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Yang L, Han L, Liu Q, Xu Y, Jia L. Galloyl groups-regulated fibrinogen conformation: Understanding antiplatelet adhesion on tannic acid coating. Acta Biomater 2017; 64:187-199. [PMID: 28958718 DOI: 10.1016/j.actbio.2017.09.034] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 09/01/2017] [Accepted: 09/25/2017] [Indexed: 12/20/2022]
Abstract
Fibrinogen (Fgn) has been identified as the key protein in the process of biomaterial-induced platelet adhesion. We have recently reported a facile and effective method for constructing platelet-repellent surface using a natural polyphenol component tannic acid (TA). However, the mechanism by which the TA surface repels platelets was not fully understood. To address this issue, we investigated the adsorption of Fgn (amount and conformation) on four TA-functionalized surfaces with different amounts of galloyl groups and the potential for platelet adherence on these surfaces. The experimental results indicated that the four TA-functionalized surfaces adsorbed a similar amount of Fgn, but the conformation and bioactivity of the adsorbed Fgn and the subsequent platelet adherence were quite different among the surfaces. The TA surface with the most galloyl groups induced minimal changes in the conformation of Fgn, a result of the α and γ chains of the adsorbed Fgn being highly inactive on the surface, thus leading to an outstanding antiplatelet adhesion performance. With a decreased amount of galloyl groups, the activity of the α chain in the adsorbed Fgn remained unchanged, but the activity of the γ chain and the extent of platelet adhesion gradually increased. This work provided a new concept for controlling platelet adhesion on solid materials, and we envision that the TA film could have potential applications in the development of new blood-contacting biomaterials in the future. STATEMENT OF SIGNIFICANCE Reducing platelet adhesion on material surfaces is of tremendous scientific interest in the field of blood-contacting biomaterials, but it remains a big challenge due to the highly adhesive nature of the platelets. In this study, we demonstrated for the first time that tannic acid surface with abundant galloyl groups could induce minimal conformational changes of fibrinogen, eventually leading to an outstanding antiplatelet adhesion effect. In addition, the platelet adhesion response could be easily controlled through regulating the amount of galloyl groups on the surface. This work provided a new strategy for controlling platelet adhesion on solid materials, which was totally different from existing methods such as construction of physically patterned surfaces, modification of inert hydrophilic polymers or appending bioactive moieties to target surfaces.
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Bonechi C, Lamponi S, Donati A, Tamasi G, Consumi M, Leone G, Rossi C, Magnani A. Effect of resveratrol on platelet aggregation by fibrinogen protection. Biophys Chem 2017; 222:41-48. [PMID: 28095333 DOI: 10.1016/j.bpc.2016.12.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 12/21/2016] [Accepted: 12/24/2016] [Indexed: 11/28/2022]
Abstract
The effect of resveratrol (RSV) in inhibiting platelet adhesion and aggregation, as well as fibrinogen (FBG) conformational changes promoted by epinephrine (EP), were studied, by using complementary experimental techniques. NMR and IR spectroscopies were used to investigate possible protective effects by RSV towards FBG, in presence of EP. The protective effect of RSV towards FBG was highlighted by spin nuclear relaxation experiments that were interpreted for determining the thermodynamic equilibrium constants of FBG-EP interaction, and by infrared measurements, that showed EP-induced conformational changes of FBG. The ability of RSV in inhibiting platelet adhesion and aggregation promoted by EP was evaluated by scanning electron microscopy (SEM), measuring the platelet adhesion and aggregation degree, in comparison to data obtained for platelet aggregation in platelet rich plasma (PRP). The experimental combined approach pointed out that RSV is able to protect both FBG and platelets from the denaturant and aggregating action of EP at stress level concentration.
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Affiliation(s)
- Claudia Bonechi
- Department of Biotechnologies, Chemistry, and Pharmacy, Via Aldo Moro 2, 53100 Siena, Italy; CSGI-Research Center for Colloids and Nanoscience, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy.
| | - Stefania Lamponi
- Department of Biotechnologies, Chemistry, and Pharmacy, Via Aldo Moro 2, 53100 Siena, Italy; INSTM-National Interuniversity Consortium of Materials Science and Technology, Via G. Giusti 9, 50121 Firenze, Italy
| | - Alessandro Donati
- Department of Biotechnologies, Chemistry, and Pharmacy, Via Aldo Moro 2, 53100 Siena, Italy; CSGI-Research Center for Colloids and Nanoscience, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy
| | - Gabriella Tamasi
- Department of Biotechnologies, Chemistry, and Pharmacy, Via Aldo Moro 2, 53100 Siena, Italy; CSGI-Research Center for Colloids and Nanoscience, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy
| | - Marco Consumi
- Department of Biotechnologies, Chemistry, and Pharmacy, Via Aldo Moro 2, 53100 Siena, Italy; INSTM-National Interuniversity Consortium of Materials Science and Technology, Via G. Giusti 9, 50121 Firenze, Italy
| | - Gemma Leone
- Department of Biotechnologies, Chemistry, and Pharmacy, Via Aldo Moro 2, 53100 Siena, Italy; INSTM-National Interuniversity Consortium of Materials Science and Technology, Via G. Giusti 9, 50121 Firenze, Italy
| | - Claudio Rossi
- Department of Biotechnologies, Chemistry, and Pharmacy, Via Aldo Moro 2, 53100 Siena, Italy; CSGI-Research Center for Colloids and Nanoscience, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy
| | - Agnese Magnani
- Department of Biotechnologies, Chemistry, and Pharmacy, Via Aldo Moro 2, 53100 Siena, Italy; INSTM-National Interuniversity Consortium of Materials Science and Technology, Via G. Giusti 9, 50121 Firenze, Italy
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Jhong JF, Venault A, Liu L, Zheng J, Chen SH, Higuchi A, Huang J, Chang Y. Introducing mixed-charge copolymers as wound dressing biomaterials. ACS APPLIED MATERIALS & INTERFACES 2014; 6:9858-9870. [PMID: 24881869 DOI: 10.1021/am502382n] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Herein, a pseudozwitterionic structure bearing moieties with mixed positive and negative charges is introduced to develop a potential biomaterial for wound dressing applications. New mixed-charge matrices were prepared by copolymerization of the negatively charged 3-sulfopropyl methacrylate (SA) and positively charged [2-(methacryloyloxy)ethyl] trimethylammonium (TMA) onto expanded polytetrafluoroethylene (ePTFE) membranes. The charge balance was effectively regulated through the control of the initial SA/TMA ratio. The focus was then laid on the assessment of a variety of essential properties of efficient wound dressings including, hydration property, resistance to fibrinogen adsorption, hemocompatibility, as well as resistance to fibroblast attachment and bacteria colonization. It was found that the pseudozwitterionic membranes, compared to those with charge bias in the poly(SA-co-TMA) structure, exhibited the best combination of major properties. Therefore, they were further tested for wound healing. Histological examination of mouse wound treated with the pseudozwitterionic membranes exhibited complete re-epithelialization and total formation of new connective tissues after 14 days, even leading to faster healing than using commercial dressing. Results presented in this work suggest that the mixed-charge copolymers with a perfect balance of positive and negative moieties represent the newest generation of biomaterials for wound dressings.
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Affiliation(s)
- Jheng-Fong Jhong
- Department of Chemical Engineering and ‡R&D Center for Membrane Technology, Chung Yuan Christian University , 200 Chung Pei Road, Chung-Li City 32023, Taiwan
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Liu P, Chen Q, Li L, Lin S, Shen J. Anti-biofouling ability and cytocompatibility of the zwitterionic brushes-modified cellulose membrane. J Mater Chem B 2014; 2:7222-7231. [DOI: 10.1039/c4tb01151a] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Facile surface modification of silicone rubber with zwitterionic polymers for improving blood compatibility. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3865-74. [DOI: 10.1016/j.msec.2013.05.025] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 04/04/2013] [Accepted: 05/10/2013] [Indexed: 11/17/2022]
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Moussouttas M, Bhatnager M, Huynh TT, Lai EW, Khoury J, Dombrowski K, DeCaro M, Pacak K. Association between sympathetic response, neurogenic cardiomyopathy, and venous thromboembolization in patients with primary subarachnoid hemorrhage. Acta Neurochir (Wien) 2013; 155:1501-10. [PMID: 23636336 DOI: 10.1007/s00701-013-1725-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Accepted: 04/12/2013] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Sympathetic activation promotes hemostasis, and subarachnoid hemorrhage (SAH) is associated with pronounced sympathetic activation. This investigation will assess whether catecholaminergic activity relates to venous thrombotic events in patients with acute SAH. METHODS Observational study of consecutive SAH grade 3-5 patients requiring ventriculostomy insertion who did not undergo open surgical treatment of cerebral aneurysm. Cerebrospinal fluid (CSF) samples were obtained within 48 h of hemorrhage for assay of catecholamines, which were related to occurrence of deep venous thrombosis (DVT) and pulmonary embolization (PE). RESULTS Of the 92 subjects, mean age was 57 years, 76% were female, and 57% Caucasian; 11% experienced lower extremity (LE) DVT, 12% developed upper extremity (UE) or LE DVT, and 23% developed any DVT/PE. Mean time to occurrence of UE/LE DVT was 7.8 days (+/-5.9 days), and mean time to development of PE was 8.8 days (+/-5.4 days). In hazards analysis models, independent predictors of LE DVT included neurogenic cardiomyopathy (NC) [HR 4.97 (95%CI 1.32-18.7)], norepinephrine/3,4-dihydroxyphenylglycol ratio (NE/DHPG) [3.81 (2.04-7.14)], NE [5.91 (2.14-16.3)], and dopamine (DA) [2.27 (1.38-3.72)]. Predictors of UE/LE DVT included NC [5.78 (1.70-19.7)], cerebral infarction [4.01 (1.18-13.7)], NE [3.58 (1.40-9.19)], NE/DHPG [3.38 (1.80-6.33)] and DA [2.01 (1.20-3.35)]. Predictors of DVT/PE included Hunt-Hess grade (H/H) [3.02 (1.19-7.66)], NE [2.56 (1.23-5.37)] and 3,4-dihydroxyphenylalanine (DOPA) [3.49 (1.01-12.0)]. CONCLUSIONS In severe SAH, central sympathetic activity and clinical manifestations of (nor)adrenergic activity relate to the development of venous thromboemboli. Catecholamine activation may promote hemostasis, or may represent a biomarker for venous thromboses.
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Affiliation(s)
- Michael Moussouttas
- Neurocritical Care Division, Capital Institute for Neuroscience, Capital Regional Medical Center, 750 Brunswick Avenue, Trenton, NJ 08638, USA.
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Love RJ, Jones KS. The recognition of biomaterials: pattern recognition of medical polymers and their adsorbed biomolecules. J Biomed Mater Res A 2013; 101:2740-52. [PMID: 23613455 DOI: 10.1002/jbm.a.34577] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 01/04/2013] [Indexed: 12/31/2022]
Abstract
All biomedical materials are recognized as foreign entities by the host immune system despite the substantial range of different materials that have been developed by material scientists and engineers. Hydrophobic biomaterials, hydrogels, biomaterials with low protein binding surfaces, and those that readily adsorb a protein layer all seem to incite similar host responses in vivo that may differ in magnitude, but ultimately result in encapsulation by fibrotic tissue. The recognition of medical materials by the host is explained by the very intricate pattern recognition system made up of integrins, toll-like receptors, scavenger receptors, and other surface proteins that enable leukocytes to perceive almost any foreign body. In this review, we describe the various pattern recognition receptors and processes that occur on biomedical material surfaces that permit detection of a range of materials within the host.
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Affiliation(s)
- Ryan J Love
- School of Biomedical Engineering, McMaster University, Hamilton, Ontarion, Canada
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Wyatt AR, Wilson MR. Acute phase proteins are major clients for the chaperone action of α₂-macroglobulin in human plasma. Cell Stress Chaperones 2013; 18:161-70. [PMID: 22896034 PMCID: PMC3581619 DOI: 10.1007/s12192-012-0365-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Revised: 07/25/2012] [Accepted: 07/26/2012] [Indexed: 11/30/2022] Open
Abstract
Extracellular protein misfolding is implicated in many age-related diseases including Alzheimer's disease, macular degeneration and arthritis. In this study, putative endogenous clients for the chaperone activity of α₂-macroglobulin (α₂M) were identified after human plasma was subjected to physiologically relevant sheer stress at 37 °C for 10 days. Western blot analysis showed that four major acute phase proteins: ceruloplasmin, fibrinogen, α₁-acid glycoprotein and complement component 3, preferentially co-purified with α₂M after plasma was stressed. Furthermore, the formation of complexes between α₂M and these putative chaperone clients, detected by sandwich ELISA, was shown to be enhanced in response to stress. These results support the hypothesis that α₂M plays an important role in extracellular proteostasis by sequestering misfolded proteins and targeting them for disposal, particularly during acute phase reactions.
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Affiliation(s)
- Amy R. Wyatt
- />Department of Chemistry, University of Cambridge, Cambridge, UK
- />Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW Australia
| | - Mark R. Wilson
- />Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW Australia
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Yuan B, Chen Q, Ding WQ, Liu PS, Wu SS, Lin SC, Shen J, Gai Y. Copolymer coatings consisting of 2-methacryloyloxyethyl phosphorylcholine and 3-methacryloxypropyl trimethoxysilane via ATRP to improve cellulose biocompatibility. ACS APPLIED MATERIALS & INTERFACES 2012; 4:4031-4039. [PMID: 22856677 DOI: 10.1021/am3008399] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
AB diblock copolymers comprised of poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) and poly(3-methacryloxypropyl trimethoxysilane) (PMTSi) segments, which are used for biocompatible coatings, were investigated. Block copolymers with various compositions were synthesized by atomic transfer radical polymerization (ATRP). The obtained copolymers were dissolved in an ethanol solution, and dynamic light scattering showed that all block copolymers were capable of existing as micelles. After a convenient "one-step" reaction, the cellulose membranes could be covalently modified by these copolymers with stable chemical bonds (C-O-Si and Si-O-Si). Block copolymers with different PMPC chain length were applied to surface modification to find the most suitable copolymer. The functional MPC density can be controlled by adjusting the ratio of the two monomers (MPC and MTSi), which also affect surface properties, including the surface contact angle, surface morphology, and number of functional PC groups. The low-fouling properties were measured by protein adsorption, platelet adhesion and activation, and cell adhesion. Protein adsorption of bovine serum albumin (BSA), fibrinogen, and human plasma were also tested and a moderate monomer composite was attained. The protein adsorption behavior on the novel interfaces depends both on MPC density and PMPC chain length. Platelet adhesion and activation were reduced on all the modified surfaces. The adhesion of Human Embryonic Kidney 293 (293T) cells on the coated surfaces also decreased.
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Affiliation(s)
- Bo Yuan
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People's Republic of China
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Hassan N, Maldonado-Valderrama J, Gunning AP, Morris VJ, Ruso JM. Investigating the effect of an arterial hypertension drug on the structural properties of plasma protein. Colloids Surf B Biointerfaces 2011; 87:489-97. [PMID: 21726985 DOI: 10.1016/j.colsurfb.2011.06.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 05/02/2011] [Accepted: 06/09/2011] [Indexed: 11/26/2022]
Abstract
Propanolol is a betablocker drug used in the treatment of arterial hypertension related diseases. In order to achieve an optimal performance of this drug it is important to consider the possible interactions of propanolol with plasma proteins. In this work, we have used several experimental techniques to characterise the effect of addition of the betablocker propanolol on the properties of bovine plasma fibrinogen (FB). Differential scanning calorimeter (DSC), circular dichroism (CD), dynamic light scattering (DLS), surface tension techniques and atomic force microscopy (AFM) measurements have been combined to carry out a detailed physicochemical and surface characterization of the mixed system. As a result, DSC measurements show that propranolol can play two opposite roles, either acting as a structure stabilizer at low molar concentrations or as a structure destabilizer at higher concentrations, in different domains of fibrinogen. CD measurements have revealed that the effect of propanolol on the secondary structure of fibrinogen depends on the temperature and the drug concentration and the DLS analysis showed evidence for protein aggregation. Interestingly, surface tension measurements provided further evidence of the conformational change induced by propanolol on the secondary structure of FB by importantly increasing the surface tension of the system. Finally, AFM imaging of the fibrinogen system provided direct visualization of the protein structure in the presence of propanolol. Combination of these techniques has produced complementary information on the behavior of the mixed system, providing new insights into the structural properties of proteins with potential medical interest.
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Affiliation(s)
- Natalia Hassan
- Department of Applied Physics University of Santiago de Compostela, Santiago de Compostela, Spain
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Hassan N, Barbosa LRS, Itri R, Ruso JM. Fibrinogen stability under surfactant interaction. J Colloid Interface Sci 2011; 362:118-26. [PMID: 21722913 DOI: 10.1016/j.jcis.2011.06.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 06/02/2011] [Accepted: 06/02/2011] [Indexed: 10/18/2022]
Abstract
Differential scanning calorimetry (DSC), circular dichroism (CD), difference spectroscopy (UV-vis), Raman spectroscopy, and small-angle X-ray scattering (SAXS) measurements have been performed in the present work to provide a quantitatively comprehensive physicochemical description of the complexation between bovine fibrinogen and the sodium perfluorooctanoate, sodium octanoate, and sodium dodecanoate in glycine buffer (pH 8.5). It has been found that sodium octanoate and dodecanoate act as fibrinogen destabilizer. Meanwhile, sodium perfluorooctanoate acts as a structure stabilizer at low molar concentration and as a destabilizer at high molar concentration. Fibrinogen's secondary structure is affected by all three studied surfactants (decrease in α-helix and an increase in β-sheet content) to a different extent. DSC and UV-vis revealed the existence of intermediate states in the thermal unfolding process of fibrinogen. In addition, SAXS data analysis showed that pure fibrinogen adopts a paired-dimer structure in solution. Such a structure is unaltered by sodium octanoate and perfluoroctanoate. However, interaction of sodium dodecanoate with the fibrinogen affects the protein conformation leading to a complex formation. Taken together, all results evidence that both surfactant hydrophobicity and tail length mediate the fibrinogen stability upon interaction.
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Affiliation(s)
- Natalia Hassan
- Soft Matter and Molecular Biophysics Group, Department of Applied Physics, University of Santiago de Compostela, Campus Vida s/n, 15782 Santiago de Compostela, Spain
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Hassan N, Ruso JM, Somasundaran P. Mechanisms of fibrinogen–acebutolol interactions: Insights from DSC, CD and LS. Colloids Surf B Biointerfaces 2011; 82:581-7. [DOI: 10.1016/j.colsurfb.2010.10.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Revised: 09/06/2010] [Accepted: 10/11/2010] [Indexed: 11/25/2022]
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Sankaranarayanan K, Dhathathreyan A, Miller R. Assembling Fibrinogen at Air/Water and Solid/Liquid Interfaces Using Langmuir and Langmuir−Blodgett Films. J Phys Chem B 2010; 114:8067-75. [DOI: 10.1021/jp100896b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | | | - Reinhard Miller
- Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14424 Potsdam, FRG
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Nonckreman CJ, Fleith S, Rouxhet PG, Dupont-Gillain CC. Competitive adsorption of fibrinogen and albumin and blood platelet adhesion on surfaces modified with nanoparticles and/or PEO. Colloids Surf B Biointerfaces 2010; 77:139-49. [DOI: 10.1016/j.colsurfb.2010.01.014] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Revised: 01/07/2010] [Accepted: 01/21/2010] [Indexed: 10/19/2022]
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Wyatt AR, Wilson MR. Identification of human plasma proteins as major clients for the extracellular chaperone clusterin. J Biol Chem 2010; 285:3532-3539. [PMID: 19996109 PMCID: PMC2823492 DOI: 10.1074/jbc.m109.079566] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 12/02/2009] [Indexed: 11/06/2022] Open
Abstract
Clusterin (CLU) is an extracellular chaperone that is likely to play an important role in protein folding quality control. This study identified three deposition disease-associated proteins as major plasma clients for clusterin by studying CLU-client complexes formed in response to physiologically relevant stress (shear stress, approximately 36 dynes/cm(2) at 37 degrees C). Analysis of plasma samples by size exclusion chromatography indicated that (i) relative to control plasma, stressed plasma contained proportionally more soluble protein species of high molecular weight, and (ii) high molecular weight species were far more abundant when proteins purified by anti-CLU immunoaffinity chromatography from stressed plasma were compared with those purified from control plasma. SDS-PAGE and Western blot analyses indicated that a variety of proteins co-purified with CLU from both stressed and control plasma; however, several proteins were uniquely present or much more abundant when plasma was stressed. These proteins were identified by mass spectrometry as ceruloplasmin, fibrinogen, and albumin. Immunodot blot analysis of size exclusion chromatography fractionated plasma suggested that CLU-client complexes generated in situ are very large and may reach >or=4 x 10(7) Da. Lastly, sandwich enzyme-linked immunosorbent assay detected complexes containing CLU and ceruloplasmin, fibrinogen, or albumin in stressed but not control plasma. We have previously proposed that CLU-client complexes serve as vehicles to dispose of damaged misfolded extracellular proteins in vivo via receptor-mediated endocytosis. A better understanding of these mechanisms is likely to ultimately lead to the identification of new therapies for extracellular protein deposition disorders.
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Affiliation(s)
- Amy R Wyatt
- From the School of Biological Sciences, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Mark R Wilson
- From the School of Biological Sciences, University of Wollongong, Wollongong, New South Wales 2522, Australia.
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Liu PS, Chen Q, Liu X, Yuan B, Wu SS, Shen J, Lin SC. Grafting of Zwitterion from Cellulose Membranes via ATRP for Improving Blood Compatibility. Biomacromolecules 2009; 10:2809-16. [DOI: 10.1021/bm9006503] [Citation(s) in RCA: 149] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ping-Sheng Liu
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China, Jiangsu Engineering Research Center for Biomedical Function Materials, Nanjing Normal University, Nanjing 210097, People’s Republic of China, and High Technology Research Institute of Nanjing University, Changzhou 213164, People’s Republic of China
| | - Qiang Chen
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China, Jiangsu Engineering Research Center for Biomedical Function Materials, Nanjing Normal University, Nanjing 210097, People’s Republic of China, and High Technology Research Institute of Nanjing University, Changzhou 213164, People’s Republic of China
| | - Xiang Liu
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China, Jiangsu Engineering Research Center for Biomedical Function Materials, Nanjing Normal University, Nanjing 210097, People’s Republic of China, and High Technology Research Institute of Nanjing University, Changzhou 213164, People’s Republic of China
| | - Bo Yuan
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China, Jiangsu Engineering Research Center for Biomedical Function Materials, Nanjing Normal University, Nanjing 210097, People’s Republic of China, and High Technology Research Institute of Nanjing University, Changzhou 213164, People’s Republic of China
| | - Shi-Shan Wu
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China, Jiangsu Engineering Research Center for Biomedical Function Materials, Nanjing Normal University, Nanjing 210097, People’s Republic of China, and High Technology Research Institute of Nanjing University, Changzhou 213164, People’s Republic of China
| | - Jian Shen
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China, Jiangsu Engineering Research Center for Biomedical Function Materials, Nanjing Normal University, Nanjing 210097, People’s Republic of China, and High Technology Research Institute of Nanjing University, Changzhou 213164, People’s Republic of China
| | - Si-Cong Lin
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China, Jiangsu Engineering Research Center for Biomedical Function Materials, Nanjing Normal University, Nanjing 210097, People’s Republic of China, and High Technology Research Institute of Nanjing University, Changzhou 213164, People’s Republic of China
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Jin G, Yao Q, Zhang S, Zhang L. Surface modifying of microporous PTFE capillary for bilirubin removing from human plasma and its blood compatibility. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2008. [DOI: 10.1016/j.msec.2008.04.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Soman P, Rice Z, Siedlecki CA. Measuring the time-dependent functional activity of adsorbed fibrinogen by atomic force microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:8801-8806. [PMID: 18616311 DOI: 10.1021/la801227e] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In this work, we measured time-dependent functional changes in adsorbed fibrinogen by measuring antigen-antibody debonding forces with atomic force microscopy (AFM). AFM probes were functionalized with monoclonal antibodies recognizing fibrinogen gamma 392-411, which includes the platelet binding dodecapeptide region. These probes were used to collect force measurements between the antibody and fibrinogen on mica substrates and the probability of antigen recognition was calculated. Statistical analysis showed that the probability of antibody-antigen recognition peaked at approximately 45 min postadsorption and decreased with increasing residence time. Macroscale platelet adhesion measurements on these mica substrates were determined to be greatest at fibrinogen residence times of approximately 45 min, which correlated well with the functional activity of adsorbed fibrinogen as measured by the modified AFM probes. These results demonstrate the utility of this approach for measuring protein function at or near the molecular scale and offers new opportunities for improved insights into the molecular basis for the biological response to biomaterials.
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Affiliation(s)
- Pranav Soman
- Department of Bioengineering and Surgery, The Pennsylvania State University College of Medicine, Hershey Pennsylvania 17033, USA
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Martini S, Consumi M, Bonechi C, Rossi C, Magnani A. Fibrinogen−Catecholamine Interaction as Observed by NMR and Fourier Transform Infrared Spectroscopy. Biomacromolecules 2007; 8:2689-96. [PMID: 17705531 DOI: 10.1021/bm070273n] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this work, the interactions between the main catecholamines-epinephrine and norepinephrine-and fibrinogen were investigated by NMR and Fourier transform infrared spectroscopies. The two hormones were found to interact with fibrinogen and to affect the protein secondary structure to a different extent. In particular, the protein selectively binds epinephrine at both the basal and stress concentrations, while it shows a weak nonspecific interaction with norepinephrine. The interaction with the stress level of epinephrine leads to drastic protein conformational changes, whereas norepinephrine does not affect fibrinogen secondary structure, even at stress concentration.
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Affiliation(s)
- Silvia Martini
- Department of Chemical & Biosystem Sciences, University of Siena, Via Aldo Moro, 2-53100 Siena, Italy
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Rodrigues SN, Gonçalves IC, Martins MCL, Barbosa MA, Ratner BD. Fibrinogen adsorption, platelet adhesion and activation on mixed hydroxyl-/methyl-terminated self-assembled monolayers. Biomaterials 2006; 27:5357-67. [PMID: 16842847 DOI: 10.1016/j.biomaterials.2006.06.010] [Citation(s) in RCA: 156] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2006] [Accepted: 06/15/2006] [Indexed: 10/24/2022]
Abstract
The effect of surface wettability on fibrinogen adsorption, platelet adhesion and platelet activation was investigated using self-assembled monolayers (SAMs) containing different ratios of longer chain methyl- and shorter chain hydroxyl-terminated alkanethiols (C15CH3 vs. C11OH) on gold. Protein adsorption studies were performed using radiolabeled human fibrinogen (HFG). Platelet adhesion and activation studies with and without pre-adsorbed fibrinogen, albumin and plasma were assessed using scanning electron microscopy (SEM) and a glutaraldehyde-induced fluorescence technique (GIFT). Results demonstrated a linear decrease of HFG adsorption with the increase of OH groups on the monolayer (increase of the hydrophilicity). Platelet adhesion and activation also decrease with increase of hydrophilicity of surface. Concerning SAMs pre-immersed in proteins, fibrinogen adsorption was related with high platelet adhesion and activation. The passivant effect of albumin on platelet adhesion and activation was only demonstrated on SAMs contained C11OH. When all the blood proteins are present (plasma) platelet adhesion was almost absent on SAMs with 65% and 100% C11OH. This could be explained by the higher albumin affinity of the SAMs with 65% C11OH and the lower total protein adsorption associated with SAMs with 100% C11OH.
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Affiliation(s)
- Sofia N Rodrigues
- INEB - Instituto de Engenharia Biomédica, Laboratório de Biomateriais, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal
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Roach P, Shirtcliffe NJ, Farrar D, Perry CC. Quantification of Surface-Bound Proteins by Fluorometric Assay: Comparison with Quartz Crystal Microbalance and Amido Black Assay. J Phys Chem B 2006; 110:20572-9. [PMID: 17034246 DOI: 10.1021/jp0621575] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Protein adsorption is of major and widespread interest, being useful in the fundamental understanding of biological processes at interfaces through to the development of new materials. A number of techniques are commonly used to study protein adhesion, but few are directly quantitative. Here we describe the use of Nano Orange, a fluorometric assay, to quantitatively assess the adsorption of bovine fibrinogen and albumin onto model hydrophilic (OH terminated) and hydrophobic (CH3 terminated) surfaces. Results obtained using this method allowed the calibration of previously unquantifiable data obtained on the same surfaces using quartz crystal microbalance measurements and an amido black protein assay. Both proteins were found to adsorb with higher affinity but with lower saturation levels onto hydrophobic surfaces. All three analytical techniques showed similar trends in binding strength and relative amounts adsorbed over a range of protein concentrations, although the fluorometric analysis was the only method to give absolute quantities of surface-bound protein. The versatility of the fluorometric assay was also probed by analyzing protein adsorption onto porous superhydrophobic and superhydrophilic surfaces. Results obtained using the assay in conjunction with these surfaces were surface chemistry dependent. Imbibition of water into the superhydrophilic coatings provided greater surface area for protein adsorption, although the protein surface density was less than that found on a comparable flat hydrophilic surface. Superhydrophobic surfaces prevented protein solution penetration. This paper demonstrates the potential of a fluorometric assay to be used as an external calibration for other techniques following protein adsorption processes or as a supplemental method to study protein adsorption. Differences in protein adsorption onto hydrophilic vs superhydrophilic and hydrophobic vs superhydrophobic surfaces are highlighted.
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Affiliation(s)
- Paul Roach
- Interdisciplinary Biomedical Research Centre, School of Biomedical and Natural Sciences, Nottingham Trent University, Clifton, Nottingham NG11 8NS, UK
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