1
|
Vo NDN, Gaßler N, Wolf G, Loeffler I. The Role of Collagen VIII in the Aging Mouse Kidney. Int J Mol Sci 2024; 25:4805. [PMID: 38732023 PMCID: PMC11084264 DOI: 10.3390/ijms25094805] [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: 03/15/2024] [Revised: 04/25/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
The gradual loss of kidney function due to increasing age is accompanied by structural changes such as fibrosis of the tissue. The underlying molecular mechanisms are complex, but not yet fully understood. Non-fibrillar collagen type VIII (COL8) could be a potential factor in the fibrosis processes of the aging kidney. A pathophysiological significance of COL8 has already been demonstrated in the context of diabetic kidney disease, with studies showing that it directly influences both the development and progression of renal fibrosis occurring. The aim of this study was to investigate whether COL8 impacts age-related micro-anatomical and functional changes in a mouse model. The kidneys of wild-type (Col8-wt) and COL8-knockout (Col8-ko) mice of different age and sex were characterized with regard to the expression of molecular fibrosis markers, the development of nephrosclerosis and renal function. The age-dependent regulation of COL8 mRNA expression in the wild-type revealed sex-dependent effects that were not observed with collagen IV (COL4). Histochemical staining and protein analysis of profibrotic cytokines TGF-β1 (transforming growth factor) and CTGF (connective tissue growth factor) in mouse kidneys showed significant age effects as well as interactions of the factors age, sex and Col8 genotype. There were also significant age and Col8 genotype effects in the renal function data analyzed by urinary cystatin C. In summary, the present study shows, for the first time, that COL8 is regulated in an age- and sex-dependent manner in the mouse kidney and that the expression of COL8 influences the severity of age-induced renal fibrosis and function.
Collapse
Affiliation(s)
- Ngoc Dong Nhi Vo
- Department of Internal Medicine III, University Hospital Jena, 07745 Jena, Germany; (N.D.N.V.); (G.W.)
| | - Nikolaus Gaßler
- Institute of Forensic Medicine, Section Pathology, University Hospital Jena, 07745 Jena, Germany;
| | - Gunter Wolf
- Department of Internal Medicine III, University Hospital Jena, 07745 Jena, Germany; (N.D.N.V.); (G.W.)
| | - Ivonne Loeffler
- Department of Internal Medicine III, University Hospital Jena, 07745 Jena, Germany; (N.D.N.V.); (G.W.)
| |
Collapse
|
2
|
Jansen I, Cahalane R, Hengst R, Akyildiz A, Farrell E, Gijsen F, Aikawa E, van der Heiden K, Wissing T. The interplay of collagen, macrophages, and microcalcification in atherosclerotic plaque cap rupture mechanics. Basic Res Cardiol 2024; 119:193-213. [PMID: 38329498 PMCID: PMC11008085 DOI: 10.1007/s00395-024-01033-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 01/17/2024] [Accepted: 01/19/2024] [Indexed: 02/09/2024]
Abstract
The rupture of an atherosclerotic plaque cap overlying a lipid pool and/or necrotic core can lead to thrombotic cardiovascular events. In essence, the rupture of the plaque cap is a mechanical event, which occurs when the local stress exceeds the local tissue strength. However, due to inter- and intra-cap heterogeneity, the resulting ultimate cap strength varies, causing proper assessment of the plaque at risk of rupture to be lacking. Important players involved in tissue strength include the load-bearing collagenous matrix, macrophages, as major promoters of extracellular matrix degradation, and microcalcifications, deposits that can exacerbate local stress, increasing tissue propensity for rupture. This review summarizes the role of these components individually in tissue mechanics, along with the interplay between them. We argue that to be able to improve risk assessment, a better understanding of the effect of these individual components, as well as their reciprocal relationships on cap mechanics, is required. Finally, we discuss potential future steps, including a holistic multidisciplinary approach, multifactorial 3D in vitro model systems, and advancements in imaging techniques. The obtained knowledge will ultimately serve as input to help diagnose, prevent, and treat atherosclerotic cap rupture.
Collapse
Affiliation(s)
- Imke Jansen
- Department of Biomedical Engineering, Thorax Center Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Rachel Cahalane
- Mechanobiology and Medical Device Research Group (MMDRG), Biomedical Engineering, College of Science and Engineering, University of Galway, Galway, Ireland
- Division of Cardiovascular Medicine, Department of Medicine, Center for Interdisciplinary Cardiovascular Sciences Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Ranmadusha Hengst
- Department of Biomedical Engineering, Thorax Center Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Ali Akyildiz
- Department of Biomedical Engineering, Thorax Center Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Biomechanical Engineering, Technical University Delft, Delft, The Netherlands
| | - Eric Farrell
- Department of Oral and Maxillofacial Surgery, Erasmus Medical Centre, Rotterdam, The Netherlands
| | - Frank Gijsen
- Department of Biomedical Engineering, Thorax Center Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Biomechanical Engineering, Technical University Delft, Delft, The Netherlands
| | - Elena Aikawa
- Division of Cardiovascular Medicine, Department of Medicine, Center for Interdisciplinary Cardiovascular Sciences Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kim van der Heiden
- Department of Biomedical Engineering, Thorax Center Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Tamar Wissing
- Department of Biomedical Engineering, Thorax Center Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.
| |
Collapse
|
3
|
Gromadziński L, Paukszto Ł, Lepiarczyk E, Skowrońska A, Lipka A, Makowczenko KG, Łopieńska-Biernat E, Jastrzębski JP, Holak P, Smoliński M, Majewska M. Pulmonary artery embolism: comprehensive transcriptomic analysis in understanding the pathogenic mechanisms of the disease. BMC Genomics 2023; 24:10. [PMID: 36624378 PMCID: PMC9830730 DOI: 10.1186/s12864-023-09110-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 01/02/2023] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Pulmonary embolism (PE) is a severe disease that usually originates from deep vein thrombosis (DVT) of the lower extremities. This study set out to investigate the changes in the transcriptome of the pulmonary artery (PA) in the course of the PE in the porcine model. METHODS The study was performed on 11 male pigs: a thrombus was formed in each right femoral vein in six animals, and then was released to induce PE, the remaining five animals served as a control group. In the experimental animals total RNA was isolated from the PA where the blood clot lodged, and in the control group, from the corresponding PA segments. High-throughput RNA sequencing was used to analyse the global changes in the transcriptome of PA with induced PE (PA-E). RESULTS Applied multistep bioinformatics revealed 473 differentially expressed genes (DEGs): 198 upregulated and 275 downregulated. Functional Gene Ontology annotated 347 DEGs into 27 biological processes, 324 to the 11 cellular components and 346 to the 2 molecular functions categories. In the signaling pathway analysis, KEGG 'protein processing in endoplasmic reticulum' was identified for the mRNAs modulated during PE. The same KEGG pathway was also exposed by 8 differentially alternative splicing genes. Within single nucleotide variants, the 61 allele-specific expression variants were localised in the vicinity of the genes that belong to the cellular components of the 'endoplasmic reticulum'. The discovered allele-specific genes were also classified as signatures of the cardiovascular system. CONCLUSIONS The findings of this research provide the first thorough investigation of the changes in the gene expression profile of PA affected by an embolus. Evidence from this study suggests that the disturbed homeostasis in the biosynthesis of proteins in the endoplasmic reticulum plays a major role in the pathogenesis of PE.
Collapse
Affiliation(s)
- Leszek Gromadziński
- grid.412607.60000 0001 2149 6795Department of Cardiology and Internal Medicine, School of Medicine, Collegium Medicum, University of Warmia and Mazury in Olsztyn, Warszawska Str 30, 10-082 Olsztyn, Poland
| | - Łukasz Paukszto
- grid.412607.60000 0001 2149 6795Department of Botany and Nature Protection, University of Warmia and Mazury in Olsztyn, Plac Łódzki 1, 10-727 Olsztyn, Poland
| | - Ewa Lepiarczyk
- grid.412607.60000 0001 2149 6795Department of Human Physiology and Pathophysiology, School of Medicine, Collegium Medicum, University of Warmia and Mazury in Olsztyn, Warszawska Str 30, 10-082 Olsztyn, Poland
| | - Agnieszka Skowrońska
- grid.412607.60000 0001 2149 6795Department of Human Physiology and Pathophysiology, School of Medicine, Collegium Medicum, University of Warmia and Mazury in Olsztyn, Warszawska Str 30, 10-082 Olsztyn, Poland
| | - Aleksandra Lipka
- grid.412607.60000 0001 2149 6795Department of Gynecology, and Obstetrics, School of Medicine, Collegium Medicum, University of Warmia and Mazury in Olsztyn, Żołnierska Str 18, 10-561 Olsztyn, Poland
| | - Karol G. Makowczenko
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland
| | - Elżbieta Łopieńska-Biernat
- grid.412607.60000 0001 2149 6795Department of Biochemistry, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego Str 1A, 10-719 Olsztyn, Poland
| | - Jan P. Jastrzębski
- grid.412607.60000 0001 2149 6795Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego Str 1A, 10-719 Olsztyn-Kortowo, Poland
| | - Piotr Holak
- grid.412607.60000 0001 2149 6795Department of Surgery and Radiology With Clinic, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego Str 14, 10-719 Olsztyn, Poland
| | - Michał Smoliński
- grid.460107.4Clinic of Cardiology and Internal Diseases, University Clinical Hospital in Olsztyn, Warszawska Str 30, 10-082 Olsztyn, Poland
| | - Marta Majewska
- grid.412607.60000 0001 2149 6795Department of Human Physiology and Pathophysiology, School of Medicine, Collegium Medicum, University of Warmia and Mazury in Olsztyn, Warszawska Str 30, 10-082 Olsztyn, Poland
| |
Collapse
|
4
|
Zan X, Li S, Wei S, Gao L, Zhao L, Yan X, Zhao Y, Shi J, Wang Y, Liu R, Zhang Y, Wan Y, Zhou Y. COL8A1 Promotes NSCLC Progression Through IFIT1/IFIT3-Mediated EGFR Activation. Front Oncol 2022; 12:707525. [PMID: 35280763 PMCID: PMC8907630 DOI: 10.3389/fonc.2022.707525] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 01/27/2022] [Indexed: 12/04/2022] Open
Abstract
Activation of EGFR is a major risk factor for non-small cell lung cancer (NSCLC). Understanding the molecular events promoting EGFR activation can help us gain more insights into the progression of NSCLC. In this study, we demonstrate that collagen type VIII alpha 1 chain (COL8A1), an extracellular matrix component, was overexpressed in NSCLC. In NSCLC cells, knockdown of COL8A1 suppressed cell growth, cycle progression, and migration, and induced cell apoptosis. While COL8A1 overexpression promoted cell proliferation and inhibited cell apoptosis. In addition, we found that COL8A1 depletion reduced interferon response signaling and downregulated (IFIT1) and interferon-induced proteins with tetratricopeptide repeats 3 (IFIT3). Moreover, we indicated that COL8A1 could upregulate IFIT1 and IFIT3 mediated EGFR activation in vitro and in vivo. Lastly, there was a positive correlation among COL8A1, IFIT1, and IFIT3 expression, and EGFR activity in patients with NSCLC. Overall, our data demonstrate that COL8A1 contributes to NSCLC proliferation and invasion through EGFR activation, dependent on IFIT1 and IFIT3 expression.
Collapse
Affiliation(s)
- Xiangyi Zan
- Department of Pneumology, The Second Hospital of Lanzhou University, Lanzhou, China.,Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, China
| | - Shuyan Li
- Department of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, China
| | - Shixiong Wei
- Biological Science, University of California, Davis, Davis, CA, United States
| | - Liping Gao
- Department of Pneumology, The Second Hospital of Lanzhou University, Lanzhou, China
| | - Lanting Zhao
- Department of Pneumology, The Second Hospital of Lanzhou University, Lanzhou, China
| | - Xiaoxia Yan
- Department of Pneumology, The Second Hospital of Lanzhou University, Lanzhou, China
| | - Yan Zhao
- Department of Pneumology, The Second Hospital of Lanzhou University, Lanzhou, China
| | - Junnian Shi
- Department of Pneumology, The Second Hospital of Lanzhou University, Lanzhou, China
| | - Yuping Wang
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, China
| | - Rong Liu
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, China
| | - Yuanyi Zhang
- Clinical Medicine, University of South China, Hengyang, China
| | - Yixin Wan
- Department of Pneumology, The Second Hospital of Lanzhou University, Lanzhou, China
| | - Yongning Zhou
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou, China.,Key Laboratory for Gastrointestinal Diseases of Gansu Province, Lanzhou University, Lanzhou, China
| |
Collapse
|
5
|
Simancas Escorcia V, Guillou C, Abbad L, Derrien L, Rodrigues Rezende Costa C, Cannaya V, Benassarou M, Chatziantoniou C, Berdal A, Acevedo AC, Cases O, Cosette P, Kozyraki R. Pathogenesis of Enamel-Renal Syndrome Associated Gingival Fibromatosis: A Proteomic Approach. Front Endocrinol (Lausanne) 2021; 12:752568. [PMID: 34777248 PMCID: PMC8586505 DOI: 10.3389/fendo.2021.752568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/06/2021] [Indexed: 12/24/2022] Open
Abstract
The enamel renal syndrome (ERS) is a rare disorder featured by amelogenesis imperfecta, gingival fibromatosis and nephrocalcinosis. ERS is caused by bi-allelic mutations in the secretory pathway pseudokinase FAM20A. How mutations in FAM20A may modify the gingival connective tissue homeostasis and cause fibromatosis is currently unknown. We here analyzed conditioned media of gingival fibroblasts (GFs) obtained from four unrelated ERS patients carrying distinct mutations and control subjects. Secretomic analysis identified 109 dysregulated proteins whose abundance had increased (69 proteins) or decreased (40 proteins) at least 1.5-fold compared to control GFs. Proteins over-represented were mainly involved in extracellular matrix organization, collagen fibril assembly, and biomineralization whereas those under-represented were extracellular matrix-associated proteins. More specifically, transforming growth factor-beta 2, a member of the TGFβ family involved in both mineralization and fibrosis was strongly increased in samples from GFs of ERS patients and so were various known targets of the TGFβ signaling pathway including Collagens, Matrix metallopeptidase 2 and Fibronectin. For the over-expressed proteins quantitative RT-PCR analysis showed increased transcript levels, suggesting increased synthesis and this was further confirmed at the tissue level. Additional immunohistochemical and western blot analyses showed activation and nuclear localization of the classical TGFβ effector phospho-Smad3 in both ERS gingival tissue and ERS GFs. Exposure of the mutant cells to TGFB1 further upregulated the expression of TGFβ targets suggesting that this pathway could be a central player in the pathogenesis of the ERS gingival fibromatosis. In conclusion our data strongly suggest that TGFβ -induced modifications of the extracellular matrix contribute to the pathogenesis of ERS. To our knowledge this is the first proteomic-based analysis of FAM20A-associated modifications.
Collapse
Affiliation(s)
- Victor Simancas Escorcia
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris, Oral Molecular Pathophysiology, Paris, France
| | - Clément Guillou
- Normandie Université, PISSARO Proteomic Facility, Institute for Research and Innovation in Biomedicine (IRIB), Mont-Saint-Aignan, France
- Normandie Université, UMR670 Centre National de la Recherche Scientifique (CNRS), Mont-Saint-Aignan, France
| | - Lilia Abbad
- UMRS1155, INSERM, Sorbonne Université, Paris, France
| | - Louise Derrien
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris, Oral Molecular Pathophysiology, Paris, France
| | - Claudio Rodrigues Rezende Costa
- Oral Center for Inherited Diseases, University Hospital of Brasília, Oral Histopathology Laboratory, Department of Dentistry, Health Sciences Faculty, University of Brasília (UnB), Brasília, Brazil
| | - Vidjea Cannaya
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris, Oral Molecular Pathophysiology, Paris, France
| | - Mourad Benassarou
- Service de Chirurgie Maxillo-faciale et Stomatologie, Hôpital De la Pitié Salpétrière, Sorbonne Université, Paris, France
| | | | - Ariane Berdal
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris, Oral Molecular Pathophysiology, Paris, France
- Centre de Référence Maladies Rares (CRMR) O-RARES, Hôpital Rothshild, Unité de Formation et de Recherche (UFR) d’Odontologie-Garancière, Université de Paris, Paris, France
| | - Ana Carolina Acevedo
- Oral Center for Inherited Diseases, University Hospital of Brasília, Oral Histopathology Laboratory, Department of Dentistry, Health Sciences Faculty, University of Brasília (UnB), Brasília, Brazil
| | - Olivier Cases
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris, Oral Molecular Pathophysiology, Paris, France
| | - Pascal Cosette
- Normandie Université, PISSARO Proteomic Facility, Institute for Research and Innovation in Biomedicine (IRIB), Mont-Saint-Aignan, France
- Normandie Université, UMR670 Centre National de la Recherche Scientifique (CNRS), Mont-Saint-Aignan, France
| | - Renata Kozyraki
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris, Oral Molecular Pathophysiology, Paris, France
- Centre de Référence Maladies Rares (CRMR) O-RARES, Hôpital Rothshild, Unité de Formation et de Recherche (UFR) d’Odontologie-Garancière, Université de Paris, Paris, France
| |
Collapse
|
6
|
Hwang JS, Ma DJ, Choi J, Shin YJ. COL8A2 Regulates the Fate of Corneal Endothelial Cells. Invest Ophthalmol Vis Sci 2021; 61:26. [PMID: 32931574 PMCID: PMC7500139 DOI: 10.1167/iovs.61.11.26] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Purpose To investigate the effect of COL8A2 repression on corneal endothelial cells (CECs) in vitro and in vivo. Methods Cultured human CECs (hCECs) were transfected with COL8A2 siRNA (siCOL8A2), and the cell viability and proliferation rate were measured. The expression of cell proliferation–associated molecules was evaluated by Western blotting and real-time reverse transcription PCR. Cell shape, Wingless-INT (WNT) signaling, and mitochondrial oxidative stress were also measured. For in vivo experiments, siCOL8A2 was transfected into rat CECs (rCECs), and corneal opacity and corneal endothelium were evaluated. Results After transfection with siCOL8A2, COL8A2 expression was reduced (80%). Cell viability, cell proliferation rate, cyclin D1 expression, and the number of cells in the S-phase were reduced in siCOL8A2-treated cells. The cell attained a fibroblast-like shape, and SNAI1, pSMAD2, and β-catenin expression, along with mitochondrial mass and oxidative stress levels, were altered. Corneal opacity increased, and the CECs were changed in rats in the siCOL8A2 group. Conclusions COL8A2 is required to maintain normal wound healing and CEC function.
Collapse
Affiliation(s)
- Jin Sun Hwang
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Dae Joong Ma
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Jinju Choi
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Young Joo Shin
- Department of Ophthalmology, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Republic of Korea
| |
Collapse
|
7
|
Bao H, Li ZT, Xu LH, Su TY, Han Y, Bao M, Liu Z, Fan YJ, Lou Y, Chen Y, Jiang ZL, Gong XB, Qi YX. Platelet-Derived Extracellular Vesicles Increase Col8a1 Secretion and Vascular Stiffness in Intimal Injury. Front Cell Dev Biol 2021; 9:641763. [PMID: 33738288 PMCID: PMC7960786 DOI: 10.3389/fcell.2021.641763] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 02/09/2021] [Indexed: 12/31/2022] Open
Abstract
The arterial mechanical microenvironment, including stiffness, is a crucial pathophysiological feature of vascular remodeling, such as neointimal hyperplasia after carotid endarterectomy and balloon dilatation surgeries. In this study, we examined changes in neointimal stiffness in a Sprague-Dawley rat carotid artery intimal injury model and revealed that extracellular matrix (ECM) secretion and vascular stiffness were increased. Once the endothelial layer is damaged in vivo, activated platelets adhere to the intima and may secrete platelet-derived extracellular vesicles (pEVs) and communicate with vascular smooth muscle cells (VSMCs). In vitro, pEVs stimulated VSMCs to promote collagen secretion and cell adhesion. MRNA sequencing analysis of a carotid artery intimal injury model showed that ECM factors, including col8a1, col8a2, col12a1, and elastin, were upregulated. Subsequently, ingenuity pathway analysis (IPA) was used to examine the possible signaling pathways involved in the formation of ECM, of which the Akt pathway played a central role. In vitro, pEVs activated Akt signaling through the PIP3 pathway and induced the production of Col8a1. MicroRNA (miR) sequencing of pEVs released from activated platelets revealed that 14 of the top 30 miRs in pEVs targeted PTEN, which could promote the activation of the Akt pathway. Further research showed that the most abundant miR targeting PTEN was miR-92a-3p, which promoted Col8a1 expression. Interestingly, knockdown of Col8a1 expression in vivo abrogated the increase in carotid artery stiffness and simultaneously increased the degree of neointimal hyperplasia. Our results revealed that pEVs may deliver miR-92a-3p to VSMCs to induce the production and secretion of Col8a1 via the PTEN/PIP3/Akt pathway, subsequently increasing vascular stiffness. Therefore, pEVs and key molecules may be potential therapeutic targets for treating neointimal hyperplasia.
Collapse
Affiliation(s)
- Han Bao
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China.,Key Laboratory of Hydrodynamics (Ministry of Education), Department of Engineering Mechanics, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Zi-Tong Li
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Lei-Han Xu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China.,Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, China
| | - Tong-Yue Su
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China.,Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, China
| | - Yue Han
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Min Bao
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Ze Liu
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yang-Jing Fan
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yue Lou
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yi Chen
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Zong-Lai Jiang
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Xiao-Bo Gong
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China.,Key Laboratory of Hydrodynamics (Ministry of Education), Department of Engineering Mechanics, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Ying-Xin Qi
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China.,Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China.,Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, China
| |
Collapse
|
8
|
Zhou J, Song Y, Gan W, Liu L, Chen G, Chen Z, Luo G, Zhang L, Zhang G, Wang P, Cao Y. Upregulation of COL8A1 indicates poor prognosis across human cancer types and promotes the proliferation of gastric cancer cells. Oncol Lett 2020; 20:34. [PMID: 32774507 PMCID: PMC7405348 DOI: 10.3892/ol.2020.11895] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 01/13/2020] [Indexed: 12/24/2022] Open
Abstract
Gastric cancer (GC) was one of the most common types of the digestive system. COL8A1 was reported to be associated with cancer progression. The present study showed COL8A1 was overexpressed and correlated to shorter overall survival (OS) time across human cancer types. Specially, our results showed COL8A1 was up-regulated in advanced stage GC compared to low stage GC samples. Higher expression of COL8A1 was significantly correlated to shorter OS time in patients with GC. Bioinformatics analysis revealed COL8A1 was involved in regulating cell proliferation and metastasis. Experimental validations of COL8A1 showed that silencing of COL8A1 could significantly suppressed cell proliferation, migration and invasion in GC. These results provided a potential target for the clinical prognosis and treatment of gastric cancer.
Collapse
Affiliation(s)
- Jun Zhou
- Department of Gastrointestinal Surgery, The General Hospital of Western Theater Command, Chengdu, Sichuan 610083, P.R. China
| | - Yaning Song
- Department of Gastrointestinal Surgery, The General Hospital of Western Theater Command, Chengdu, Sichuan 610083, P.R. China
| | - Wei Gan
- Department of Gastrointestinal Surgery, The General Hospital of Western Theater Command, Chengdu, Sichuan 610083, P.R. China
| | - Liye Liu
- Department of Gastrointestinal Surgery, The General Hospital of Western Theater Command, Chengdu, Sichuan 610083, P.R. China
| | - Guibing Chen
- Department of Gastrointestinal Surgery, The General Hospital of Western Theater Command, Chengdu, Sichuan 610083, P.R. China
| | - Zhenyu Chen
- Department of Gastrointestinal Surgery, The General Hospital of Western Theater Command, Chengdu, Sichuan 610083, P.R. China
| | - Guode Luo
- Department of Gastrointestinal Surgery, The General Hospital of Western Theater Command, Chengdu, Sichuan 610083, P.R. China
| | - Lin Zhang
- Department of Gastrointestinal Surgery, The General Hospital of Western Theater Command, Chengdu, Sichuan 610083, P.R. China
| | - Guohu Zhang
- Department of Gastrointestinal Surgery, The General Hospital of Western Theater Command, Chengdu, Sichuan 610083, P.R. China
| | - Peihong Wang
- Department of Gastrointestinal Surgery, The General Hospital of Western Theater Command, Chengdu, Sichuan 610083, P.R. China
| | - Yongkuan Cao
- Department of Gastrointestinal Surgery, The General Hospital of Western Theater Command, Chengdu, Sichuan 610083, P.R. China
| |
Collapse
|
9
|
Patil MS, Cartland SP, Kavurma MM. TRAIL signals, extracellular matrix and vessel remodelling. VASCULAR BIOLOGY 2020; 2:R73-R84. [PMID: 32923976 PMCID: PMC7439926 DOI: 10.1530/vb-20-0005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 06/15/2020] [Indexed: 12/26/2022]
Abstract
The extracellular matrix (ECM) is an essential part of the vasculature, not only providing structural support to the blood vessel wall, but also in its ability to interact with cells to regulate cell phenotype and function including proliferation, migration, differentiation and death – processes important in vascular remodelling. Increasing evidence implicates TNF-related apoptosis-inducing ligand (TRAIL) signalling in the modulation of vascular cell function and remodelling under normal and pathological conditions such as in atherosclerosis. TRAIL can also stimulate synthesis of multiple ECM components within blood vessels. This review explores the relationship between TRAIL signals, the ECM, and its implications in vessel remodelling in cardiovascular disease.
Collapse
Affiliation(s)
- Manisha S Patil
- Heart Research Institute, Sydney, Australia.,Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | - Siân P Cartland
- Heart Research Institute, Sydney, Australia.,Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | - Mary M Kavurma
- Heart Research Institute, Sydney, Australia.,Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| |
Collapse
|
10
|
Rong N, Mistriotis P, Wang X, Tseropoulos G, Rajabian N, Zhang Y, Wang J, Liu S, Andreadis ST. Restoring extracellular matrix synthesis in senescent stem cells. FASEB J 2019; 33:10954-10965. [PMID: 31287964 PMCID: PMC6766659 DOI: 10.1096/fj.201900377r] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 06/10/2019] [Indexed: 01/13/2023]
Abstract
Collagen type III (COL3) is one of the 3 major collagens in the body, and loss of expression or mutations in the COL3 gene have been associated with the onset of vascular diseases such the Ehlers-Danlos syndrome. Previous work reported a significant reduction of COL3 in tissues such as skin and vessels with aging. In agreement, we found that COL3 was significantly reduced in senescent human mesenchymal stem cells and myofibroblasts derived from patients with Hutchinson-Gilford progeria syndrome, a premature aging syndrome. Most notably, we discovered that ectopic expression of the embryonic transcription factor Nanog homeobox (NANOG) restored COL3 expression by restoring the activity of the TGF-β pathway that was impaired in senescent cells. RNA sequencing analysis showed that genes associated with the activation of the TGF-β pathway were up-regulated, whereas negative regulators of the pathway were down-regulated upon NANOG expression. Chromatin immunoprecipitation sequencing and immunoprecipitation experiments revealed that NANOG bound to the mothers against decapentaplegic (SMAD)2 and SMAD3 promoters, in agreement with increased expression and phosphorylation levels of both proteins. Using chemical inhibition, short hairpin RNA knockdown, and gain of function approaches, we established that both SMAD2 and SMAD3 were necessary to mediate the effects of NANOG, but SMAD3 overexpression was also sufficient for COL3 production. In summary, NANOG restored production of COL3, which was impaired by cellular aging, suggesting novel strategies to restore the impaired extracellular matrix production and biomechanical function of aged tissues, with potential implications for regenerative medicine and anti-aging treatments.-Rong, N., Mistriotis, P., Wang, X., Tseropoulos, G., Rajabian, N., Zhang, Y., Wang, J., Liu, S., Andreadis, S. T. Restoring extracellular matrix synthesis in senescent stem cells.
Collapse
Affiliation(s)
- Na Rong
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, New York, USA
| | - Panagiotis Mistriotis
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, New York, USA
| | - Xiaoyan Wang
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, New York, USA
| | - Georgios Tseropoulos
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, New York, USA
| | - Nika Rajabian
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, New York, USA
| | - Yali Zhang
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Jianmin Wang
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Song Liu
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Stelios T. Andreadis
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, New York, USA
- Department of Biomedical Engineering, University at Buffalo, Buffalo, New York, USA
- Center of Excellence in Bioinformatics and Life Sciences, Buffalo, New York, USA
| |
Collapse
|
11
|
Rasheeda K, Muvva C, Fathima NN. Governing the Inhibition of Reconstituted Collagen Type I Assemblies Mediated Through Noncovalent Forces of (±)-α Lipoic Acid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:980-989. [PMID: 30621400 DOI: 10.1021/acs.langmuir.8b03539] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Type I collagen is a fibrous protein, which is highly biocompatible and biodegradable and exhibits low immunogenicity with its unique feature of undergoing a spontaneous self-assembly process. However, the excessive accumulation of collagen may lead to a condition known as fibrosis in vertebrates. Recently, saturated fatty acids have gained much attention as biomedical and therapeutic agents. Therefore, drawing inspiration from the biological and structural tunability of these fatty acids, this work aims to inhibit the self-assembly of type I collagen using (±)-α-lipoic acid (ALA). Reconstituted collagen and its blends with (±)-ALA under physiological conditions were subjected to fibril growth kinetics measurements, which exhibited the decrease in the rate of fibrillogenesis ( t1/2) with an increase in the concentration of ALA. Variations in the viscoelasticity of collagen and ALA blend with respect to rate and frequency showed significant changes. Further, the frequency shifts of different functional groups via FT-IR (ATR) and the morphological changes associated with fibril inhibition were visualized using a cryoscanning electron microscope. Molecular dynamics simulation of the collagen-like peptide with the (±)-ALA molecule at different molar ratios proved that (±)-ALA had a strong potential to bind at various sites of collagen mediated by conventional secondary or noncovalent forces. Thus, the protein-small molecule interaction dominates the forces prevailing between protein-protein binding, leading to the inhibition of the self-assembly process. Such inhibitory effects by a fatty acid may unfold newer avenues for development of targeted and sustainable drug delivery systems for fibrotic diseases.
Collapse
Affiliation(s)
- K Rasheeda
- Inorganic and Physical Chemistry Laboratory , Central Leather Research Institute, Council of Scientific and Industrial Research , Chennai 600020 , India
| | - Charuvaka Muvva
- Inorganic and Physical Chemistry Laboratory , Central Leather Research Institute, Council of Scientific and Industrial Research , Chennai 600020 , India
| | - Nishter Nishad Fathima
- Inorganic and Physical Chemistry Laboratory , Central Leather Research Institute, Council of Scientific and Industrial Research , Chennai 600020 , India
| |
Collapse
|
12
|
Gene expression profiles reveal key genes for early diagnosis and treatment of adamantinomatous craniopharyngioma. Cancer Gene Ther 2018; 25:227-239. [PMID: 29681617 DOI: 10.1038/s41417-018-0015-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 01/03/2018] [Accepted: 01/06/2018] [Indexed: 11/08/2022]
Abstract
Adamantinomatous craniopharyngioma (ACP) is an aggressive brain tumor that occurs predominantly in the pediatric population. Conventional diagnosis method and standard therapy cannot treat ACPs effectively. In this paper, we aimed to identify key genes for ACP early diagnosis and treatment. Datasets GSE94349 and GSE68015 were obtained from Gene Expression Omnibus database. Consensus clustering was applied to discover the gene clusters in the expression data of GSE94349 and functional enrichment analysis was performed on gene set in each cluster. The protein-protein interaction (PPI) network was built by the Search Tool for the Retrieval of Interacting Genes, and hubs were selected. Support vector machine (SVM) model was built based on the signature genes identified from enrichment analysis and PPI network. Dataset GSE94349 was used for training and testing, and GSE68015 was used for validation. Besides, RT-qPCR analysis was performed to analyze the expression of signature genes in ACP samples compared with normal controls. Seven gene clusters were discovered in the differentially expressed genes identified from GSE94349 dataset. Enrichment analysis of each cluster identified 25 pathways that highly associated with ACP. PPI network was built and 46 hubs were determined. Twenty-five pathway-related genes that overlapped with the hubs in PPI network were used as signatures to establish the SVM diagnosis model for ACP. The prediction accuracy of SVM model for training, testing, and validation data were 94, 85, and 74%, respectively. The expression of CDH1, CCL2, ITGA2, COL8A1, COL6A2, and COL6A3 were significantly upregulated in ACP tumor samples, while CAMK2A, RIMS1, NEFL, SYT1, and STX1A were significantly downregulated, which were consistent with the differentially expressed gene analysis. SVM model is a promising classification tool for screening and early diagnosis of ACP. The ACP-related pathways and signature genes will advance our knowledge of ACP pathogenesis and benefit the therapy improvement.
Collapse
|
13
|
Barrett AS, Maller O, Pickup MW, Weaver VM, Hansen KC. Compartment resolved proteomics reveals a dynamic matrisome in a biomechanically driven model of pancreatic ductal adenocarcinoma. JOURNAL OF IMMUNOLOGY AND REGENERATIVE MEDICINE 2018; 1:67-75. [PMID: 36908331 PMCID: PMC10003644 DOI: 10.1016/j.regen.2018.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is characterized by a severe fibrotic component that compromises treatment, alters the immune cell profile and contributes to patient mortality. It has been shown that early on in this process, dynamic changes in tissue biomechanics play an integral role in supporting pancreatic cancer development and progression. Despite the acknowledgement of its importance, a granular view of how stromal composition changes during the course of PDAC progression remains largely unknown. To mimic the quasi-mesenchymal phenotype and pronounced desmoplastic response observed clinically, we utilized a genetically engineered mouse model of PDAC that is driven by a KrasG12D mutation and loss of Tgfbr2 expression. Application of compartment resolved proteomics revealed that PDAC progression in this KTC model is associated with dynamic stromal alterations that are indicative of a wound healing program. We identified an early provisional matricellular fibrosis that was accompanied by markers of macrophage activation and infiltration, consistent with the inflammatory phase of wound healing. At 20 weeks a proliferative phenotype was observed with increased fibroblast markers, further collagen deposition and loss of basement membrane and native cell markers.
Collapse
Affiliation(s)
- Alexander S Barrett
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, Colorado, USA
| | - Ori Maller
- Department of Surgery, University of California San Francisco, San Francisco, California, USA
| | - Michael W Pickup
- Department of Surgery, University of California San Francisco, San Francisco, California, USA
| | - Valerie M Weaver
- Department of Surgery, University of California San Francisco, San Francisco, California, USA
| | - Kirk C Hansen
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, Colorado, USA
| |
Collapse
|
14
|
Anand BG, Dubey K, Shekhawat DS, Prajapati KP, Kar K. Strategically Designed Antifibrotic Gold Nanoparticles to Prevent Collagen Fibril Formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13252-13261. [PMID: 29072918 DOI: 10.1021/acs.langmuir.7b01504] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Because uncontrolled accumulation of collagen fibrils has been implicated in a series of pathologies, inhibition of collagen fibril formation has become one of the necessary strategies to target such collagen-linked complications. The presence of hydroxyproline (Hyp) at the Y position in (Gly-X-Y)n sequence pattern of collagen is known to facilitate crucial hydrophobic and hydration-linked interactions that promote collagen fibril formation. Here, to target such Hyp-mediated interactions, we have synthesized uniform, thermostable, and hemocompatible Hyp coated gold nanoparticles (AuNPsHYP) and have examined their inhibition effect on the fibril formation of type I collagen. We found that collagen fibril formation is strongly suppressed in the presence of AuNPsHYP and no such suppression effect was observed in the presence of free Hyp and control Gly-coated nanoparticles at similar concentrations. Both isothermal titration calorimetric studies and bioinformatics analysis reveal possible interaction between Hyp and (Gly-Pro-Hyp) stretches of collagen triple-helical model peptides. Further, gold nanoparticles coated with proline (AuNPsPRO) and tryptophan (AuNPsTRP) also suppressed collagen fibril formation, suggesting their ability to interfere with aromatic-proline as well as hydrophobic interactions between collagen molecules. The Hyp molecules, when surface functionalized, are predicted to interfere with the Hyp-mediated forces that drive collagen self-assembly, and such inhibition effect may help in targeting collagen linked pathologies.
Collapse
Affiliation(s)
- Bibin Ganadhason Anand
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur , Jodhpur, Rajasthan-342011, India
| | - Kriti Dubey
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur , Jodhpur, Rajasthan-342011, India
| | - Dolat Singh Shekhawat
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur , Jodhpur, Rajasthan-342011, India
| | | | - Karunakar Kar
- School of Life Sciences, Jawaharlal Nehru University , New Delhi-110067, India
| |
Collapse
|
15
|
Urner S, Kelly-Goss M, Peirce SM, Lammert E. Mechanotransduction in Blood and Lymphatic Vascular Development and Disease. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2017; 81:155-208. [PMID: 29310798 DOI: 10.1016/bs.apha.2017.08.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The blood and lymphatic vasculatures are hierarchical networks of vessels, which constantly transport fluids and, therefore, are exposed to a variety of mechanical forces. Considering the role of mechanotransduction is key for fully understanding how these vascular systems develop, function, and how vascular pathologies evolve. During embryonic development, for example, initiation of blood flow is essential for early vascular remodeling, and increased interstitial fluid pressure as well as initiation of lymph flow is needed for proper development and maturation of the lymphatic vasculature. In this review, we introduce specific mechanical forces that affect both the blood and lymphatic vasculatures, including longitudinal and circumferential stretch, as well as shear stress. In addition, we provide an overview of the role of mechanotransduction during atherosclerosis and secondary lymphedema, which both trigger tissue fibrosis.
Collapse
Affiliation(s)
- Sofia Urner
- Institute of Metabolic Physiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Molly Kelly-Goss
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States
| | - Eckhard Lammert
- Institute of Metabolic Physiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany; Institute for Beta Cell Biology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University, Düsseldorf, Germany.
| |
Collapse
|
16
|
Wu Z, Rademakers T, Kiessling F, Vogt M, Westein E, Weber C, Megens RT, van Zandvoort M. Multi-photon microscopy in cardiovascular research. Methods 2017; 130:79-89. [DOI: 10.1016/j.ymeth.2017.04.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 03/27/2017] [Accepted: 04/11/2017] [Indexed: 01/26/2023] Open
|
17
|
Reimann C, Brangsch J, Colletini F, Walter T, Hamm B, Botnar RM, Makowski MR. Molecular imaging of the extracellular matrix in the context of atherosclerosis. Adv Drug Deliv Rev 2017; 113:49-60. [PMID: 27639968 DOI: 10.1016/j.addr.2016.09.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 09/01/2016] [Accepted: 09/07/2016] [Indexed: 12/25/2022]
Abstract
This review summarizes the current status of molecular imaging of the extracellular matrix (ECM) in the context of atherosclerosis. Apart from cellular components, the ECM of the atherosclerotic plaque plays a relevant role during the initiation of atherosclerosis and its' subsequent progression. Important structural and signaling components of the ECM include elastin, collagen and fibrin. However, the ECM not only plays a structural role in the arterial wall but also interacts with different cell types and has important biological signaling functions. Molecular imaging of the ECM has emerged as a new diagnostic tool to characterize biological aspects of atherosclerotic plaques, which cannot be characterized by current clinically established imaging techniques, such as X-ray angiography. Different types of molecular probes can be detected in vivo by imaging modalities such as magnetic resonance imaging (MRI), positron emission tomography (PET) and single photon emission computed tomography (SPECT). The modality specific signaling component of the molecular probe provides information about its spatial location and local concentration. The successful introduction of molecular imaging into clinical practice and guidelines could open new pathways for an earlier detection of disease processes and a better understanding of the disease state on a biological level. Quantitative in vivo molecular parameters could also contribute to the development and evaluation of novel cardiovascular therapeutic interventions and the assessment of response to treatment.
Collapse
Affiliation(s)
| | | | | | - Thula Walter
- Department of Radiology, Charité, Berlin, Germany
| | - Bernd Hamm
- Department of Radiology, Charité, Berlin, Germany
| | - Rene M Botnar
- King's College London, Division of Imaging Sciences, United Kingdom; Wellcome Trust and EPSRC Medical Engineering Center, United Kingdom; BHF Centre of Excellence, King's College London, London, United Kingdom; NIHR Biomedical Research Centre, King's College London, London, United Kingdom
| | - Marcus R Makowski
- Department of Radiology, Charité, Berlin, Germany; King's College London, Division of Imaging Sciences, United Kingdom.
| |
Collapse
|
18
|
Seet LF, Toh LZ, Chu SWL, Finger SN, Chua JLL, Wong TT. Upregulation of distinct collagen transcripts in post-surgery scar tissue: a study of conjunctival fibrosis. Dis Model Mech 2017; 10:751-760. [PMID: 28331057 PMCID: PMC5483006 DOI: 10.1242/dmm.028555] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 03/09/2017] [Indexed: 01/07/2023] Open
Abstract
Excessive accumulation of collagen is often used to assess the development of fibrosis. This study aims to identify collagen genes that define fibrosis in the conjunctiva following glaucoma filtration surgery (GFS). Using the mouse model of GFS, we have identified collagen transcripts that were upregulated in the fibrotic phase of wound healing via RNA-seq. The collagen transcripts that were increased the most were encoded by Col8a1, Col11a1 and Col8a2. Further analysis of the Col8a1, Col11a1 and Col8a2 transcripts revealed their increase by 67-, 54- and 18-fold, respectively, in the fibrotic phase, compared with 12-fold for Col1a1, the most commonly evaluated collagen gene for fibrosis. However, only type I collagen was significantly upregulated at the protein level in the fibrotic phase. Type VIII and type I collagens colocalized in fibrous structures and in ACTA2-positive pericytes, and appeared to compensate for each other in expression levels. Type XI collagen showed low colocalization with both type VIII and type I collagens but can be found in association with macrophages. Furthermore, we show that both mouse and human conjunctival fibroblasts expressed elevated levels of the most highly expressed collagen genes in response to TGFβ2 treatment. Importantly, conjunctival tissues from individuals whose GF surgeries have failed due to scarring showed 3.60- and 2.78-fold increases in type VIII and I collagen transcripts, respectively, compared with those from individuals with no prior surgeries. These data demonstrate that distinct collagen transcripts are expressed at high levels in the conjunctiva after surgery and their unique expression profiles may imply differential influences on the fibrotic outcome. Summary: As well as providing an objective quantitative measure, distinct collagen genes may further aid in the characterization and definition of the development of fibrosis.
Collapse
Affiliation(s)
- Li-Fong Seet
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, 20 College Road, Singapore 169856 .,Duke-NUS Medical School, 8 College Road, Singapore 169857.,Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, 5 Lower Kent Ridge Rd, National University Hospital, Singapore 119074
| | - Li Zhen Toh
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, 20 College Road, Singapore 169856
| | - Stephanie W L Chu
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, 20 College Road, Singapore 169856
| | - Sharon N Finger
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, 20 College Road, Singapore 169856
| | - Jocelyn L L Chua
- Glaucoma Service, Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751
| | - Tina T Wong
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, 20 College Road, Singapore 169856 .,Duke-NUS Medical School, 8 College Road, Singapore 169857.,Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, 5 Lower Kent Ridge Rd, National University Hospital, Singapore 119074.,Glaucoma Service, Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751.,School of Materials Science and Engineering, Nanyang Technological University, 11 Faculty Ave, Singapore 639977
| |
Collapse
|
19
|
Durgin BG, Cherepanova OA, Gomez D, Karaoli T, Alencar GF, Butcher JT, Zhou YQ, Bendeck MP, Isakson BE, Owens GK, Connelly JJ. Smooth muscle cell-specific deletion of Col15a1 unexpectedly leads to impaired development of advanced atherosclerotic lesions. Am J Physiol Heart Circ Physiol 2017; 312:H943-H958. [PMID: 28283548 PMCID: PMC5451587 DOI: 10.1152/ajpheart.00029.2017] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 03/06/2017] [Accepted: 03/06/2017] [Indexed: 12/28/2022]
Abstract
Atherosclerotic plaque rupture with subsequent embolic events is a major cause of sudden death from myocardial infarction or stroke. Although smooth muscle cells (SMCs) produce and respond to collagens in vitro, there is no direct evidence in vivo that SMCs are a crucial source of collagens and that this impacts lesion development or fibrous cap formation. We sought to determine how conditional SMC-specific knockout of collagen type XV (COL15A1) in SMC lineage tracing mice affects advanced lesion formation given that 1) we have previously identified a Col15a1 sequence variant associated with age-related atherosclerosis, 2) COL15A1 is a matrix organizer enhancing tissue structural integrity, and 3) small interfering RNA-mediated Col15a1 knockdown increased migration and decreased proliferation of cultured human SMCs. We hypothesized that SMC-derived COL15A1 is critical in advanced lesions, specifically in fibrous cap formation. Surprisingly, we demonstrated that SMC-specific Col15a1 knockout mice fed a Western diet for 18 wk failed to form advanced lesions. SMC-specific Col15a1 knockout resulted in lesions reduced in size by 78%, with marked reductions in numbers and proliferating SMCs, and lacked a SMC and extracellular matrix-rich lesion or fibrous cap. In vivo RNA-seq analyses on SMC Col15a1 knockout and wild-type lesions suggested that a mechanism for these effects is through global repression of multiple proatherogenic inflammatory pathways involved in lesion development. These results provide the first direct evidence that a SMC-derived collagen, COL15A1, is critical during lesion pathogenesis, but, contrary to expectations, its loss resulted in marked attenuation rather than exacerbation of lesion pathogenesis.NEW & NOTEWORTHY We report the first direct in vivo evidence that a smooth muscle cell (SMC)-produced collagen, collagen type XV (COL15A1), is critical for atherosclerotic lesion development. SMC Col15a1 knockout markedly attenuated advanced lesion formation, likely through reducing SMC proliferation and impairing multiple proatherogenic inflammatory processes.
Collapse
Affiliation(s)
- Brittany G Durgin
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia.,Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia
| | - Olga A Cherepanova
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia.,Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia
| | - Delphine Gomez
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia.,Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia
| | - Themistoclis Karaoli
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia
| | - Gabriel F Alencar
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia.,Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, Virginia
| | - Joshua T Butcher
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia.,Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia
| | - Yu-Qing Zhou
- Department of Laboratory Medicine and Pathobiology, Ted Rogers Centre for Heart Research TBEP, University of Toronto, Toronto, Ontario, Canada; and
| | - Michelle P Bendeck
- Department of Laboratory Medicine and Pathobiology, Ted Rogers Centre for Heart Research TBEP, University of Toronto, Toronto, Ontario, Canada; and
| | - Brant E Isakson
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia.,Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia
| | - Gary K Owens
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia.,Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia
| | - Jessica J Connelly
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia; .,Department of Psychology, University of Virginia, Charlottesville, Virginia
| |
Collapse
|
20
|
Kobielarz M, Kozuń M, Kuzan A, Maksymowicz K, Witkiewicz W, Pezowicz C. The intima with early atherosclerotic lesions is load-bearing component of human thoracic aorta. Biocybern Biomed Eng 2017. [DOI: 10.1016/j.bbe.2016.10.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
21
|
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: 22] [Impact Index Per Article: 2.8] [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.
Collapse
|
22
|
Nielsen E. Fuchs' endothelial corneal dystrophy: pathology and treatment outcome. Acta Ophthalmol 2016. [DOI: 10.1111/aos.13311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Esben Nielsen
- Department of Health; Aarhus University; Aarhus Denmark
- Department of Ophthalmology; Aarhus University Hospital; Denmark
| |
Collapse
|
23
|
|
24
|
Patzkowski MS. Peripheral nerve blocks in patients with Ehlers-Danlos syndrome, hypermobility type: a report of 2 cases. J Clin Anesth 2016; 29:50-3. [DOI: 10.1016/j.jclinane.2015.10.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 04/08/2015] [Accepted: 10/19/2015] [Indexed: 10/22/2022]
|
25
|
High Residual Collagen-Induced Platelet Reactivity Predicts Development of Restenosis in the Superficial Femoral Artery After Percutaneous Transluminal Angioplasty in Claudicant Patients. Cardiovasc Intervent Radiol 2015; 39:190-4. [DOI: 10.1007/s00270-015-1172-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 06/18/2015] [Indexed: 11/26/2022]
|
26
|
Koskinen A, Lehtoranta L, Laiho A, Laine J, Kääpä P, Soukka H. Maternal diabetes induces changes in the umbilical cord gene expression. Placenta 2015; 36:767-74. [PMID: 25935091 DOI: 10.1016/j.placenta.2015.04.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 04/06/2015] [Accepted: 04/07/2015] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Since maternal diabetes may affect fetal development and the umbilical cord provides an extension of the fetal vasculature, we decided to investigate cords' biological responses to maternal diabetic milieu. METHODS Using microarray analysis, we determined the gene expression profiles in the umbilical cords of six neonates born to type 1 diabetic mothers and in six control cords. Umbilical cord tissue was collected immediately after elective cesarean section. Expression data were confirmed by real-time polymerase chain reaction (11 genes). Additionally, the same umbilical cords were analyzed histologically. RESULTS Two hundred eighty six genes were differentially expressed in the umbilical cords from diabetic pregnancies compared to the controls (fold change ±1.5 and P < 0.01). Maternal diabetes had a major effect on the expression of genes involved in vascular development (Bone morphogenetic protein 4, Delta-like 1, and Notch homolog 4), vessel wall integrity (Collagen type VIII alpha 1, Myocyte enhancer factor 2C, and Matrix metalloproteinase 2), and vascular function (Natriuretic peptide precursor B, Endothelin 1, Endothelin receptor B, Cyclooxygenase 1, and Phosphodiesterase 5A). Maternal diabetes was associated with thicker umbilical vein intima-media layers and larger umbilical vein and artery intima-media areas compared to the controls. DISCUSSION Maternal diabetic environment seems to alter umbilical cord expression of genes involved in the regulation of vascular development and function with simultaneous umbilical vessel muscle layer thickening. These alterations suggest vascular phenotypic modifications, which in turn may lead to long-term vascular consequences in various tissues in infants of diabetic mothers.
Collapse
Affiliation(s)
- A Koskinen
- Research Centre of Applied and Preventive Cardiovascular Medicine (CAPC), University of Turku, Finland; Department of Pediatrics, Turku University Hospital, Finland.
| | - L Lehtoranta
- Research Centre of Applied and Preventive Cardiovascular Medicine (CAPC), University of Turku, Finland; Department of Obstetrics and Gynecology, Turku University Hospital, Finland
| | - A Laiho
- Turku Centre for Biotechnology, University of Turku, Finland
| | - J Laine
- Department of Pathology, Turku University Hospital, Finland
| | - P Kääpä
- Research Centre of Applied and Preventive Cardiovascular Medicine (CAPC), University of Turku, Finland; Department of Pediatrics, Turku University Hospital, Finland
| | - H Soukka
- Research Centre of Applied and Preventive Cardiovascular Medicine (CAPC), University of Turku, Finland; Department of Pediatrics, Turku University Hospital, Finland
| |
Collapse
|
27
|
Chronic Central Serous Chorioretinopathy Is Associated with Genetic Variants Implicated in Age-Related Macular Degeneration. Ophthalmology 2015; 122:562-70. [DOI: 10.1016/j.ophtha.2014.09.026] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 08/11/2014] [Accepted: 09/19/2014] [Indexed: 12/13/2022] Open
|
28
|
Discoidin domain receptors (DDRs): Potential implications in atherosclerosis. Eur J Pharmacol 2015; 751:28-33. [DOI: 10.1016/j.ejphar.2015.01.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Revised: 01/19/2015] [Accepted: 01/21/2015] [Indexed: 01/15/2023]
|
29
|
Liu X, Huang X, Chen L, Zhang Y, Li M, Wang L, Ge C, Wang H, Zhang M. Mechanical stretch promotes matrix metalloproteinase-2 and prolyl-4-hydroxylase α1 production in human aortic smooth muscle cells via Akt-p38 MAPK-JNK signaling. Int J Biochem Cell Biol 2015; 62:15-23. [PMID: 25712031 DOI: 10.1016/j.biocel.2015.02.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 02/13/2015] [Accepted: 02/14/2015] [Indexed: 12/30/2022]
Abstract
Hypertension can increase mechanical stretch on the vessel wall, an important stimulus that induces collagen remodeling. Prolyl-4-hydroxylaseα1 (P4Hα1) and matrix metalloproteinases (MMPs) are essential for collagen synthesis and degradation. However, the effect of mechanical strain and collagen synthesis remains largely unknown. This study aimed to identify the effect of stretch on MMPs and P4Hα1 and the involved signaling pathways. Human aortic smooth muscle cells (HASMCs) were stimulated with mechanical stretch (0, 10% and 18% strain), and production of P4Hα1 as well as production and gelatinolytic activity of MMP-2 was force-dependently increased. Mechanical stretch at 18% also increased the expression of type I and III collagen and the phosphorylation of Akt, p38 mitogen-activated protein kinase (MAPK) and c-Jun N-terminal kinase (JNK). MMP-2 production and activity enhanced by 18% stretch were inhibited by the PI3K/Akt inhibitor LY294002. Blockade of p38 MAPK or JNK inhibited the promoting effect of stretch on P4Hα1. The in vivo model of aortic banding showed increased protein levels of MMP-2, P4Hα1 and collagen I and III in the aorta. Thus, mechanical stretch increased MMP-2 and P4Hα1 expression in HASMCs via AKT-P38 MAPK-JNK signaling, thereby inducing vascular remodeling.
Collapse
Affiliation(s)
- Xinxin Liu
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, China
| | - Xiaozhen Huang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, China
| | - Liang Chen
- Department of Emergency, Shandong University Qilu Hospital, Jinan, China
| | - Yu Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, China
| | - Mengmeng Li
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, China
| | - Lin Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, China
| | - Cheng Ge
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, China
| | - Han Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, China
| | - Mei Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, China.
| |
Collapse
|
30
|
Capsaicin inhibits collagen fibril formation and increases the stability of collagen fibers. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2014; 44:69-76. [DOI: 10.1007/s00249-014-1002-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Revised: 11/23/2014] [Accepted: 11/27/2014] [Indexed: 12/23/2022]
|
31
|
Shami A, Gonçalves I, Hultgårdh-Nilsson A. Collagen and related extracellular matrix proteins in atherosclerotic plaque development. Curr Opin Lipidol 2014; 25:394-9. [PMID: 25137612 DOI: 10.1097/mol.0000000000000112] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PURPOSE OF REVIEW The structure, composition and turnover of the extracellular matrix (ECM) as well as cell-matrix interactions are crucial in the developing atherosclerotic plaque. There is a need for further insight into specific proteins in the ECM and their functions in the developing plaque, and during the last few years a number of publications have highlighted this very important field of research. These novel findings will be addressed in the present review. RECENT FINDINGS This review covers literature focused on collagen and ECM proteins interacting with collagen, and what their roles may be in plaque development. SUMMARY Acute myocardial infarction and stroke are common diseases that cause disability and mortality, and the underlying mechanism is often the rupture of a vulnerable atherosclerotic plaque. The vascular ECM and the tissue repair in the atherosclerotic lesion are important players in plaque progression. Understanding how specific proteins in the ECM interact with cells in the plaque and affect the fate of the plaque can lead to new treatments for cardiovascular disease.
Collapse
Affiliation(s)
- Annelie Shami
- aDepartment of Experimental Medical Science, Lund University, Lund bDepartments of Clinical Sciences cCardiology, Clinical Sciences, Lund University, Malmoe, Sweden
| | | | | |
Collapse
|
32
|
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.
Collapse
|
33
|
Rahimi N, Swennen G, Verbruggen S, Scibiorek M, Molin DG, Post MJ. Short stimulation of electro-responsive PAA/fibrin hydrogel induces collagen production. Tissue Eng Part C Methods 2014; 20:703-13. [PMID: 24341313 DOI: 10.1089/ten.tec.2013.0596] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Acrylic acid/fibrin hydrogel can mechanically stimulate cells when an external electrical field is applied, enabling them to migrate and align throughout the depth of the gel. The ability of electro-responsive polyacrylic acid (PAA)/fibrin hydrogel to promote collagen production and remodeling has been investigated by three-dimensional (3D) culturing and conditioning of smooth muscle cells (SMCs). SMCs-seeded hydrogels were subjected to an alternating electrical field (0.06 V/mm) for 2 h for one, two, or three times per week during 4 weeks of culturing. Fluorescent images of collagen structure and accumulation, assessed by CNA-35 probe, showed increased collagen content (>100-fold at 1× stimulation/week) in the center of the hydrogels after 4 weeks of culture. The increase in collagen production correlated with increasing extracellular matrix gene expression and resulted in significantly improved mechanical properties of the stimulated hydrogels. Matrix metalloproteinase (MMP)-2 activity was also significantly enhanced by stimulation, which probably has a role in the reorganization of the collagen. Short stimulation (2 h) induced a favorable response in the cells and enhanced tissue formation and integrity of the scaffold by inducing collagen production. The presented set up could be used for conditioning and improving the functionality of current tissue-engineered vascular grafts.
Collapse
Affiliation(s)
- Nastaran Rahimi
- 1 Department of Physiology, Maastricht University , Maastricht, The Netherlands
| | | | | | | | | | | |
Collapse
|
34
|
Karki R, Kim SB, Kim DW. Magnolol inhibits migration of vascular smooth muscle cells via cytoskeletal remodeling pathway to attenuate neointima formation. Exp Cell Res 2013; 319:3238-50. [DOI: 10.1016/j.yexcr.2013.07.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2013] [Revised: 07/11/2013] [Accepted: 07/19/2013] [Indexed: 01/21/2023]
|
35
|
Aldea D, Hanna P, Munoz D, Espinoza J, Torrejon M, Sachs L, Buisine N, Oulion S, Escriva H, Marcellini S. Evolution of the vertebrate bone matrix: an expression analysis of the network forming collagen paralogues in amphibian osteoblasts. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2013; 320:375-84. [PMID: 23677533 DOI: 10.1002/jez.b.22511] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Revised: 04/03/2013] [Accepted: 04/06/2013] [Indexed: 11/08/2022]
Abstract
The emergence of vertebrates is closely associated to the evolution of mineralized bone tissue. However, the molecular basis underlying the origin and subsequent diversification of the skeletal mineralized matrix is still poorly understood. One efficient way to tackle this issue is to compare the expression, between vertebrate species, of osteoblastic genes coding for bone matrix proteins. In this work, we have focused on the evolution of the network forming collagen family which contains the Col8a1, Col8a2, and Col10a1 genes. Both phylogeny and synteny reveal that these three paralogues are vertebrate-specific and derive from two independent duplications in the vertebrate lineage. To shed light on the evolution of this family, we have analyzed the osteoblastic expression of the network forming collagens in endochondral and intramembraneous skeletal elements of the amphibian Xenopus tropicalis. Remarkably, we find that amphibian osteoblasts express Col10a1, a gene strongly expressed in osteoblasts in actinopterygians but not in amniotes. In addition, while Col8a1 is known to be robustly expressed in mammalian osteoblasts, the expression levels of its amphibian orthologue are dramatically reduced. Our work reveals that while a skeletal expression of network forming collagen members is widespread throughout vertebrates, osteoblasts from divergent vertebrate lineages express different combinations of network forming collagen paralogues.
Collapse
Affiliation(s)
- Daniel Aldea
- Laboratorio de Desarrollo y Evolución, Departamento de Biología Celular, Facultad de Ciencias Biológicas, Universidad de Concepción, Barrio Universitario s/n, Concepción, Chile
| | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
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: 60] [Impact Index Per Article: 5.5] [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.
Collapse
Affiliation(s)
- Joshua Lopes
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | | | | | | | | | | | | | | |
Collapse
|
37
|
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.
Collapse
Affiliation(s)
- Eser Adiguzel
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Ontario M5S 1A8, Canada.
| | | | | | | |
Collapse
|
38
|
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.
Collapse
Affiliation(s)
- Wen Wang
- Department of Microbiology, Shanghai Key Laboratory of Medical Biodefense, Second Military Medical University, Shanghai, China
| | | | | | | | | | | | | |
Collapse
|
39
|
Miller JW. Age-related macular degeneration revisited--piecing the puzzle: the LXIX Edward Jackson memorial lecture. Am J Ophthalmol 2013; 155:1-35.e13. [PMID: 23245386 DOI: 10.1016/j.ajo.2012.10.018] [Citation(s) in RCA: 180] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 10/19/2012] [Accepted: 10/23/2012] [Indexed: 12/11/2022]
Abstract
PURPOSE To present the current understanding of age-related macular degeneration (AMD) pathogenesis, based on clinical evidence, epidemiologic data, histopathologic examination, and genetic data; to provide an update on current and emerging therapies; and to propose an integrated model of the pathogenesis of AMD. DESIGN Review of published clinical and experimental studies. METHODS Analysis and synthesis of clinical and experimental data. RESULTS We are closer to a complete understanding of the pathogenesis of AMD, having progressed from clinical observations to epidemiologic observations and clinical pathologic correlation. More recently, modern genetic and genomic studies have facilitated the exploration of molecular pathways. It seems that AMD is a complex disease that results from the interaction of genetic susceptibility with aging and environmental factors. Disease progression also seems to be driven by a combination of genetic and environmental factors. CONCLUSIONS Therapies based on pathophysiologic features have changed the paradigm for treating neovascular AMD. With improved understanding of the underlying genetic susceptibility, we can identify targets to halt early disease and to prevent progression and vision loss.
Collapse
|
40
|
Whyte C, Thies F, Peyrol L, Balcerzak D. N-3 long-chain polyunsaturated fatty acids inhibit smooth muscle cell migration by modulating urokinase plasminogen activator receptor through MEK/ERK-dependent and -independent mechanisms. J Nutr Biochem 2012; 23:1378-83. [DOI: 10.1016/j.jnutbio.2011.08.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Revised: 08/23/2011] [Accepted: 08/30/2011] [Indexed: 11/16/2022]
|
41
|
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.
Collapse
Affiliation(s)
- Zhen-Hai Ma
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027
| | | | | | | |
Collapse
|
42
|
Loeffler I, Liebisch M, Wolf G. Collagen VIII influences epithelial phenotypic changes in experimental diabetic nephropathy. Am J Physiol Renal Physiol 2012; 303:F733-45. [PMID: 22759394 DOI: 10.1152/ajprenal.00212.2012] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Epithelial-to-mesenchymal transition (EMT) is an important mechanism of renal tubulo-interstitial fibrosis in diabetic nephropathy (DN). Inducers of EMT, among others, are transforming growth factor-β(1) (TGF-β(1)) as well as extracellular collagens. In renal cells of diabetic mice and in kidneys of patients with DN, the expression of collagen VIII (gene: Col8α1/α2) is enhanced and characteristic features of DN in streptozotocin (STZ)-induced diabetic Col8α1/α2 knockout-(KO) mice are attenuated compared with diabetic wild-type mice. This study aimed to investigate whether collagen type VIII may influence the induction of EMT. DN was induced in wild-type and Col8α1/α2-KO mice using the established and widely accepted low-dose STZ model [treatment for 5 consecutive days (50 mg/kg)]. Healthy and diabetic mice were analyzed for changes in renal function and the expression of EMT-related genes and proteins. Renal morphology, fibrosis, and various EMT markers were studied in kidneys using immunohistological and molecular biological methods. Knockout of Col8α1/α2 attenuated albuminuria, extracellular matrix production, as well as fibrosis. Furthermore, the kidneys of diabetic Col8α1/α2-KO mice showed a marked reduction in interstitial myofibroblasts, and in tubular cells the inhibition of the expression of epithelial markers as well as the expression of typical mesenchymal markers was reduced. The present study demonstrates that in contrast to diabetic wild-type mice EMT-like changes were attenuated in diabetic Col8α1/α2-KO mice, which indicates that either collagen VIII may be one of the major inducers of EMT-like changes in kidneys of diabetic wild-type mice or/possibly the lack of Col8α1/α2 disrupts TGF-β(1)-induced EMT-like changes.
Collapse
Affiliation(s)
- Ivonne Loeffler
- Department of Internal Medicine III, University Hospital, University of Jena, Erlanger Allee 101, Jena, Germany
| | | | | |
Collapse
|
43
|
van Bochove GS, Sanders HMHF, de Smet M, Keizer HM, Mulder WJM, Krams R, Strijkers GJ, Nicolay K. Molecular MR Imaging of Collagen in Mouse Atherosclerosis by Using Paramagnetic CNA35 Micelles. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
44
|
McGettrick HM, Butler LM, Buckley CD, Ed Rainger G, Nash GB. Tissue stroma as a regulator of leukocyte recruitment in inflammation. J Leukoc Biol 2012; 91:385-400. [DOI: 10.1189/jlb.0911458] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
|
45
|
Balasubramanian P, Prabhakaran MP, Sireesha M, Ramakrishna S. Collagen in Human Tissues: Structure, Function, and Biomedical Implications from a Tissue Engineering Perspective. POLYMER COMPOSITES – POLYOLEFIN FRACTIONATION – POLYMERIC PEPTIDOMIMETICS – COLLAGENS 2012. [DOI: 10.1007/12_2012_176] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
46
|
Grosse J, Wehland M, Pietsch J, Ma X, Ulbrich C, Schulz H, Saar K, Hübner N, Hauslage J, Hemmersbach R, Braun M, van Loon J, Vagt N, Infanger M, Eilles C, Egli M, Richter P, Baltz T, Einspanier R, Sharbati S, Grimm D. Short-term weightlessness produced by parabolic flight maneuvers altered gene expression patterns in human endothelial cells. FASEB J 2011; 26:639-55. [PMID: 22024737 DOI: 10.1096/fj.11-194886] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This study focused on the effects of short-term microgravity (22 s) on the gene expression and morphology of endothelial cells (ECs) and evaluated gravisensitive signaling elements. ECs were investigated during four German Space Agency (Deutsches Zentrum für Luft- und Raumfahrt) parabolic flight campaigns. Hoechst 33342 and acridine orange/ethidium bromide staining showed no signs of cell death in ECs after 31 parabolas (P31). Gene array analysis revealed 320 significantly regulated genes after the first parabola (P1) and P31. COL4A5, COL8A1, ITGA6, ITGA10, and ITGB3 mRNAs were down-regulated after P1. EDN1 and TNFRSF12A mRNAs were up-regulated. ADAM19, CARD8, CD40, GSN, PRKCA (all down-regulated after P1), and PRKAA1 (AMPKα1) mRNAs (up-regulated) provide a very early protective mechanism of cell survival induced by 22 s microgravity. The ABL2 gene was significantly up-regulated after P1 and P31, TUBB was slightly induced, but ACTA2 and VIM mRNAs were not changed. β-Tubulin immunofluorescence revealed a cytoplasmic rearrangement. Vibration had no effect. Hypergravity reduced CARD8, NOS3, VASH1, SERPINH1 (all P1), CAV2, ADAM19, TNFRSF12A, CD40, and ITGA6 (P31) mRNAs. These data suggest that microgravity alters the gene expression patterns and the cytoskeleton of ECs very early. Several gravisensitive signaling elements, such as AMPKα1 and integrins, are involved in the reaction of ECs to altered gravity.
Collapse
Affiliation(s)
- Jirka Grosse
- Department of Nuclear Medicine, University of Regensburg, Regensburg, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Integrin-mediated cell-matrix interaction in physiological and pathological blood vessel formation. JOURNAL OF ONCOLOGY 2011; 2012:125278. [PMID: 21941547 PMCID: PMC3175391 DOI: 10.1155/2012/125278] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Accepted: 07/15/2011] [Indexed: 02/07/2023]
Abstract
Physiological as well as pathological blood vessel formation are fundamentally dependent on cell-matrix interaction. Integrins, a family of major cell adhesion receptors, play a pivotal role in development, maintenance, and remodeling of the vasculature. Cell migration, invasion, and remodeling of the extracellular matrix (ECM) are integrin-regulated processes, and the expression of certain integrins also correlates with tumor progression. Recent advances in the understanding of how integrins are involved in the regulation of blood vessel formation and remodeling during tumor progression are highlighted. The increasing knowledge of integrin function at the molecular level, together with the growing repertoire of integrin inhibitors which allow their selective pharmacological manipulation, makes integrins suited as potential diagnostic markers and therapeutic targets.
Collapse
|
48
|
Mollmark J, Ravi S, Sun B, Shipman S, Buitendijk M, Simons M, Mulligan-Kehoe MJ. Antiangiogenic activity of rPAI-1(23) promotes vasa vasorum regression in hypercholesterolemic mice through a plasmin-dependent mechanism. Circ Res 2011; 108:1419-28. [PMID: 21546607 DOI: 10.1161/circresaha.111.246249] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
RATIONALE The antiangiogenic activity of rPAI-1(23), a truncated plasminogen activator inhibitor-1 (PAI-1) protein, induces vasa vasorum collapse and significantly reduces plaque area and plaque cholesterol in hypercholesterolemic low-density lipoprotein receptor-deficient/apolipoprotein B48-deficient mice. OBJECTIVE The objective of this study was to examine rPAI-1(23)-stimulated mechanisms that cause vasa vasorum collapse. METHODS AND RESULTS The rPAI-1(23) protein opposed PAI-1 antiproteolytic function by stimulating a 1.6-fold increase in plasmin activity compared with the saline-treated counterpart. The increased proteolytic activity corresponded to increased activity of matrix metalloproteinase-3 and degradation of fibrin(ogen), nidogen, and perlecan in the adventitia of descending aortas. PAI-1 activity was reduced by 48% in response to rPAI-1(23); however, PAI-1 protein expression levels were similar in the rPAI-1(23)- and saline-treated hypercholesterolemic mice. Coimmunoprecipitation assays demonstrated a novel PAI-1-plasminogen complex in protein from the descending aorta of rPAI-1(23)- and saline-treated mice, but complexed PAI-1 was 1.6-fold greater in rPAI-1(23)-treated mice. Biochemical analyses demonstrated that rPAI-1(23) and PAI-1 binding interactions with plasminogen increased plasmin activity and reduced PAI-1 antiproteolytic activity. CONCLUSIONS We conclude that rPAI-1(23) causes regression or collapse of adventitial vasa vasorum in hypercholesterolemic mice by stimulating an increase in plasmin activity. The rPAI-1(23)-enhanced plasmin activity was achieved through a novel mechanism by which rPAI-1(23) and PAI-1 bound plasminogen in a cooperative manner to increase plasmin activity and reduce PAI-1 activity.
Collapse
Affiliation(s)
- Jessica Mollmark
- Department of Surgery, Vascular Section, Dartmouth Medical School, Borwell 530 E, 1 Medical Center Dr, Lebanon, NH 03756, USA
| | | | | | | | | | | | | |
Collapse
|
49
|
Sugino IK, Gullapalli VK, Sun Q, Wang J, Nunes CF, Cheewatrakoolpong N, Johnson AC, Degner BC, Hua J, Liu T, Chen W, Li H, Zarbin MA. Cell-deposited matrix improves retinal pigment epithelium survival on aged submacular human Bruch's membrane. Invest Ophthalmol Vis Sci 2011; 52:1345-58. [PMID: 21398292 DOI: 10.1167/iovs.10-6112] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
PURPOSE To determine whether resurfacing submacular human Bruch's membrane with a cell-deposited extracellular matrix (ECM) improves retinal pigment epithelial (RPE) survival. METHODS Bovine corneal endothelial (BCE) cells were seeded onto the inner collagenous layer of submacular Bruch's membrane explants of human donor eyes to allow ECM deposition. Control explants from fellow eyes were cultured in medium only. The deposited ECM was exposed by removing BCE. Fetal RPE cells were then cultured on these explants for 1, 14, or 21 days. The explants were analyzed quantitatively by light microscopy and scanning electron microscopy. Surviving RPE cells from explants cultured for 21 days were harvested to compare bestrophin and RPE65 mRNA expression. Mass spectroscopy was performed on BCE-ECM to examine the protein composition. RESULTS The BCE-treated explants showed significantly higher RPE nuclear density than did the control explants at all time points. RPE expressed more differentiated features on BCE-treated explants than on untreated explants, but expressed very little mRNA for bestrophin or RPE65. The untreated young (<50 years) and African American submacular Bruch's membrane explants supported significantly higher RPE nuclear densities (NDs) than did the Caucasian explants. These differences were reduced or nonexistent in the BCE-ECM-treated explants. Proteins identified in the BCE-ECM included ECM proteins, ECM-associated proteins, cell membrane proteins, and intracellular proteins. CONCLUSIONS Increased RPE survival can be achieved on aged submacular human Bruch's membrane by resurfacing the latter with a cell-deposited ECM. Caucasian eyes seem to benefit the most, as cell survival is the worst on submacular Bruch's membrane in these eyes.
Collapse
Affiliation(s)
- Ilene K Sugino
- The Institute of Ophthalmology and Visual Science, New Jersey Medical School, University of Medicine and Dentistry of New Jersey, Newark, New Jersey 07101-1709, USA
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
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.
Collapse
Affiliation(s)
- Ivonne Loeffler
- Department of Internal Medicine III, University of Jena, Erlanger Allee 101, D-07740 Jena, Germany
| | | | | | | |
Collapse
|