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Guillot A, Toussaint K, Ebersold L, ElBtaouri H, Thiebault E, Issad T, Peiretti F, Maurice P, Sartelet H, Bennasroune A, Martiny L, Dauchez M, Duca L, Durlach V, Romier B, Baud S, Blaise S. Sialic acids cleavage induced by elastin-derived peptides impairs the interaction between insulin and its receptor in adipocytes 3T3-L1. J Physiol Biochem 2024; 80:363-379. [PMID: 38393636 DOI: 10.1007/s13105-024-01010-5] [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: 06/23/2023] [Accepted: 02/08/2024] [Indexed: 02/25/2024]
Abstract
The insulin receptor (IR) plays an important role in insulin signal transduction, the defect of which is believed to be the root cause of type 2 diabetes. In 3T3-L1 adipocytes as in other cell types, the mature IR is a heterotetrameric cell surface glycoprotein composed of two α subunits and two β subunits. Our objective in our study, is to understand how the desialylation of N-glycan chains, induced by elastin-derived peptides, plays a major role in the function of the IR. Using the 3T3-L1 adipocyte line, we show that removal of the sialic acid from N-glycan chains (N893 and N908), induced by the elastin receptor complex (ERC) and elastin derived-peptides (EDPs), leads to a decrease in the autophosphorylation activity of the insulin receptor. We demonstrate by molecular dynamics approaches that the absence of sialic acids on one of these two sites is sufficient to generate local and general modifications of the structure of the IR. Biochemical approaches highlight a decrease in the interaction between insulin and its receptor when ERC sialidase activity is induced by EDPs. Therefore, desialylation by EDPs is synonymous with a decrease of IR sensitivity in adipocytes and could thus be a potential source of insulin resistance associated with diabetic conditions.
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Affiliation(s)
- Alexandre Guillot
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
| | - Kevin Toussaint
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
| | - Lucrece Ebersold
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
| | - Hassan ElBtaouri
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
| | - Emilie Thiebault
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
| | - Tarik Issad
- Université Paris Cité, Institut Cochin, CNRS, INSERM, 24 Rue du Faubourg Saint-Jacques, 75014, Paris, France
| | - Franck Peiretti
- INSERM, INRAE, C2VN, Aix Marseille University, 27 Bd Jean Moulin, 13385, Marseille, France
| | - Pascal Maurice
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
| | - Hervé Sartelet
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
| | - Amar Bennasroune
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
| | - Laurent Martiny
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
| | - Manuel Dauchez
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
- P3M, Multi-Scale Molecular Modeling Platform, Université de Reims Champagne Ardenne, 51100, Reims, France
| | - Laurent Duca
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
| | - Vincent Durlach
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
- Cardiovascular and Thoracic Division, University Hospital of Reims, 51100, Reims, France
| | - Béatrice Romier
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
| | - Stéphanie Baud
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France
- P3M, Multi-Scale Molecular Modeling Platform, Université de Reims Champagne Ardenne, 51100, Reims, France
| | - Sébastien Blaise
- UMR CNRS 7369 MEDyC, University of Reims Champagne-Ardenne, UFR SEN, chemin des Rouliers, 51100, Reims, France.
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Depenveiller C, Baud S, Belloy N, Bochicchio B, Dandurand J, Dauchez M, Pepe A, Pomès R, Samouillan V, Debelle L. Structural and physical basis for the elasticity of elastin. Q Rev Biophys 2024; 57:e3. [PMID: 38501287 DOI: 10.1017/s0033583524000040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Elastin function is to endow vertebrate tissues with elasticity so that they can adapt to local mechanical constraints. The hydrophobicity and insolubility of the mature elastin polymer have hampered studies of its molecular organisation and structure-elasticity relationships. Nevertheless, a growing number of studies from a broad range of disciplines have provided invaluable insights, and several structural models of elastin have been proposed. However, many questions remain regarding how the primary sequence of elastin (and the soluble precursor tropoelastin) governs the molecular structure, its organisation into a polymeric network, and the mechanical properties of the resulting material. The elasticity of elastin is known to be largely entropic in origin, a property that is understood to arise from both its disordered molecular structure and its hydrophobic character. Despite a high degree of hydrophobicity, elastin does not form compact, water-excluding domains and remains highly disordered. However, elastin contains both stable and labile secondary structure elements. Current models of elastin structure and function are drawn from data collected on tropoelastin and on elastin-like peptides (ELPs) but at the tissue level, elasticity is only achieved after polymerisation of the mature elastin. In tissues, the reticulation of tropoelastin chains in water defines the polymer elastin that bears elasticity. Similarly, ELPs require polymerisation to become elastic. There is considerable interest in elastin especially in the biomaterials and cosmetic fields where ELPs are widely used. This review aims to provide an up-to-date survey of/perspective on current knowledge about the interplay between elastin structure, solvation, and entropic elasticity.
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Affiliation(s)
- Camille Depenveiller
- UMR URCA/CNRS 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), UFR Sciences Exactes et Naturelles, SFR CAP Santé, Université de Reims Champagne-Ardenne, Reims, France
- Unité de Génie Enzymatique et Cellulaire UMR 7025 CNRS, Université de Picardie Jules Verne, Amiens, France
| | - Stéphanie Baud
- UMR URCA/CNRS 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), UFR Sciences Exactes et Naturelles, SFR CAP Santé, Université de Reims Champagne-Ardenne, Reims, France
| | - Nicolas Belloy
- UMR URCA/CNRS 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), UFR Sciences Exactes et Naturelles, SFR CAP Santé, Université de Reims Champagne-Ardenne, Reims, France
| | - Brigida Bochicchio
- Laboratory of Bioinspired Materials, Department of Science, University of Basilicata, Potenza, Italy
| | - Jany Dandurand
- CIRIMAT UMR 5085, Université Paul Sabatier, Université de Toulouse, Toulouse, France
| | - Manuel Dauchez
- UMR URCA/CNRS 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), UFR Sciences Exactes et Naturelles, SFR CAP Santé, Université de Reims Champagne-Ardenne, Reims, France
| | - Antonietta Pepe
- Laboratory of Bioinspired Materials, Department of Science, University of Basilicata, Potenza, Italy
| | - Régis Pomès
- Molecular Medicine, Hospital for Sick Children, Toronto, ON, Canada
- Department of Biochemistry, University of Toronto, Toronto, ON, Canada
| | - Valérie Samouillan
- CIRIMAT UMR 5085, Université Paul Sabatier, Université de Toulouse, Toulouse, France
| | - Laurent Debelle
- UMR URCA/CNRS 7369, Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), UFR Sciences Exactes et Naturelles, SFR CAP Santé, Université de Reims Champagne-Ardenne, Reims, France
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3
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Sun Q, Zhang X, Gao M, Zhang C, Peng B. Resource Utilization of Bovine Neck Ligament: Enzymatic Preparation of Elastin Peptide and Its Antioxidant Activity. Appl Biochem Biotechnol 2023; 195:33-50. [PMID: 35932368 DOI: 10.1007/s12010-022-04102-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2022] [Indexed: 01/13/2023]
Abstract
Elastin is considered an excellent resource for obtaining antioxidant peptides due to unique amino acid composition. However, it is hardly soluble in water or in dilute acid or alkali; most of the elastases have low yields for preparing elastin peptides, making it difficult to meet industrial applications. To address above problems, enzymes capable of hydrolyzing elastin into soluble peptides were preferred from typical commercial protease preparations. The optimal enzymatic hydrolysis process conditions for elastin peptides were obtained by response surface optimization design. The molecular weight, amino acid composition, and antioxidant activity of the enzymatic hydrolysis products were determined. The results show that the alkaline protease NUE has a strong hydrolysis effect. The optimized enzymatic hydrolysis conditions are as follows: substrate concentration is 5%, enzyme concentration is 650 U/mL, pH is 10.0, temperature is 60 °C, time is 6 h. The degree of hydrolysis of elastic protein peptides obtained through this method is 14.42%. The distribution of molecular weight is 200-6500 Da, more than 85% of the component molecular amount is greater than 800 Da; the amino acid content related to antioxidant activity has reached 68 mg/100 mg, so it has extremely high free radical clearance. Compared with acid and alkali methods, the anti-oxidation capacity of enzyme-based peptide is better, the reaction conditions are milder, the yield is higher, and by-products and pollutants are fewer. It provides an effective way to industrialized production of elastin peptides with high antioxidant activity and a basis for its widespread application in the food and pharmaceutical industries.
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Affiliation(s)
- Qiao Sun
- National Engineering Research Center for Clean Technology in Leather Industry, Sichuan University, Chengdu, 610065, People's Republic of China.,Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Xu Zhang
- National Engineering Research Center for Clean Technology in Leather Industry, Sichuan University, Chengdu, 610065, People's Republic of China.,Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Mengchu Gao
- National Engineering Research Center for Clean Technology in Leather Industry, Sichuan University, Chengdu, 610065, People's Republic of China.,Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Chunxiao Zhang
- National Engineering Research Center for Clean Technology in Leather Industry, Sichuan University, Chengdu, 610065, People's Republic of China.,Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Biyu Peng
- National Engineering Research Center for Clean Technology in Leather Industry, Sichuan University, Chengdu, 610065, People's Republic of China. .,Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu, 610065, People's Republic of China. .,College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China.
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4
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Biomimetic and Bioactive Small Diameter Tubular Scaffolds for Vascular Tissue Engineering. Biomimetics (Basel) 2022; 7:biomimetics7040199. [PMID: 36412727 PMCID: PMC9680506 DOI: 10.3390/biomimetics7040199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/03/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022] Open
Abstract
The present work aimed at the production and characterization of small caliber biomimetic and bioactive tubular scaffolds, which are able to favor the endothelialization process, and therefore potentially be suitable for vascular tissue engineering. The tubular scaffolds were produced using a specially designed mold, starting from a gelatin/gellan/elastin (GGE) blend, selected to mimic the composition of the extracellular matrix of native blood vessels. GGE scaffolds were obtained through freeze-drying and subsequent cross-linking. To obtain systems capable of promoting endothelization, the scaffolds were functionalized using two different bioactive peptides, Gly-Arg-Gly-Asp-Ser-Pro (GRGSDP) and Arg-Glu-Asp-Val (REDV). A complete physicochemical, mechanical, functional, and biological characterization of the developed scaffolds was performed. GGE scaffolds showed a good porosity, which could promote cell infiltration and proliferation and a dense external surface, which could avoid bleeding. Moreover, developed scaffolds showed good hydrophilicity, an elastic behavior similar to natural vessels, suitability for sterilization by an ISO accepted treatment, and an adequate suture retention strength. In vitro cell culture tests showed no cytotoxic activity against 3T3 fibroblasts. The functionalization with the REDV peptide favored the adhesion and growth of endothelial cells, while GRGDSP-modified scaffolds represented a better substrate for fibroblasts.
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5
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Zhuravleva IY, Karpova EV, Dokuchaeva AA, Kuznetsova EV, Vladimirov SV, Ksenofontov AL, Nichay NR. Bovine jugular vein conduit: What affects its elastomechanical properties and thermostability? J Biomed Mater Res A 2021; 110:394-408. [PMID: 34390309 DOI: 10.1002/jbm.a.37296] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 07/23/2021] [Accepted: 08/03/2021] [Indexed: 12/12/2022]
Abstract
The aim of this study was to compare the mechanical properties and thermal stability of the venous wall depending on the treatment method used, and, accordingly, on those structural changes in the tissue that this treatment causes. Bovine jugular vein walls (BJVWs) cross-linked with glutaraldehyde (GA), ethylene glycol diglycidyl ether (DE), and Contegra commercial conduit were evaluated using uniaxial stretching [with and without pre-conditioning (PreC)], differential scanning calorimetry, amino acid analysis, and attenuated total reflection infrared spectroscopy. Fresh BJVW was used as a control. It was shown that failure stress in non-PreC GA-treated and DE-treated materials was lower than that in fresh and Contegra counterparts. Contegra samples were the stiffest among the tested materials. Cyclic preloading leads to distortion of the mechanical behavior of this material, which is heterogeneous in composition and structure. The denaturation temperatures (Td ) of all cross-linked BJVWs were higher than the Td of the fresh vein. The microstructures of the tested BJVWs did not exhibit any differences, but the cross-linking density and hydration of the DE-vein were the highest. GA-cross-linking or DE-cross-linking and isopropanol exposure (Contegra) changed the protein secondary structures of the tested materials in different ways. We hypothesized that the protein secondary structure and hydration degree are the main causes of differences in the mechanical properties and thermal stability of BJVW.
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Affiliation(s)
- Irina Yu Zhuravleva
- E. Meshalkin National Medical Research Center of the RF Ministry of Health, Novosibirsk, Russian Federation
| | - Elena V Karpova
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Novosibirsk, Russian Federation
| | - Anna A Dokuchaeva
- E. Meshalkin National Medical Research Center of the RF Ministry of Health, Novosibirsk, Russian Federation
| | - Elena V Kuznetsova
- E. Meshalkin National Medical Research Center of the RF Ministry of Health, Novosibirsk, Russian Federation
| | - Sergei V Vladimirov
- E. Meshalkin National Medical Research Center of the RF Ministry of Health, Novosibirsk, Russian Federation
| | - Alexander L Ksenofontov
- A. Belozersky Research Institute of Physico-Chemical Biology MSU, Moscow, Russian Federation
| | - Natalia R Nichay
- E. Meshalkin National Medical Research Center of the RF Ministry of Health, Novosibirsk, Russian Federation
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Dandurand J, Dantras E, Lacabanne C, Pepe A, Bochicchio B, Samouillan V. Thermal and dielectric fingerprints of self-assembling elastin peptides derived from exon30. AIMS BIOPHYSICS 2021. [DOI: 10.3934/biophy.2021018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Djajamuliadi J, Ohgo K, Kumashiro KK. A Two-State Model Describes the Temperature-Dependent Conformational Equilibrium in the Alanine-Rich Domains in Elastin. J Phys Chem B 2020; 124:9017-9028. [PMID: 32936634 DOI: 10.1021/acs.jpcb.0c06811] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Elastin is the insoluble elastomeric protein that provides extensibility and resilience to vertebrate tissues. Limited high-resolution structural data for elastin are notably complex. To access this information, this protein is considered in the simplified context of its two general domain types, that is, hydrophobic (HP) and crosslinking (CL). The question of elastin's structure-function has directed the focus of nearly all previous studies in the literature to the unique repeating sequences characteristic of this protein, found primarily in the HP domains. The CL domains were assumed to play a very limited role in biological elasticity due in part to the significant α-helical character that was (incorrectly) predicted for these regions. In this study, the conformational heterogeneity of alanines in native elastin's CL domains is examined in the context of helix-coil transition theory (HCTT) using solid-state nuclear magnetic resonance (SSNMR) spectroscopy in tandem with strategic isotopic labeling. Helix and coil populations are observed at all temperatures, but the former increases significantly at lower temperatures. Below the glass transition temperature (Tg), two major populations of alanines in the CL regions are resolved by two-dimensional SSNMR; one-dimensional methods are used for characterization in nativelike conditions. The spectra of 13CO-Ala in the CL regions are simulated using an HCTT-based statistical mechanical representation. Below Tg, longer segments with significant helical probabilities are consistent with the experimental data. At higher temperatures, the SSNMR lineshapes are best fit with a distribution of shorter (Ala)n segments, most in random coil. These results are used to refine a structure-function model for elastin in the context of HCTT, redirecting attention to the CL domains and their role in elasticity.
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Affiliation(s)
- Jhonsen Djajamuliadi
- Department of Chemistry, University of Hawaii, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Kosuke Ohgo
- Department of Chemistry, University of Hawaii, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Kristin K Kumashiro
- Department of Chemistry, University of Hawaii, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
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Hernández B, Crowet JM, Thiery J, Kruglik SG, Belloy N, Baud S, Dauchez M, Debelle L. Structural Analysis of Nonapeptides Derived from Elastin. Biophys J 2020; 118:2755-2768. [PMID: 32396850 DOI: 10.1016/j.bpj.2020.04.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 03/09/2020] [Accepted: 04/13/2020] [Indexed: 12/28/2022] Open
Abstract
Elastin-derived peptides are released from the extracellular matrix remodeling by numerous proteases and seem to regulate many biological processes, notably cancer progression. The canonical elastin peptide is VGVAPG, which harbors the XGXXPG consensus pattern, allowing interaction with the elastin receptor complex located at the surface of cells. Besides these elastokines, another class of peptides has been identified. This group of bioactive elastin peptides presents the XGXPGXGXG consensus sequence, but the reason for their bioactivity remains unexplained. To better understand their nature and structure-function relationships, herein we searched the current databases for this nonapeptide motif and observed that the XGXPGXGXG elastin peptides define a specific group of tandemly repeated patterns. Further, we focused on four tandemly repeated human elastin nonapeptides, i.e., AGIPGLGVG, VGVPGLGVG, AGVPGLGVG, and AGVPGFGAG. These peptides were analyzed by means of optical spectroscopies and molecular dynamics. Ultraviolet-circular dichroism and Raman spectra are consistent with a mixture of β-turn, β-strand, and random-chain secondary elements in aqueous media. Quantitative analysis of their conformations suggested that turns corresponded to half of the total population of structural elements, whereas the remaining half were equally distributed between β-strand and unordered chains. These distributions were confirmed by molecular dynamics simulations. Altogether, our data suggest that these highly dynamic peptides harbor a type II β-turn located in their central part. We hypothesize that this structural element could explain their specific bioactivity.
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Affiliation(s)
- Belén Hernández
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne Ardenne, UFR Sciences Exactes et Naturelles, Reims, France; Groupe de Biophysique Moléculaire, Sorbonne Paris Cité, Université Paris 13, UFR Santé-Médecine-Biologie Humaine, Bobigny, France
| | - Jean-Marc Crowet
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne Ardenne, UFR Sciences Exactes et Naturelles, Reims, France; Multiscale Molecular Modeling Platform, Université de Reims Champagne Ardenne, Reims, France
| | - Joseph Thiery
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne Ardenne, UFR Sciences Exactes et Naturelles, Reims, France
| | - Sergei G Kruglik
- UMR CNRS 8237, Laboratoire Jean-Perrin, Sorbonne Université, UPMC Paris 06, Paris, France
| | - Nicolas Belloy
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne Ardenne, UFR Sciences Exactes et Naturelles, Reims, France; Multiscale Molecular Modeling Platform, Université de Reims Champagne Ardenne, Reims, France
| | - Stéphanie Baud
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne Ardenne, UFR Sciences Exactes et Naturelles, Reims, France; Multiscale Molecular Modeling Platform, Université de Reims Champagne Ardenne, Reims, France
| | - Manuel Dauchez
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne Ardenne, UFR Sciences Exactes et Naturelles, Reims, France; Multiscale Molecular Modeling Platform, Université de Reims Champagne Ardenne, Reims, France
| | - Laurent Debelle
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne Ardenne, UFR Sciences Exactes et Naturelles, Reims, France; Multiscale Molecular Modeling Platform, Université de Reims Champagne Ardenne, Reims, France.
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Tang Y, Li D, Cao D, Xu W. Extracting biomolecule collision cross sections from FT-ICR mass spectral line shape. Talanta 2019; 205:120093. [PMID: 31450431 DOI: 10.1016/j.talanta.2019.06.093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 06/19/2019] [Accepted: 06/26/2019] [Indexed: 10/26/2022]
Abstract
To extend the ion structure analysis capability of Fourier transform mass spectrometry (FT-MS), both time-domain and frequency-domain methods have been developed to extract ion collision cross sections (CCS) from high resolution mass spectra in Fourier transform ion cyclotron resonance (FT-ICR) cells. In this study, a new frequency-domain method, namely the line shape fitting method, was proposed to calculate ion CCSs from FT-ICR mass spectra line shape. Besides experimental data, simulated data with precisely controlled signal to noise levels and decay factors were also applied to characterize this method. Compared with the linewidth correction method previously proposed by our group, this line shape fitting method is more tolerant to noise, data length, and sampling rate, thus providing more consistent results. More importantly, CCS measurements of angiotensin I, bradykinin, ubiquitin and cytochrome c show that the resolving power is improved with the new method.
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Affiliation(s)
- Yang Tang
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, China
| | - Dayu Li
- School of Computer Science and Engineering, Northeastern University, Shenyang, 110819, China.
| | - Dong Cao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, Chinese Academy of Science, Beijing 100085, China
| | - Wei Xu
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, China.
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Gourgas O, Muiznieks LD, Bello DG, Nanci A, Sharpe S, Cerruti M. Cross-Linked Elastin-like Polypeptide Membranes as a Model for Medial Arterial Calcification. Biomacromolecules 2019; 20:2625-2636. [DOI: 10.1021/acs.biomac.9b00417] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Ophélie Gourgas
- Department of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Lisa D. Muiznieks
- Molecular Medicine, Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
| | - Dainelys Guadarrama Bello
- Department of Stomatology, Faculty of Dental Medicine, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
| | - Antonio Nanci
- Department of Stomatology, Faculty of Dental Medicine, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
| | - Simon Sharpe
- Molecular Medicine, Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
- Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Marta Cerruti
- Department of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
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Wang W, Lee C, Pastuszka M, Laurie GW, MacKay JA. Thermally-Responsive Loading and Release of Elastin-Like Polypeptides from Contact Lenses. Pharmaceutics 2019; 11:E221. [PMID: 31067782 PMCID: PMC6572635 DOI: 10.3390/pharmaceutics11050221] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/20/2019] [Accepted: 04/24/2019] [Indexed: 11/16/2022] Open
Abstract
Contact lenses are widely prescribed for vision correction, and as such they are an attractive platform for drug delivery to the anterior segment of the eye. This manuscript explores a novel strategy to drive the reversible adsorption of peptide-based therapeutics using commercially available contact lenses. To accomplish this, thermo-sensitive elastin-like polypeptides (ELPs) alone or tagged with a candidate ocular therapeutic were characterized. For the first time, this manuscript demonstrates that Proclear CompatiblesTM contact lenses are a suitable platform for ELP adsorption. Two rhodamine-labelled ELPs, V96 (thermo-sensitive) and S96 (thermo-insensitive), were employed to test temperature-dependent association to the contact lenses. During long-term release into solution, ELP coacervation significantly modulated the release profile whereby more than 80% of loaded V96 retained with a terminal half-life of ~4 months, which was only 1-4 days under solubilizing conditions. A selected ocular therapeutic candidate lacritin-V96 fusion (LV96), either free or lens-bound LV96, was successfully transferred to HCE-T cells. These data suggest that ELPs may be useful to control loading or release from certain formulations of contact lenses and present a potential for this platform to deliver a biologically active peptide to the ocular surface via contact lenses.
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Affiliation(s)
- Wan Wang
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90033, USA.
| | - Changrim Lee
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90033, USA.
| | - Martha Pastuszka
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90033, USA.
| | - Gordon W Laurie
- Department of Cell Biology, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA.
| | - J Andrew MacKay
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90033, USA.
- Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA.
- Department of Ophthalmology, USC Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA.
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12
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Scelsi A, Bochicchio B, Smith A, Workman VL, Castillo Diaz LA, Saiani A, Pepe A. Tuning of hydrogel stiffness using a two-component peptide system for mammalian cell culture. J Biomed Mater Res A 2019; 107:535-544. [PMID: 30456777 PMCID: PMC6587839 DOI: 10.1002/jbm.a.36568] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 09/19/2018] [Accepted: 09/28/2018] [Indexed: 01/18/2023]
Abstract
Self-assembling peptide hydrogels (SAPHs) represent emerging cell cultures systems in several biomedical applications. The advantages of SAPHs are mainly ascribed to the absence of toxic chemical cross-linkers, the presence of ECM-like fibrillar structures and the possibility to produce hydrogels with a large range of different mechanical properties. We will present a two-component peptide system with tuneable mechanical properties, consisting of a small pentapeptide (SFFSF-NH2 , SA5N) that acts as a gelator and a larger 21-mer peptide (SFFSF-GVPGVGVPGVG-SFFSF, SA21) designed as a physical cross-linker. The hydrogels formed by different mixtures of the two peptides are made up mainly of antiparallel β-sheet nanofibers entangling in an intricate network. The effect of the addition of SA21 on the morphology of the hydrogels was investigated by atomic force microscopy and transmission electron microscopy and correlated to the mechanical properties of the hydrogel. Finally, the biocompatibility of the hydrogels using 2D cell cultures was tested. © 2018 The Authors. journal Of Biomedical Materials Research Part A Published By Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 535-544, 2019.
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Affiliation(s)
- Alessandra Scelsi
- Laboratory of Bioinspired Materials, Department of ScienceUniversity of BasilicataPotenzaItaly
- PhD School of Science, University of BasilicataPotenzaItaly
| | - Brigida Bochicchio
- Laboratory of Bioinspired Materials, Department of ScienceUniversity of BasilicataPotenzaItaly
| | - Andrew Smith
- School of Materials and Manchester Institute of Biotechnology, The University of ManchesterManchesterUnited Kingdom
| | - Victoria L. Workman
- School of Materials and Manchester Institute of Biotechnology, The University of ManchesterManchesterUnited Kingdom
| | - Luis A. Castillo Diaz
- School of Materials and Manchester Institute of Biotechnology, The University of ManchesterManchesterUnited Kingdom
- Biotecnología Médica y Farmacéutica. Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco (CIATEJ)GuadalajaraMexico
| | - Alberto Saiani
- School of Materials and Manchester Institute of Biotechnology, The University of ManchesterManchesterUnited Kingdom
| | - Antonietta Pepe
- Laboratory of Bioinspired Materials, Department of ScienceUniversity of BasilicataPotenzaItaly
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13
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Ramírez-Guerra HE, Márquez-Ríos E, Suárez-Jiménez GM, Rouzaud-Sández O, Lugo-Sánchez ME, Ramírez-Suárez JC, Torres-Arreola W. Physicochemical and Structural Properties of Recovered Elastin from Jumbo Squid (Dosidicus gigas) By-Products. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2019. [DOI: 10.1080/10498850.2019.1577932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Hugo E. Ramírez-Guerra
- Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Hermosillo, Sonora, México
| | - Enrique Márquez-Ríos
- Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Hermosillo, Sonora, México
| | | | - Ofelia Rouzaud-Sández
- Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Hermosillo, Sonora, México
| | | | | | - Wilfrido Torres-Arreola
- Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Hermosillo, Sonora, México
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14
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Salesse S, Odoul L, Chazée L, Garbar C, Duca L, Martiny L, Mahmoudi R, Debelle L. Elastin molecular aging promotes MDA-MB-231 breast cancer cell invasiveness. FEBS Open Bio 2018; 8:1395-1404. [PMID: 30186741 PMCID: PMC6120250 DOI: 10.1002/2211-5463.12455] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 03/30/2018] [Accepted: 05/15/2018] [Indexed: 01/22/2023] Open
Abstract
Elastin is a long-lived extracellular matrix protein responsible for the structural integrity and function of tissues. Breast cancer elastosis is a complex phenomenon resulting in both the deposition of elastotic masses and the local production of elastin fragments. In invasive human breast cancers, an increase in elastosis is correlated with severity of the disease and age of the patient. Elastin-derived peptides (EDPs) are a hallmark of aging and are matrikines - matrix fragments having the ability to regulate cell physiology. They are known to promote processes linked to tumor progression, but their effects on breast cancer cells remain unexplored. Our data show that EDPs enhance the invasiveness of MDA-MB-231 breast cancer cells through the engagement of matrix metalloproteases 14 and 2. We therefore suggest that elastosis and/or an aged stroma could promote breast cancer cell invasiveness.
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Affiliation(s)
- Stéphanie Salesse
- UMR CNRS/URCA 7369 SFR CAP Santé Faculty of Sciences University of Reims Champagne-Ardenne France
| | - Ludivine Odoul
- UMR CNRS/URCA 7369 SFR CAP Santé Faculty of Sciences University of Reims Champagne-Ardenne France
| | - Lise Chazée
- UMR CNRS/URCA 7369 SFR CAP Santé Faculty of Sciences University of Reims Champagne-Ardenne France
| | - Christian Garbar
- Biopathology Department Institut Jean Godinot-Unicancer Reims France.,DERM-I-C EA7319 Université de Reims Champagne Ardenne France
| | - Laurent Duca
- UMR CNRS/URCA 7369 SFR CAP Santé Faculty of Sciences University of Reims Champagne-Ardenne France
| | - Laurent Martiny
- UMR CNRS/URCA 7369 SFR CAP Santé Faculty of Sciences University of Reims Champagne-Ardenne France
| | - Rachid Mahmoudi
- Faculty of Medicine, EA3797 University of Reims Champagne-Ardenne France.,Department of Geriatrics and Internal Medicine Maison Blanche Hospital Reims University Hospitals France
| | - Laurent Debelle
- UMR CNRS/URCA 7369 SFR CAP Santé Faculty of Sciences University of Reims Champagne-Ardenne France
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15
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Silva R, Singh R, Sarker B, Papageorgiou DG, Juhasz-Bortuzzo JA, Roether JA, Cicha I, Kaschta J, Schubert DW, Chrissafis K, Detsch R, Boccaccini AR. Hydrogel matrices based on elastin and alginate for tissue engineering applications. Int J Biol Macromol 2018; 114:614-625. [PMID: 29572141 DOI: 10.1016/j.ijbiomac.2018.03.091] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 02/21/2018] [Accepted: 03/19/2018] [Indexed: 10/17/2022]
Abstract
Hydrogels from natural polymers are widely used in tissue engineering due to their unique properties, especially when regarding the cell environment and their morphological similarity to the extracellular matrix (ECM) of native tissues. In this study, we describe the production and characterization of novel hybrid hydrogels composed of alginate blended with elastin from bovine neck ligament. The properties of elastin as a component of the native ECM were combined with the excellent chemical and mechanical stability as well as biocompatibility of alginate to produce two hybrid hydrogels geometries, namely 2D films obtained using sonication treatment and 3D microcapsules produced by pressure-driven extrusion. The resulting blend hydrogels were submitted to an extensive physico-chemical characterization. Furthermore, the biological compatibility of these materials was assessed using normal human dermal fibroblasts, indicating the suitability of this blend for soft tissue engineering.
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Affiliation(s)
- Raquel Silva
- Institute of Briomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
| | - Raminder Singh
- Cardiovascular Nanomedicine Unit, Section of Experimental Oncology and Nanomedicine, ENT Department, University Hospital Erlangen, 91054 Erlangen, Germany; Laboratory of Molecular Cardiology, Medical Clinic 2, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Bapi Sarker
- Institute of Briomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Dimitrios G Papageorgiou
- Solid State Physics Section, Physics Department, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece; School of Materials and National Graphene Institute, University of Manchester, Oxford Road, M13 9PL Manchester, United Kingdom
| | - Judith A Juhasz-Bortuzzo
- Institute of Briomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Judith A Roether
- Institute for Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Iwona Cicha
- Cardiovascular Nanomedicine Unit, Section of Experimental Oncology and Nanomedicine, ENT Department, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Joachim Kaschta
- Institute for Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Dirk W Schubert
- Institute for Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Konstantinos Chrissafis
- Solid State Physics Section, Physics Department, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Rainer Detsch
- Institute of Briomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Briomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
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16
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Greenland KN, Carvajal MFCA, Preston JM, Ekblad S, Dean WL, Chiang JY, Koder RL, Wittebort RJ. Order, Disorder, and Temperature-Driven Compaction in a Designed Elastin Protein. J Phys Chem B 2018; 122:2725-2736. [PMID: 29461832 DOI: 10.1021/acs.jpcb.7b11596] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Artificial minielastin constructs have been designed that replicate the structure and function of natural elastins in a simpler context, allowing the NMR observation of structure and dynamics of elastin-like proteins with complete residue-specific resolution. We find that the alanine-rich cross-linking domains of elastin have a partially helical structure, but only when capped by proline-rich hydrophobic domains. We also find that the hydrophobic domains, composed of prominent 6-residue repeats VPGVGG and APGVGV found in natural elastins, appear random coil by both NMR chemical shift analysis and circular dichroism. However, these elastin hydrophobic domains exhibit structural bias for a dynamically disordered conformation that is neither helical nor β sheet with a degree of nonrandom structural bias which is dependent on residue type and position in the sequence. Another nonrandom-coil aspect of hydrophobic domain structure lies in the fact that, in contrast to other intrinsically disordered proteins, these hydrophobic domains retain a relatively condensed conformation whether attached to cross-linking domains or not. Importantly, these domains and the proteins containing them constrict with increasing temperature by up to 30% in volume without becoming more ordered. This property is often observed in nonbiological polymers and suggests that temperature-driven constriction is a new type of protein structural change that is linked to elastin's biological functions of coacervation-driven assembly and elastic recoil.
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Affiliation(s)
- Kelly N Greenland
- Department of Physics , The City College of New York , New York , New York 10031 , United States
| | | | - Jonathan M Preston
- Department of Physics , The City College of New York , New York , New York 10031 , United States
| | - Siri Ekblad
- Department of Physics , The City College of New York , New York , New York 10031 , United States
| | - William L Dean
- Department of Biochemistry and Molecular Genetics and the James Brown Cancer Center , University of Louisville School of Medicine , Louisville , Kentucky 40292 , United States
| | - Jeff Y Chiang
- Department of Physics , The City College of New York , New York , New York 10031 , United States
| | - Ronald L Koder
- Department of Physics , The City College of New York , New York , New York 10031 , United States.,Graduate Programs of Physics, Chemistry and Biochemistry , The Graduate Center of CUNY , New York , New York 10016 , United States
| | - Richard J Wittebort
- Department of Chemistry , University of Louisville , Louisville , Kentucky 40292 , United States
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17
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Ohgo K, Dabalos CL, Kumashiro KK. Solid-State NMR Spectroscopy and Isotopic Labeling Target Abundant Dipeptide Sequences in Elastin’s Hydrophobic Domains. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02616] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kosuke Ohgo
- Department of Chemistry, University of Hawaii, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Chester L. Dabalos
- Department of Chemistry, University of Hawaii, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Kristin K. Kumashiro
- Department of Chemistry, University of Hawaii, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
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18
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Heiny M, Shastri VP. Nanofibers of Elastin and Hydrophilic Segmented Polyurethane Solution Blends Show Enhanced Mechanical Properties through Intermolecular Protein–Polymer H Bonding. Biomacromolecules 2016; 17:1312-20. [DOI: 10.1021/acs.biomac.5b01681] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Markus Heiny
- Institute for Macromolecular
Chemistry, Hermann Staudinger Haus, University of Freiburg, Stefan-Meier
Str. 31, 79104 Freiburg, Germany
- BIOSS Centre for Biological
Signalling Studies, University of Freiburg, Schänzlestr. 18, 79104 Freiburg, Germany
| | - V. Prasad Shastri
- Institute for Macromolecular
Chemistry, Hermann Staudinger Haus, University of Freiburg, Stefan-Meier
Str. 31, 79104 Freiburg, Germany
- BIOSS Centre for Biological
Signalling Studies, University of Freiburg, Schänzlestr. 18, 79104 Freiburg, Germany
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19
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Li D, Tang Y, Xu W. Ion collision cross section measurements in Fourier transform-based mass analyzers. Analyst 2016; 141:3554-61. [DOI: 10.1039/c5an02164b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
High-vacuum ion collision cross section (CCS) measurements in Fourier transform mass analyzers.
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Affiliation(s)
- Dayu Li
- College of Information Science and Engineering
- Northeastern University
- Shenyang 110004
- China
| | - Yang Tang
- School of Life Science
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Wei Xu
- School of Life Science
- Beijing Institute of Technology
- Beijing 100081
- China
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20
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Perticaroli S, Ehlers G, Jalarvo N, Katsaras J, Nickels JD. Elasticity and Inverse Temperature Transition in Elastin. J Phys Chem Lett 2015; 6:4018-4025. [PMID: 26722771 DOI: 10.1021/acs.jpclett.5b01890] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Elastin is a structural protein and biomaterial that provides elasticity and resilience to a range of tissues. This work provides insights into the elastic properties of elastin and its peculiar inverse temperature transition (ITT). These features are dependent on hydration of elastin and are driven by a similar mechanism of hydrophobic collapse to an entropically favorable state. Using neutron scattering, we quantify the changes in the geometry of molecular motions above and below the transition temperature, showing a reduction in the displacement of water-induced motions upon hydrophobic collapse at the ITT. We also measured the collective vibrations of elastin gels as a function of elongation, revealing no changes in the spectral features associated with local rigidity and secondary structure, in agreement with the entropic origin of elasticity.
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Affiliation(s)
- Stefania Perticaroli
- Joint Institute for Neutron Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
- Chemical and Materials Sciences Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
- Department of Chemistry, University of Tennessee , Knoxville, Tennessee 37996, United States
| | - Georg Ehlers
- Quantum Condensed Matter Division, Oak Ridge National Laboratory , P.O. Box 2008, Oak Ridge, Tennessee 37831, United States
| | - Niina Jalarvo
- Jülich Centre for Neutron Science (JCNS), Forschungszentrum Jülich , D-52425 Jülich, Germany
- Chemical and Engineering Materials Division, Neutron Sciences Directorate, and JCNS Outstation at the Spallation Neutron Source (SNS), Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - John Katsaras
- Joint Institute for Neutron Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
- Biology and Soft Matter Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Jonathan D Nickels
- Joint Institute for Neutron Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
- Biology and Soft Matter Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
- The Department of Physics and Astronomy, University of Tennessee, Knoxville , Knoxville, Tennessee 37996, United States
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21
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22
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Samouillan V, Revuelta-López E, Dandurand J, Nasarre L, Badimon L, Lacabanne C, Llorente-Cortés V. Cardiomyocyte intracellular cholesteryl ester accumulation promotes tropoelastin physical alteration and degradation: Role of LRP1 and cathepsin S. Int J Biochem Cell Biol 2014; 55:209-19. [PMID: 25218173 DOI: 10.1016/j.biocel.2014.09.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 09/01/2014] [Accepted: 09/03/2014] [Indexed: 11/26/2022]
Abstract
Dyslipemia has a direct impact on cardiac remodeling by altering extracellular matrix (ECM) components. One of the main ECM components is elastin, a proteic three-dimensional network that can be efficiently degraded by cysteine proteases or cathepsins. Dyslipemic status in insulin resistance and combined hyperlipoproteinemia diseases include raised levels of very low density lipoproteins (VLDL), triglyceride (TG)-cholesteryl ester (CE)-rich lipoproteins. Enhanced VLDL concentration promotes cardiomyocyte intracellular cholesteryl ester (CE) accumulation in a LRP1-dependent manner. The aim of this work was to analyze the effect of cardiomyocyte intracellular CE accumulation on tropoelastin (TE) characteristics and to investigate the role of LRP1 and cathepsin S (CatS) on these effects. Molecular studies showed that LRP1 deficiency impaired CE selective uptake and accumulation from TG-CE-rich lipoproteins (VLDL+IDL) and CE-rich lipoproteins (aggregated LDL, agLDL). Biochemical and confocal microscopic studies showed that LRP1-mediated intracellular CE accumulation increased CatS mature protein levels and induced an altered intracellular TE globule structure. Biophysical studies evidenced that LRP1-mediated intracellular CE accumulation caused a significant drop of Tg2 glass transition temperature of cardiomyocyte secreted TE. Moreover, CatS deficiency prevented the alterations in TE intracellular globule structure and on TE glass transition temperature. These results demonstrate that LRP1-mediated cardiomyocyte intracellular CE accumulation alters the structural and physical characteristics of secreted TE through an increase in CatS mature protein levels. Therefore, the modulation of LRP1-mediated intracellular CE accumulation in cardiomyocytes could impact pathological ventricular remodeling associated with insulin-resistance and combined hyperlipoproteinemia, pathologies characterized by enhanced concentrations of TG-CE-rich lipoproteins.
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Affiliation(s)
- Valerie Samouillan
- Physique des Polymères, Institut Carnot, CIRIMAT UMR 5085, Université Paul Sabatier, Bat 3R1B2, 118 route de Narbonne, 31062 Toulouse Cedex 04, France.
| | - Elena Revuelta-López
- Cardiovascular Research Center, CSIC-ICCC, IIB-Sant Pau, Hospital de la Santa Creu i Sant Pau, 08025 Barcelona, Spain
| | - Jany Dandurand
- Physique des Polymères, Institut Carnot, CIRIMAT UMR 5085, Université Paul Sabatier, Bat 3R1B2, 118 route de Narbonne, 31062 Toulouse Cedex 04, France
| | - Laura Nasarre
- Cardiovascular Research Center, CSIC-ICCC, IIB-Sant Pau, Hospital de la Santa Creu i Sant Pau, 08025 Barcelona, Spain
| | - Lina Badimon
- Cardiovascular Research Center, CSIC-ICCC, IIB-Sant Pau, Hospital de la Santa Creu i Sant Pau, 08025 Barcelona, Spain
| | - Colette Lacabanne
- Physique des Polymères, Institut Carnot, CIRIMAT UMR 5085, Université Paul Sabatier, Bat 3R1B2, 118 route de Narbonne, 31062 Toulouse Cedex 04, France
| | - Vicenta Llorente-Cortés
- Cardiovascular Research Center, CSIC-ICCC, IIB-Sant Pau, Hospital de la Santa Creu i Sant Pau, 08025 Barcelona, Spain.
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23
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Fathi A, Mithieux SM, Wei H, Chrzanowski W, Valtchev P, Weiss AS, Dehghani F. Elastin based cell-laden injectable hydrogels with tunable gelation, mechanical and biodegradation properties. Biomaterials 2014; 35:5425-35. [PMID: 24731705 DOI: 10.1016/j.biomaterials.2014.03.026] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 03/12/2014] [Indexed: 02/05/2023]
Abstract
Injectable hydrogels made from extracellular matrix proteins such as elastin show great promise for various biomedical applications. Use of cytotoxic reagents, fixed gelling behavior, and lack of mechanical strength in these hydrogels are the main associated drawbacks. The aim of this study was to develop highly cytocompatible and injectable elastin-based hydrogels with alterable gelation characteristics, favorable mechanical properties and structural stability for load bearing applications. A thermoresponsive copolymer, poly(N-isopropylacrylamide-co-polylactide-2-hydroxyethyl methacrylate-co-oligo(ethylene glycol)monomethyl ether methacrylate, was functionalized with succinimide ester groups by incorporating N-acryloxysuccinimide monomer. These ester groups were exploited to covalently bond this polymer, denoted as PNPHO, to different proteins with primary amine groups such as α-elastin in aqueous media. The incorporation of elastin through covalent bond formation with PNPHO promotes the structural stability, mechanical properties and live cell proliferation within the structure of hydrogels. Our results demonstrated that elastin-co-PNPHO solutions were injectable through fine gauge needles and converted to hydrogels in situ at 37 °C in the absence of any crosslinking reagent. By altering PNPHO content, the gelling time of these hydrogels can be finely tuned within the range of 2-15 min to ensure compatibility with surgical requirements. In addition, these hydrogels exhibited compression moduli in the range of 40-145 kPa, which are substantially higher than those of previously developed elastin-based hydrogels. These hydrogels were highly stable in the physiological environment with the evidence of 10 wt% mass loss in 30 days of incubation in a simulated environment. This class of hydrogels is in vivo bioabsorbable due to the gradual increase of the lower critical solution temperature of the copolymer to above 37 °C due to the cleavage of polylactide from the PNPHO copolymer. Moreover, our results demonstrated that more than 80% of cells encapsulated in these hydrogels remained viable, and the number of encapsulated cells increased for at least 5 days. These unique properties mark elastin-co-PNHPO hydrogels as favorable candidates for a broad range of tissue engineering applications.
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Affiliation(s)
- Ali Fathi
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, Australia
| | - Suzanne M Mithieux
- School of Molecular Bioscience, University of Sydney, Australia; Charles Perkins Centre, University of Sydney, Sydney, Australia
| | - Hua Wei
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, Australia
| | | | - Peter Valtchev
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, Australia
| | - Anthony S Weiss
- School of Molecular Bioscience, University of Sydney, Australia; Charles Perkins Centre, University of Sydney, Sydney, Australia; Bosch Institute, University of Sydney, Sydney, Australia.
| | - Fariba Dehghani
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, Australia.
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24
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Ciofani G, Genchi GG, Guardia P, Mazzolai B, Mattoli V, Bandiera A. Recombinant human elastin-like magnetic microparticles for drug delivery and targeting. Macromol Biosci 2013; 14:632-42. [PMID: 24318291 DOI: 10.1002/mabi.201300361] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 11/12/2013] [Indexed: 11/10/2022]
Abstract
Bioinspired recombinant polypeptides represent a highly promising tool in biomedical research, being protein intrinsic constituents of both cells and their natural matrices. In this regard, a very interesting model is represented by polypeptides inspired by elastin, which naturally confers rubber-like elasticity to tissues, and is able to undergo wide deformations without rupture. In this paper, a microparticle system based on a recombinant human elastin-like polypeptide (HELP) is reported for drug delivery applications. HELP microparticles are prepared through a water-in-oil emulsion of an aqueous solution of recombinant polypeptide in isoctane, followed by enzymatic cross-linking. Superparamagnetic iron oxide nanoparticles are introduced in this system with the purpose of conferring magnetic properties to the microspheres, and thus controlling their targeting and tracking as drug vectors. The obtained microparticles are characterized in terms of morphology, structure, magnetic properties, drug release, and magnetic drivability, showing interesting and promising results for further biomedical applications.
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Affiliation(s)
- Gianni Ciofani
- Istituto Italiano di Tecnologia, Center for Micro-BioRobotics @SSSA, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy
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Adrianos SL, Teulé F, Hinman MB, Jones JA, Weber WS, Yarger JL, Lewis RV. Nephila clavipes Flagelliform silk-like GGX motifs contribute to extensibility and spacer motifs contribute to strength in synthetic spider silk fibers. Biomacromolecules 2013; 14:1751-60. [PMID: 23646825 DOI: 10.1021/bm400125w] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Flagelliform spider silk is the most extensible silk fiber produced by orb weaver spiders, though not as strong as the dragline silk of the spider. The motifs found in the core of the Nephila clavipes flagelliform Flag protein are GGX, spacer, and GPGGX. Flag does not contain the polyalanine motif known to provide the strength of dragline silk. To investigate the source of flagelliform fiber strength, four recombinant proteins were produced containing variations of the three core motifs of the Nephila clavipes flagelliform Flag protein that produces this type of fiber. The as-spun fibers were processed in 80% aqueous isopropanol using a standardized process for all four fiber types, which produced improved mechanical properties. Mechanical testing of the recombinant proteins determined that the GGX motif contributes extensibility and the spacer motif contributes strength to the recombinant fibers. Recombinant protein fibers containing the spacer motif were stronger than the proteins constructed without the spacer that contained only the GGX motif or the combination of the GGX and GPGGX motifs. The mechanical and structural X-ray diffraction analysis of the recombinant fibers provide data that suggests a functional role of the spacer motif that produces tensile strength, though the spacer motif is not clearly defined structurally. These results indicate that the spacer is likely a primary contributor of strength, with the GGX motif supplying mobility to the protein network of native N. clavipes flagelliform silk fibers.
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Affiliation(s)
- Sherry L Adrianos
- Department of Molecular Biology, University of Wyoming , Laramie, Wyoming 82071, United States.
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Samouillan V, Dandurand J, Nasarre L, Badimon L, Lacabanne C, Llorente-Cortés V. Lipid loading of human vascular smooth muscle cells induces changes in tropoelastin protein levels and physical structure. Biophys J 2013; 103:532-540. [PMID: 22947869 DOI: 10.1016/j.bpj.2012.06.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Revised: 06/12/2012] [Accepted: 06/20/2012] [Indexed: 11/17/2022] Open
Abstract
Aggregated low-density lipoprotein (agLDL), one of the main LDL modifications in the arterial intima, contributes to massive intracellular cholesteryl ester (CE) accumulation in human vascular smooth muscle cells (VSMC), which are major producers of elastin in the vascular wall. Our aim was to analyze the levels, physical structure, and molecular mobility of tropoelastin produced by agLDL-loaded human VSMC (agLDL-VSMC) versus that produced by control VSMC. Western blot analysis demonstrated that agLDL reduced VSMC-tropoelastin protein levels by increasing its degradation rate. Moreover, our results demonstrated increased levels of precursor and mature forms of cathepsin S in agLDL-VSMC. Fourier transform infrared analysis revealed modifications in the secondary structures of tropoelastin produced by lipid-loaded VSMCs. Thermal and dielectric analyses showed that agLDL-VSMC tropoelastin has decreased glass transition temperatures and distinct chain dynamics that, in addition to a loss of thermal stability, lead to strong changes in its mechanical properties. In conclusion, agLDL lipid loading of human vascular cells leads to an increase in cathepsin S production concomitantly with a decrease in cellular tropoelastin protein levels and dramatic changes in secreted tropoelastin physical structure. Therefore, VSMC-lipid loading likely determines alterations in the mechanical properties of the vascular wall and plays a crucial role in elastin loss during atherosclerosis.
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Affiliation(s)
- Valerie Samouillan
- Physique des Polymères, Institut Carnot, CIRIMAT UMR 5085, Université Paul Sabatier, Tolouse, France.
| | - Jany Dandurand
- Physique des Polymères, Institut Carnot, CIRIMAT UMR 5085, Université Paul Sabatier, Tolouse, France
| | - Laura Nasarre
- Cardiovascular Research Center, CSIC-ICCC, IIB-Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Lina Badimon
- Cardiovascular Research Center, CSIC-ICCC, IIB-Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Colette Lacabanne
- Physique des Polymères, Institut Carnot, CIRIMAT UMR 5085, Université Paul Sabatier, Tolouse, France
| | - Vicenta Llorente-Cortés
- Cardiovascular Research Center, CSIC-ICCC, IIB-Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.
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Pepe A, Crudele MA, Bochicchio B. Effect of proline analogues on the conformation of elastin peptides. NEW J CHEM 2013. [DOI: 10.1039/c3nj41001c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jain R, Agarwal A, Kierski PR, Schurr MJ, Murphy CJ, McAnulty JF, Abbott NL. The use of native chemical functional groups presented by wound beds for the covalent attachment of polymeric microcarriers of bioactive factors. Biomaterials 2013; 34:340-52. [PMID: 23088838 PMCID: PMC3651840 DOI: 10.1016/j.biomaterials.2012.09.055] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Accepted: 09/23/2012] [Indexed: 12/19/2022]
Abstract
The development of versatile methods that provide spatial and temporal control over the presentation of physical and biochemical cues on wound beds can lead to new therapeutic approaches that expedite wound healing by favorably influencing cellular behaviors. Toward that goal, we report that native chemical functional groups presented by wound beds can be utilized for direct covalent attachment of polymeric microbeads. Specifically, we demonstrated the covalent attachment of maleimide-functionalized and catechol-functionalized microbeads, made of either polystyrene (non-degradable) or poly(lactic-co-glycolic acid) ((PLGA), degradable), to sulfhydryl and amine groups present on porcine dermis used here as an ex vivo model wound bed. A pronounced increase (10-70 fold) in the density and persistence of the covalently reactive microbeads was observed relative to microbeads that adsorb via non-covalent interactions. Complementary characterization of the surface chemistry of the ex vivo wound beds using Raman microspectroscopy provides support for our conclusion that the increased adherence of the maleimide-functionalized beads results from their covalent bond formation with sulfhydryl groups on the wound bed. The attachment of maleimide-functionalized microbeads to wounds created in live wild-type and diabetic mice led to observations of differential immobilization of microbeads on them and were consistent with anticipated differences in the presentation of sulfhydryl groups on the two different wound types. Finally, the incorporation of maleimide-functionalized microbeads in wounds created in wild-type mice did not impair the rate of wound closure relative to an untreated wound. Overall, the results presented in this paper enable a general and facile approach to the engineering of wound beds in which microbeads are covalently immobilized to wound beds. Such immobilized microbeads could be used in future studies to release bioactive factors (e.g., antimicrobial agents or growth factors) and/or introduce topographical cues that promote cell behaviors underlying healing and wound closure.
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Affiliation(s)
- Rishabh Jain
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison
| | - Ankit Agarwal
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison
| | - Patricia R. Kierski
- Department of Surgery, School of Veterinary Medicine, University of Wisconsin-Madison
| | - Michael J. Schurr
- Department of Surgery, School of Medicine and Public Health, University of Colorado-Denver
| | - Christopher J. Murphy
- Department of Ophthalmology & Vision Science, School of Medicine and the Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis
| | - Jonathan F. McAnulty
- Department of Surgery, School of Veterinary Medicine, University of Wisconsin-Madison
| | - Nicholas L. Abbott
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison
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Nakatsuka N, Barnaby SN, Fath KR, Banerjee IA. Fabrication of Collagen–Elastin-Bound Peptide Microtubes for Mammalian Cell Attachment. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 23:1843-62. [DOI: 10.1163/156856211x598229] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Nako Nakatsuka
- a Department of Chemistry , Fordham University , 441 East Fordham Road, Bronx, New York , NY , 10458 , USA
| | - Stacey N. Barnaby
- a Department of Chemistry , Fordham University , 441 East Fordham Road, Bronx, New York , NY , 10458 , USA
| | - Karl R. Fath
- b Department of Biology , The City University of New York, Queens College , 65-30 Kissena Boulevard, Flushing, New York , NY , 11367 , USA
| | - Ipsita A. Banerjee
- a Department of Chemistry , Fordham University , 441 East Fordham Road, Bronx, New York , NY , 10458 , USA
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Bochicchio B, Pepe A. Role of polyproline II conformation in human tropoelastin structure. Chirality 2012; 23:694-702. [PMID: 22135799 DOI: 10.1002/chir.20979] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
In this review, we present a comprehensive overview of the molecular studies on human tropoelastin domains accomplished by Tamburro and co-workers in the last decade. The used approach is the reductionist approach applied to human tropoelastin and is based on the observation that the tropoelastin gene exhibits a cassette-like organization, with a regular alternation of cross-linking and hydrophobic domains putatively responsible for the elasticity of the protein. The peculiar structure of human tropoelastin gene prompted us to study the isolated domains encoded by the exons of tropoelastin, with the perspective to get deep insights into the structural properties of the whole protein. At the molecular level, the results clearly evidence large flexibility of the polypeptide chains in the hydrophobic domains, which oscillate between rather extended and folded conformations. An important role was assigned to poly-proline II conformation considered as the hinge structure in the dynamic conformational equilibrium suggested for the hydrophobic domains. For the lysine-rich cross-linking domains, the structural studies exactly localized α-helix along the polypeptide sequence. Furthermore, at supramolecular level, these studies showed that several domains are able to self-assemble in two different aggregation patterns, the fibrous elastin-like structure for some proline-rich hydrophobic domains and the amyloid-like for some glycine-rich hydrophobic domains. Accordingly, the studies suggest that the reductionist approach was a valid tool for studying a complex protein, such as elastin, elucidating not only the structure but also the specific role played by its constituent domains.
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Affiliation(s)
- Brigida Bochicchio
- Laboratory of Protein Chemistry, Department of Chemistry A. M. Tamburro, University of Basilicata, Potenza, Italy.
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31
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Annabi N, Fathi A, Mithieux SM, Weiss AS, Dehghani F. Fabrication of porous PCL/elastin composite scaffolds for tissue engineering applications. J Supercrit Fluids 2011. [DOI: 10.1016/j.supflu.2011.06.010] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Xu C, Wang Y. Chemical composition and structure of peritubular and intertubular human dentine revisited. Arch Oral Biol 2011; 57:383-91. [PMID: 21996490 DOI: 10.1016/j.archoralbio.2011.09.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Revised: 08/17/2011] [Accepted: 09/15/2011] [Indexed: 10/16/2022]
Abstract
OBJECTIVE Currently there is still a debate about whether peritubular dentine (PTD) is non-collageneous or collageneous tissue. The chemical composition and structure of human PTD and intertubular dentine (ITD) was re-visited in this study. DESIGN The dentine tubular region including ITD and PTD prepared from human third molars was in situ detected by means of micro-Raman spectroscopy (μRs) and atomic force microscopy (AFM). RESULTS From the μRs study, it was found that the mineral/matrix ratios (phosphate vs. CH(2)) in PTD were ∼3 times of those in ITD. For the mineral, the differences between PTD and ITD were small, but still detectable. For the organic matrix, the intensity ratios of amide III to CH(2) in ITD were ∼1.5 times of those in PTD, indicating the structural differences. In addition, there was a higher proline/hydroxyproline content in ITD than that in PTD. However, the overall Raman peak contour in the amide regions (I & III) was similar, indicating collagen might still exist in both the ITD and PTD. An in situ AFM observation of the dentinal tubular region during EDTA etching confirmed that dentine collagen ran across from the ITD into the PTD. CONCLUSION A phenomenon similar to that observed in the dentine-enamel junction is proposed to explain the above results. It is demonstrated that the μRs-AFM approach can be used to provide an insight into the structure of small dental tissues at the micron or sub-micron scale.
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Affiliation(s)
- Changqi Xu
- Department of Oral Biology, University of Missouri-Kansas City, School of Dentistry, Kansas City, MO 64108, USA
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Annabi N, Fathi A, Mithieux SM, Martens P, Weiss AS, Dehghani F. The effect of elastin on chondrocyte adhesion and proliferation on poly (ɛ-caprolactone)/elastin composites. Biomaterials 2010; 32:1517-25. [PMID: 21115195 DOI: 10.1016/j.biomaterials.2010.10.024] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Accepted: 10/12/2010] [Indexed: 11/28/2022]
Abstract
The aim of this study was to demonstrate the effect of elastin on chondrocyte adhesion and proliferation within the structure of poly (ɛ-caprolactone) (PCL)/elastin composites. The homogenous 3D structure composites were constructed by using high pressure CO(2) in two stages. Porous PCL structures with average pore sizes of 540 ± 21 μm and a high degree of interconnectivity were produced using gas foaming/salt leaching. The PCL scaffolds were then impregnated with elastin and cross-linked with glutaraldehyde (GA) under high pressure CO(2). The effects of elastin and cross-linker concentrations on the characteristics of composites were investigated. Increasing the elastin concentration from 25mg/ml to 100mg/ml elevated the amount of cross-linked elastin inside the macropores of PCL. Fourier transform infrared (FTIR) analysis showed that elastin was homogeneously distributed throughout the 3D structure of all composites. The weight gain of composites increased 2-fold from 15.8 ± 0.3 to 38.3 ± 0.7 (w/w) % by increasing the elastin concentration from 25mg/ml to 50mg/ml and approached a plateau above this concentration. The presence of elastin within the pores of PCL improved the water uptake properties of PCL scaffolds; the water uptake ratio of PCL was enhanced 100-fold from 0.030 ± 0.005g liquid/g polymer to 11.80 ± 0.01g liquid/g polymer, when the elastin solution concentration was 50mg/ml. These composites exhibited lower compressive modulus and energy loss compared to pure PCL scaffolds due to their higher water content and elasticity. In vitro studies show that these composites can support primary articular cartilage chondrocyte adhesion and proliferation within the 3D structures. These results demonstrate the potential of using PCL/elastin composites for cartilage repair.
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Affiliation(s)
- Nasim Annabi
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, NSW 2006, Australia
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Rusciani A, Duca L, Sartelet H, Chatron-Colliet A, Bobichon H, Ploton D, Le Naour R, Blaise S, Martiny L, Debelle L. Elastin peptides signaling relies on neuraminidase-1-dependent lactosylceramide generation. PLoS One 2010; 5:e14010. [PMID: 21103358 PMCID: PMC2982818 DOI: 10.1371/journal.pone.0014010] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Accepted: 10/25/2010] [Indexed: 11/19/2022] Open
Abstract
The sialidase activity of neuraminidase-1 (Neu-1) is responsible for ERK 1/2 pathway activation following binding of elastin peptide on the elastin receptor complex. In this work, we demonstrate that the receptor and lipid rafts colocalize at the plasma membrane. We also show that the disruption of these microdomains as well as their depletion in glycolipids blocks the receptor signaling. Following elastin peptide treatment, the cellular GM3 level decreases while lactosylceramide (LacCer) content increases consistently with a GM3/LacCer conversion. The use of lactose or Neu-1 siRNA blocks this process suggesting that the elastin receptor complex is responsible for this lipid conversion. Flow cytometry analysis confirms this elastin peptide-driven LacCer generation. Further, the use of a monoclonal anti-GM3 blocking antibody shows that GM3 is required for signaling. In conclusion, our data strongly suggest that Neu-1-dependent GM3/LacCer conversion is the key event leading to signaling by the elastin receptor complex. As a consequence, we propose that LacCer is an early messenger for this receptor.
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Affiliation(s)
- Anthony Rusciani
- Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté des Sciences, Reims, France
| | - Laurent Duca
- Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté des Sciences, Reims, France
- * E-mail:
| | - Hervé Sartelet
- Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté des Sciences, Reims, France
| | - Aurore Chatron-Colliet
- Laboratoire Médicament, Dynamique Intracellulaire, Architecture Nucléaire (MéDIAN), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté de Pharmacie, Reims, France
| | - Hélène Bobichon
- Laboratoire Médicament, Dynamique Intracellulaire, Architecture Nucléaire (MéDIAN), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté de Pharmacie, Reims, France
| | - Dominique Ploton
- Laboratoire Médicament, Dynamique Intracellulaire, Architecture Nucléaire (MéDIAN), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté de Pharmacie, Reims, France
| | - Richard Le Naour
- Laboratoire d'Immunologie et de Microbiologie, EA 4303 Inflammation et Immunité de l'appareil respiratoire, Faculté de Pharmacie, Reims, France
| | - Sébastien Blaise
- Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté des Sciences, Reims, France
| | - Laurent Martiny
- Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté des Sciences, Reims, France
| | - Laurent Debelle
- Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté des Sciences, Reims, France
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Bandiera A, Sist P, Urbani R. Comparison of Thermal Behavior of Two Recombinantly Expressed Human Elastin-Like Polypeptides for Cell Culture Applications. Biomacromolecules 2010; 11:3256-65. [DOI: 10.1021/bm100644m] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Antonella Bandiera
- Department of Life Sciences, University of Trieste, via L. Giorgieri, 1, 34127 Trieste, Italy
| | - Paola Sist
- Department of Life Sciences, University of Trieste, via L. Giorgieri, 1, 34127 Trieste, Italy
| | - Ranieri Urbani
- Department of Life Sciences, University of Trieste, via L. Giorgieri, 1, 34127 Trieste, Italy
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Elastin-derived peptides enhance melanoma growth in vivo by upregulating the activation of Mcol-A (MMP-1) collagenase. Br J Cancer 2010; 103:1562-70. [PMID: 20959825 PMCID: PMC2990576 DOI: 10.1038/sj.bjc.6605926] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background: Elastin peptides possess several biological activities and in vitro data suggest they could be involved in the early phase of melanoma growth. Methods: Using diverse in vitro and in vivo techniques (cell proliferation, invasion and migration assays, zymography, western blots, collagen degradation assay, reverse transcription PCR, melanoma allographs and immunohistochemistry), we analysed the effect of elastin-derived peptides (EDPs) on B16F1 melanoma growth and invasion, as well as on the proteolytic systems involved. Results: We found that EDPs dramatically promote in vivo tumour development of B16F1 melanoma, as well as their in vitro migration and invasion. The inhibition of serine proteases and matrix metalloproteinases (MMPs) activities, by aprotinin and galardin, respectively, demonstrated that these enzymes were involved in these processes. However, we found that EDPs did not increase urokinase-type plasminogen activator, tissue-type plasminogen activator or MMP-2 expression and/or activation, neither in vitro nor in vivo. Nevertheless, we observed a strong increase of pro-MMP-9 secretion in EDPs-treated tumours and, more importantly, an increase in the expression and activation of the murine counterpart of MMP-1, named murine collagenase-A (Mcol-A). Moreover, we show that plasminogen system inhibition decreases collagen degradation by this enzyme. Finally, the use of a specific blocking antibody against Mcol-A abolished EDP-induced B16F1 invasion in vitro, showing that this MMP was directly involved in this process. Conclusion: Our data show that in vivo, EDPs are involved in melanoma growth and invasion and reinforced the concept of elastin fragmentation as a predictive factor.
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Muiznieks LD, Weiss AS, Keeley FW. Structural disorder and dynamics of elastin. Biochem Cell Biol 2010; 88:239-50. [PMID: 20453927 DOI: 10.1139/o09-161] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Elastin is a self-assembling, extracellular-matrix protein that is the major provider of tissue elasticity. Here we review structural studies of elastin from over four decades, and draw together evidence for solution flexibility and conformational disorder that is inherent in all levels of structural organization. The characterization of disorder is consistent with an entropy-driven mechanism of elastic recoil. We conclude that conformational disorder is a constitutive feature of elastin structure and function.
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Affiliation(s)
- Lisa D Muiznieks
- Research Institute, Hospital for Sick Children, 555 University Ave., Toronto, ON M5G 1X8, Canada.
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38
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Popescu MC, Vasile C, Craciunescu O. Structural analysis of some soluble elastins by means of FT-IR and 2D IR correlation spectroscopy. Biopolymers 2010; 93:1072-84. [DOI: 10.1002/bip.21524] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Tintar D, Samouillan V, Dandurand J, Lacabanne C, Pepe A, Bochicchio B, Tamburro AM. Human tropoelastin sequence: dynamics of polypeptide coded by exon 6 in solution. Biopolymers 2009; 91:943-52. [PMID: 19603496 DOI: 10.1002/bip.21282] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Calorimetric studies were performed on exon 6 in powdered form and in solution [water and 2,2,2-trifluoroethanol (TFE), a structure-inducing solvent or cosolvent]. Dynamic dielectric spectroscopy (DDS) analyses were realized in water and 20% TFE. The major role of solvent-peptide organization is evidenced with these techniques. Calorimetric measurements reveal the structural water organization around the polypeptide as well as the presence of hydrophobic interactions in TFE solution. Dielectric measurements showed for exon 6/water a decrease of relaxations times of bulk solvent implying a faster dynamics with a slight increase of the activation entropy, suggesting that exon 6 probably creates disorder within the solvent. For TFE/water mixtures, an influence of exon 6 on its environment was seen with a relaxation associated with the exon 6/solvent interactions reinforced by storage of 72 h. Finally, exon 6/solvent interactions were clearly observed with addition of TFE.
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Affiliation(s)
- D Tintar
- Laboratoire de Physique des Polymères, CIRIMAT UMR 5085, Institut Carnot, Université Paul Sabatier, Toulouse, France
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Wise SG, Mithieux SM, Weiss AS. Engineered tropoelastin and elastin-based biomaterials. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2009; 78:1-24. [PMID: 20663482 DOI: 10.1016/s1876-1623(08)78001-5] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Elastin is a key mammalian extracellular matrix protein that is critical to the elasticity, compliance, and resilience of a range of tissues including the vasculature, skin, and lung. In addition to providing mechanical integrity to tissues, elastin also has critical functions in the regulation of cell behavior and may help to modulate the coagulation cascade. The high insolubility of elastin has limited its use to researchers, while soluble derivatives of elastin including elastin peptides, digested elastins, and tropoelastin have much broader applications. Recombinantly produced tropoelastin, the soluble monomer of elastin, has been shown to exhibit many of the properties intrinsic to the mature biopolymer. As such, recombinant human tropoelastin provides a versatile building block for the manufacture of biomaterials with potential for diverse applications in elastic tissues. One of the major benefits of soluble elastins is that they can be engineered into a range of physical forms. As a dominant example, soluble elastins including tropoelastin can form hydrogels when they are chemically cross-linked. These self-organized constructs swell when transferred from a saline to aqueous environment and are highly elastic; these tunable responses are dependent on the types of cross-linker and elastin used. Soluble elastins can also be drawn into fine fibers using electrospinning. The morphology of these fibers can be altered by modifying spinning parameters that include delivery flow rate and the starting protein concentration. The resulting fibers then accumulate to form porous scaffolds, and can be wound around mandrils to create conduits for vascular applications. Electrospun scaffolds retain the elasticity and cell-interactive properties inherent in the tropoelastin precursor. Additionally, soluble elastins serve as versatile biomaterial coatings, enhancing cellular interactions and modulating the blood compatibility of polymer- and metal-based prostheses. Soluble elastins, and in particular tropoelastin, have highly favorable intrinsic physical and cell-interactive properties, warranting their adaption through incorporation into biomaterials and modification of implantable devices. The multiple choices of ways to produce elastin-based biomaterials mean that they are well suited to the tailoring of elastic biomaterials and hybrid constructs.
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Affiliation(s)
- Steven G Wise
- School of Molecular and Microbial Biosciences, University of Sydney, Sydney, NSW 2006, Australia
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Cho Y, Sagle LB, Iimura S, Zhang Y, Kherb J, Chilkoti A, Scholtz JM, Cremer PS. Hydrogen Bonding of β-Turn Structure Is Stabilized in D2O. J Am Chem Soc 2009; 131:15188-93. [DOI: 10.1021/ja9040785] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Younhee Cho
- Department of Chemistry, Texas A&M University, 3255 TAMU, and Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas 77843, and Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708
| | - Laura B. Sagle
- Department of Chemistry, Texas A&M University, 3255 TAMU, and Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas 77843, and Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708
| | - Satoshi Iimura
- Department of Chemistry, Texas A&M University, 3255 TAMU, and Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas 77843, and Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708
| | - Yanjie Zhang
- Department of Chemistry, Texas A&M University, 3255 TAMU, and Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas 77843, and Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708
| | - Jaibir Kherb
- Department of Chemistry, Texas A&M University, 3255 TAMU, and Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas 77843, and Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708
| | - Ashutosh Chilkoti
- Department of Chemistry, Texas A&M University, 3255 TAMU, and Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas 77843, and Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708
| | - J. Martin Scholtz
- Department of Chemistry, Texas A&M University, 3255 TAMU, and Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas 77843, and Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708
| | - Paul S. Cremer
- Department of Chemistry, Texas A&M University, 3255 TAMU, and Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas 77843, and Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708
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42
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Teng W, Cappello J, Wu X. Recombinant Silk-Elastinlike Protein Polymer Displays Elasticity Comparable to Elastin. Biomacromolecules 2009; 10:3028-36. [DOI: 10.1021/bm900651g] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Weibing Teng
- Department of Aerospace and Mechanical Engineering, Biomedical Engineering IDP and Bio5 Institute, University of Arizona, Tucson, Arizona 85721, and Protein Polymer Technologies, Inc., San Diego, California 92121
| | - Joseph Cappello
- Department of Aerospace and Mechanical Engineering, Biomedical Engineering IDP and Bio5 Institute, University of Arizona, Tucson, Arizona 85721, and Protein Polymer Technologies, Inc., San Diego, California 92121
| | - Xiaoyi Wu
- Department of Aerospace and Mechanical Engineering, Biomedical Engineering IDP and Bio5 Institute, University of Arizona, Tucson, Arizona 85721, and Protein Polymer Technologies, Inc., San Diego, California 92121
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43
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Garcia Y, Hemantkumar N, Collighan R, Griffin M, Rodriguez-Cabello JC, Pandit A. In vitro characterization of a collagen scaffold enzymatically cross-linked with a tailored elastin-like polymer. Tissue Eng Part A 2009; 15:887-99. [PMID: 18976154 DOI: 10.1089/ten.tea.2008.0104] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Collagen, the main structural component of the extracellular matrix (ECM), provides tensile stiffness to different structures and organs against rupture. However, collagen tissue-engineered implants are hereto still lacking in mechanical strength. Attempts to create stiffer scaffolds have resulted in increased brittleness of the material, reducing the versatility of the original component. The hypothesis behind this research is that the introduction of an elastic element in the scaffold will enhance the mechanical properties of the collagen-based scaffolds, as elastin does in the ECM to prevent irreversible deformation. In this study, an elastin-like polymer (ELP) designed and synthesized using recombinant DNA methodology is used with the view to providing increased proteolytic resistance and increased functionality to the scaffolds by carrying specific sequences for microbial transglutaminase cross-linking, endothelial cell adhesion, and drug delivery. Evaluation of the effects that cross-linking ELP-collagen has on the physicochemical properties of the scaffold such as porosity, presence of cross-linking, thermal behavior, and mechanical strength demonstrated that the introduction of enzymatically resistant covalent bonds between collagen and ELP increases the mechanical strength of the scaffolds in a dose-dependent manner without significantly affecting the porosity or thermal properties of the original scaffold. Importantly, the scaffolds also showed selective behavior, in a dose (ELP)-dependent manner toward human umbilical vein endothelial cells and smooth muscle cells when compared to fibroblasts.
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Affiliation(s)
- Yolanda Garcia
- Department of Anatomy, National University of Ireland Galway, Galway, Ireland.
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44
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Tamburro AM. A never-ending love story with elastin: a scientific autobiography. Nanomedicine (Lond) 2009; 4:469-87. [PMID: 19505248 DOI: 10.2217/nnm.09.18] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The author describes, in a quite unconventional way, the most important results achieved in the last 50 years in the field of elastin structure–elasticity relationships, beginning with the first invaluable findings of Partridge on desmosines and isodesmosines until the most recent theories on elastomeric proteins. The author also relates a scientific autobiography characterized by his greatest passion, elastin.
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Affiliation(s)
- Antonio M Tamburro
- University of Basilicata, Department of Chemistry, Via N. Sauro 85, 85100 Potenza, Italy
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45
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Andrew Chan KL, Zhang G, Tomic-Canic M, Stojadinovic O, Lee B, Flach CR, Mendelsohn R. A coordinated approach to cutaneous wound healing: vibrational microscopy and molecular biology. J Cell Mol Med 2009; 12:2145-54. [PMID: 19145704 PMCID: PMC4506178 DOI: 10.1111/j.1582-4934.2008.00459.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The repair of cutaneous wounds in the adult body involves a complex series of spatially and temporally organized processes to prevent infection and restore homeostasis. Three characteristic phases of wound repair (inflammation, proliferation including re-epithelialization and remodelling) overlap in time and space. We have utilized a human skin wound-healing model to correlate changes in genotype and pheno-type with infrared (IR) and confocal Raman spectroscopic images during the re-epithelialization of excisional wounds. The experimental protocols validated as IR images clearly delineate the keratin-rich migrating epithelial tongue from the collagen-rich wound bed. Multivariate statistical analysis of IR datasets acquired 6 days post-wounding reveal subtle spectral differences that map to distinct spatial distributions, which are correlated with immunofluorescent staining patterns of different keratin types. Images computed within collagen-rich regions expose complementary spatial patterns and identify elastin in the wound bed. The temporal sequence of events is explored through a comparison of gene array analysis with confocal Raman microscopy. Our approach demonstrates the feasibility of acquiring detailed molecular structure information from the various proteins and their subclasses involved in the wound-healing process.
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Affiliation(s)
- K L Andrew Chan
- Department of Chemical Engineering, Imperial College London, London, SW72AZ, UK
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46
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Green E, Ellis R, Winlove P. The molecular structure and physical properties of elastin fibers as revealed by Raman microspectroscopy. Biopolymers 2008; 89:931-40. [DOI: 10.1002/bip.21037] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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47
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Bonnier F, Rubin S, Debelle L, Ventéo L, Pluot M, Baehrel B, Manfait M, Sockalingum GD. FTIR protein secondary structure analysis of human ascending aortic tissues. JOURNAL OF BIOPHOTONICS 2008; 1:204-214. [PMID: 19412970 DOI: 10.1002/jbio.200810020] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The advent of moderate dilatations in ascending aortas is often accompanied by structural modifications of the main components of the aortic tissue, elastin and collagen. In this study, we have undertaken an approach based on FTIR microscopy coupled to a curve-fitting procedure to analyze secondary structure modifications in these proteins in human normal and pathological aortic tissues. We found that the outcome of the aortic pathology is strongly influenced by these proteins, which are abundant in the media of the aortic wall, and that the advent of an aortic dilatation is generally accompanied by a decrease of parallel beta-sheet structures. Elastin, essentially composed of beta-sheet structures, seems to be directly related to these changes and therefore indicative of the elastic alteration of the aortic wall. Conventional microscopy and confocal fluorescence microscopy were used to compare FTIR microscopy results with the organization of the elastic fibers present in the tissues. This in-vitro study on 6 patients (three normal and three pathologic), suggests that such a spectroscopic marker, specific to aneurismal tissue characterization, could be important information for surgeons who face the dilemma of moderate aortic tissue dilatation of the ascending aortas.
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Affiliation(s)
- Franck Bonnier
- Unité MéDIAN, Université de Reims Champagne-Ardenne, CNRS UMR 6142, UFR de Pharmacie, IFR 53, 51 rue Cognacq-Jay, 51096 Reims cedex, France
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48
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Wang HW, Le TT, Cheng JX. Label-free Imaging of Arterial Cells and Extracellular Matrix Using a Multimodal CARS Microscope. OPTICS COMMUNICATIONS 2008; 281:1813-1822. [PMID: 19343073 PMCID: PMC2350222 DOI: 10.1016/j.optcom.2007.07.067] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
A multimodal nonlinear optical imaging system that integrates coherent anti-Stokes Raman scattering (CARS), sum-frequency generation (SFG), and two-photon excitation fluorescence (TPEF) on the same platform was developed and applied to visualize single cells and extracellular matrix in fresh carotid arteries. CARS signals arising from CH(2)-rich membranes allowed visualization of endothelial cells and smooth muscle cells of the arterial wall. Additionally, CARS microscopy allowed vibrational imaging of elastin and collagen fibrils which are also rich in CH(2) bonds. The extracellular matrix organization were further confirmed by TPEF signals arising from elastin's autofluorescence and SFG signals arising from collagen fibrils' non-centrosymmetric structure. Label-free imaging of significant components of arterial tissues suggests the potential application of multimodal nonlinear optical microscopy to monitor onset and progression of arterial diseases.
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Affiliation(s)
- Han-Wei Wang
- Weldon School of Biomedical Engineering, West Lafayette, IN 47907
| | - Thuc T. Le
- Weldon School of Biomedical Engineering, West Lafayette, IN 47907
| | - Ji-Xin Cheng
- Weldon School of Biomedical Engineering, West Lafayette, IN 47907
- Department of Chemistry, Purdue University, West Lafayette, IN 47907
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49
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Rubin S, Bonnier F, Sandt C, Ventéo L, Pluot M, Baehrel B, Manfait M, Sockalingum GD. Analysis of structural changes in normal and aneurismal human aortic tissues using FTIR microscopy. Biopolymers 2008; 89:160-9. [PMID: 17985368 DOI: 10.1002/bip.20882] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Aortic aneurisms are frequently asymptomatic but can induce dramatic complications. The diagnosis is only based on the aortic diameter and not on a structural and compositional basis. In this preliminary study, we propose infrared microspectroscopy to nondestructively probe normal and aneurismal human aortas. Spectra from 19 human ascending aortic biopsies (10 normal and 9 aneurismal) were acquired using infrared microspectroscopy. A 1500 x 150 microm(2) area of each 7-microm thick cryosection was investigated using a 30-microm spatial resolution with a total of about 200 spectra per sample. Spectral differences between normal and aneurismal tissues were mainly located in spectral regions related to proteins, such as elastin and collagen, and proteoglycans (1750-1000 cm(-1)). Tissue heterogeneity and sample classification have been evaluated using hierarchical cluster analysis of individual or mean spectra and their second derivative. Using spectral range related to proteins, 100% of good classification was obtained whereas the proteoglycan spectral range was less discriminant. This in vitro study demonstrates the potential of such technique to differentiate between normal and aneurismal aortas using selected spectral ranges. Future investigations will be focused on these specific spectral regions to determine the role of elastin and collagen in the discrimination of normal and pathological aortas.
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Affiliation(s)
- S Rubin
- Unité MéDIAN, Université de Reims Champagne-Ardenne, CNRS UMR 6142, UFR de Pharmacie,51 rue Cognacq-Jay, 51096 Reims cedex, France
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50
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Dehghani F, Annabi N, Valtchev P, Mithieux SM, Weiss AS, Kazarian SG, Tay FH. Effect of Dense Gas CO2 on the Coacervation of Elastin. Biomacromolecules 2008; 9:1100-5. [DOI: 10.1021/bm700891b] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fariba Dehghani
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales 2006, Australia, School of Molecular and Microbial Biosciences, University of Sydney, Sydney, New South Wales 2006, Australia, and Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Nasim Annabi
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales 2006, Australia, School of Molecular and Microbial Biosciences, University of Sydney, Sydney, New South Wales 2006, Australia, and Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Peter Valtchev
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales 2006, Australia, School of Molecular and Microbial Biosciences, University of Sydney, Sydney, New South Wales 2006, Australia, and Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Suzanne M. Mithieux
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales 2006, Australia, School of Molecular and Microbial Biosciences, University of Sydney, Sydney, New South Wales 2006, Australia, and Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Anthony S. Weiss
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales 2006, Australia, School of Molecular and Microbial Biosciences, University of Sydney, Sydney, New South Wales 2006, Australia, and Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Sergei G. Kazarian
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales 2006, Australia, School of Molecular and Microbial Biosciences, University of Sydney, Sydney, New South Wales 2006, Australia, and Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
| | - Feng H. Tay
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales 2006, Australia, School of Molecular and Microbial Biosciences, University of Sydney, Sydney, New South Wales 2006, Australia, and Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
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