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Lau K, Reichheld S, Xian M, Sharpe SJ, Cerruti M. Directed Assembly of Elastic Fibers via Coacervate Droplet Deposition on Electrospun Templates. Biomacromolecules 2024; 25:3519-3531. [PMID: 38742604 DOI: 10.1021/acs.biomac.4c00180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Elastic fibers provide critical elasticity to the arteries, lungs, and other organs. Elastic fiber assembly is a process where soluble tropoelastin is coacervated into liquid droplets, cross-linked, and deposited onto and into microfibrils. While much progress has been made in understanding the biology of this process, questions remain regarding the timing of interactions during assembly. Furthermore, it is unclear to what extent fibrous templates are needed to guide coacervate droplets into the correct architecture. The organization and shaping of coacervate droplets onto a fiber template have never been previously modeled or employed as a strategy for shaping elastin fiber materials. Using an in vitro system consisting of elastin-like polypeptides (ELPs), genipin cross-linker, electrospun polylactic-co-glycolic acid (PLGA) fibers, and tannic acid surface coatings for fibers, we explored ELP coacervation, cross-linking, and deposition onto fiber templates. We demonstrate that integration of coacervate droplets into a fibrous template is primarily influenced by two factors: (1) the balance of coacervation and cross-linking and (2) the surface energy of the fiber templates. The success of this integration affects the mechanical properties of the final fiber network. Our resulting membrane materials exhibit highly tunable morphologies and a range of elastic moduli (0.8-1.6 MPa) comparable to native elastic fibers.
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Affiliation(s)
- Kirklann Lau
- Department of Mining and Materials Engineering, McGill University, 3610 University Street, Wong Building 2250, Montreal, Quebec H3A 0C5, Canada
| | - Sean Reichheld
- Molecular Medicine, Hospital for Sick Children, Peter Gilgan Center for Research and Learning, 686 Bay Street, Room 20.9714, Toronto, Ontario M5G 1X8, Canada
| | - Mingqian Xian
- Department of Mining and Materials Engineering, McGill University, 3610 University Street, Wong Building 2250, Montreal, Quebec H3A 0C5, Canada
| | - Simon J Sharpe
- Molecular Medicine, Hospital for Sick Children, Peter Gilgan Center for Research and Learning, 686 Bay Street, Room 20.9714, Toronto, Ontario M5G 1X8, Canada
- Department of Biochemistry, University of Toronto, 1 King's College Circle, Medical Sciences Building, Room 5207, Toronto, Ontario M5S 1A8, Canada
| | - Marta Cerruti
- Department of Mining and Materials Engineering, McGill University, 3610 University Street, Wong Building 2250, Montreal, Quebec H3A 0C5, Canada
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Wozny MR, Nelea V, Siddiqui IFS, Wanga S, de Waard V, Strauss M, Reinhardt DP. Microfibril-associated glycoprotein 4 forms octamers that mediate interactions with elastogenic proteins and cells. Nat Commun 2024; 15:4015. [PMID: 38740766 PMCID: PMC11091212 DOI: 10.1038/s41467-024-48377-z] [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: 09/28/2023] [Accepted: 04/29/2024] [Indexed: 05/16/2024] Open
Abstract
Microfibril-associated glycoprotein 4 (MFAP4) is a 36-kDa extracellular matrix glycoprotein with critical roles in organ fibrosis, chronic obstructive pulmonary disease, and cardiovascular disorders, including aortic aneurysms. MFAP4 multimerises and interacts with elastogenic proteins, including fibrillin-1 and tropoelastin, and with cells via integrins. Structural details of MFAP4 and its potential interfaces for these interactions are unknown. Here, we present a cryo-electron microscopy structure of human MFAP4. In the presence of calcium, MFAP4 assembles as an octamer, where two sets of homodimers constitute the top and bottom halves of each octamer. Each homodimer is linked together by an intermolecular disulphide bond. A C34S missense mutation prevents disulphide-bond formation between monomers but does not prevent octamer assembly. The atomic model, built into the 3.55 Å cryo-EM map, suggests that salt-bridge interactions mediate homodimer assembly, while non-polar residues form the interface between octamer halves. In the absence of calcium, an MFAP4 octamer dissociates into two tetramers. Binding studies with fibrillin-1, tropoelastin, LTBP4, and small fibulins show that MFAP4 has multiple surfaces for protein-protein interactions, most of which depend upon MFAP4 octamer assembly. The C34S mutation does not affect these protein interactions or cell interactions. MFAP4 assemblies with fibrillin-1 abrogate MFAP4 interactions with cells.
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Affiliation(s)
- Michael R Wozny
- Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
| | - Valentin Nelea
- Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC, Canada
| | | | - Shaynah Wanga
- Amsterdam UMC location University of Amsterdam, Medical Biochemistry, Amsterdam, The Netherlands; Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
| | - Vivian de Waard
- Amsterdam UMC location University of Amsterdam, Medical Biochemistry, Amsterdam, The Netherlands; Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
| | - Mike Strauss
- Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada.
| | - Dieter P Reinhardt
- Faculty of Medicine and Health Sciences, McGill University, Montreal, QC, Canada.
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC, Canada.
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Chick CN, Inoue T, Mori N, Tanaka E, Kawaguchi M, Takahashi T, Hanakita J, Minami M, Kanematsu R, Usuki T. LC-MS/MS analysis of elastin crosslinker desmosines and microscopic evaluation in clinical samples of patients with hypertrophy of ligamentum flavum. Bioorg Med Chem 2023; 82:117216. [PMID: 36842401 DOI: 10.1016/j.bmc.2023.117216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/15/2023] [Accepted: 02/16/2023] [Indexed: 02/23/2023]
Abstract
Ligamentum flavum (LF) pathologies often lead to severe myelopathy or radiculopathy characterized by reduced elasticity, obvious thickening, or worsened ossification. Elastin endows critical mechanical properties to tissues and organs such as vertebrae and ligaments. Desmosine (DES) and isodesmosine (IDES) are crosslinkers of elastin monomers called tropoelastin. These crosslinkers are potential biomarkers of chronic obstructive pulmonary disease. As a biological diagnostic tool that supplements existing symptomatic, magnetic resonance imaging scanning or radiological imaging diagnostic measures for LF hypertrophy and associated pathologies, an isotope-dilution liquid chromatography-tandem mass spectrometry method with selected reaction monitoring mode for the quantitation of DESs in human plasma, urine, cerebrospinal fluid (CSF), and yellow ligamentum was investigated. Isotopically labeled IDES-13C3,15N1 was used as an internal standard (ISTD) for DES quantitation for the first time. The samples plus ISTD were hydrolyzed with 6 N hydrochloric acid. Analytes and ISTD were extracted using a solid phase extraction cellulose cartridge column. The assays were repeatable, reproducible, and accurate with % CV ≤ 7.7, ISTD area % RSD of 7.6, and % AC ≤ (101.2 ± 3.90) of the calibrations. The ligamentum samples gave the highest average DES/IDES content (2.38 μg/mg) on a dry-weight basis. A high percentage of the CSF samples showed almost no DESs. Urine and plasma samples of patients showed no significant difference from the control (p-value = 0.0519 and 0.5707, respectively). Microscopy of the yellow ligamentum samples revealed dark or blue-colored zones of elastin fibers that retained the hematoxylin dye and highly red-colored zones of collagen after counterstaining with van Gieson solution. Thus, we successfully developed a method for DES/IDES quantitation in clinical samples.
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Affiliation(s)
- Christian Nanga Chick
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan
| | - Tomoo Inoue
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan; Department of Neurosurgery, Saitama Red Cross Hospital, 1-5 Shintoshin, Chuo-ku, Saitama 330-8553, Japan; Spinal Disorders Center, Fujieda Heisei Memorial Hospital, 123-1 Mizukami, Fujieda, Shizuoka 426-8662, Japan.
| | - Natsuki Mori
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan
| | - Eri Tanaka
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan
| | - Mari Kawaguchi
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan
| | - Toshiyuki Takahashi
- Spinal Disorders Center, Fujieda Heisei Memorial Hospital, 123-1 Mizukami, Fujieda, Shizuoka 426-8662, Japan
| | - Junya Hanakita
- Spinal Disorders Center, Fujieda Heisei Memorial Hospital, 123-1 Mizukami, Fujieda, Shizuoka 426-8662, Japan
| | - Manabu Minami
- Spinal Disorders Center, Fujieda Heisei Memorial Hospital, 123-1 Mizukami, Fujieda, Shizuoka 426-8662, Japan
| | - Ryo Kanematsu
- Spinal Disorders Center, Fujieda Heisei Memorial Hospital, 123-1 Mizukami, Fujieda, Shizuoka 426-8662, Japan
| | - Toyonobu Usuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan.
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Lima LF, Sousa MGDC, Rodrigues GR, de Oliveira KBS, Pereira AM, da Costa A, Machado R, Franco OL, Dias SC. Elastin-like Polypeptides in Development of Nanomaterials for Application in the Medical Field. FRONTIERS IN NANOTECHNOLOGY 2022. [DOI: 10.3389/fnano.2022.874790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Elastin-like polypeptides (ELPs) are biopolymers formed by amino acid sequences derived from tropoelastin. These biomolecules can be soluble below critical temperatures, forming aggregates at higher temperatures, which makes them an interesting source for the design of different nanobiomaterials. These nanobiomaterials can be obtained from heterologous expression in several organisms such as bacteria, fungi, and plants. Thanks to the many advantages of ELPs, they have been used in the biomedical field to develop nanoparticles, nanofibers, and nanocomposites. These nanostructures can be used in multiple applications such as drug delivery systems, treatments of type 2 diabetes, cardiovascular diseases, tissue repair, and cancer therapy. Thus, this review aims to shed some light on the main advances in elastin-like-based nanomaterials, their possible expression forms, and importance to the medical field.
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Lau K, Reichheld S, Sharpe S, Cerruti M. Globule and fiber formation with elastin-like polypeptides: a balance of coacervation and crosslinking. SOFT MATTER 2022; 18:3257-3266. [PMID: 35404375 DOI: 10.1039/d2sm00049k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Elastic fiber assembly is a complex process that requires the coacervation and cross-linking of the protein building block tropoelastin. To date, the order, timing, and interplay of coacervation and crosslinking is not completely understood, despite a great number of advances into understanding the molecular structure and functions of the many proteins involved in elastic fiber assembly. With a simple in vitro model using elastin-like polypeptides and the natural chemical crosslinker genipin, we demonstrate the strong influence of the timing and kinetics of crosslinking reaction on the coacervation, crosslinking extent, and resulting morphology of elastin. We also outline a method for analyzing elastin droplet network formation as a heuristic for measuring the propensity for elastic fiber formation. From this we show that adding crosslinker during peak coacervation dramatically increases the propensity for droplet network formation.
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Affiliation(s)
- Kirklann Lau
- Department of Materials Engineering, McGill University, 3610 University Street Wong Building, 2250 Montreal, QC H3A 2B2, Canada.
| | - Sean Reichheld
- Molecular Medicine, Hospital for Sick Children, Peter Gilgan Center for Research and Learning, 686 Bay St., Room 20.9714, Toronto, ON M5G 1X8, Canada.
| | - Simon Sharpe
- Molecular Medicine, Hospital for Sick Children, Peter Gilgan Center for Research and Learning, 686 Bay St., Room 20.9714, Toronto, ON M5G 1X8, Canada.
| | - Marta Cerruti
- Department of Materials Engineering, McGill University, 3610 University Street Wong Building, 2250 Montreal, QC H3A 2B2, Canada.
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Li Y, Nie N, Gong L, Bao F, An C, Cai H, Yao X, Liu Y, Yang C, Wu B, Zou X. Structural, functional and molecular pathogenesis of pelvic organ prolapse in patient and Loxl1 deficient mice. Aging (Albany NY) 2021; 13:25886-25902. [PMID: 34923484 PMCID: PMC8751609 DOI: 10.18632/aging.203777] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 11/11/2021] [Indexed: 12/02/2022]
Abstract
Pelvic organ prolapse is a worldwide health problem to elderly women. Understanding its pathogenesis and an ideal animal model are crucial to developing promising treatments. The present study aimed to investigate new clinical significance and detailed mechanism of pelvic organ prolapse by comparing the structural, functional and molecular dysfunctions of pelvic organ prolapse in patient and Loxl1 deficient mice. Our results showed that human vagina tissues from prolapsed site showed disarranged collagen and elastic fibers compared with the non-prolapse tissue. A gene ontology (GO) analysis of differentially expressed genes revealed molecular changes mainly related to inflammatory response and extracellular matrix (ECM) organization. While the mice lacking Loxl1 developed stable POP phenotype and disordered ECM structure in histology. Such Loxl1 knockout mice exhibited a significantly urinary dysfunction and decreased mechanical properties of the pelvic floor tissues, implying that POP in human condition might be induced by progressively decreased mechanics of pelvic tissues following ECM catabolism. Similarly, we not only identified significant up-regulated ECM catabolism processes and down-regulated ECM synthesis processes, but also characterized high level of inflammatory response in vagina tissue of the Loxl1 deficient mice. Thus, all these pathological changes in the POP mice model was consistent with those of the clinical elderly patients. These findings provide new insight into remodeling of POP by LOXL1 regulation and be of great importance to develop combination treatments of ECM metabolism and inflammation regulation strategy.
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Affiliation(s)
- Yu Li
- Clinical Research Center, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
| | - Nanfang Nie
- Clinical Research Center, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
| | - Lin Gong
- Clinical Research Center, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
| | - Fangyuan Bao
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
| | - Chengrui An
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
| | - Hongxia Cai
- Clinical Research Center, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
| | - Xudong Yao
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Department of Gynaecology, The Fourth Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
| | - Yanshan Liu
- Clinical Research Center, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
| | - Chunbo Yang
- Department of Gynaecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
| | - Bingbing Wu
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Department of Gynaecology, The Fourth Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
| | - XiaoHui Zou
- Clinical Research Center, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang 310003, PR China
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Cheng M, Yang Y, Xin H, Li M, Zong T, He X, Yu T, Xin H. Non-coding RNAs in aortic dissection: From biomarkers to therapeutic targets. J Cell Mol Med 2020; 24:11622-11637. [PMID: 32885591 PMCID: PMC7578866 DOI: 10.1111/jcmm.15802] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/13/2020] [Accepted: 08/08/2020] [Indexed: 12/12/2022] Open
Abstract
Aortic dissection (AD) is the rupture of the aortic intima, causing the blood in the cavity to enter the middle of the arterial wall. Without urgent and proper treatment, the mortality rate increases to 50% within 48 hours. Most patients present with acute onset of symptoms, including sudden severe pain and complex and variable clinical manifestations, which can be easily misdiagnosed. Despite this, the molecular mechanisms underlying AD are still unknown. Recently, non‐coding RNAs have emerged as novel regulators of gene expression. Previous studies have proven that ncRNAs can regulate several cardiovascular diseases; therefore, their potential as clinical biomarkers and novel therapeutic targets for AD has aroused widespread interest. To date, several studies have reported that microRNAs are crucially involved in AD progression. Additionally, several long non‐coding RNAs and circular RNAs have been found to be differentially expressed in AD samples, suggesting their potential roles in vascular physiology and disease. In this review, we discuss the functions of ncRNAs in AD pathophysiology and highlight their potential as biomarkers and therapeutic targets for AD. Meanwhile, we present the animal models previously used for AD research, as well as the specific methods for constructing mouse or rat AD models.
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Affiliation(s)
- Mengdie Cheng
- Department of Cardiology, The Affiliated hospital of Qingdao University, Qingdao, China
| | - Yanyan Yang
- Department of Immunology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Hai Xin
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Min Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Tingyu Zong
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xingqiang He
- Department of Cardiology, The Affiliated hospital of Qingdao University, Qingdao, China
| | - Tao Yu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China.,Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hui Xin
- Department of Cardiology, The Affiliated hospital of Qingdao University, Qingdao, China
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Ferreira JPS, Kuang M, Parente MPL, Natal Jorge RM, Wang R, Eppell SJ, Damaser M. Altered mechanics of vaginal smooth muscle cells due to the lysyl oxidase-like1 knockout. Acta Biomater 2020; 110:175-187. [PMID: 32335309 DOI: 10.1016/j.actbio.2020.03.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 03/26/2020] [Accepted: 03/31/2020] [Indexed: 01/04/2023]
Abstract
The remodeling mechanisms that cause connective tissue of the vaginal wall, consisting mostly of smooth muscle, to weaken after vaginal delivery are not fully understood. Abnormal remodeling after delivery can contribute to development of pelvic organ prolapse and other pelvic floor disorders. The present study used vaginal smooth muscle cells (vSMCs) isolated from knockout mice lacking the expression of the lysyl oxidase-like1 (LOXL1) enzyme, a well-characterized animal model for pelvic organ prolapse. We tested if vaginal smooth muscle cells from LOXL1 knockout mice have altered mechanics including stiffness and surface adhesion. Using atomic force microscopy, we performed nanoindentations on both isolated and confluent cells to evaluate the effect of LOXL1 knockout on in vitro cultures of vSMCs cells from nulliparous mice. The results show that LOXL1 knockout vSMCs have increased stiffness in pre-confluent but decreased stiffness in confluent cultures (p* < 0.05) and significant decreased surface adhesion in pre-confluent cultures (p* < 0.05). This study provides evidence that the weakening of vaginal connective tissue in the absense of LOXL1 changes the mechanical properties of the vSMCs. STATEMENT OF SIGNIFICANCE: Pelvic organ prolapse is a common condition affecting millions of women worldwide, which significantly impacts their quality of life. Alterations in vaginal and pelvic floor mechanical properties can change their ability to support the pelvic organs. This study provides evidence of altered stiffness of vaginal smooth muscle cells from mice resembling pelvic organ prolapse. The results from this study set a foundation to develop pathophysiology-driven therapies focused on the interplay between smooth muscle mechanics and extracellular matrix remodeling.
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Affiliation(s)
- J P S Ferreira
- Department of Mechanical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal; Institute of Science and Innovation in Mechanical and Industrial Engineering, Porto, Portugal; Department of Biomedical Engineering, Lerner Research Institute and Glickman Urological Institute, Cleveland Clinic Foundation, OH, USA.
| | - M Kuang
- Department of Biomedical Engineering, Lerner Research Institute and Glickman Urological Institute, Cleveland Clinic Foundation, OH, USA
| | - M P L Parente
- Department of Mechanical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal; Institute of Science and Innovation in Mechanical and Industrial Engineering, Porto, Portugal
| | - R M Natal Jorge
- Department of Mechanical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal; Institute of Science and Innovation in Mechanical and Industrial Engineering, Porto, Portugal
| | - R Wang
- Department of Chemistry, Illinois Institute of Technology, Chicago, IL, USA
| | - S J Eppell
- Department of Biomedical Engineering, Case Western Reserve, Cleveland, OH, USA
| | - M Damaser
- Department of Biomedical Engineering, Lerner Research Institute and Glickman Urological Institute, Cleveland Clinic Foundation, OH, USA; Department of Biomedical Engineering, Case Western Reserve, Cleveland, OH, USA; Advanced Platform Technology Center, Louis Stokes Cleveland Veteran's Administration Medical Center, Cleveland, OH, USA.
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9
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McCabe MC, Hill RC, Calderone K, Cui Y, Yan Y, Quan T, Fisher GJ, Hansen KC. Alterations in extracellular matrix composition during aging and photoaging of the skin. Matrix Biol Plus 2020; 8:100041. [PMID: 33543036 PMCID: PMC7852213 DOI: 10.1016/j.mbplus.2020.100041] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 04/02/2020] [Accepted: 06/05/2020] [Indexed: 02/07/2023] Open
Abstract
Human skin is composed of the cell-rich epidermis, the extracellular matrix (ECM) rich dermis, and the hypodermis. Within the dermis, a dense network of ECM proteins provides structural support to the skin and regulates a wide variety of signaling pathways which govern cell proliferation and other critical processes. Both intrinsic aging, which occurs steadily over time, and extrinsic aging (photoaging), which occurs as a result of external insults such as solar radiation, cause alterations to the dermal ECM. In this study, we utilized both quantitative and global proteomics, alongside single harmonic generation (SHG) and two-photon autofluorescence (TPAF) imaging, to assess changes in dermal composition during intrinsic and extrinsic aging. We find that both intrinsic and extrinsic aging result in significant decreases in ECM-supporting proteoglycans and structural ECM integrity, evidenced by decreasing collagen abundance and increasing fibril fragmentation. Intrinsic aging also produces changes distinct from those produced by photoaging, including reductions in elastic fiber and crosslinking enzyme abundance. In contrast, photoaging is primarily defined by increases in elastic fiber-associated protein and pro-inflammatory proteases. Changes associated with photoaging are evident even in young (mid 20s) sun-exposed forearm skin, indicating that proteomic evidence of photoaging is present decades prior to clinical signs of photoaging. GO term enrichment revealed that both intrinsic aging and photoaging share common features of chronic inflammation. The proteomic data has been deposited to the ProteomeXchange Consortium via the PRIDE partner repository with the data set identifier PXD015982. Intrinsic aging and photoaging both decrease ECM-supporting proteoglycans and structural ECM. Intrinsic aging produces reductions in elastic fiber and crosslinking enzyme abundance. Photoaging results in increases in pro-inflammatory proteases and elastic fiber abundance. Intrinsic aging and photoaging share common features associated with chronic inflammation. Proteomic changes associated with photoaging are evident decades prior to clinical aging signs.
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Key Words
- AUC, area under the curve
- Aging
- CE, cornified envelope
- CNBr, cyanogen bromide
- Collagen
- ECM, extracellular matrix
- Extracellular matrix
- GO, gene ontology
- Photoaging
- Proteomics
- QconCATs, quantitative concatemers
- SHG, single harmonic generation
- Skin
- TPAF, two-photon autofluorescence
- UV, ultraviolet
- iECM, insoluble ECM
- sECM, soluble ECM
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Affiliation(s)
- Maxwell C. McCabe
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado, 12801 E 17th Ave., Aurora, CO 80045, USA
| | - Ryan C. Hill
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado, 12801 E 17th Ave., Aurora, CO 80045, USA
| | - Kenneth Calderone
- Department of Dermatology, University of Michigan, 1150 W. Medical Center Drive, Medical Science I R6447, Ann Arbor, MI 48109, USA
| | - Yilei Cui
- Department of Dermatology, University of Michigan, 1150 W. Medical Center Drive, Medical Science I R6447, Ann Arbor, MI 48109, USA
| | - Yan Yan
- Department of Dermatology, University of Michigan, 1150 W. Medical Center Drive, Medical Science I R6447, Ann Arbor, MI 48109, USA
| | - Taihao Quan
- Department of Dermatology, University of Michigan, 1150 W. Medical Center Drive, Medical Science I R6447, Ann Arbor, MI 48109, USA
| | - Gary J. Fisher
- Department of Dermatology, University of Michigan, 1150 W. Medical Center Drive, Medical Science I R6447, Ann Arbor, MI 48109, USA
| | - Kirk C. Hansen
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado, 12801 E 17th Ave., Aurora, CO 80045, USA
- Corresponding author.
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10
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Kozel BA, Mecham RP. Elastic fiber ultrastructure and assembly. Matrix Biol 2019; 84:31-40. [PMID: 31669522 DOI: 10.1016/j.matbio.2019.10.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 09/22/2019] [Accepted: 10/16/2019] [Indexed: 10/25/2022]
Abstract
Studies over the years have described a filamentous structure to mature elastin that suggests a complicated packing arrangement of tropoelastin subunits. The currently accepted mechanism for tropoelastin assembly requires microfibrils to serve as a physical extracellular scaffold for alignment of tropoelastin monomers during and before crosslinking. However, recent evidence suggests that the initial stages of tropoelastin assembly occur within the cell or at unique assembly sites on the plasma membrane where tropoelastin self assembles to form elastin aggregates. Outside the cell, elastin aggregates transfer to growing elastic fibers in the extracellular matrix where tensional forces on microfibrils generated through cell movement help shape the growing fiber. Overall, these observations challenge the widely held idea that interaction between monomeric tropoelastin and microfibrils is a requirement for elastin assembly, and point to self-assembly of tropoelastin as a driving force in elastin maturation.
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Affiliation(s)
- Beth A Kozel
- National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Robert P Mecham
- Department of Cell Biology and Physiology, Washington University School of Medicine, Campus Box 8228, 660 South Euclid Ave, St. Louis, MO, 63110, USA.
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11
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Lysyl oxidases: from enzyme activity to extracellular matrix cross-links. Essays Biochem 2019; 63:349-364. [DOI: 10.1042/ebc20180050] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/23/2019] [Accepted: 08/27/2019] [Indexed: 12/13/2022]
Abstract
AbstractThe lysyl oxidase family comprises five members in mammals, lysyl oxidase (LOX) and four lysyl oxidase like proteins (LOXL1-4). They are copper amine oxidases with a highly conserved catalytic domain, a lysine tyrosylquinone cofactor, and a conserved copper-binding site. They catalyze the first step of the covalent cross-linking of the extracellular matrix (ECM) proteins collagens and elastin, which contribute to ECM stiffness and mechanical properties. The role of LOX and LOXL2 in fibrosis, tumorigenesis, and metastasis, including changes in their expression level and their regulation of cell signaling pathways, have been extensively reviewed, and both enzymes have been identified as therapeutic targets. We review here the molecular features and three-dimensional structure/models of LOX and LOXLs, their role in ECM cross-linking, and the regulation of their cross-linking activity by ECM proteins, proteoglycans, and by inhibitors. We also make an overview of the major ECM cross-links, because they are the ultimate molecular readouts of LOX/LOXL activity in tissues. The recent 3D model of LOX, which recapitulates its known structural and biochemical features, will be useful to decipher the molecular mechanisms of LOX interaction with its various substrates, and to design substrate-specific inhibitors, which are potential antifibrotic and antitumor drugs.
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12
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Hedtke T, Schräder CU, Heinz A, Hoehenwarter W, Brinckmann J, Groth T, Schmelzer CEH. A comprehensive map of human elastin cross-linking during elastogenesis. FEBS J 2019; 286:3594-3610. [PMID: 31102572 DOI: 10.1111/febs.14929] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 04/09/2019] [Accepted: 05/15/2019] [Indexed: 01/05/2023]
Abstract
Elastin is an essential structural protein in the extracellular matrix of vertebrates. It is the core component of elastic fibers, which enable connective tissues such as those of the skin, lungs or blood vessels to stretch and recoil. This function is provided by elastin's exceptional properties, which mainly derive from a unique covalent cross-linking between hydrophilic lysine-rich motifs of units of the monomeric precursor tropoelastin. To date, elastin's cross-linking is poorly investigated. Here, we purified elastin from human tissue and cleaved it into soluble peptides using proteases with different specificities. We then analyzed elastin's molecular structure by identifying unmodified residues, post-translational modifications and cross-linked peptides by high-resolution mass spectrometry and amino acid analysis. The data revealed the presence of multiple isoforms in parallel and a complex and heterogeneous molecular interconnection. We discovered that the same lysine residues in different monomers were simultaneously involved in various cross-link types or remained unmodified. Furthermore, both types of cross-linking domains, Lys-Pro and Lys-Ala domains, participate not only in bifunctional inter- but also in intra-domain cross-links. We elucidated the sequences of several desmosine-containing peptides and the contribution of distinct domains such as 6, 14 and 25. In contrast to earlier assumptions proposing that desmosine cross-links are formed solely between two domains, we elucidated the structure of a peptide that proves a desmosine formation with participation of three Lys-Ala domains. In summary, these results provide new and detailed insights into the cross-linking process, which takes place within and between human tropoelastin units in a stochastic manner.
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Affiliation(s)
- Tobias Hedtke
- Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany.,Biomedical Materials Group, Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Germany
| | - Christoph U Schräder
- Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Germany
| | - Andrea Heinz
- Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Germany.,Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Wolfgang Hoehenwarter
- Proteome Analytics Research Group, Leibniz Institute for Plant Biochemistry, Halle (Saale), Germany
| | - Jürgen Brinckmann
- Institute of Virology and Cell Biology & Department of Dermatology, University of Lübeck, Germany
| | - Thomas Groth
- Biomedical Materials Group, Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Germany
| | - Christian E H Schmelzer
- Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany.,Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Germany.,Institute of Applied Dermatopharmacy at the Martin Luther University Halle-Wittenberg (IADP), Germany
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13
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Almeida H, Domingues RMA, Mithieux SM, Pires RA, Gonçalves AI, Gómez-Florit M, Reis RL, Weiss AS, Gomes ME. Tropoelastin-Coated Tendon Biomimetic Scaffolds Promote Stem Cell Tenogenic Commitment and Deposition of Elastin-Rich Matrix. ACS APPLIED MATERIALS & INTERFACES 2019; 11:19830-19840. [PMID: 31088069 DOI: 10.1021/acsami.9b04616] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Tendon tissue engineering strategies that recreate the biophysical and biochemical native microenvironment have a greater potential to achieve regeneration. Here, we developed tendon biomimetic scaffolds using mechanically competent yarns of poly-ε-caprolactone, chitosan, and cellulose nanocrystals to recreate the inherent tendon hierarchy from a nano-to-macro scale. These were then coated with tropoelastin (TROPO) through polydopamine (PDA) linking, to mimic the native extracellular matrix (ECM) composition and elasticity. Both PDA and TROPO coatings decreased surface stiffness without masking the underlying substrate. We found that human adipose-derived stem cells (hASCs) seeded onto these TROPO biomimetic scaffolds more rapidly acquired their spindle-shape morphology and high aspect ratio characteristic of tenocytes. Immunocytochemistry shows that the PDA and TROPO-coated surfaces boosted differentiation of hASCs toward the tenogenic lineage, with sustained expression of the tendon-related markers scleraxis and tenomodulin up to 21 days of culture. Furthermore, these surfaces enabled the deposition of a tendon-like ECM, supported by the expression of collagens type I and III, tenascin, and decorin. Gene expression analysis revealed a downregulation of osteogenic and fibrosis markers in the presence of TROPO when compared with the control groups, suggesting proper ECM deposition. Remarkably, differentiated cells exposed to TROPO acquired an elastogenic profile due to the evident elastin synthesis and deposition, contributing to the formation of a more mimetic matrix in comparison with the PDA-coated and uncoated conditions. In summary, our biomimetic substrates combining biophysical and biological cues modulate stem cell behavior potentiating their long-term tenogenic commitment and the production of an elastin-rich ECM.
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Affiliation(s)
- Helena Almeida
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics , University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra , Barco, 4805-017 Guimarães , Portugal
- ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal
| | - Rui M A Domingues
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics , University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra , Barco, 4805-017 Guimarães , Portugal
- ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal
- The Discoveries Centre for Regenerative and Precision Medicine , Headquarters at University of Minho , Avepark , Barco, 4805-017 Guimarães , Portugal
| | | | - Ricardo A Pires
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics , University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra , Barco, 4805-017 Guimarães , Portugal
- ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal
- The Discoveries Centre for Regenerative and Precision Medicine , Headquarters at University of Minho , Avepark , Barco, 4805-017 Guimarães , Portugal
| | - Ana I Gonçalves
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics , University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra , Barco, 4805-017 Guimarães , Portugal
- ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal
| | - Manuel Gómez-Florit
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics , University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra , Barco, 4805-017 Guimarães , Portugal
- ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal
| | - Rui L Reis
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics , University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra , Barco, 4805-017 Guimarães , Portugal
- ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal
- The Discoveries Centre for Regenerative and Precision Medicine , Headquarters at University of Minho , Avepark , Barco, 4805-017 Guimarães , Portugal
| | | | - Manuela E Gomes
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics , University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra , Barco, 4805-017 Guimarães , Portugal
- ICVS/3B's-PT Government Associate Laboratory , Braga/Guimarães , Portugal
- The Discoveries Centre for Regenerative and Precision Medicine , Headquarters at University of Minho , Avepark , Barco, 4805-017 Guimarães , Portugal
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14
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15
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Elastic fibers and biomechanics of the aorta: Insights from mouse studies. Matrix Biol 2019; 85-86:160-172. [PMID: 30880160 DOI: 10.1016/j.matbio.2019.03.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 02/28/2019] [Accepted: 03/04/2019] [Indexed: 12/14/2022]
Abstract
Elastic fibers are major components of the extracellular matrix (ECM) in the aorta and support a life-long cycling of stretch and recoil. Elastic fibers are formed from mid-gestation throughout early postnatal development and the synthesis is regulated at multiple steps, including coacervation, deposition, cross-linking, and assembly of insoluble elastin onto microfibril scaffolds. To date, more than 30 molecules have been shown to associate with elastic fibers and some of them play a critical role in the formation and maintenance of elastic fibers in vivo. Because the aorta is subjected to high pressure from the left ventricle, elasticity of the aorta provides the Windkessel effect and maintains stable blood flow to distal organs throughout the cardiac cycle. Disruption of elastic fibers due to congenital defects, inflammation, or aging dramatically reduces aortic elasticity and affects overall vessel mechanics. Another important component in the aorta is the vascular smooth muscle cells (SMCs). Elastic fibers and SMCs alternate to create a highly organized medial layer within the aortic wall. The physical connections between elastic fibers and SMCs form the elastin-contractile units and maintain cytoskeletal organization and proper responses of SMCs to mechanical strain. In this review, we revisit the components of elastic fibers and their roles in elastogenesis and how a loss of each component affects biomechanics of the aorta. Finally, we discuss the significance of elastin-contractile units in the maintenance of SMC function based on knowledge obtained from mouse models of human disease.
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16
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Ozsvar J, Tarakanova A, Wang R, Buehler MJ, Weiss AS. Allysine modifications perturb tropoelastin structure and mobility on a local and global scale. Matrix Biol Plus 2019; 2:100002. [PMID: 33543005 PMCID: PMC7852328 DOI: 10.1016/j.mbplus.2019.03.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/10/2019] [Accepted: 03/10/2019] [Indexed: 11/20/2022] Open
Abstract
Elastin provides elastic tissues with resilience through stretch and recoil cycles, and is primarily made of its extensively cross-linked monomer, tropoelastin. Here, we leverage the recently published full atomistic model of tropoelastin to assess how allysine modifications, which are essential to cross-linking, contribute to the dynamics and structural changes that occur in tropoelastin in the context of elastin assembly. We used replica exchange molecular dynamics to generate structural ensembles of allysine containing tropoelastin. We conducted principal component analysis on these ensembles and found that the molecule departs from the canonical structural ensemble. Furthermore, we showed that, while the canonical scissors-twist movement was retained, new movements emerged that deviated from those of the wild type protein, providing evidence for the involvement of a variety of molecular motions in elastin assembly. Additionally, we highlighted secondary structural changes and linked these perturbations to the longevity of specific salt bridges. We propose a model where allysines in tropoelastin contribute to hierarchical elastin assembly through global and local perturbations to molecular structure and dynamics. converting lysine to allysine by lysyl oxidases is needed to generate crosslinks between tropoelastin molecules in order to make elastin structural changes in the intact tropoelastin molecule ensue where modified tropoelastin molecules structurally depart from the canonical ensemble new molecular motions deviate from those of unmodified tropoelastin persistence times of specific salt bridges contribute to these perturbations allysines in tropoelastin contribute to hierarchical elastin assembly through global and local perturbations to molecular structure and dynamics
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Key Words
- 5ALK, tropoelastin containing 5 allysine residues
- ALK353, tropoelastin containing allysine at residue 353
- ALK353, tropoelastin containing allysine at residue 507
- ALL, allysine aldol
- ANM, anisotropic network model
- Assembly
- ECM, extracellular matrix
- Elastin
- LNL, lysinonorleucine
- MD, molecular dynamics
- Molecular dynamics
- NMA, normal mode analysis
- PCA, principal component analysis
- REMD, replica exchange molecular dynamics
- RMSD, root mean square deviation
- Replica exchange molecular dynamics
- SASA, solvent accessible surface area
- WT, wild type tropoelastin
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Affiliation(s)
- Jazmin Ozsvar
- Charles Perkins Centre, the University of Sydney, 2006 Sydney, NSW, Australia.,School of Life and Environmental Sciences, The University of Sydney, 2006 Sydney, NSW, Australia.,Cell Therapy Manufacturing Cooperative Research Centre, Adelaide, 5000, SA, Australia
| | - Anna Tarakanova
- Laboratory for Atomistic and Molecular Mechanics (LAMM), Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Richard Wang
- Charles Perkins Centre, the University of Sydney, 2006 Sydney, NSW, Australia.,School of Life and Environmental Sciences, The University of Sydney, 2006 Sydney, NSW, Australia
| | - Markus J Buehler
- Laboratory for Atomistic and Molecular Mechanics (LAMM), Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Anthony S Weiss
- Charles Perkins Centre, the University of Sydney, 2006 Sydney, NSW, Australia.,School of Life and Environmental Sciences, The University of Sydney, 2006 Sydney, NSW, Australia.,Cell Therapy Manufacturing Cooperative Research Centre, Adelaide, 5000, SA, Australia.,Bosch Institute, The University of Sydney, 2006 Sydney, NSW, Australia.,Sydney Nano Institute, The University of Sydney, 2006 Sydney, NSW, Australia
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17
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Qi YF, Shu C, Xiao ZX, Luo MY, Fang K, Guo YY, Zhang WB, Yue J. Post-Transcriptional Control of Tropoelastin in Aortic Smooth Muscle Cells Affects Aortic Dissection Onset. Mol Cells 2018; 41:198-206. [PMID: 29487278 PMCID: PMC5881093 DOI: 10.14348/molcells.2018.2193] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Revised: 12/15/2017] [Accepted: 12/21/2017] [Indexed: 11/27/2022] Open
Abstract
Aortic dissection (AD) is a catastrophic disease with high mortality and morbidity, characterized with fragmentation of elastin and loss of smooth muscle cells. Although AD has been largely attributable to polymorphisms defect in the elastin-coding gene, tropoelastin (TE), other undermined factors also appear to play roles in AD onset. Here, we investigated the effects of post-transcriptional control of TE by microRNAs (miRNAs) on elastin levels in aortic smooth muscle cells (ASMC). We found that miR-144-3p is a miRNA that targets TE mRNA in both human and mouse. Bioinformatics analyses and dual luciferase reporter assay showed that miR-144-3p inhibited protein translation of TE, through binding to the 3'-UTR of the TE mRNA. Interestingly, higher miR-144-3p levels and lower TE were detected in the ASMC obtained from AD patients, compared to those from non-AD controls. In a mouse model for human AD, infusion of adeno-associated viruses (serotype 6) carrying antisense for miR-144-3p (as-miR-144-3p) under CAG promoter significantly reduced the incidence and severity of AD, seemingly through enhancement of TE levels in ASMC. Thus, our data suggest an essential role of miR-144-3p on the pathogenesis of AD.
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Affiliation(s)
- You-Fei Qi
- Department of Vascular Surgery, the Second Xiang-ya Hospital, Central South University, Changsha 410011,
China
- Department of Vascular Surgery, Hainan General Hospital, Haikou 570311,
China
| | - Chang Shu
- Department of Vascular Surgery, the Second Xiang-ya Hospital, Central South University, Changsha 410011,
China
- Center of Vascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037,
China
| | - Zhan-Xiang Xiao
- Department of Vascular Surgery, Hainan General Hospital, Haikou 570311,
China
| | - Ming-Yao Luo
- Center of Vascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037,
China
| | - Kun Fang
- Center of Vascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037,
China
| | - Yuan-Yuan Guo
- Department of Vascular Surgery, Fuwai Yunnan Cardiovascular Hospital, Kunming 650032,
China
| | - Wen-Bo Zhang
- Department of Vascular Surgery, Hainan General Hospital, Haikou 570311,
China
| | - Jie Yue
- Department of Vascular Surgery, Hainan General Hospital, Haikou 570311,
China
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