was capable of predicting events over and above the traditional risk factors (HR = 1.15 P = .006). When the model was associated with the variables of interest, the risk predicted by 18F-FDG-PET was not significant. CONCLUSIONS Circulating MMP-7 may represent a novel marker for recurrent cardiovascular events in patients with moderate to severe carotid stenosis. MMP-7 may reflect the atherosclerotic burden but not plaque inflammation in this specific vascular territory.
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Affiliation(s)
- David Moreno-Ajona
- Department of Neurology, Clínica Universidad de Navarra, Av. Pío XII 36, 31008, Pamplona, Navarra, Spain
| | - Pablo Irimia
- Department of Neurology, Clínica Universidad de Navarra, Av. Pío XII 36, 31008, Pamplona, Navarra, Spain. .,Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain. .,Red de Investigación Cooperativa de Enfermedades Vasculares Cerebrales (INVICTUS PLUS), Madrid, Spain.
| | - José Antonio Rodríguez
- Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain.,Laboratory of Atherothrombosis, Program of Cardiovascular Diseases, CIMA-Universidad de Navarra, 31008, Pamplona, Spain.,CIBERCV, Madrid, Spain
| | - María José García-Velloso
- Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain.,Department of Nuclear Medicine, Clínica Universidad de Navarra, 31008, Pamplona, Spain
| | | | - Leopoldo Fernández-Alonso
- Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain.,Department of Vascular Surgery, Complejo Hospitalario de Navarra, 31008, Pamplona, Spain
| | - Lukasz Grochowitz
- Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain.,Department of Vascular Surgery, Clínica Universidad de Navarra, 31008, Pamplona, Spain
| | - Roberto Muñoz
- Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain.,Red de Investigación Cooperativa de Enfermedades Vasculares Cerebrales (INVICTUS PLUS), Madrid, Spain.,Department of Neurology, Complejo Hospitalario de Navarra, 31008, Pamplona, Spain
| | - Pablo Domínguez
- Department of Radiology, Clínica Universidad de Navarra, 31008, Pamplona, Spain
| | - Jaime Gállego-Culleré
- Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain.,Red de Investigación Cooperativa de Enfermedades Vasculares Cerebrales (INVICTUS PLUS), Madrid, Spain.,Department of Neurology, Complejo Hospitalario de Navarra, 31008, Pamplona, Spain
| | - Eduardo Martínez-Vila
- Department of Neurology, Clínica Universidad de Navarra, Av. Pío XII 36, 31008, Pamplona, Navarra, Spain.,Instituto de Investigación Sanitaria de Navarra (IDISNA), Pamplona, Spain.,Red de Investigación Cooperativa de Enfermedades Vasculares Cerebrales (INVICTUS PLUS), Madrid, Spain
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12
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Wadey K, Lopes J, Bendeck M, George S. Role of smooth muscle cells in coronary artery bypass grafting failure. Cardiovasc Res 2019; 114:601-610. [PMID: 29373656 DOI: 10.1093/cvr/cvy021] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 01/22/2018] [Indexed: 01/30/2023] Open
Abstract
Atherosclerosis is the underlying pathology of many cardiovascular diseases. The formation and rupture of atherosclerotic plaques in the coronary arteries results in angina and myocardial infarction. Venous coronary artery bypass grafts are designed to reduce the consequences of atherosclerosis in the coronary arteries by diverting blood flow around the atherosclerotic plaques. However, vein grafts suffer a high failure rate due to intimal thickening that occurs as a result of vascular cell injury and activation and can act as 'a soil' for subsequent atherosclerotic plaque formation. A clinically-proven method for the reduction of vein graft intimal thickening and subsequent major adverse clinical events is currently not available. Consequently, a greater understanding of the underlying mechanisms of intimal thickening may be beneficial for the design of future therapies for vein graft failure. Vein grafting induces inflammation and endothelial cell damage and dysfunction, that promotes vascular smooth muscle cell (VSMC) migration, and proliferation. Injury to the wall of the vein as a result of grafting leads to the production of chemoattractants, remodelling of the extracellular matrix and cell-cell contacts; which all contribute to the induction of VSMC migration and proliferation. This review focuses on the role of altered behaviour of VSMCs in the vein graft and some of the factors which critically lead to intimal thickening that pre-disposes the vein graft to further atherosclerosis and re-occurrence of symptoms in the patient.
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Affiliation(s)
- Kerry Wadey
- Bristol Medical School, Research Floor Level 7, Bristol Royal Infirmary, Bristol BS2 8HW, UK
| | - Joshua Lopes
- Translational Biology and Engineering Program, University of Toronto, Toronto, ON M5G 1M1, Canada
| | - Michelle Bendeck
- Translational Biology and Engineering Program, University of Toronto, Toronto, ON M5G 1M1, Canada
| | - Sarah George
- Bristol Medical School, Research Floor Level 7, Bristol Royal Infirmary, Bristol BS2 8HW, UK
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13
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A comprehensive characterisation of large-scale expanded human bone marrow and umbilical cord mesenchymal stem cells. Stem Cell Res Ther 2019; 10:99. [PMID: 30885254 PMCID: PMC6421680 DOI: 10.1186/s13287-019-1202-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 02/28/2019] [Accepted: 03/01/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The manufacture of mesenchymal stem/stromal cells (MSCs) for clinical use needs to be cost effective, safe and scaled up. Current methods of expansion on tissue culture plastic are labour-intensive and involve several 'open' procedures. We have used the closed Quantum® hollow fibre bioreactor to expand four cultures each of MSCs derived from bone marrow (BM) and, for the first time, umbilical cords (UCs) and assessed extensive characterisation profiles for each, compared to parallel cultures grown on tissue culture plastic. METHODS Bone marrow aspirate was directly loaded into the Quantum®, and cells were harvested and characterised at passage (P) 0. Bone marrow cells were re-seeded into the Quantum®, harvested and further characterised at P1. UC-MSCs were isolated enzymatically and cultured once on tissue culture plastic, before loading cells into the Quantum®, harvesting and characterising at P1. Quantum®-derived cultures were phenotyped in terms of immunoprofile, tri-lineage differentiation, response to inflammatory stimulus and telomere length, as were parallel cultures expanded on tissue culture plastic. RESULTS Bone marrow cell harvests from the Quantum® were 23.1 ± 16.2 × 106 in 14 ± 2 days (P0) and 131 ± 84 × 106 BM-MSCs in 13 ± 1 days (P1), whereas UC-MSC harvests from the Quantum® were 168 ± 52 × 106 UC-MSCs after 7 ± 2 days (P1). Quantum®- and tissue culture plastic-expanded cultures at P1 adhered to criteria for MSCs in terms of cell surface markers, multipotency and plastic adherence, whereas the integrins, CD29, CD49c and CD51/61, were found to be elevated on Quantum®-expanded BM-MSCs. Rapid culture expansion in the Quantum® did not cause shortened telomeres when compared to cultures on tissue culture plastic. Immunomodulatory gene expression was variable between donors but showed that all MSCs upregulated indoleamine 2, 3-dioxygenase (IDO). CONCLUSIONS The results presented here demonstrate that the Quantum® can be used to expand large numbers of MSCs from bone marrow and umbilical cord tissues for next-generation large-scale manufacturing, without impacting on many of the properties that are characteristic of MSCs or potentially therapeutic. Using the Quantum®, we can obtain multiple MSC doses from a single manufacturing run to treat many patients. Together, our findings support the development of cheaper cell-based treatments.
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14
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Willumsen N, Jorgensen LN, Karsdal MA. Vastatin (the NC1 domain of human type VIII collagen a1 chain) is linked to stromal reactivity and elevated in serum from patients with colorectal cancer. Cancer Biol Ther 2019; 20:692-699. [PMID: 30626261 DOI: 10.1080/15384047.2018.1550571] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Vastatin, a fragment derived from type VIII collagen, is one of the least studied collagen-derived matrikines. Vastatin can be detected in serum but little is known regarding the relevance of serum vastatin in colorectal cancer (CRC). In this study, serum vastatin was measured (ELISA) in 67 healthy controls and 48 CRC patients prior to resection and compared to clinicopathological parameters and serum biomarkers of stromal reactivity (C3M, VICM). Impact of resection and chemotherapy were evaluated by comparing baseline values with a 3-month follow-up sample (n = 23). Serum vastatin was detectable in 114 of 115 subjects. At baseline vastatin was elevated in CRC compared to controls (P < 0.001) with a diagnostic accuracy (AUROC) of 0.865, p < 0.0001. Vastatin correlated with age in controls but not in patients with CRC; no association was seen with clinicopathological parameters. Vastatin was independently associated with C3M (stepwise linear regression coefficient 0.25, p = 0.046). Overall, no difference was seen in vastatin levels between baseline and follow-up. In conclusion, vastatin is elevated in serum from patients with CRC and correlate with interstitial matrix degradation (C3M). This indicates that vastatin is linked to stromal reactivity and suggests that vastatin has biomarker potential in CRC. The association with clinicopathological parameters and treatment effect needs further evaluation.
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Affiliation(s)
- Nicholas Willumsen
- a Biomarkers & Research , Nordic Bioscience, Biomarkers and Research , Herlev , Denmark
| | - Lars Nannestad Jorgensen
- b Digestive Disease Center, Bispebjerg Hospital , University of Copenhagen , Copenhagen , Denmark
| | - Morten Asser Karsdal
- a Biomarkers & Research , Nordic Bioscience, Biomarkers and Research , Herlev , Denmark
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15
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Marchand M, Monnot C, Muller L, Germain S. Extracellular matrix scaffolding in angiogenesis and capillary homeostasis. Semin Cell Dev Biol 2018; 89:147-156. [PMID: 30165150 DOI: 10.1016/j.semcdb.2018.08.007] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 07/31/2018] [Accepted: 08/14/2018] [Indexed: 01/03/2023]
Abstract
The extracellular matrix (ECM) of blood vessels, which is composed of both the vascular basement membrane (BM) and the interstitial ECM is identified as a crucial component of the vasculature. We here focus on the unique molecular composition and scaffolding of the capillary ECM, which provides structural support to blood vessels and regulates properties of endothelial cells and pericytes. The major components of the BM are collagen IV, laminins, heparan sulfate proteoglycans and nidogen and also associated proteins such as collagen XVIII and fibronectin. Their organization and scaffolding in the BM is required for proper capillary morphogenesis and maintenance of vascular homeostasis. The BM also regulates vascular mechanosensing. A better understanding of the mechanical and structural properties of the vascular BM and interstitial ECM therefore opens new perspectives to control physiological and pathological angiogenesis and vascular homeostasis. The overall aim of this review is to explain how ECM scaffolding influences angiogenesis and capillary integrity.
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Affiliation(s)
- Marion Marchand
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, PSL Research University, 11 Place Marcelin Berthelot, 75005, Paris, France; Sorbonne Université, Collège Doctoral, F-75005 Paris, France
| | - Catherine Monnot
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, PSL Research University, 11 Place Marcelin Berthelot, 75005, Paris, France
| | - Laurent Muller
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, PSL Research University, 11 Place Marcelin Berthelot, 75005, Paris, France
| | - Stéphane Germain
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, PSL Research University, 11 Place Marcelin Berthelot, 75005, Paris, France.
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16
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Shang J, Wang F, Chen P, Wang X, Ding F, Liu S, Zhao Q. Co-expression Network Analysis Identified COL8A1 Is Associated with the Progression and Prognosis in Human Colon Adenocarcinoma. Dig Dis Sci 2018; 63:1219-1228. [PMID: 29497907 DOI: 10.1007/s10620-018-4996-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 02/22/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUNDS AND AIMS Human colon adenocarcinoma is one of the major causes of tumor-induced death worldwide. A complicated gene interconnection network significantly regulates its progression and prognosis. The aim of our study was to find hub genes associated with the progression and prognosis of colon adenocarcinoma and to illustrate the underlying mechanisms. METHODS A weighted gene co-expression network analysis was performed in our study to identify significant gene modules and hub genes associated with the TNM stage of colon adenocarcinoma (n = 441). RESULTS In the turquoise module of interest, 23 hub genes were initially selected, and 10 of them were identified as "real" hub genes with high connectivity in the protein-protein interaction network. In the terms of validation, COL8A1 had the highest correlation with clinical traits among all of the hub genes. Data obtained from the Oncomine and GEPIA databases showed a higher expression of COL8A1 in colon adenocarcinoma tissues compared with normal colon tissues. Kaplan-Meier survival curves showed that higher expression of COL8A1 resulted in a shorter overall survival time and disease-free survival time. Univariate and multivariate Cox proportional hazards analyses indicated that the COL8A1 expression was an independent prognostic factor for survival in colon adenocarcinoma patients. Finally, gene set enrichment analysis indicated that the gene sets associated with focal adhesion were significantly enriched in colon adenocarcinoma samples with COL8A1 highly expressed. CONCLUSIONS COL8A1 was identified and proved to be correlated with the progression and prognosis of human colon adenocarcinoma, probably through regulating focal adhesion-related pathways.
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Affiliation(s)
- Jian Shang
- Department of Gastroenterology/Hepatology, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China.,The Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Diseases, Wuhan, 430071, People's Republic of China
| | - Fan Wang
- Department of Gastroenterology/Hepatology, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China.,The Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Diseases, Wuhan, 430071, People's Republic of China
| | - Pengfei Chen
- Department of Gastroenterology/Hepatology, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China.,The Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Diseases, Wuhan, 430071, People's Republic of China
| | - Xiaobing Wang
- Department of Gastroenterology/Hepatology, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China.,The Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Diseases, Wuhan, 430071, People's Republic of China
| | - Feng Ding
- Department of Gastroenterology/Hepatology, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China.,The Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Diseases, Wuhan, 430071, People's Republic of China
| | - Shi Liu
- Department of Gastroenterology/Hepatology, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China.,The Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Diseases, Wuhan, 430071, People's Republic of China
| | - Qiu Zhao
- Department of Gastroenterology/Hepatology, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan, 430071, People's Republic of China. .,The Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Diseases, Wuhan, 430071, People's Republic of China.
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17
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Integrin signaling in atherosclerosis. Cell Mol Life Sci 2017; 74:2263-2282. [PMID: 28246700 DOI: 10.1007/s00018-017-2490-4] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 01/24/2017] [Accepted: 02/15/2017] [Indexed: 02/07/2023]
Abstract
Atherosclerosis, a chronic lipid-driven inflammatory disease affecting large arteries, represents the primary cause of cardiovascular disease in the world. The local remodeling of the vessel intima during atherosclerosis involves the modulation of vascular cell phenotype, alteration of cell migration and proliferation, and propagation of local extracellular matrix remodeling. All of these responses represent targets of the integrin family of cell adhesion receptors. As such, alterations in integrin signaling affect multiple aspects of atherosclerosis, from the earliest induction of inflammation to the development of advanced fibrotic plaques. Integrin signaling has been shown to regulate endothelial phenotype, facilitate leukocyte homing, affect leukocyte function, and drive smooth muscle fibroproliferative remodeling. In addition, integrin signaling in platelets contributes to the thrombotic complications that typically drive the clinical manifestation of cardiovascular disease. In this review, we examine the current literature on integrin regulation of atherosclerotic plaque development and the suitability of integrins as potential therapeutic targets to limit cardiovascular disease and its complications.
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18
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New Altered Non-Fibrillar Collagens in Human Dilated Cardiomyopathy: Role in the Remodeling Process. PLoS One 2016; 11:e0168130. [PMID: 27936202 PMCID: PMC5148085 DOI: 10.1371/journal.pone.0168130] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 11/24/2016] [Indexed: 01/12/2023] Open
Abstract
Background In dilated cardiomyopathy (DCM), cardiac failure is accompanied by profound alterations of extracellular matrix associated with the progression of cardiac dilation and left ventricular (LV) dysfunction. Recently, we reported alterations of non-fibrillar collagen expression in ischemic cardiomyopathy linked to fibrosis and cardiac remodeling. We suspect that expression changes in genes coding for non-fibrillar collagens may have a potential role in DCM development. Objectives This study sought to analyze changes in the expression profile of non-fibrillar collagen genes in patients with DCM and to examine relationships between cardiac remodeling parameters and the expression levels of these genes. Methods and Results Twenty-three human left ventricle tissue samples were obtained from DCM patients (n = 13) undergoing heart transplantation and control donors (n = 10) for RNA sequencing analysis. We found increased mRNA levels of six non-fibrillar collagen genes, such as COL4A5, COL9A1, COL21A1, and COL23A1 (P < 0.05 for all), not previously described in DCM. Protein levels of COL8A1 and COL16A1 (P < 0.05 for both), were correspondingly increased. We also identified TGF-β1 significantly upregulated and related to both COL8A1 and COL16A1. Interestingly, we found a significant relationship between LV mass index and the gene expression level of COL8A1 (r = 0.653, P < 0.05). Conclusions In our research, we identified new non-fibrillar collagens with altered expression in DCM, being COL8A1 overexpression directly related to LV mass index, suggesting that they may be involved in the progression of cardiac dilation and remodeling.
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Lu YY, Lin YK, Kao YH, Chung CC, Yeh YH, Chen SA, Chen YJ. Collagen regulates transforming growth factor-β receptors of HL-1 cardiomyocytes through activation of stretch and integrin signaling. Mol Med Rep 2016; 14:3429-36. [PMID: 27573189 DOI: 10.3892/mmr.2016.5635] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Accepted: 07/13/2016] [Indexed: 11/06/2022] Open
Abstract
The extracellular matrix (ECM) and transforming growth factor-β (TGF)-β are important in cardiac fibrosis, however, the effects of the ECM on TGF‑β signaling remain to be fully elucidated. The aims of the present study were to evaluate the role of collagen in TGF‑β signaling and examine the underlying mechanisms. In the present study, western blot analysis was used to examine TGF‑β signaling in HL‑1 cells treated with and without (control) type I collagen (10 µg/ml), which was co‑administered with either an anti‑β1 integrin antibody (10 µg/ml) or a stretch‑activated channel inhibitor (gadolinium; 50 µM). Cell proliferation and adhesion assays were used to investigate the roles of integrin, mechanical stretch and mitogen‑activated protein kinases (MAPKs) on cell proliferation and adhesion. The type I collagen (10 µg/ml)‑treated HL‑1 cells were incubated with or without anti‑β1 integrin antibody (10 µg/ml), gadolinium (50 µM) or inhibitors of p38 (SB203580; 3 µM), extracellular signal‑regulated kinase (ERK; PD98059; 50 µM) and c‑Jun N‑terminal kinase (JNK; SP600125; 50 µM). Compared with the control cells, the collagen‑treated HL‑1 cells had lower expression levels of type I and type II TGF‑β receptors (TGFβRI and TGFβRII), with an increase in phosphorylated focal adhesion kinase (FAK), p38 and ERK1/2, and a decrease in JNK. Incubation with the anti‑β1 integrin antibody reversed the collagen‑induced downregulation of the expression of TGFβRII and phosphorylated FAK. Gadolinium downregulated the expression levels of TGFβRI and small mothers against decapentaplegic (Smad)2/3, and decreased the levels of phosphorylated p38, ERK1/2 and JNK. In addition, gadolinium reversed the collagen‑induced activation of p38 and ERK1/2. In the presence of gadolinium and anti‑β1 integrin antibody, collagen regulated the expression levels of TGFβRI, TGFβRII and Smad2/3, but did not alter the phosphorylation of p38, ERK1/2 or JNK. In addition, collagen increased cell proliferation and adhesion, and this collagen‑induced cell proliferation was inhibited by the anti‑β1 integrin antibody and ERK inhibitor. Taken together, the data obtained suggested that collagen differentially regulated the expression levels of TGFβRI and TGFβRII, and modulated the phosphorylation of MAPKs through integrin‑ or stretch‑dependent and ‑independent signaling pathways.
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Affiliation(s)
- Yen-Yu Lu
- Division of Cardiology, Department of Internal Medicine, Sijhih Cathay General Hospital, New Taipei City 221, Taiwan, R.O.C
| | - Yung-Kuo Lin
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan, R.O.C
| | - Yu-Hsun Kao
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan, R.O.C
| | - Cheng-Chih Chung
- Division of Cardiovascular Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 116, Taiwan, R.O.C
| | - Yung-Hsin Yeh
- Cardiovascular Division, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Tao‑Yuan 333, Taiwan, R.O.C
| | - Shih-Ann Chen
- School of Medicine, National Yang-Ming University, Taipei 112, Taiwan, R.O.C
| | - Yi-Jen Chen
- Division of Cardiovascular Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 116, Taiwan, R.O.C
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Zhou M, Xu H, Liu W, Liu H. Rosiglitazone modulates collagen deposition and metabolism in atherosclerotic plaques of fat-fed ApoE-knockout mice. Exp Ther Med 2015; 10:1265-1270. [PMID: 26622476 PMCID: PMC4578073 DOI: 10.3892/etm.2015.2711] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Accepted: 06/16/2015] [Indexed: 01/16/2023] Open
Abstract
Abnormal collagen deposition, as well as collagen metabolism, plays a crucial role in the formation and progression of vulnerable atherosclerotic plaques (VAPs), which are susceptible to rupture. According to our previous findings, rosiglitazone, a thiazolidinedione, can promote the stability of atherosclerotic plaques in fat-fed ApoE-knockout mice; however, it is unknown whether it can modulate collagen deposition and metabolism in VAPs. The present study was designed to determine the effect of rosiglitazone on collagen deposition and metabolism in the plaques of fat-fed ApoE-knockout mice. Following 13 weeks of the high-fat diet, the mice were randomized into three groups (10 mice/group) and intragastrically administered rosiglitazone, simvastatin and distilled water, respectively, for a further 13 weeks. The category of the collagen present in the plaques was evaluated using the picro-Sirius red polarization method. Additionally, the protein expression of matrix metalloproteinase 9 (MMP-9) and tissue inhibitor of metalloproteinase-1 (TIMP-1) in the plaques was determined using immunohistochemistry. The results showed that rosiglitazone reduced the lipid to collagen and type III to type I collagen ratios in the plaques, and these reductions were correlated with the reduction in the plaque MMP-9 to TIMP-1 ratio. These results suggest that rosiglitazone can modulate collagen deposition and metabolism and promote the stabilization of VAPs.
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Affiliation(s)
- Mingxue Zhou
- Beijing Institute of Traditional Chinese Medicine, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing 100010, P.R. China
| | - Hao Xu
- Department of Cardiovascular Medicine, Xiyuan Hospital, Academy of Chinese Medical Sciences, Beijing 100091, P.R. China
| | - Weihong Liu
- Beijing Institute of Traditional Chinese Medicine, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing 100010, P.R. China
| | - Hongxu Liu
- Department of Cardiovascular Medicine, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing 100010, P.R. China
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de Pizzol Júnior JP, Sasso-Cerri E, Cerri PS. Apoptosis and reduced microvascular density of the lamina propria during tooth eruption in rats. J Anat 2015; 227:487-96. [PMID: 26228092 DOI: 10.1111/joa.12359] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/24/2015] [Indexed: 12/12/2022] Open
Abstract
During tooth eruption, structural and functional changes must occur in the lamina propria to establish the eruptive pathway. In this study, we evaluate the structural changes that occur during lamina propria degradation and focus these efforts on apoptosis and microvascular density. Fragments of maxilla containing the first molars from 9-, 11-, 13- and 16-day-old rats were fixed, decalcified and embedded in paraffin. The immunohistochemical detection of vascular endothelial growth factor (VEGF), caspase-3 and MAC387 (macrophage marker), and the TUNEL method were applied to the histological molar sections. The numerical density of TUNEL-positive cells and VEGF-positive blood vessel profiles were also obtained. Data were statistically evaluated using a one-way anova with the post-hoc Kruskal-Wallis or Tukey test and a significance level of P ≤ 0.05. Fragments of maxilla were embedded in Araldite for analysis under transmission electron microscopy (TEM). TUNEL-positive structures, fibroblasts with strongly basophilic nuclei and macrophages were observed in the lamina propria at all ages. Using TEM, we identified processes of fibroblasts or macrophages surrounding partially apoptotic cells. We found a high number of apoptotic cells in 11-, 13- and 16-day-old rats. We observed VEGF-positive blood vessel profiles at all ages, but a significant decrease in the numerical density was found in 13- and 16-day-old rats compared with 9-day-old rats. Therefore, the establishment of the eruptive pathway during the mucosal penetration stage depends on cell death by apoptosis, the phagocytic activity of fibroblasts and macrophages, and a decrease in the microvasculature due to vascular cell death. These data point to the importance of vascular rearrangement and vascular neoformation during tooth eruption and the development of oral mucosa.
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Affiliation(s)
| | - Estela Sasso-Cerri
- Dental School - Laboratory of Histology and Embryology, UNESP - São Paulo State University, Araraquara, SP, Brazil
| | - Paulo Sérgio Cerri
- Dental School - Laboratory of Histology and Embryology, UNESP - São Paulo State University, Araraquara, SP, Brazil
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Silverman-Gavrila RV, Silverman-Gavrila LB, Bilal KH, Bendeck MP. Spectrin alpha is important for rear polarization of the microtubule organizing center during migration and spindle pole assembly during division of neointimal smooth muscle cells. Cytoskeleton (Hoboken) 2015; 72:157-70. [DOI: 10.1002/cm.21222] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Revised: 01/31/2015] [Accepted: 04/07/2015] [Indexed: 01/18/2023]
Affiliation(s)
| | | | - Khawaja Hasan Bilal
- Department of Laboratory Medicine and Pathobiology; University of Toronto; Toronto Canada
| | - Michelle P. Bendeck
- Department of Laboratory Medicine and Pathobiology; University of Toronto; Toronto Canada
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Kim J, Procknow JD, Yanagisawa H, Wagenseil JE. Differences in genetic signaling, and not mechanical properties of the wall, are linked to ascending aortic aneurysms in fibulin-4 knockout mice. Am J Physiol Heart Circ Physiol 2015; 309:H103-13. [PMID: 25934097 DOI: 10.1152/ajpheart.00178.2015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 04/30/2015] [Indexed: 12/21/2022]
Abstract
Fibulin-4 is an extracellular matrix protein that is essential for proper assembly of arterial elastic fibers. Mutations in fibulin-4 cause cutis laxa with thoracic aortic aneurysms (TAAs). Sixty percent of TAAs occur in the ascending aorta (AA). Newborn mice lacking fibulin-4 (Fbln4(-/-)) have aneurysms in the AA, but narrowing in the descending aorta (DA), and are a unique model to investigate locational differences in aneurysm susceptibility. We measured mechanical behavior and gene expression of AA and DA segments in newborn Fbln4(-/-) and Fbln4(+/+) mice. Fbln4(-/-) AA has increased diameters compared with Fbln4(+/+) AA and Fbln4(-/-) DA at most applied pressures, confirming genotypic and locational specificity of the aneurysm phenotype. When diameter compliance and tangent modulus were calculated from the mechanical data, we found few significant differences between genotypes, suggesting that the mechanical response to incremental diameter changes is similar, despite the fragmented elastic fibers in Fbln4(-/-) aortas. Fbln4(-/-) aortas showed a trend toward increased circumferential stretch, which may be transmitted to smooth muscle cells (SMCs) in the wall. Gene expression data suggest activation of pathways for SMC proliferation and inflammation in Fbln4(-/-) aortas compared with Fbln4(+/+). Additional genes in both pathways, as well as matrix metalloprotease-8 (Mmp8), are upregulated specifically in Fbln4(-/-) AA compared with Fbln4(+/+) AA and Fbln4(-/-) DA. Mmp8 is a neutrophil collagenase that targets type 1 collagen, and upregulation may be necessary to allow diameter expansion in Fbln4(-/-) AA. Our results provide molecular and mechanical targets for further investigation in aneurysm pathogenesis.
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Affiliation(s)
- Jungsil Kim
- Department of Mechanical Engineering and Materials Science, Washington University, St. Louis, Missouri
| | - Jesse D Procknow
- Department of Mechanical Engineering and Materials Science, Washington University, St. Louis, Missouri
| | - Hiromi Yanagisawa
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, Texas; and Life Science Center of Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Japan
| | - Jessica E Wagenseil
- Department of Mechanical Engineering and Materials Science, Washington University, St. Louis, Missouri;
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Yao C, Yu J, Taylor L, Polgar P, McComb ME, Costello CE. Protein Expression by Human Pulmonary Artery Smooth Muscle Cells Containing a BMPR2 Mutation and the Action of ET-1 as Determined by Proteomic Mass Spectrometry. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 2015; 378:347-359. [PMID: 25866469 PMCID: PMC4387548 DOI: 10.1016/j.ijms.2014.10.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Pulmonary arterial hypertension (PAH) is a disease characterized by increased pulmonary vascular resistance and remodeling. Increase in the population of vascular smooth muscle cells is among the key events contributing to the remodeling. Endothelin-1 (ET-1), a potent vasoconstrictor, is linked to the etiology and progression of PAH. Here we analyze changes in protein expressions in response to ET-1 in pulmonary arterial smooth muscle cells (PASMC) from a healthy Control (non-PAH) and a PAH subject presenting a bone morphogenetic protein type II receptor (BMPR2) mutation with exon 1-8 deletion. Protein expressions were analyzed by proteomic mass spectrometry using label-free quantitation and the correlations were subjected to Ingenuity™ Pathway Analysis. The results point to eIF2/mTOR/p70S6K, RhoA/actin cytoskeleton/integrin and protein unbiquitination as canonical pathways whose protein expressions increase with the development of PAH. These pathways have an intimal function in the PAH-related physiology of smooth muscle proliferation, apoptosis, contraction and cellular stress. Exposure of the cells to ET-1 further increases protein expression within these pathways. Thus our results show changes in signaling pathways as a consequence of PAH and the effect of ET-1 interference on Control and PAH-affected cells.
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Affiliation(s)
- Chunxiang Yao
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany St., Boston, MA 02118 USA
| | - Jun Yu
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118 USA
| | - Linda Taylor
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118 USA
| | - Peter Polgar
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118 USA
| | - Mark E. McComb
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany St., Boston, MA 02118 USA
| | - Catherine E. Costello
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany St., Boston, MA 02118 USA
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118 USA
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Futyma K, Miotła P, Różyńska K, Zdunek M, Semczuk A, Rechberger T, Wojcierowski J. Expression of genes encoding extracellular matrix proteins: a macroarray study. Oncol Rep 2014; 32:2349-53. [PMID: 25231141 PMCID: PMC4240474 DOI: 10.3892/or.2014.3493] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 08/14/2014] [Indexed: 11/06/2022] Open
Abstract
Endometrial cancer (EC) is one of the most common gynecological malignancies in Poland, with well-established risk factors. Genetic instability and molecular alterations responsible for endometrial carcinogenesis have been systematically investigated. The aim of the present study was to investigate, by means of cDNA macroarrays, the expression profiles of genes encoding extracellular matrix (ECM) proteins in ECs. Tissue specimens were collected during surgical procedures from 40 patients with EC, and control tissue was collected from 9 patients with uterine leiomyomas. RNA was isolated and RT-PCR with radioisotope-labeled cDNA was performed. The levels of ECM protein gene expression in normal endometrial tissues were compared to the expression of these genes in EC specimens. Statistically significant differences in gene expression, stratified by clinical stage of the ECs, were detected for aggrecan, vitronectin, tenascin R, nidogen and two collagen proteins: type VIII chain α1 and type XI chain α2. All of these proteins were overexpressed in stage III endometrial carcinomas compared to levels in stage I and II uterine neoplasms. In conclusion, increased expression of genes encoding ECM proteins may play an important role in facilitating accelerated disease progression of human ECs.
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Affiliation(s)
- Konrad Futyma
- Second Department of Gynecology, Medical University of Lublin, Lublin, Poland
| | - Paweł Miotła
- Second Department of Gynecology, Medical University of Lublin, Lublin, Poland
| | - Krystyna Różyńska
- Department of Clinical Genetics, Medical University of Lublin, Lublin, Poland
| | - Małgorzata Zdunek
- Department of Clinical Pathology, Medical University of Lublin, Lublin, Poland
| | - Andrzej Semczuk
- Second Department of Gynecology, Medical University of Lublin, Lublin, Poland
| | - Tomasz Rechberger
- Second Department of Gynecology, Medical University of Lublin, Lublin, Poland
| | - Jacek Wojcierowski
- Department of Medical Genetics, Medical University of Lublin, Lublin, Poland
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Gotha L, Lim SY, Osherov AB, Wolff R, Qiang B, Erlich I, Nili N, Pillarisetti S, Chang YT, Tran PK, Tryggvason K, Hedin U, Tran-Lundmark K, Advani SL, Gilbert RE, Strauss BH. Heparan sulfate side chains have a critical role in the inhibitory effects of perlecan on vascular smooth muscle cell response to arterial injury. Am J Physiol Heart Circ Physiol 2014; 307:H337-45. [PMID: 24858854 DOI: 10.1152/ajpheart.00654.2013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Perlecan is a proteoglycan composed of a 470-kDa core protein linked to three heparan sulfate (HS) glycosaminoglycan chains. The intact proteoglycan inhibits the smooth muscle cell (SMC) response to vascular injury. Hspg2(Δ3/Δ3) (MΔ3/Δ3) mice produce a mutant perlecan lacking the HS side chains. The objective of this study was to determine differences between these two types of perlecan in modifying SMC activities to the arterial injury response, in order to define the specific role of the HS side chains. In vitro proliferative and migratory activities were compared in SMC isolated from MΔ3/Δ3 and wild-type mice. Proliferation of MΔ3/Δ3 SMC was 1.5× greater than in wild type (P < 0.001), increased by addition of growth factors, and showed a 42% greater migratory response than wild-type cells to PDGF-BB (P < 0.001). In MΔ3/Δ3 SMC adhesion to fibronectin, and collagen types I and IV was significantly greater than wild type. Addition of DRL-12582, an inducer of perlecan expression, decreased proliferation and migratory response to PDGF-BB stimulation in wild-type SMC compared with MΔ3/Δ3. In an in vivo carotid artery wire injury model, the medial thickness, medial area/lumen ratio, and macrophage infiltration were significantly increased in the MΔ3/Δ3 mice, indicating a prominent role of the HS side chain in limiting vascular injury response. Mutant perlecan that lacks HS side chains had a marked reduction in the inhibition of in vitro SMC function and the in vivo arterial response to injury, indicating the critical role of HS side chains in perlecan function in the vessel wall.
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Affiliation(s)
- Lara Gotha
- Schulich Heart Program, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Sang Yup Lim
- Schulich Heart Program, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Korea University Ansan Hospital, Ansan, Korea
| | - Azriel B Osherov
- Schulich Heart Program, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Rafael Wolff
- Schulich Heart Program, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Beiping Qiang
- Schulich Heart Program, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Ilana Erlich
- Schulich Heart Program, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Nafiseh Nili
- Schulich Heart Program, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | | | - Ya-Ting Chang
- Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden; and
| | - Phan-Kiet Tran
- Department of Pediatric Cardiac Surgery, Skane University Hospital, Lund, Sweden
| | - Karl Tryggvason
- Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden; and
| | - Ulf Hedin
- Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden; and
| | - Karin Tran-Lundmark
- Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden; and
| | - Suzanne L Advani
- Keenan Research Centre in the Li Ka Shing Knowledge Institute, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Richard E Gilbert
- Keenan Research Centre in the Li Ka Shing Knowledge Institute, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Bradley H Strauss
- Schulich Heart Program, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada;
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Abstract
The extracellular matrix (ECM) is an essential component of the human body that is responsible for the proper function of various organs. Changes in the ECM have been implicated in the pathogenesis of several cardiovascular conditions including atherosclerosis, restenosis, and heart failure. Matrix components, such as collagens and noncollagenous proteins, influence the function and activity of vascular cells, particularly vascular smooth muscle cells and macrophages. Matrix proteins have been shown to be implicated in the development of atherosclerotic complications, such as plaque rupture, aneurysm formation, and calcification. ECM proteins control ECM remodeling through feedback signaling to matrix metalloproteinases (MMPs), which are the key players of ECM remodeling in both normal and pathological conditions. The production of MMPs is closely related to the development of an inflammatory response and is subjected to significant changes at different stages of atherosclerosis. Indeed, blood levels of circulating MMPs may be useful for the assessment of the inflammatory activity in atherosclerosis and the prediction of cardiovascular risk. The availability of a wide variety of low-molecular MMP inhibitors that can be conjugated with various labels provides a good perspective for specific targeting of MMPs and implementation of imaging techniques to visualize MMP activity in atherosclerotic plaques and, most interestingly, to monitor responses to antiatheroslerosis therapies. Finally, because of the crucial role of ECM in cardiovascular repair, the regenerative potential of ECM could be successfully used in constructing engineered scaffolds and vessels that mimic properties of the natural ECM and consist of the native ECM components or composite biomaterials. These scaffolds possess a great promise in vascular tissue engineering.
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Barnes J, Pat B, Chen YW, Powell PC, Bradley WE, Zheng J, Karki A, Cui X, Guichard J, Wei CC, Collawn J, Dell'Italia LJ. Whole-genome profiling highlights the molecular complexity underlying eccentric cardiac hypertrophy. Ther Adv Cardiovasc Dis 2014; 8:97-118. [PMID: 24692245 DOI: 10.1177/1753944714527490] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES Heart failure is typically preceded by myocardial hypertrophy and remodeling, which can be concentric due to pressure overload (PO), or eccentric because of volume overload (VO). The molecular mechanisms that underlie these differing patterns of hypertrophy are distinct and have yet to be fully elucidated. Thus, the goal of this work is to identify novel therapeutic targets for cardiovascular conditions marked by hypertrophy that have previously been resistant to medical treatment, such as a pure VO. METHODS Concentric or eccentric hypertrophy was induced in rats for 2 weeks with transverse aortic constriction (TAC) or aortocaval fistula (ACF), respectively. Hemodynamic and echocardiographic analysis were used to assess the development of left ventricular (LV) hypertrophy and functional differences between groups. Changes in gene expression were determined by microarray and further characterized with Ingenuity Pathway Analysis. RESULTS Both models of hypertrophy increased LV mass. Rats with TAC demonstrated concentric LV remodeling while rats with ACF exhibited eccentric LV remodeling. Microarray analysis associated eccentric remodeling with a more extensive alteration of gene expression compared with concentric remodeling. Rats with VO had a marked activation of extracellular matrix genes, promotion of cell cycle genes, downregulation of genes associated with oxidative metabolism, and dysregulation of genes critical to cardiac contractile function. Rats with PO demonstrated similar categorical changes, but with the involvement of fewer individual genes. CONCLUSIONS Our results indicate that eccentric remodeling is a far more complex process than concentric remodeling. This study highlights the importance of several key biological functions early in the course of VO, including regulation of matrix, metabolism, cell proliferation, and contractile function. Thus, the results of this analysis will inform the ongoing search for new treatments to prevent the progression to heart failure in VO.
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Affiliation(s)
- Justin Barnes
- Department of Pathology, Division of Molecular and Cellular Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USADepartment of Medicine, Division of Cardiology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Betty Pat
- Department of Medicine, Division of Cardiology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Yuan-Wen Chen
- Department of Medicine, Division of Cardiology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Pamela C Powell
- Department of Medicine, Division of Cardiology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Wayne E Bradley
- Department of Medicine, Division of Cardiology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Junying Zheng
- Department of Medicine, Division of Cardiology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Amrit Karki
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Xiangqin Cui
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Jason Guichard
- Department of Medicine, Division of Cardiology, University of Alabama at Birmingham, Birmingham, Alabama, USADepartment of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Chih-Chang Wei
- Birmingham Department of Veteran Affairs, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - James Collawn
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Jesus LE, Schanaider A, Kirwan T, Aitken KJ, Caldas MLR, Fonseca E, Marchenko A, Bagli DJ, Pippi-Salle JL. Reduced flow after tubularized incised plate urethroplasty--increased fibrogenesis, elastin fiber loss or neither? J Urol 2013; 191:1856-62. [PMID: 24316090 DOI: 10.1016/j.juro.2013.11.098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/25/2013] [Indexed: 11/24/2022]
Abstract
PURPOSE Low urinary flow rates are common after tubularized incised plate urethroplasty but the etiology remains unclear and may be related to low urethral compliance due to abnormal collagen concentrations and/or fewer elastic fibers in the healed urethral plate. We hypothesized that inserting a preputial mucosal graft over the dorsal raw area after the midline incision may avoid scarring and improve urethral compliance. MATERIALS AND METHODS Adult rabbits were submitted to tubularized incised plate urethroplasty with or without inlay preputial graft according to a previously described protocol. Tissular concentrations of collagens I, III, IV, VI, VIII and XIII were measured. Histomorphometric analysis was used to quantify elastic fibers in the urethra. Tubularized incised plate urethroplasty with and without inlay preputial graft was compared to normal rabbit urethras (controls). RESULTS mRNA concentrations for collagens I, II and XIII were similar between controls and operated rabbits. The proportions between collagens I and III were 1.05, 0.87 and 1.21, respectively, in controls and animals undergoing tubularized incised plate urethroplasty with and without inlay preputial graft. mRNA concentrations for collagen IV and collagens VI/VIII tended to be higher and lower, respectively, in the operated urethras, despite showing statistical significance only for collagen VIII in animals undergoing tubularized incised plate urethroplasty with inlay preputial graft vs controls (p=0.02). The operated animals did not demonstrate a reduced number of elastic fibers in the urethral tissues compared to controls. CONCLUSIONS Elastic fiber number and distribution were similar between tubularized incised plate urethroplasty cases and controls, suggesting that decreased concentrations of elastic fibers do not explain the reduced urethral compliance after tubularized incised plate urethroplasty. The raw area determined by the dorsal urethral incision regenerated after standard tubularized incised plate urethroplasty, while cicatrization with fibrosis occurred in correspondence to the grafted areas after tubularized incised plate urethroplasty with inlay preputial graft.
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Affiliation(s)
- Lisieux Eyer Jesus
- Center for Experimental Surgery, Postgraduate Program in Surgical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Department of Surgery, Division of Pediatric Surgery and Pediatric Urology, Federal Fluminense University and Servidores do Estado Hospital, Rio de Janeiro, Brazil.
| | - Alberto Schanaider
- Center for Experimental Surgery, Postgraduate Program in Surgical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tyler Kirwan
- Division of Developmental and Stem Cell Biology, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Karen J Aitken
- Division of Developmental and Stem Cell Biology, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Maria L R Caldas
- Department of Pathology, Federal Fluminense University and Servidores do Estado Hospital, Rio de Janeiro, Brazil
| | - Elissa Fonseca
- Department of Pathology, Federal Fluminense University and Servidores do Estado Hospital, Rio de Janeiro, Brazil
| | - Alexander Marchenko
- Division of Pediatric Urology, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Darius J Bagli
- Division of Pediatric Urology, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada; Division of Developmental and Stem Cell Biology, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - João L Pippi-Salle
- Division of Pediatric Urology, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
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Shen Z, Li D, Zhao Y, Guo J. Screening of differentially expressed miRNAs related to muscle strain and their target gene. Mol Biol 2013. [DOI: 10.1134/s0026893313050233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Lopes J, Adiguzel E, Gu S, Liu SL, Hou G, Heximer S, Assoian RK, Bendeck MP. Type VIII collagen mediates vessel wall remodeling after arterial injury and fibrous cap formation in atherosclerosis. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 182:2241-53. [PMID: 23567639 DOI: 10.1016/j.ajpath.2013.02.011] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 01/25/2013] [Accepted: 02/12/2013] [Indexed: 12/15/2022]
Abstract
Collagens in the atherosclerotic plaque signal regulation of cell behavior and provide tensile strength to the fibrous cap. Type VIII collagen, a short-chain collagen, is up-regulated in atherosclerosis; however, little is known about its functions in vivo. We studied the response to arterial injury and the development of atherosclerosis in type VIII collagen knockout mice (Col8(-/-) mice). After wire injury of the femoral artery, Col8(-/-) mice had decreased vessel wall thickening and outward remodeling when compared with Col8(+/+) mice. We discovered that apolipoprotein E (ApoE) is an endogenous repressor of the Col8a1 chain, and, therefore, in ApoE knockout mice, type VIII collagen was up-regulated. Deficiency of type VIII collagen in ApoE(-/-) mice (Col8(-/-);ApoE(-/-)) resulted in development of plaques with thin fibrous caps because of decreased smooth muscle cell migration and proliferation and reduced accumulation of fibrillar type I collagen. In contrast, macrophage accumulation was not affected, and the plaques had large lipid-rich necrotic cores. We conclude that in atherosclerosis, type VIII collagen is up-regulated in the absence of ApoE and functions to increase smooth muscle cell proliferation and migration. This is an important mechanism for formation of a thick fibrous cap to protect the atherosclerotic plaque from rupture.
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Affiliation(s)
- Joshua Lopes
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
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Adiguzel E, Hou G, Sabatini PJB, Bendeck MP. Type VIII collagen signals via β1 integrin and RhoA to regulate MMP-2 expression and smooth muscle cell migration. Matrix Biol 2013; 32:332-41. [PMID: 23523587 DOI: 10.1016/j.matbio.2013.03.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 03/05/2013] [Accepted: 03/10/2013] [Indexed: 11/25/2022]
Abstract
The extracellular matrix signals and regulates the behavior of vascular cells during the pathogenesis of atherosclerosis. Type VIII collagen, a short chain collagen, is scarcely present in normal arteries, but is dramatically upregulated in atherosclerosis and after other types of vascular injury. Cell culture studies have revealed that this protein supports smooth muscle cell (SMC) adhesion and stimulates migration, however little is known about the signaling or the mechanisms by which this occurs. SMCs isolated from wild-type C57BL/6 and type VIII collagen deficient mice were studied using assays to measure chemotactic and haptotactic migration, and remodeling and contraction of 3-dimensional type I collagen gels. Col8(-/-) SMCs exhibited impairments in migration, and a strongly adhesive phenotype with prominent stress fibers, stable microtubules and pronounced central basal focal adhesions. The addition of exogenous type VIII collagen to the Col8(-/-) SMCs rescued the impairments in migration, and restored cytoskeletal architecture so that it was similar to Col8(+/+) cells. We measured elevated levels of active GTP-RhoA in the Col8(-/-) cells, and this too was reversed by treatment with exogenous type VIII collagen. We showed that type VIII collagen normally suppresses RhoA activation through a beta-1 integrin dependent mechanism. MMP-2 levels were reduced in the Col8(-/-) SMCs, and knockdown of MMP-2 in Col8(+/+) SMCs partially recapitulated the decreases in migration and 3D gel contraction seen in Col8(-/-) cells, showing that type VIII collagen-stimulated migration was dependent on MMP-2. Inhibition of Rho restored MMP-2 activity in the Col8(-/-) cells, and partially rescued migration, demonstrating that the elevations in RhoA activity were responsible for the suppression of migration of these cells. In conclusion, we have shown that type VIII collagen signals through beta-1 integrin receptors to suppress RhoA, allowing optimal configuration of the cytoskeleton, and the stimulation of MMP-2-dependent cell migration.
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Affiliation(s)
- Eser Adiguzel
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Ontario M5S 1A8, Canada.
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35
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Skrbic B, Bjørnstad JL, Marstein HS, Carlson CR, Sjaastad I, Nygård S, Bjørnstad S, Christensen G, Tønnessen T. Differential regulation of extracellular matrix constituents in myocardial remodeling with and without heart failure following pressure overload. Matrix Biol 2013; 32:133-42. [PMID: 23220517 DOI: 10.1016/j.matbio.2012.11.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 11/09/2012] [Accepted: 11/28/2012] [Indexed: 11/26/2022]
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Wang W, Xu G, Ding CL, Zhao LJ, Zhao P, Ren H, Qi ZT. All-trans retinoic acid protects hepatocellular carcinoma cells against serum-starvation-induced cell death by upregulating collagen 8A2. FEBS J 2013; 280:1308-19. [PMID: 23298258 DOI: 10.1111/febs.12122] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 12/11/2012] [Accepted: 01/01/2013] [Indexed: 01/14/2023]
Abstract
As a therapeutic or chemopreventative agent for various cancers, all-trans retinoic acid (atRA) has been reported to inhibit growth, induce apoptosis or cause differentiation. It was found that atRA could protect hepatocellular carcinoma (HCC) cells against cell death induced by serum starvation. Furthermore, it was found that atRA could enhance cell adhesion, but had no effect on the cell cycle and apoptosis. Using an Illumina Human HT-12 v4 expression microarray, 207 upregulated and 173 downregulated genes were identified in HepG2 cells treated with atRA. The most upregulated genes are cytochrome P450 family 26 subfamily A polypeptide 1 (CYP26A1), histidine triad nucleotide binding protein 3 (HINT3), miR-1282 and cytochrome P450 family 26 subfamily B polypeptide 1 (CYP26B1), which showed more than fivefold greater expression. Using Gene Ontology analysis, the greatest significance was found in extracellular-matrix-related molecular functions and the cellular component in upregulated genes. The upregulation of collagen 8A2 (COL8A2) was further confirmed using quantitative RT-PCR and western blotting. Knockdown of COL8A2 blocked enhancement in the early stage of cell adhesion by atRA treatment. Re-expression of COL8A2 in COL8A2-knocked-down HCC cells reversed the effect of small interfering RNA-COL8A2. In addition, COL8A2 could increase HCC cell migration and invasion. Thus, COL8A2 was identified as the key protein involved in the enhancement of cell adhesion of atRA under serum-free conditions. In conclusion, atRA protects HCC cells against serum-starvation-induced cell death by enhancing cell adhesion, and COL8A2 plays an important role in HCC cell migration and invasion.
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Affiliation(s)
- Wen Wang
- Department of Microbiology, Shanghai Key Laboratory of Medical Biodefense, Second Military Medical University, Shanghai, China
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37
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Cell division fidelity is altered during the vascular response to injury: its novel role in atherosclerosis progression. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 182:628-39. [PMID: 23260773 DOI: 10.1016/j.ajpath.2012.11.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 10/02/2012] [Accepted: 11/07/2012] [Indexed: 12/31/2022]
Abstract
The rapid proliferation of smooth muscle cells (SMCs) contributes to atherosclerotic plaque formation and neointimal thickening in other occlusive vascular diseases. In cancer cells, rapid cell proliferation is often accompanied by DNA damage, division aberrations, elevated cell apoptosis, or accumulation of abnormal cells. However, little is known about division fidelity in vascular disorders. We have analyzed the cell division fidelity during the rapid SMC proliferation that occurs after balloon injury of the rat carotid artery using en face confocal microscopy of the full thickness of the vessel wall. SMCs newly migrated to the neointima had increased division defects and increased apoptosis compared with SMCs in the subjacent media, despite comparable mitosis rates. Protein kinase Cα and the receptor for hyaluronic acid-mediated motility (RHAMM) regulate division fidelity in cultured neointimal SMCs. The centrosomal targeting sequence of RHAMM was required for localization to the mitotic spindle and spindle organization. Dynein and RHAMM colocalized in the spindle area and were part of a complex. Dynein inhibition caused spindle defects similar to RHAMM or protein kinase C inhibition. Our study uncovered abnormalities in rapidly proliferating SMCs after arterial injury that could contribute to the growth of atherosclerotic plaques and reduce plaque stability by triggering apoptosis, and it described a mechanism by which RHAMM and dynein coordinate division fidelity in neointimal SMCs.
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Ma ZH, Ma JH, Jia L, Zhao YF. Effect of enhanced expression of COL8A1 on lymphatic metastasis of hepatocellular carcinoma in mice. Exp Ther Med 2012; 4:621-626. [PMID: 23170115 PMCID: PMC3501407 DOI: 10.3892/etm.2012.652] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Accepted: 07/25/2012] [Indexed: 11/25/2022] Open
Abstract
The present study aimed to investigate the influence of COL8A1 expression on cell invasiveness, drug sensitivity and tumorigenicity of hepatocellular carcinoma Hepa1-6 cells with low metastatic potential. COL8A1-1-pEGFP-N2 and pEGFP-N2 were transfected into experimental and control group cells. The COL8A1 expression in transfected Hepa1-6 cells was analyzed with RT-PCR and western blot analysis. The invasive potential of transfected Hepa1-6 cells was tested in invasion experiments in vitro and the tumorigenic ability of the transfected Hepa1-6 cells was tested in mouse tumors in vivo. Hepa1-6 cell proliferation and D-limonene sensitivity was analyzed using the MTT method. Expression of COL8A1 in the Hepa1-6/COL8A1 group showed a significant increase when compared with the untransfected cells of the Hepa1-6 control group and empty-plasmid transfected cells from the Hepa1-6/mock control group. Enhanced COL8A1 expression increased cell proliferation and matrix adhesion ability via invasion and tumorigenesis in vivo while the sensitivity to D-limonene was concurrently inhibited. The expression of COL8A1 in hepatocarcinoma cells was correlated with increased tumor cell proliferation, invasion, in vivo tumorigenicity and reduced antitumor drug sensitivity, and may provide novel targets for tumor therapy.
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Affiliation(s)
- Zhen-Hai Ma
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027
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Gruzdev A, Nguyen M, Kovarova M, Koller BH. PGE2 through the EP4 receptor controls smooth muscle gene expression patterns in the ductus arteriosus critical for remodeling at birth. Prostaglandins Other Lipid Mediat 2012; 97:109-19. [PMID: 22342504 DOI: 10.1016/j.prostaglandins.2012.02.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2011] [Revised: 02/01/2012] [Accepted: 02/02/2012] [Indexed: 10/14/2022]
Abstract
The ductus arteriosus (DA) is a fetal shunt that directs right ventricular outflow away from pulmonary circulation and into the aorta. Critical roles for prostaglandin E(2) (PGE(2)) and the EP4 receptor (EP4) have been established in maintaining both the patency of the vessel in utero and in its closure at birth. Here we have generated mice in which loss of EP4 expression is limited to either the smooth muscle (SMC) or endothelial cells and demonstrated that SMC, but not endothelial cell expression of EP4 is required for DA closure. The genome wide expression analysis of full term wild type and EP4(-/-) DA indicates that PGE(2)/EP4 signaling modulates expression of a number of unique pathways, including those involved in SMC proliferation, cell migration, and vascular tone. Together this supports a mechanism by which maturation and increased contractility of the vessel is coupled to the potent smooth muscle dilatory actions of PGE(2).
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Affiliation(s)
- Artiom Gruzdev
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7248, USA
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40
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Jun AS, Meng H, Ramanan N, Matthaei M, Chakravarti S, Bonshek R, Black GCM, Grebe R, Kimos M. An alpha 2 collagen VIII transgenic knock-in mouse model of Fuchs endothelial corneal dystrophy shows early endothelial cell unfolded protein response and apoptosis. Hum Mol Genet 2011; 21:384-93. [PMID: 22002996 DOI: 10.1093/hmg/ddr473] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Fuchs endothelial corneal dystrophy (FECD) is a leading indication for corneal transplantation. FECD is characterized by progressive alterations in endothelial cell morphology, excrescences (guttae) and thickening of the endothelial basement membrane and cell death. Ultimately, these changes lead to corneal edema and vision loss. Due to the lack of vision loss in early disease stages and the decades long disease course, early pathophysiology in FECD is virtually unknown as studies of pathologic tissues have been limited to end-stage tissues obtained at transplant. The first genetic defect shown to cause FECD was a point mutation causing a glutamine to lysine substitution at amino acid position 455 (Q455K) in the alpha 2 collagen 8 gene (COL8A2) which results in an early onset form of the disease. Homozygous mutant knock-in mice with this mutation (Col8a2(Q455K/Q455K)) show features strikingly similar to human disease, including progressive alterations in endothelial cell morphology, cell loss and basement membrane guttae. Ultrastructural analysis shows the predominant defect as dilated endoplasmic reticulum (ER), suggesting ER stress and unfolded protein response (UPR) activation. Immunohistochemistry, western blotting, quantitative reverse transcriptase polymerase chain reaction and terminal deoxynucleotidyl transferase 2-deoxyuridine, 5-triphosphate nick end-labeling analyses support UPR activation and UPR-associated apoptosis in the Col8a2(Q455K/Q455K) mutant corneal endothelium. This study confirms the Q455K substitution in the COL8A2 gene as being sufficient to cause FECD in the first mouse model of this disease and supports the role of the UPR and UPR-associated apoptosis in the pathogenesis of FECD caused by COL8A2 mutations.
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Affiliation(s)
- Albert S Jun
- Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, MD 21231, USA.
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Silverman-Gavrila R, Silverman-Gavrila L, Hou G, Zhang M, Charlton M, Bendeck MP. Rear polarization of the microtubule-organizing center in neointimal smooth muscle cells depends on PKCα, ARPC5, and RHAMM. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 178:895-910. [PMID: 21281821 DOI: 10.1016/j.ajpath.2010.10.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2010] [Revised: 09/13/2010] [Accepted: 10/05/2010] [Indexed: 01/01/2023]
Abstract
Directed migration of smooth muscle cells (SMCs) from the media to the intima in arteries occurs during atherosclerotic plaque formation and during restenosis after angioplasty or stent application. The polarized orientation of the microtubule-organizing center (MTOC) is a key determinant of this process, and we therefore investigated factors that regulate MTOC polarity in vascular SMCs. SMCs migrating in vivo from the medial to the intimal layer of the rat carotid artery following balloon catheter injury were rear polarized, with the MTOC located posterior of the nucleus. In tissue culture, migrating neointimal cells maintained rear polarization, whereas medial cells were front polarized. Using phosphoproteomic screening and mass spectrometry, we identified ARPC5 and RHAMM as protein kinase C (PKC)-phosphorylated proteins associated with rear polarization of the MTOC in neointimal SMCs. RNA silencing of ARPC5 and RHAMM, PKC inhibition, and transfection with a mutated nonphosphorylatable ARPC5 showed that these proteins regulate rear polarization by organizing the actin and microtubule cytoskeletons in neointimal SMCs. Both ARPC5 and RHAMM, in addition to PKC, were required for migration of neointimal SMCs.
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Mannelqvist M, Stefansson IM, Bredholt G, Hellem Bø T, Oyan AM, Jonassen I, Kalland KH, Salvesen HB, Akslen LA. Gene expression patterns related to vascular invasion and aggressive features in endometrial cancer. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 178:861-71. [PMID: 21281818 DOI: 10.1016/j.ajpath.2010.10.040] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2010] [Revised: 08/31/2010] [Accepted: 10/13/2010] [Indexed: 01/09/2023]
Abstract
The presence of tumor cells entering vascular channels is a prognostic marker for many cancers, including endometrial carcinoma. Vascular invasion is considered to be an early step in the metastatic process and important for the progress of malignant tumors. Here, we investigated the gene expression patterns related to vascular involvement in 57 primary endometrial cancers, using DNA microarray and quantitative PCR techniques. A vascular invasion signature of 18 genes was significantly associated with patient survival and clinicopathological phenotype. Vascular involvement was also related to gene sets for epithelial-mesenchymal transition, wound response, endothelial cells, and vascular endothelial growth factor (VEGF) activity. With immunohistochemical validation, both collagen 8 and matrix metalloproteinase 3 (MMP3) were associated with vascular invasion, whereas ANGPTL4 and IL-8 were associated with patient survival. Our findings indicate that vascular involvement within primary tumors is associated with gene expression profiles related to angiogenesis and epithelial-mesenchymal transition. These data could contribute to an improved understanding of potential targets for metastatic spread and may provide clinically important information for better management of endometrial cancer.
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Affiliation(s)
- Monica Mannelqvist
- Section for Pathology, The Gade Institute, University of Bergen, Bergen, Norway
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Loeffler I, Hopfer U, Koczan D, Wolf G. Type VIII collagen modulates TGF-β1-induced proliferation of mesangial cells. J Am Soc Nephrol 2011; 22:649-63. [PMID: 21372207 DOI: 10.1681/asn.2010010098] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Mesangial cells in diabetic mice and human kidneys with diabetic nephropathy exhibit increased type VIII collagen, a nonfibrillar protein that exists as a heterodimer composed of α1(VIII) and α2(VIII), encoded by Col8a1 and Col8a2, respectively. Because TGF-β1 promotes the development of diabetic glomerulosclerosis, we studied whether type VIII collagen modulates the effects of TGF-β1 in mesangial cells. We obtained primary cultures of mesangial cells from wild-type, doubly heterozygous (Col8a1(+/-)/Col8a2(+/-)), and double-knockout (Col8a1(-/-)/Col8a2(-/-)) mice. TGF-β1 bound normally to double-knockout mesangial cells. In wild-type mesangial cells, TGF-β1 inhibited proliferation, but in double-knockout cells, it stimulated proliferation, promoted cell cycle progression, and reduced apoptosis; we could reverse this effect by reconstituting α1(VIII). Furthermore, in wild-type cells, TGF-β1 mainly stimulated the Smad pathways, whereas in double-knockout cells, it activated the MAPK and PI3K/Akt pathways and induced expression of fibroblast growth factor 21 (FGF21). Inhibiting FGF21 expression by either interfering with activation of the MAPK and PI3K/Akt pathways or by FGF21 siRNA attenuated the TGF-β1-induced proliferation of double-knockout mesangial cells. In vivo, diabetic double-knockout mice had significantly higher expression of renal FGF21 mRNA and protein compared with diabetic wild-type mice. Immunohistochemistry revealed strong expression of FGF21 in both glomerular (mesangial) and tubular cells of diabetic mice. Taken together, these data suggest that type VIII collagen significantly modulates the effect of TGF-β1 on mesangial cells and may therefore play a role in the pathogenesis of diabetic nephropathy.
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Affiliation(s)
- Ivonne Loeffler
- Department of Internal Medicine III, University of Jena, Erlanger Allee 101, D-07740 Jena, Germany
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Bjornstad JL, Sjaastad I, Nygard S, Hasic A, Ahmed MS, Attramadal H, Finsen AV, Christensen G, Tonnessen T. Collagen isoform shift during the early phase of reverse left ventricular remodelling after relief of pressure overload. Eur Heart J 2010; 32:236-45. [DOI: 10.1093/eurheartj/ehq166] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hopfer U, Hopfer H, Meyer-Schwesinger C, Loeffler I, Fukai N, Olsen BR, Stahl RAK, Wolf G. Lack of type VIII collagen in mice ameliorates diabetic nephropathy. Diabetes 2009; 58:1672-81. [PMID: 19401424 PMCID: PMC2699847 DOI: 10.2337/db08-0183] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Key features of diabetic nephropathy include the accumulation of extracellular matrix proteins. In recent studies, increased expression of type VIII collagen in the glomeruli and tubulointerstitium of diabetic kidneys has been noted. The objectives of this study were to assess whether type VIII collagen affects the development of diabetic nephropathy and to determine type VIII collagen-dependent pathways in diabetic nephropathy in the mouse model of streptozotocin (STZ)-induced diabetes. RESEARCH DESIGN AND METHODS Diabetes was induced by STZ injections in collagen VIII-deficient or wild-type mice. Functional and histological analyses were performed 40 days after induction of diabetes. Type VIII collagen expression was assessed by Northern blots, immunohistochemistry, and real-time PCR. Proliferation of primary mesangial cells was measured by thymidine incorporation and direct cell counting. Expression of phosphorylated extracellular signal-regulated kinase (ERK1/2) and p27(Kip1) was assessed by Western blots. Finally, Col8a1 was stably overexpressed in mesangial cells. RESULTS Diabetic wild-type mice showed a strong renal induction of type VIII collagen. Diabetic Col8a1(-)/Col8a2(-) animals revealed reduced mesangial expansion and cellularity and extracellular matrix expansion compared with the wild type. These were associated with less albuminuria. High-glucose medium as well as various cytokines induced Col8a1 in cultured mesangial cells. Col8a1(-)/Col8a2(-) mesangial cells revealed decreased proliferation, less phosphorylation of Erk1/2, and increased p27(Kip1) expression. Overexpression of Col8a1 in mesangial cells induced proliferation. CONCLUSIONS Lack of type VIII collagen confers renoprotection in diabetic nephropathy. One possible mechanism is that type VIII collagen permits and/or fosters mesangial cell proliferation in early diabetic nephropathy.
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Affiliation(s)
- Ulrike Hopfer
- Department of Medicine, University of Hamburg, Hamburg, Germany.
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Adiguzel E, Ahmad PJ, Franco C, Bendeck MP. Collagens in the progression and complications of atherosclerosis. Vasc Med 2009; 14:73-89. [PMID: 19144782 DOI: 10.1177/1358863x08094801] [Citation(s) in RCA: 170] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Collagens constitute a major portion of the extracellular matrix in the atherosclerotic plaque, where they contribute to the strength and integrity of the fibrous cap, and also modulate cellular responses via specific receptors and signaling pathways. This review focuses on the diverse roles that collagens play in atherosclerosis; regulating the infiltration and differentiation of smooth muscle cells and macrophages; controlling matrix remodeling through feedback signaling to proteinases; and influencing the development of atherosclerotic complications such as plaque rupture, aneurysm formation and calcification. Expanding our understanding of the pathways involved in cell-matrix interactions will provide new therapeutic targets and strategies for the diagnosis and treatment of atherosclerosis.
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Affiliation(s)
- Eser Adiguzel
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
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Zhao Y, Jia L, Mao X, Xu H, Wang B, Liu Y. siRNA-targeted COL8A1 inhibits proliferation, reduces invasion and enhances sensitivity to D-limonence treatment in hepatocarcinoma cells. IUBMB Life 2009; 61:74-9. [PMID: 19109829 DOI: 10.1002/iub.151] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The COL8A1 (collagen type VIII, alpha-1) gene, which encodes the alpha 1 chain of collagen, type VIII, may modulate migration, proliferation and adherence of various cells. Only very sparse information exists on COL8A1 expression in hepatocarcinoma. To investigate the possible role of COL8A1 in the mouse hepatocarcinoma cell line Hca-F with highly metastatic potential in the lymph nodes, we used an RNA interference (RNAi) approach to silence COL8A1 expression. The results showed that a small interfering RNA (siRNA) targeted against COL8A1 significantly impeded Hca-F cells proliferation and colony formation in soft agar. This reduction of COL8A1 expression also led to the decreased invasion of Hca-F cells dramatically in vitro. Furthermore, the downregulation of COL8A1 expression also sensitized cells to the action of D-limonene. These data together provide insights into the function of COL8A1 and suggest that COL8A1 might represent a new potential target for gene therapy in hepatocarcinoma.
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Affiliation(s)
- Yongfu Zhao
- Department of General Surgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
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49
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Cherepanova OA, Pidkovka NA, Sarmento OF, Yoshida T, Gan Q, Adiguzel E, Bendeck MP, Berliner J, Leitinger N, Owens GK. Oxidized phospholipids induce type VIII collagen expression and vascular smooth muscle cell migration. Circ Res 2009; 104:609-18. [PMID: 19168440 DOI: 10.1161/circresaha.108.186064] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Phenotypic switching of vascular smooth muscle cells (VSMCs) is known to play a critical role in the development of atherosclerosis. However, the factors present within lesions that mediate VSMC phenotypic switching are unclear. Oxidized phospholipids (OxPLs), including 1-palmitoyl-2-(5-oxovaleroyl)-sn-glycero-3-phosphorylcholine (POVPC), are active components of minimally modified low density lipoprotein and have been previously shown to induce multiple proatherogenic events in endothelial cells and macrophages, but their effects on VSMCs have been largely unexplored until recently. We previously showed that OxPLs induced phenotypic switching of VSMCs, including suppression of SMC differentiation marker genes. The goal of the present studies was to test the hypothesis that OxPLs alter extracellular matrix production and VSMC migration. Results showed that POVPC activated expression of several extracellular matrix proteins in VSMC. POVPC increased expression of type VIII collagen alpha1 chain (Col8a1) mRNA in cultured VSMCs and in vivo in rat carotid arteries by 9-fold and 4-fold, respectively. POVPC-induced activation of Col8a1 gene expression was reduced by small interfering RNA-mediated suppression of Krüppel-like factor 4 (Klf4) and Sp1, and was abolished in Klf4-knockout VSMCs. POVPC increased Klf4 binding to the Col8a1 gene promoter both in vivo in rat carotid arteries and in cultured VSMCs based on chromatin immunoprecipitation assays. Moreover, POVPC-induced VSMC migration was markedly reduced in Klf4- or type VIII collagen-knockout VSMCs. Given evidence that OxPLs are present within atherosclerotic lesions, it is interesting to suggest that OxPL-induced changes in VSMC phenotype may contribute to the pathogenesis of atherosclerosis at least in part through changes in extracellular matrix composition.
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Affiliation(s)
- Olga A Cherepanova
- Department of Molecular Physiology and Biological Physics, University of Virginia, Robert M Berne Cardiovascular Research Center, Charlottesville, VA 22908, USA
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50
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Williamson MR, Shuttleworth A, Canfield AE, Black RA, Kielty CM. The role of endothelial cell attachment to elastic fibre molecules in the enhancement of monolayer formation and retention, and the inhibition of smooth muscle cell recruitment. Biomaterials 2007; 28:5307-18. [PMID: 17850863 DOI: 10.1016/j.biomaterials.2007.08.019] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2007] [Accepted: 08/15/2007] [Indexed: 01/23/2023]
Abstract
The endothelium is an essential modulator of vascular tone and thrombogenicity and a critical barrier between the vessel wall and blood components. In tissue-engineered small-diameter vascular constructs, endothelial cell detachment in flow can lead to thrombosis and graft failure. The subendothelial extracellular matrix provides stable endothelial cell anchorage through interactions with cell surface receptors, and influences the proliferation, migration, and survival of both endothelial cells and smooth muscle cells. We have tested the hypothesis that these desired physiological characteristics can be conferred by surface coatings of natural vascular matrix components, focusing on the elastic fiber molecules, fibrillin-1, fibulin-5 and tropoelastin. On fibrillin-1 or fibulin-5-coated surfaces, endothelial cells exhibited strong integrin-mediated attachment in static conditions (82% and 76% attachment, respectively) and flow conditions (67% and 78% cell retention on fibrillin-1 or fibulin-5, respectively, at 25 dynes/cm2), confluent monolayer formation, and stable functional characteristics. Adhesion to these two molecules also strongly inhibited smooth muscle cell migration to the endothelial monolayer. In contrast, on elastin, endothelial cells attached poorly, did not spread, and had markedly impaired functional properties. Thus, fibrillin-1 and fibulin-5, but not elastin, can be exploited to enhance endothelial stability, and to inhibit SMC migration within vascular graft scaffolds. These findings have important implications for the design of vascular graft scaffolds, the clinical performance of which may be enhanced by exploiting natural cell-matrix biology to regulate cell attachment and function.
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Affiliation(s)
- Matthew R Williamson
- Wellcome Trust Centre for Cell-Matrix Research, University of Manchester, Manchester M13 9PT, UK
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