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Nguyen H, Huynh K, Stoldt VR. Shear-dependent fibrillogenesis of fibronectin: Impact of platelet integrins and actin cytoskeleton. Biochem Biophys Res Commun 2018; 497:797-803. [PMID: 29470988 DOI: 10.1016/j.bbrc.2018.02.158] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 02/18/2018] [Indexed: 11/26/2022]
Abstract
Soluble plasma fibronectin (Fn) with its inactive compact structure requires unfolding to assemble into active fibrils, which play a role in hemostasis and thrombosis. Fn fibril assembly involves Fn binding to cell receptors, biomechanical coupling of Fn to the cytoskeleton by integrins, exposure of self-assembly sites via contractile cell forces, and elongation of fibrils by Fn polymerization. In this report, we investigated the effect of platelet integrins and actin cytoskeleton on conformational changes of Fn induced by shear. Plasma Fn, in the presence or absence of washed platelets, was exposed to dynamic shear simulating venous or arterial flow conditions. Platelet integrins (αIIbβ3, αvβ3, and α5β1) were blocked by inhibitory antibodies to determine their contribution to shear-induced Fn fibrillogenesis. To examine the role of platelet cytoskeleton in Fn fibrillogenesis induced by shear, platelets were preincubated with cytoskeleton drugs, i. e jasplakinolide to stabilize actin or cytochalasin D to inhibit actin polymerization. Microscopic analyses demonstrated that flow and resulting shear stress over a broad range of physiological and pathological rates (50-5000 s-1) could induce conformational changes of plasma Fn. In addition, the formation of Fn fibrils is modulated by platelet integrins. In this respect, β3 integrins play a dominant role in terms of Fn fibrillogenesis induced by shear. Disruption of the actin polymerization markedly diminished Fn unfolding and assembly. These observations lead to the conclusion that Fn-integrin β3-cytoskeleton interaction is crucial for the assembly of plasma Fn matrix under flow conditions.
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Affiliation(s)
- Huong Nguyen
- Blood Research Institute, Blood Center of Wisconsin, Milwaukee, WI, USA
| | - Khon Huynh
- Biomedical Engineering Department, International University, Vietnam National University, Ho Chi Minh City, Vietnam.
| | - Volker R Stoldt
- Department of General, Visceral and Pediatric Surgery, University Hospital and Medical Faculty of the Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
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Biao MN, Chen YM, Xiong SB, Wu BY, Yang BC. Synergistic effects of fibronectin and bone morphogenetic protein on the bioactivity of titanium metal. J Biomed Mater Res A 2017; 105:2485-2498. [PMID: 28498566 DOI: 10.1002/jbm.a.36106] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/30/2017] [Accepted: 05/05/2017] [Indexed: 01/06/2023]
Abstract
To improve the biological properties of bioactive titanium metal, recombinant human bone morphogenetic protein 2(rhBMP-2) and fibronectin (Fn) were adsorbed on its surface solely or contiguously to modify the anodic oxidized titanium (AO-Ti), acid-alkali-treated titanium (AA-Ti), and polished titanium (P-Ti). It is found that the different bioactive titanium surface structures had great influence on protein adsorption. The adsorption amounts of BMP adsorbed solely and Fn/BMP adsorbed contiguously were AA-Ti > P-Ti > AO-Ti, and that for Fn adsorbed solely was AA-Ti ≈ P-Ti > AO-Ti. The conformation of proteins was changed remarkably after the adsorption. For BMP, the α-helix decreased on AA-Ti and stabilized on P-Ti and AO-Ti. For Fn, the β-sheet on PT-Ti and AA-Ti increased significantly. For Fn/BMP, the percentage of β-sheet on AA-Ti increased, and that of α-helix on all samples was stable. MSCs showed greater adhesion and spreading on Fn/BMP groups. MTT and Elisa tests showed that the synergistic effects of proteins made the cells proliferate and differentiate faster. It indicated both the surface structure and the synergistic effects of proteins could influence the biological properties of titanium metals. It provides research foundation for improving the biological properties of bioactive titanium metals by simultaneous application of several proteins. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 2485-2498, 2017.
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Affiliation(s)
- M N Biao
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610064, China
- National Engineering Research Center for Biomaterials, Chengdu, Sichuan, 610064, China
- Sichuan Guojia Biomaterials Co., Ltd, Chengdu, Sichuan, 610064, China
| | - Y M Chen
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610064, China
- National Engineering Research Center for Biomaterials, Chengdu, Sichuan, 610064, China
- Sichuan Guojia Biomaterials Co., Ltd, Chengdu, Sichuan, 610064, China
| | - S B Xiong
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610064, China
- National Engineering Research Center for Biomaterials, Chengdu, Sichuan, 610064, China
- Sichuan Guojia Biomaterials Co., Ltd, Chengdu, Sichuan, 610064, China
| | - B Y Wu
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610064, China
- National Engineering Research Center for Biomaterials, Chengdu, Sichuan, 610064, China
- Sichuan Guojia Biomaterials Co., Ltd, Chengdu, Sichuan, 610064, China
| | - B C Yang
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610064, China
- National Engineering Research Center for Biomaterials, Chengdu, Sichuan, 610064, China
- Sichuan Guojia Biomaterials Co., Ltd, Chengdu, Sichuan, 610064, China
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3
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Assmann A, Struß M, Schiffer F, Heidelberg F, Munakata H, Timchenko EV, Timchenko PE, Kaufmann T, Huynh K, Sugimura Y, Leidl Q, Pinto A, Stoldt VR, Lichtenberg A, Akhyari P. Improvement of the in vivo
cellular repopulation of decellularized cardiovascular tissues by a detergent-free, non-proteolytic, actin-disassembling regimen. J Tissue Eng Regen Med 2017; 11:3530-3543. [DOI: 10.1002/term.2271] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 07/13/2016] [Accepted: 07/19/2016] [Indexed: 01/09/2023]
Affiliation(s)
- Alexander Assmann
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery; Heinrich Heine University, Medical Faculty; Duesseldorf Germany
| | - Marc Struß
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery; Heinrich Heine University, Medical Faculty; Duesseldorf Germany
| | - Franziska Schiffer
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery; Heinrich Heine University, Medical Faculty; Duesseldorf Germany
| | - Friederike Heidelberg
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery; Heinrich Heine University, Medical Faculty; Duesseldorf Germany
| | - Hiroshi Munakata
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery; Heinrich Heine University, Medical Faculty; Duesseldorf Germany
| | - Elena V. Timchenko
- Department of Laser and Biotechnical Systems; Samara State Aerospace University; Samara Russia
| | - Pavel E. Timchenko
- Department of Laser and Biotechnical Systems; Samara State Aerospace University; Samara Russia
| | - Tim Kaufmann
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Helmholtz Institute; RWTH Aachen University; Aachen Germany
| | - Khon Huynh
- Institute of Haemostaseology, Haemotherapy and Transfusion Medicine; Heinrich Heine University, Medical Faculty; Duesseldorf Germany
| | - Yukiharu Sugimura
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery; Heinrich Heine University, Medical Faculty; Duesseldorf Germany
| | - Quentin Leidl
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery; Heinrich Heine University, Medical Faculty; Duesseldorf Germany
| | - Antonio Pinto
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery; Heinrich Heine University, Medical Faculty; Duesseldorf Germany
| | - Volker R. Stoldt
- Institute of Haemostaseology, Haemotherapy and Transfusion Medicine; Heinrich Heine University, Medical Faculty; Duesseldorf Germany
| | - Artur Lichtenberg
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery; Heinrich Heine University, Medical Faculty; Duesseldorf Germany
| | - Payam Akhyari
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery; Heinrich Heine University, Medical Faculty; Duesseldorf Germany
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